| /* |
| # |
| # File : CImg_demo.cpp |
| # ( C++ source file ) |
| # |
| # Description : A multi-part demo demonstrating some of the CImg capabilities. |
| # This file is a part of the CImg Library project. |
| # ( http://cimg.eu ) |
| # |
| # Copyright : David Tschumperle |
| # ( http://tschumperle.users.greyc.fr/ ) |
| # |
| # License : CeCILL v2.0 |
| # ( http://www.cecill.info/licences/Licence_CeCILL_V2-en.html ) |
| # |
| # This software is governed by the CeCILL license under French law and |
| # abiding by the rules of distribution of free software. You can use, |
| # modify and/ or redistribute the software under the terms of the CeCILL |
| # license as circulated by CEA, CNRS and INRIA at the following URL |
| # "http://www.cecill.info". |
| # |
| # As a counterpart to the access to the source code and rights to copy, |
| # modify and redistribute granted by the license, users are provided only |
| # with a limited warranty and the software's author, the holder of the |
| # economic rights, and the successive licensors have only limited |
| # liability. |
| # |
| # In this respect, the user's attention is drawn to the risks associated |
| # with loading, using, modifying and/or developing or reproducing the |
| # software by the user in light of its specific status of free software, |
| # that may mean that it is complicated to manipulate, and that also |
| # therefore means that it is reserved for developers and experienced |
| # professionals having in-depth computer knowledge. Users are therefore |
| # encouraged to load and test the software's suitability as regards their |
| # requirements in conditions enabling the security of their systems and/or |
| # data to be ensured and, more generally, to use and operate it in the |
| # same conditions as regards security. |
| # |
| # The fact that you are presently reading this means that you have had |
| # knowledge of the CeCILL license and that you accept its terms. |
| # |
| */ |
| |
| // Include static image data, so that the exe does not depend on external image files. |
| #include "img/CImg_demo.h" |
| |
| // Include CImg library header. |
| #include "CImg.h" |
| using namespace cimg_library; |
| #undef min |
| #undef max |
| |
| // Item : Blurring Gradient |
| //---------------------------- |
| void* item_blurring_gradient() { |
| const CImg<float> src(data_milla,211,242,1,3); |
| CImgList<float> grad = src.get_gradient(); |
| CImgList<unsigned char> visu = (src,sqrt(grad[0].pow(2) + grad[1].pow(2)).normalize(0,255),src); |
| CImgDisplay disp(visu,"[#1] - Color Image, Gradient Norm and Blurring Gradient",0); |
| |
| for (double sigma = 0; !disp.is_closed() && !disp.is_keyQ() && !disp.is_keyESC(); sigma+=0.05) { |
| visu[2] = visu[1].get_blur((float)cimg::abs(30*std::cos(sigma))).normalize(0,255); |
| disp.resize(false).display(visu).wait(20); |
| } |
| return 0; |
| } |
| |
| // Item : Rotozoom |
| //----------------- |
| void* item_rotozoom() { |
| CImg<unsigned char> src = CImg<unsigned char>(data_milla,211,242,1,3,false).resize(400,300,1,3,3), |
| img(src), img2(img); |
| CImgDisplay disp(img.width(),img.height(),"[#2] - Rotozoom",0); |
| float alpha = 0, t = 0, angle = 0, zoom0 = -0.9f, w2 = 0.5f*img.width(), h2 = 0.5f*img.height(); |
| const unsigned char color[] = { 16,32,64 }; |
| |
| while (!disp.is_closed() && !disp.is_keyQ() && !disp.is_keyESC()) { |
| cimg_forYC(src,y,k) { |
| const int xc = 4*src.width() + (int)(60*std::sin((float)y*3/src.height() + 10*t)); |
| cimg_forX(src,x) { |
| const float val = (float)(src((xc + x)%src.width(),y,0,k)* |
| (1.3f + 0.20*std::sin(alpha + k*k*((float)src.width()/2 - x)* |
| ((float)src.height()/2 - y)*std::cos(t)/300.0))); |
| img(x,y,0,k) = (unsigned char)(val>255.0f?255:val); |
| } |
| } |
| const float |
| zoom = 1.0f + (float)(zoom0 + 0.3f*(1 + std::cos(3*t))), |
| rad = (float)(angle*cimg::PI/180), ca = (float)std::cos(rad)/zoom, sa = (float)std::sin(rad)/zoom; |
| cimg_forXY(img,x,y) { |
| const float |
| cX = x - w2, cY = y - h2, |
| fX = w2 + cX*ca - cY*sa, |
| fY = h2 + cX*sa + cY*ca; |
| const int |
| X = cimg::mod((int)fX,img.width()), |
| Y = cimg::mod((int)fY,img.height()); |
| cimg_forC(img,c) img2(x,y,c) = img(X,Y,c); |
| } |
| img2.swap(img).draw_text(3,3,"Mouse buttons\nto zoom in/out",color,0,0.8f,24).display(disp.resize(false).wait(20)); |
| alpha+=0.7f; t+=0.01f; angle+=0.8f; |
| zoom0+=disp.button()&1?0.1f:disp.button()&2?-0.1f:0; |
| if (disp.is_keyCTRLLEFT() && disp.is_keyF()) disp.resize(400,400,false).toggle_fullscreen(false); |
| } |
| return 0; |
| } |
| |
| // Item : Anisotropic Smoothing (Total variation PDE, explicit scheme) |
| //-------------------------------------------------------------------- |
| void* item_anisotropic_smoothing() { |
| const CImg<float> src = CImg<>(data_milla,211,242,1,3).noise(-30,1); |
| CImgList<float> images(src,src); |
| CImgDisplay disp(images,"[#3] - Anisotropic smoothing"); |
| const float white[] = { 255, 255, 255 }, black[] = { 0, 0, 0 }; |
| |
| for (unsigned int iter = 0; !disp.is_closed() && !disp.is_keyQ() && !disp.is_keyESC(); ++iter) { |
| |
| // Compute PDE velocity field. |
| CImg_3x3(I,float); |
| CImg<float> veloc(src); |
| float *ptrd = veloc.data(), betamax = 0; |
| cimg_forC(src,k) cimg_for3x3(images[1],x,y,0,k,I,float) { |
| const float |
| ix = (Inc - Ipc)/2, |
| iy = (Icn - Icp)/2, |
| ng = (float)std::sqrt(1e-10f + ix*ix + iy*iy), |
| ixx = Inc + Ipc - 2*Icc, |
| iyy = Icn + Icp - 2*Icc, |
| ixy = 0.25f*(Inn + Ipp - Ipn - Inp), |
| iee = (ix*ix*iyy + iy*iy*ixx - 2*ix*iy*ixy)/(ng*ng), |
| beta = iee/(0.1f + ng); |
| if (beta>betamax) betamax = beta; else if (-beta>betamax) betamax = -beta; |
| *(ptrd++) = beta; |
| } |
| veloc*=40.0f/betamax; |
| images[1]+=veloc; |
| images[0].draw_text(4,4,"Iteration : %u ",white,black,1,13,iter); |
| disp.resize(false).display(images); |
| } |
| return 0; |
| } |
| |
| // Item : Fractal Animation |
| //-------------------------- |
| void* item_fractal_animation() { |
| CImg<unsigned char> img(400,400,1,3,0), img2(img), noise(3,2,1,3); |
| const float w2 = 0.5f*img.width(), h2 = 0.5f*img.height(); |
| CImgDisplay disp(img,"[#4] - Fractal Animation"); |
| float zoom = 0; |
| for (unsigned int iter = 0; !disp.is_closed() && !disp.is_keyQ() && !disp.is_keyESC(); ++iter, zoom+=0.2f) { |
| img.draw_image((img.width() - noise.width())/2, |
| (img.height() - noise.height())/2, |
| noise.fill(0).noise(255,1)); |
| const float |
| nzoom = (float)(1.04f + 0.02f*std::sin(zoom/10)), |
| rad = (float)(10*std::sin(iter/25.0)*cimg::PI/180), |
| ca = (float)std::cos(rad)/nzoom, sa = (float)std::sin(rad)/nzoom; |
| cimg_forXY(img,x,y) { |
| const float |
| cX = x - w2, cY = y - h2, |
| X = w2 + cX*ca - cY*sa, |
| Y = h2 + cX*sa + cY*ca; |
| cimg_forC(img,c) img2(x,y,c) = img.atXY((int)X,(int)Y,0,c,0); |
| } |
| img2.swap(img).resize(disp.resize(false)).display(disp.wait(25)); |
| if (disp.is_keyCTRLLEFT() && disp.is_keyF()) disp.resize(400,400,false).toggle_fullscreen(false); |
| } |
| return 0; |
| } |
| |
| // Item : Gamma Correction and Histogram Visualization |
| //----------------------------------------------------- |
| void* item_gamma_correction() { |
| CImg<float> img = CImg<>(data_milla,211,242,1,3).normalize(0,1); |
| CImgList<unsigned char> visu(img*255.0,CImg<unsigned char>(512,300,1,3,0)); |
| CImgDisplay disp(visu,"[#5] - Gamma Corrected Image and Histogram (Click to set Gamma)"); |
| const unsigned char |
| yellow[] = { 255, 255, 0 }, blue[] = { 0, 155, 255 }, blue2[] = { 0, 0, 255 }, |
| blue3[] = { 0, 0, 155 }, white[] = { 255, 255, 255 }, green[] = { 50, 128, 50 }; |
| |
| for (double gamma = 1; !disp.is_closed() && !disp.is_keyQ() && !disp.is_keyESC(); ) { |
| cimg_forXYZC(visu[0],x,y,z,k) visu[0](x,y,z,k) = (unsigned char)(std::pow((double)img(x,y,z,k),1.0/gamma)*256); |
| const CImg<float> hist = visu[0].get_histogram(50,0,255); |
| visu[1].fill(0).draw_text(50,5,"Gamma = %.3g",white,0,1,24,gamma). |
| draw_graph(hist,green,1,3,0,20000,0).draw_graph(hist,yellow,1,2,0,20000,0). |
| draw_axes(0,256,20000,0,white,0.7f); |
| const int xb = (int)(50 + gamma*150); |
| visu[1].draw_grid(20,20,0,0,false,false,white,0.3f,0xCCCCCCCC,0xCCCCCCCC). |
| draw_rectangle(51,31,xb - 1,39,blue2).draw_rectangle(50,30,xb,30,blue).draw_rectangle(xb,30,xb,40,blue). |
| draw_rectangle(xb,40,50,39,blue3).draw_rectangle(50,30,51,40,blue3); |
| if (disp.button() && disp.mouse_x()>=img.width() + 50 && disp.mouse_x()<=img.width() + 450) |
| gamma = (disp.mouse_x() - img.width() - 50)/150.0; |
| disp.resize(disp,false).display(visu).wait(); |
| } |
| return 0; |
| } |
| |
| // Item : Filled Triangles |
| //------------------------- |
| void* item_filled_triangles() { |
| |
| // Create a colored 640x480 background image which consists of different color shades. |
| CImg<float> background(640,480,1,3); |
| cimg_forXY(background,x,y) background.fillC(x,y,0, |
| x*std::cos(6.0*y/background.height()) + |
| y*std::sin(9.0*x/background.width()), |
| x*std::sin(8.0*y/background.height()) - |
| y*std::cos(11.0*x/background.width()), |
| x*std::cos(13.0*y/background.height()) - |
| y*std::sin(8.0*x/background.width())); |
| background.normalize(0,180); |
| |
| // Init images and create display window. |
| CImg<unsigned char> img0(background), img; |
| unsigned char white[] = { 255, 255, 255 }, color[100][3]; |
| CImgDisplay disp(img0,"[#6] - Filled Triangles (Click to shrink)"); |
| |
| // Define random properties (pos, size, colors, ..) for all triangles that will be displayed. |
| float posx[100], posy[100], rayon[100], angle[100], veloc[100], opacity[100]; |
| int num = 1; |
| std::srand((unsigned int)time(0)); |
| for (int k = 0; k<100; ++k) { |
| posx[k] = (float)(cimg::rand()*img0.width()); |
| posy[k] = (float)(cimg::rand()*img0.height()); |
| rayon[k] = (float)(10 + cimg::rand()*50); |
| angle[k] = (float)(cimg::rand()*360); |
| veloc[k] = (float)(cimg::rand()*20 - 10); |
| color[k][0] = (unsigned char)(cimg::rand()*255); |
| color[k][1] = (unsigned char)(cimg::rand()*255); |
| color[k][2] = (unsigned char)(cimg::rand()*255); |
| opacity[k] = (float)(0.3 + 1.5*cimg::rand()); |
| } |
| |
| // Start animation loop. |
| while (!disp.is_closed() && !disp.is_keyQ() && !disp.is_keyESC()) { |
| img = img0; |
| |
| // Draw each triangle on the background image. |
| for (int k = 0; k<num; ++k) { |
| const int |
| x0 = (int)(posx[k] + rayon[k]*std::cos(angle[k]*cimg::PI/180)), |
| y0 = (int)(posy[k] + rayon[k]*std::sin(angle[k]*cimg::PI/180)), |
| x1 = (int)(posx[k] + rayon[k]*std::cos((angle[k] + 120)*cimg::PI/180)), |
| y1 = (int)(posy[k] + rayon[k]*std::sin((angle[k] + 120)*cimg::PI/180)), |
| x2 = (int)(posx[k] + rayon[k]*std::cos((angle[k] + 240)*cimg::PI/180)), |
| y2 = (int)(posy[k] + rayon[k]*std::sin((angle[k] + 240)*cimg::PI/180)); |
| if (k%10) img.draw_triangle(x0,y0,x1,y1,x2,y2,color[k],opacity[k]); |
| else img.draw_triangle(x0,y0,x1,y1,x2,y2,img0,0,0,img0.width() - 1,0,0,img.height() - 1,opacity[k]); |
| img.draw_triangle(x0,y0,x1,y1,x2,y2,white,opacity[k],~0U); |
| |
| // Make the triangles rotate, and check for mouse click event. |
| // (to make triangles collapse or join). |
| angle[k]+=veloc[k]; |
| if (disp.mouse_x()>0 && disp.mouse_y()>0) { |
| float u = disp.mouse_x() - posx[k], v = disp.mouse_y() - posy[k]; |
| if (disp.button()) { u = -u; v = -v; } |
| posx[k]-=0.03f*u, posy[k]-=0.03f*v; |
| if (posx[k]<0 || posx[k]>=img.width()) posx[k] = (float)(cimg::rand()*img.width()); |
| if (posy[k]<0 || posy[k]>=img.height()) posy[k] = (float)(cimg::rand()*img.height()); |
| } |
| } |
| |
| // Display current animation framerate, and refresh display window. |
| img.draw_text(5,5,"%u frames/s",white,0,0.5f,13,(unsigned int)disp.frames_per_second()); |
| img0.resize(disp.display(img).resize(false).wait(20)); |
| if (++num>100) num = 100; |
| |
| // Allow the user to toggle fullscreen mode, by pressing CTRL+F. |
| if (disp.is_keyCTRLLEFT() && disp.is_keyF()) disp.resize(640,480,false).toggle_fullscreen(false); |
| } |
| return 0; |
| } |
| |
| // Item : Mandelbrot/Julia Explorer |
| //---------------------------------- |
| void* item_mandelbrot_explorer() { |
| |
| // Define image canvas and corresponding display window. |
| CImg<unsigned char> img(800,600,1,3,0); |
| CImgDisplay disp(img); |
| |
| // Start main explorer loop. |
| double julia_r = 0, julia_i = 0; |
| for (bool endflag = false, fractal_type = false, smooth = false, show_help = true; !endflag;) { |
| bool stopflag = false; |
| double xmin, xmax, ymin, ymax; |
| |
| // Init default upper-left/lower-right coordinates of the fractal set. |
| if (fractal_type) { xmin = -1.5; xmax = 1.5; ymin = -1.5; ymax = 1.5; julia_r = 0.317; julia_i = 0.029; } |
| else { xmin = -2.25; xmax = 1.0; ymin = -1.5; ymax = 1.5; julia_r = julia_i = 0; } |
| |
| // Create random palette for displaying the fractal set. |
| const CImg<unsigned char> palette = |
| CImg<unsigned char>(256,1,1,3,16 + 120).noise(119,1).resize(1024,1,1,3,3).fillC(0,0,0,0,0,0); |
| |
| // Enter event loop for the current fractal set. |
| for (unsigned int maxiter = 64; !stopflag; ) { |
| |
| // Draw Mandelbrot or Julia fractal set on the image. |
| img.resize(disp.resize().set_title("[#7] - %s Set : (%g,%g)-(%g,%g), %s = (%g,%g) (%u iter.)", |
| fractal_type?"Julia":"Mandelbrot",xmin,ymin,xmax,ymax, |
| fractal_type?"c":"z0",julia_r,julia_i,maxiter)). |
| fill(0).draw_mandelbrot(palette,1,xmin,ymin,xmax,ymax,maxiter,smooth,fractal_type,julia_r,julia_i); |
| |
| // Display help if necessary. |
| if (show_help) { |
| const unsigned char white[] = { 255, 255, 255 }; |
| static CImg<unsigned char> |
| help = CImg<unsigned char>().draw_text(0,0,"\n" |
| " Use mouse to zoom on desired region. \n" |
| " H Show/Hide help \n" |
| " PAD 1...9 Fractal navigation \n" |
| " PAD +/- Zoom/Unzoom \n" |
| " SPACE Set/Disable color smoothing \n" |
| " ENTER Switch Mandelbrot/Julia sets \n" |
| " Arrows Change set parameterization \n" |
| " Page UP/DOWN Add/Reduce iteration numbers \n\n", |
| white).resize(-100,-100,1,3); |
| help.draw_rectangle(2,2,help.width() - 3,help.height() - 3,white,1,~0U); |
| img.draw_image(img.width() - help.width(),help,0.7f); |
| } |
| |
| // Get rectangular shape from the user to define the zoomed region. |
| const CImg<int> selection = img.get_select(disp,2,0); |
| const int xs0 = selection[0], ys0 = selection[1], xs1 = selection[3], ys1 = selection[4]; |
| |
| // If the user has selected a region with the mouse, then zoom-in ! |
| if (xs0>=0 && ys0>=0 && xs1>=0 && ys1>=0) { |
| const double dx =(xmax - xmin)/img.width(), dy =(ymax - ymin)/img.height(); |
| const int dsmax = (ys1 - ys0)/2, xs = (xs0 + xs1)/2, ys = (ys0 + ys1)/2; |
| |
| // If the region is too small (point) then reset the fractal set position and zoom. |
| if (dsmax<5) stopflag = true; |
| xmin+=(xs - dsmax*dy/dx)*dx; |
| ymin+=(ys - dsmax)*dy; |
| xmax-=(img.width() - xs - dsmax*dy/dx)*dx; |
| ymax-=(img.height() - ys - dsmax)*dy; |
| } |
| |
| // Also, test if a key has been pressed. |
| // (moving in the fractal set can be done, using keyboard). |
| switch (disp.key()) { |
| |
| // Show/hide help. |
| case cimg::keyH: show_help = !show_help; break; |
| |
| // Switch between Julia/Mandelbrot sets. |
| case cimg::keyENTER: fractal_type = !fractal_type; stopflag = true; break; |
| |
| // Enable/disable smoothed colors. |
| case cimg::keySPACE: smooth = !smooth; break; |
| |
| // Change fractal set parameters. |
| case cimg::keyARROWLEFT: julia_r-=fractal_type?0.001f:0.05f; break; |
| case cimg::keyARROWRIGHT: julia_r+=fractal_type?0.001f:0.05f; break; |
| case cimg::keyARROWUP: julia_i+=fractal_type?0.001f:0.05f; break; |
| case cimg::keyARROWDOWN: julia_i-=fractal_type?0.001f:0.05f; break; |
| |
| // Add/remove iterations. |
| case cimg::keyPAGEDOWN: maxiter-=32; break; |
| case cimg::keyPAGEUP: maxiter+=16; break; |
| |
| // Move left, right, up and down in the fractal set. |
| case cimg::keyPAD4: { const double delta = (xmax - xmin)/10; xmin-=delta; xmax-=delta; } break; |
| case cimg::keyPAD6: { const double delta = (xmax - xmin)/10; xmin+=delta; xmax+=delta; } break; |
| case cimg::keyPAD8: { const double delta = (ymax - ymin)/10; ymin-=delta; ymax-=delta; } break; |
| case cimg::keyPAD2: { const double delta = (ymax - ymin)/10; ymin+=delta; ymax+=delta; } break; |
| |
| // Allow to zoom in/out in the fractal set. |
| case cimg::keyPADADD: { |
| const double |
| xc = 0.5*(xmin + xmax), |
| yc = 0.5*(ymin + ymax), |
| dx = (xmax - xmin)*0.85/2, |
| dy = (ymax - ymin)*0.85/2; |
| xmin = xc - dx; ymin = yc - dy; xmax = xc + dx; ymax = yc + dy; |
| } break; |
| case cimg::keyPADSUB: |
| const double |
| xc = 0.5*(xmin + xmax), |
| yc = 0.5*(ymin + ymax), |
| dx = (xmax - xmin)*1.15/2, |
| dy = (ymax - ymin)*1.15/2; |
| xmin = xc - dx; ymin = yc - dy; xmax = xc + dx; ymax = yc + dy; |
| break; |
| } |
| |
| // Do a simple test to check if more/less iterations are necessary for the next step. |
| const float value = (float)img.get_norm().get_histogram(256,0,255)(0)*3; |
| if (value>img.size()/6.0f) maxiter+=16; |
| if (maxiter>1024) maxiter = 1024; |
| if (value<img.size()/10.0f) maxiter-=4; |
| if (maxiter<32) maxiter = 32; |
| |
| // Check if the user want to quit the explorer. |
| if (disp.is_closed() || disp.is_keyQ() || disp.is_keyESC()) stopflag = endflag = true; |
| } |
| } |
| return 0; |
| } |
| |
| // Item : Mini-Paint |
| //------------------ |
| void* item_mini_paint() { |
| int xo = -1, yo = -1, x = -1, y = -1; |
| bool redraw = true; |
| CImg<unsigned char> img(256,256 + 64,1,3,0); |
| unsigned char color[] = { 255, 255, 255 }; |
| cimg_for_inY(img,256,img.height() - 1,yy) cimg_forX(img,xx) img.fillC(xx,yy,0,xx,(yy - 256)*4,(3*xx)%256); |
| CImgDisplay disp(img.draw_text(5,5," ",color,color),"[#8] - Mini-Paint"); |
| while (!disp.is_closed() && !disp.is_keyQ() && !disp.is_keyESC()) { |
| const unsigned int but = disp.button(); |
| redraw = false; |
| xo = x; yo = y; x = disp.mouse_x(); y = disp.mouse_y(); |
| if (xo>=0 && yo>=0 && x>=0 && y>=0) { |
| if (but&1 || but&4) { |
| if (y<253) { |
| const float tmax = (float)std::max(cimg::abs(xo - x),cimg::abs(yo - y)) + 0.1f; |
| const int radius = (but&1?3:0) + (but&4?6:0); |
| for (float t = 0; t<=tmax; ++t) |
| img.draw_circle((int)(x + t*(xo - x)/tmax),(int)(y + t*(yo - y)/tmax),radius,color); |
| } |
| if (y>=256) { |
| color[0] = img(x,y,0); color[1] = img(x,y,1); color[2] = img(x,y,2); |
| img.draw_text(5,5," ",color,color); |
| } |
| redraw = true; |
| } |
| if (y>=253) y = 252; |
| if (disp.button()&2) { img.draw_fill(x,y,color); redraw = true; } |
| } |
| if (redraw) disp.display(img); |
| disp.resize(disp).wait(); |
| if (disp.key()) cimg_forC(img,k) { img.get_shared_rows(0,255,0,k).fill(0); img.display(disp); } |
| } |
| return 0; |
| } |
| |
| // Item : Soccer Bobs |
| //------------------- |
| void* item_soccer_bobs() { |
| CImg<unsigned char> foot(data_foot,200,200,1,3,false), canvas0(640,480,1,3,0); |
| const unsigned char color[] = { 255, 255, 0 }; |
| float zoom = 0.2f; |
| cimg_forXY(canvas0,x,y) canvas0(x,y,1) = (unsigned char)(20 + (y*215/canvas0.height()) + 19*cimg::rand(-1,1)); |
| canvas0.draw_text(5,5,"Left/Right Mouse Button = Zoom In/Out\nMiddle Button = Reset Screen",color); |
| CImgList<unsigned char> canvas(16,canvas0); |
| CImg<float> mask(foot.width(),foot.height()); |
| cimg_forXY(mask,x,y) mask(x,y) = (foot(x,y,0)==255 && !foot(x,y,1) && !foot(x,y,2))?0:0.8f; |
| CImgDisplay disp(canvas0,"[#9] - Unlimited Soccer Bobs"); |
| for (unsigned int curr_canvas = 0; !disp.is_closed() && !disp.is_keyQ() && !disp.is_keyESC(); (++curr_canvas) %= 16) { |
| if (disp.mouse_x()>=0 && disp.mouse_y()>=0) |
| canvas[curr_canvas].draw_image((int)(disp.mouse_x() - zoom*foot.width()/2), |
| (int)(disp.mouse_y() - zoom*foot.height()/2), |
| foot.get_resize((int)(foot.width()*zoom),(int)(foot.height()*zoom)), |
| mask.get_resize((int)(foot.width()*zoom),(int)(foot.height()*zoom))); |
| zoom+=disp.button()&1?0.03f:disp.button()&2?-0.03f:0; |
| zoom = zoom<0.1f?0.1f:zoom>1?1.0f:zoom; |
| if (disp.button()&4) cimglist_for(canvas,l) canvas[l] = canvas0; |
| if (disp.is_keyCTRLLEFT() && disp.is_keyF()) disp.toggle_fullscreen(false); |
| disp.display(canvas[curr_canvas]).resize(disp,false).wait(20); |
| } |
| return 0; |
| } |
| |
| // Item : Bump Effect |
| //-------------------- |
| void* item_bump() { |
| CImg<float> logo = CImg<>(56,32,1,1,0).draw_text(12,3,"I Love\nCImg !",CImg<>::vector(255).data()). |
| resize(-800,-800,1,1,3).blur(6).normalize(0,255); |
| logo+=CImg<>(logo.width(),logo.height(),1,1,0).noise(80,1).deriche(2,0,'y',false).deriche(10,0,'x',false); |
| CImgList<float> grad = logo.get_gradient(); |
| cimglist_apply(grad,normalize)(-140,140); |
| logo.normalize(0,255); |
| CImg<float> light = CImg<>(300 + 2*logo.width(),300 + 2*logo.height()); |
| light.draw_gaussian(0.5f*light.width(),0.5f*light.height(),80,CImg<>::vector(255).data()); |
| CImg<unsigned char> img(logo.width(),logo.height(),1,3,0); |
| CImgDisplay disp(img,"[#10] - Bump Effect (Move lightsource with mouse)"); |
| for (float t = 0; !disp.is_closed() && !disp.is_keyQ() && !disp.is_keyESC(); t+=0.03f) { |
| const int |
| mouse_x = (disp.mouse_x()>=0 && disp.button())?disp.mouse_x()*img.width()/disp.width(): |
| (int)(img.width()/2 + img.width()*std::cos(1*t)/2), |
| mouse_y = (disp.mouse_y()>=0 && disp.button())?disp.mouse_y()*img.height()/disp.height(): |
| (int)(img.height()/2 + img.height()*std::sin(3*t)/2); |
| cimg_forXY(img,x,y) { |
| const int gx = (int)grad[0](x,y), gy = (int)grad[1](x,y); |
| const float val = 40 + (gx + gy)/2 + light(light.width()/2 + mouse_x - x + gx, |
| light.height()/2 + mouse_y - y + gy); |
| img(x,y,0) = img(x,y,1) = img(x,y,2) = (unsigned char)(val>255?255:val<0?0:val); |
| } |
| disp.resize(false).display(img.draw_image(0,0,0,1,logo,0.1f)).wait(25); |
| if (disp.is_keyCTRLLEFT() && disp.is_keyF()) disp.resize(640,480,false).toggle_fullscreen(false); |
| } |
| return 0; |
| } |
| |
| // Item : Bouncing Bubble |
| //------------------------ |
| void* item_bouncing_bubble() { |
| CImg<unsigned char> back(420,256,1,3,0), img; |
| cimg_forXY(back,x,y) back(x,y,2) = (unsigned char)((y<2*back.height()/3)?30:(255 - 2*(y + back.height()/2))); |
| CImgDisplay disp(back,"[#11] - Bouncing bubble"); |
| const unsigned char col1[] = { 40, 100, 10 }, col2[] = { 20, 70, 0 }, col3[] = { 40, 150, 10 }, |
| col4[] = { 200, 255, 100 }, white[] = { 255, 255, 255 }; |
| float u = (float)std::sqrt(2.0f), cx = back.width()/2.0f, t = 0, vt = 0.05f, vx = 2; |
| while (!disp.is_closed() && !disp.is_keyQ() && !disp.is_keyESC()) { |
| img = back; |
| int xm = (int)cx, ym = (int)(img.height()/2 - 70 + (img.height()/2 + 10)*(1 - cimg::abs(std::cos((t+=vt))))); |
| float r1 = 50, r2 = 50; |
| vt = 0.05f; |
| if (xm + r1>=img.width()) { const float delta = (xm + r1) - img.width(); r1-=delta; r2+=delta; } |
| if (xm - r1<0) { const float delta = -(xm - r1); r1-=delta; r2+=delta; } |
| if (ym + r2>=img.height() - 40) { |
| const float delta = (ym + r2) - img.height() + 40; |
| r2-=delta; |
| r1+=delta; |
| vt = 0.05f - 0.0015f*(50 - r2); |
| } |
| if (ym - r2<0) { const float delta = -(ym - r2); r2-=delta; r1+=delta; } |
| img.draw_ellipse(xm,ym,r1,r2,0,col1). |
| draw_ellipse((int)(xm + 0.03*r1*u),(int)(ym - 0.03*r2*u),0.85f*r1,0.85f*r2,0,col2). |
| draw_ellipse((int)(xm + 0.1*r1*u),(int)(ym - 0.1*r2*u),0.8f*r1,0.8f*r2,0,col1). |
| draw_ellipse((int)(xm + 0.2*r1*u),(int)(ym - 0.2*r2*u),r1/2,r2/2,0,col3). |
| draw_ellipse((int)(xm + 0.3*r1*u),(int)(ym - 0.3*r2*u),r1/4,r2/4,0,col4). |
| draw_image(0,img.height() - 40,img.get_crop(0,img.height() - 80,img.width() - 1,img.height() - 40). |
| mirror('y'),0.45f). |
| draw_text(xm - 70,(int)(ym - r2 - 30),"Bubble (%d,%d)",white,0,0.7f,24,xm,ym); |
| if ((cx+=20*vt*vx)>=img.width() - 30 || cx<30) vx = -vx; |
| disp.display(img).wait(20); |
| if (disp.is_resized()) { |
| back.resize(disp.resize(disp.window_width()>200?disp.window_width():200,disp.height(),false)); |
| cx = back.width()/2.0f; |
| } |
| } |
| return 0; |
| } |
| |
| // Item : Virtual Landscape |
| //-------------------------- |
| void* item_virtual_landscape() { |
| CImg<int> background(400,300,1,3,0), visu(background); |
| cimg_forXY(background,x,y) { |
| if (y>background.height()/2) { |
| background(x,y,2) = 255; |
| background(x,y,0) = (y - background.height()/2)*512/background.height(); |
| } else background(x,y,2) = y*512/background.height(); |
| } |
| const int white[] = { 255, 255, 255 }; |
| CImgDisplay disp(visu.draw_text(10,10,"Please wait, generating landscape...",white). |
| normalize(0,255),"[#12] - Virtual Landscape",0); |
| CImg<float> |
| map = 5.0*(CImg<>(700,700,1,1,300).noise(300).draw_plasma(0.2f,300).normalize(-140,150).blur(5).cut(0,150)), |
| cmap(map.width(),map.height()); |
| CImg_3x3(I,float); Ipp = Inp = Icc = Ipn = Inn = 0; |
| cimg_for3x3(map,x,y,0,0,I,float) { |
| const float nox = 0.5f*(Inc - Ipc), noy = 0.5f*(Icn - Icp); |
| cmap(x,y) = std::max(0.0f,0.5f*nox + noy); |
| } |
| cmap.normalize(0,255); |
| |
| for (float t = 0; !disp.is_closed() && !disp.is_keyQ() && !disp.is_keyESC(); t+=0.0025f) { |
| visu = background; |
| const int |
| xm = (int)(map.width()/2 + (map.width()/3)*std::cos(4.2f*t)), |
| ym = (int)(map.height()/2 + (map.height()/3)*std::sin(5.6f*t)); |
| const CImg<float> |
| smap = map.get_crop(xm,ym,xm + 100,ym + 90), |
| scmap = cmap.get_crop(xm,ym,xm + 100,ym + 90); |
| CImg<int> ymin(visu.width(),1,1,1,visu.height()), ymax(ymin.width(),1,1,1,0); |
| cimg_forY(smap,z) { |
| const int y0 = (int)(visu.height() - 1 - 10*std::pow((double)z,0.63) + 80); |
| cimg_forX(visu,x) { |
| const int nz = smap.height() - z; |
| float mx = x*(smap.width() - 2.0f*nz*0.2f)/visu.width() + 0.2f*nz; |
| const int y = (int)(y0 - smap.linear_atX(mx,z)/(1 + 0.02*z)); |
| const float cc = (float)scmap.linear_atX(mx,z); |
| if (y<visu.height() && y<ymin(x)) { |
| const float cz = (smap.height() - (float)z)/smap.height(), czz = cz>0.25?1:4*cz; |
| if (y!=y0) for (int l = y>0?y:0; l<ymin(x); ++l) { |
| visu(x,l,0) = (int)((1 - czz)*visu(x,l,0) + 4*cc*czz); |
| visu(x,l,1) = (int)((1 - czz)*visu(x,l,1) + 3*cc*czz); |
| visu(x,l,2) = (int)((1 - czz)*visu(x,l,2) + cc*czz); |
| } else for (int l = y>0?y:0; l<ymin(x); ++l) { |
| int cl = l - visu.height()/2; |
| visu(x,l,0) = 10; visu(x,l,1) = 200 - cl; visu(x,l,2) = 255 - cl; |
| } |
| } |
| ymin(x) = std::min(ymin(x),y); ymax(x) = std::max(ymax(x),y); |
| } |
| } |
| visu.draw_text(5,5,"%u frames/s",white,0,0.5f,13,(unsigned int)disp.frames_per_second()); |
| disp.resize(false).display(visu.cut(0,255)).wait(25); |
| if (disp.is_keyCTRLLEFT() && disp.is_keyF()) disp.resize(400,300,false).toggle_fullscreen(false); |
| } |
| return 0; |
| } |
| |
| // Item : Plasma Effect with Sinus Scrolling. |
| //------------------------------------------- |
| void* item_plasma() { |
| CImg<float> plasma, camp(3), cfreq(3), namp(3), nfreq(3); |
| CImgList<unsigned char> font = CImgList<unsigned char>::font(53); |
| CImg<unsigned char> visu(400,300,1,3,0), letter, scroll(visu.width() + 2*font['W'].width(),font['W'].height(),1,1,0); |
| const char *text = " * The CImg Library : C++ Template Image Processing Toolkit *"; |
| CImgDisplay disp(visu,"[#13] - Plasma Effect"); |
| const unsigned char white[] = { 255, 255, 255 }; |
| unsigned int cplasma = 0, pos = 0, tpos = 0, lwidth = 0; |
| float tx = 0, ts = 0, alpha = 2, beta = 0; |
| namp.fill(0).noise(visu.height()/4,0); |
| nfreq.fill(0).noise(0.1); |
| |
| visu.draw_text(10,10,"Please wait, generating plasma...",white).display(disp); |
| const unsigned int nb_plasmas = 5; |
| plasma.assign(5*visu.width()/3,visu.height() + 1,1,nb_plasmas,0).noise(100).draw_plasma(); |
| cimg_forC(plasma,k) plasma.get_shared_channel(k).blur((float)(cimg::rand()*6)).normalize(0,255); |
| |
| while (!disp.is_closed() && !disp.is_keyQ() && !disp.is_keyESC()) { |
| if (alpha>1) { |
| alpha-=1; |
| cplasma = (cplasma + 1)%plasma.spectrum(); |
| camp = namp; |
| cfreq = nfreq; |
| namp.fill(0).noise(100).normalize(0,visu.height()/4.0f); |
| nfreq.fill(0).noise(0.2); |
| } |
| const unsigned int |
| v0 = cplasma, v1 = (cplasma + 1)%plasma.spectrum(), |
| v2 = (cplasma + 2)%plasma.spectrum(), v3 = (cplasma + 3)%plasma.spectrum(); |
| const float umalpha = 1 - alpha; |
| |
| unsigned char *ptr_r = visu.data(0,0,0,0), *ptr_g = visu.data(0,0,0,1), *ptr_b = visu.data(0,0,0,2); |
| cimg_forY(visu,y) { |
| const float |
| *ptr_r1 = plasma.data((unsigned int)std::max(0.0f,camp(0)*(1.1f + std::sin(tx + cfreq(0)*y))),y,v0), |
| *ptr_g1 = plasma.data((unsigned int)std::max(0.0f,camp(1)*(1.1f + std::sin(tx + cfreq(1)*y))),y,v1), |
| *ptr_b1 = plasma.data((unsigned int)std::max(0.0f,camp(2)*(2.0f + std::sin(tx + cfreq(2)*y))),y,v2), |
| *ptr_r2 = plasma.data((unsigned int)std::max(0.0f,namp(0)*(1.1f + std::sin(tx + nfreq(0)*y))),y,v1), |
| *ptr_g2 = plasma.data((unsigned int)std::max(0.0f,namp(1)*(1.1f + std::sin(tx + nfreq(1)*y))),y,v2), |
| *ptr_b2 = plasma.data((unsigned int)std::max(0.0f,namp(2)*(2.0f + std::sin(tx + nfreq(2)*y))),y,v3); |
| cimg_forX(visu,x) { |
| *(ptr_r++) = (unsigned char)(umalpha*(*(ptr_r1++)) + alpha*(*(ptr_r2++))); |
| *(ptr_g++) = (unsigned char)(umalpha*(*(ptr_g1++)) + alpha*(*(ptr_g2++))); |
| *(ptr_b++) = (unsigned char)(umalpha*(*(ptr_b1++)) + alpha*(*(ptr_b2++))); |
| } |
| } |
| if (!pos) { |
| const CImg<unsigned char>& letter = font(text[tpos] + 256); |
| lwidth = (unsigned int)letter.width(); |
| scroll.draw_image(visu.width(),letter); |
| (++tpos) %= std::strlen(text); |
| } |
| scroll.shift(-2); |
| if ((pos+=2)>lwidth + 2) pos = 0; |
| cimg_forX(visu,x) { |
| const int y0 = (int)(visu.height()/2 + visu.height()/4*std::sin(ts + x/(70 + 30*std::cos(beta)))); |
| cimg_forY(scroll,y) if (scroll(x,y)) { |
| const unsigned int y1 = y0 + y + 2; |
| const unsigned int y2 = y1 - 6; |
| const float c = scroll(x,y)/255.0f; |
| cimg_forC(visu,k) { |
| visu(x,y1,k) = (unsigned char)(visu(x,y1,k)*0.7f); |
| visu(x,y2,k) = (unsigned char)(visu(x,y2,k)*(1 - c) + 254*c); |
| } |
| } |
| } |
| alpha+=0.007f; beta+=0.04f; tx+=0.09f; ts+=0.04f; |
| disp.resize(false).display(visu).wait(20); |
| if (disp.is_keyCTRLLEFT() && disp.is_keyF()) disp.resize(640,480,false).toggle_fullscreen(false); |
| } |
| return 0; |
| } |
| |
| // Item : Oriented Convolutions |
| //------------------------------ |
| void* item_oriented_convolutions() { |
| const CImg<unsigned char> img = CImg<float>(data_milla,211,242,1,3).RGBtoYCbCr().channel(0).noise(50,2); |
| CImgList<unsigned char> visu = (img,img,img); |
| CImg<float> mask(16,16); |
| const float value = 255; |
| CImgDisplay disp(visu,"[#14] - Original image, Oriented kernel and Convolved image"); |
| for (float angle = 0; !disp.is_closed() && !disp.is_keyQ() && !disp.is_keyESC(); angle+=0.1f) { |
| const float ca = (float)std::cos(angle), sa = (float)std::sin(angle); |
| const CImg<float> |
| u = CImg<>::vector(ca,sa), |
| v = CImg<>::vector(-sa,ca), |
| tensor = 30.0*u*u.get_transpose() + 2.0*v*v.get_transpose(); |
| mask.draw_gaussian(0.5f*mask.width(),0.5f*mask.height(),tensor,&value); |
| mask/=mask.sum(); |
| visu[1] = mask.get_resize(img).normalize(0,255). |
| draw_text(2,2,"Angle = %d deg",&value,0,1,13,cimg::mod((int)(angle*180/cimg::PI),360)); |
| visu[2] = img.get_convolve(mask); |
| disp.resize(disp.window_width(),(int)(disp.height()*disp.window_width()/disp.width()),false). |
| display(visu).wait(25); |
| } |
| return 0; |
| } |
| |
| // Item : Shade Bobs |
| //------------------- |
| void* item_shade_bobs() { |
| float t = 100, rx = 0, ry = 0, rz = 0, rt = 0, rcx = 0; |
| CImg<unsigned char> img(512,512,1,1,0), palette; |
| CImgDisplay disp(img,"[#15] - Shade Bobs"); |
| const unsigned char one = 1; |
| int nbbobs = 0, rybobs = 0; |
| while (!disp.is_closed() && !disp.is_keyQ() && !disp.is_keyESC()) { |
| if ((t+=0.015f)>4*cimg::PI) { |
| img.fill(0); |
| rx = (float)(cimg::rand(-1,1)); |
| ry = (float)(cimg::rand(-1,1)); |
| rz = (float)(cimg::rand(-1,1)); |
| rt = (float)(cimg::rand(-1,1)); |
| rcx = 0.6f*(float)(cimg::rand(-1,1)); |
| t = 0; |
| palette = CImg<unsigned char>(3,4 + (int)(12*cimg::rand()),1,1,0).noise(255,2).resize(3,256,1,1,3); |
| palette(0) = palette(1) = palette(2) = 0; |
| nbbobs = 20 + (int)(cimg::rand()*80); |
| rybobs = (10 + (int)(cimg::rand()*50))*std::min(img.width(),img.height())/300; |
| } |
| for (int i = 0; i<nbbobs; ++i) { |
| const float |
| r = (float)(ry + rx*std::cos(6*rz*t) + (1 - rx)*std::sin(6*rt*t)), |
| a = (float)((360*std::sin(rz*t) + 30*ry*i)*cimg::PI/180), |
| ax = (float)(i*2*cimg::PI/nbbobs + t); |
| const int |
| cx = (int)((1 + rcx*std::cos(ax) + r*std::cos(a))*img.width()/2), |
| cy = (int)((1 + rcx*std::sin(ax) + r*std::sin(a))*img.height()/2); |
| img.draw_circle(cx,cy,rybobs,&one,-1.0f); |
| } |
| CImg_3x3(I,unsigned char); Ipp = Inp = Ipn = Inn = 0; |
| CImg<unsigned char> tmp(img); |
| cimg_for3x3(tmp,x,y,0,0,I,unsigned char) img(x,y) = (Inc + Ipc + Icn + Icp + (Icc<<2))>>3; |
| CImg<unsigned char> visu(img.width(),img.height(),1,3); |
| cimg_forXY(visu,xx,yy) { |
| const unsigned char *col = palette.data(0,img(xx,yy)); |
| visu(xx,yy,0) = *(col++); |
| visu(xx,yy,1) = *(col++); |
| visu(xx,yy,2) = *(col++); |
| } |
| disp.display(visu).wait(25); |
| if (disp.is_keyCTRLLEFT() && disp.is_keyF()) disp.resize(640,480,false).toggle_fullscreen(false); |
| if (disp.is_resized()) img.resize(disp.resize(false),3); |
| if ((disp.key() && !disp.is_keyCTRLLEFT()) || disp.button()) { |
| t = 70; if (!(disp.is_keyQ() || disp.is_keyESC())) disp.set_key(); |
| disp.set_button(); |
| } |
| } |
| return 0; |
| } |
| |
| // Item : Fourier Filtering |
| //------------------------- |
| void* item_fourier_filtering() { |
| const CImg<unsigned char> img = CImg<float>(data_milla,211,242,1,3).RGBtoYCbCr().channel(0).resize(256,256); |
| CImgList<float> F = img.get_FFT(); |
| cimglist_apply(F,shift)(img.width()/2,img.height()/2,0,0,2); |
| const CImg<unsigned char> mag = ((F[0].get_pow(2) + F[1].get_pow(2)).sqrt() + 1).log().normalize(0,255); |
| CImgList<unsigned char> visu(img,mag); |
| CImgDisplay disp(visu,"[#16] - Fourier Filtering (Click to set filter)"); |
| CImg<unsigned char> mask(img.width(),img.height(),1,1,1); |
| const unsigned char one[] = { 1 }, zero[] = { 0 }, white[] = { 255 }; |
| int rmin = 0, rmax = 256; |
| while (!disp.is_closed() && !disp.is_keyQ() && !disp.is_keyESC()) { |
| disp.wait(); |
| const int |
| xm = disp.mouse_x()*2*img.width()/disp.width() - img.width(), |
| ym = disp.mouse_y()*img.height()/disp.height(), |
| x = xm - img.width()/2, |
| y = ym - img.height()/2; |
| if (disp.button() && xm>=0 && ym>=0) { |
| const int r = (int)std::max(0.0f,(float)std::sqrt((float)x*x + y*y) - 3); |
| if (disp.button()&1) rmax = r; |
| if (disp.button()&2) rmin = r; |
| if (rmin>=rmax) rmin = std::max(rmax - 1,0); |
| mask.fill(0).draw_circle(mag.width()/2,mag.height()/2,rmax,one). |
| draw_circle(mag.width()/2,mag.height()/2,rmin,zero); |
| CImgList<float> nF(F); |
| cimglist_for(F,l) nF[l].mul(mask).shift(-img.width()/2,-img.height()/2,0,0,2); |
| visu[0] = nF.FFT(true)[0].normalize(0,255); |
| } |
| if (disp.is_resized()) disp.resize(disp.window_width(),disp.window_width()/2).display(visu); |
| visu[1] = mag.get_mul(mask).draw_text(5,5,"Freq Min/Max = %d / %d",white,zero,0.6f,13,(int)rmin,(int)rmax); |
| visu.display(disp); |
| } |
| return 0; |
| } |
| |
| // Item : Image Zoomer |
| //--------------------- |
| void* item_image_zoomer() { |
| const CImg<unsigned char> img = CImg<unsigned char>(data_logo,555,103,1,3,false); |
| CImgDisplay disp(img,"[#17] - Original Image"), dispz(500,500,"[#17] - Zoomed Image",0); |
| disp.move((CImgDisplay::screen_width() - dispz.width())/2, |
| (CImgDisplay::screen_height() - dispz.height() - disp.height())/2); |
| dispz.move(disp.window_x(),disp.window_y() + disp.window_height() + 40); |
| int factor = 20, x = 0, y = 0; |
| bool grid = false, redraw = false; |
| while (!disp.is_closed() && !dispz.is_closed() && |
| !disp.is_keyQ() && !dispz.is_keyQ() && !disp.is_keyESC() && !dispz.is_keyESC()) { |
| if (disp.mouse_x()>=0) { x = disp.mouse_x(); y = disp.mouse_y(); redraw = true; } |
| if (redraw) { |
| const int |
| x0 = x - factor, y0 = y - factor, |
| x1 = x + factor, y1 = y + factor; |
| const unsigned char red[] = { 255, 0, 0 }, black[] = { 0, 0, 0 }, white[] = { 255, 255, 255 }; |
| (+img).draw_rectangle(x0,y0,x1,y1,red,1.0f,~0U).display(disp); |
| CImg<unsigned char> visu = img.get_crop(x0,y0,x1,y1).draw_point(x - x0,y - y0,red,0.2f).resize(dispz); |
| if (grid) { |
| const int bfac = 2*factor + 1; |
| for (int i = 0; i<bfac; ++i) { |
| const int X = i*dispz.width()/bfac, Y = i*dispz.height()/bfac; |
| visu.draw_line(X,0,X,dispz.height() - 1,black).draw_line(0,Y,dispz.width() - 1,Y,black); |
| } |
| } |
| visu.draw_text(2,2,"Coords (%d,%d)",white,0,1,13,x,y).display(dispz); |
| } |
| if (disp.button()&1) { |
| factor = (int)(factor/1.5f); |
| if (factor<3) factor = 3; |
| disp.set_button(); redraw = true; |
| } |
| if (disp.button()&2) { |
| factor = (int)(factor*1.5f); |
| if (factor>100) factor = 100; |
| disp.set_button(); redraw = true; |
| } |
| if (disp.button()&4 || dispz.button()) { grid = !grid; disp.set_button(); dispz.set_button(); redraw = true; } |
| if (disp.is_resized()) disp.resize(disp); |
| if (dispz.is_resized()) { dispz.resize(); redraw = true; } |
| CImgDisplay::wait(disp,dispz); |
| } |
| return 0; |
| } |
| |
| // Item : Blobs Editor |
| //-------------------- |
| void* item_blobs_editor() { |
| CImg<unsigned int> img(300,300,1,3); |
| CImgList<unsigned int> colors; |
| CImgList<float> blobs; |
| CImgDisplay disp(img,"[#18] - Blobs Editor",0); |
| const unsigned int white[] = { 255, 255, 255 }; |
| bool moving = false; |
| |
| for (float alpha = 0; !disp.is_closed() && !disp.is_keyQ() && !disp.is_keyESC(); alpha+=0.1f) { |
| const int xm = disp.mouse_x()*img.width()/disp.width(), ym = disp.mouse_y()*img.height()/disp.height(); |
| int selected = -1; |
| img.fill(0); |
| |
| if (blobs) { |
| float dist = 0, dist_min = (float)img.width()*img.width() + img.height()*img.height(); |
| cimglist_for(blobs,l) { |
| const CImg<float>& blob = blobs[l]; |
| const float |
| xb = blob[0], yb = blob[1], rb = blob[2], |
| sigma = (float)(rb*(1 + 0.05f*std::cos(blob[3]*alpha))), |
| sigma2 = 2*sigma*sigma, precision = 4.5f*sigma2; |
| const int |
| tx0 = (int)(xb - 3*sigma), |
| ty0 = (int)(yb - 3*sigma), |
| tx1 = (int)(xb + 3*sigma), |
| ty1 = (int)(yb + 3*sigma); |
| const unsigned int |
| col1 = colors[l](0), col2 = colors[l](1), col3 = colors[l](2), wh = img.width()*img.height(), |
| x0 = tx0<0?0:tx0, y0 = ty0<0?0:ty0, |
| x1 = tx1>=img.width()?img.width() - 1:tx1, y1 = ty1>=img.height()?img.height() - 1:ty1; |
| float dy = y0 - yb; |
| unsigned int *ptr = img.data(x0,y0); |
| for (unsigned int y = y0; y<=y1; ++y) { |
| float dx = x0 - xb; |
| for (unsigned int x = x0; x<=x1; ++x) { |
| float dist = dx*dx + dy*dy; |
| if (dist<precision) { |
| const float val = (float)std::exp(-dist/sigma2); |
| *ptr+=(unsigned int)(val*col1); |
| *(ptr + wh)+=(unsigned int)(val*col2); |
| *(ptr + 2*wh)+=(unsigned int)(val*col3); |
| } |
| ++dx; ++ptr; |
| } |
| ptr+=img.width() - (x1 -x0) - 1; |
| ++dy; |
| } |
| if ((dist = (xb - xm)*(xb - xm) + (yb - ym)*(yb - ym))<dist_min) { dist_min = dist; selected = l; } |
| } |
| |
| for (unsigned int *ptr1 = img.data(0,0,0,1), *ptr2 = img.data(0,0,0,2), *ptr3 = img.end(), |
| off = 0, wh = img.width()*img.height(); ptr1>img.data(); ++off) { |
| unsigned int val1 = *(--ptr1), val2 = *(--ptr2), val3 = *(--ptr3); |
| const unsigned int pot = val1*val1 + val2*val2 + val3*val3; |
| if (pot<128*128) { *ptr1 = *ptr3 = 255*off/wh; *ptr2 = 180*off/wh; } |
| else { |
| if (pot<140*140) { *ptr1 >>= 1; *ptr2 >>= 1; *ptr3 >>= 1; } |
| else { |
| *ptr1 = val1<255?val1:255; |
| *ptr2 = val2<255?val2:255; |
| *ptr3 = val3<255?val3:255; |
| } |
| } |
| } |
| cimglist_for(blobs,ll) { |
| const CImg<float>& blob = blobs[ll]; |
| const int |
| rb = (int)(blob[2]*(1 + 0.05f*std::cos(blob[3]*alpha))), |
| xb = (int)(blob[0] + rb/2.5f), |
| yb = (int)(blob[1] - rb/2.5f); |
| img.draw_circle(xb,yb,rb>>1,white,0.2f).draw_circle(xb,yb,rb/3,white,0.2f). |
| draw_circle(xb,yb,rb/5,white,0.2f); |
| } |
| } else { |
| CImg<unsigned int> text; |
| text.draw_text(0,0, |
| "CImg Blobs Editor\n" |
| "-----------------------\n\n" |
| "* Left mouse button :\n Create and Move Blob.\n\n" |
| "* Right mouse button :\n Remove nearest Blob.\n\n" |
| "* Colors and size of Appearing Blobs\n" |
| " are randomly chosen.\n\n\n" |
| " >> Press mouse button to start ! <<", |
| white).resize(-100,-100,1,3); |
| img.fill(100).draw_image((img.width() - text.width())/2, |
| (img.height() - text.height())/2, |
| text,text,1,255U); |
| } |
| |
| if (disp.mouse_x()>=0 && disp.mouse_y()>=0) { |
| if (disp.button()&1) { |
| float dist_selected = 0; |
| if (selected>=0) { |
| const float a = xm - blobs[selected](0), b = ym - blobs[selected](1), c = blobs[selected](2); |
| dist_selected = a*a + b*b - c*c; |
| } |
| if (moving || dist_selected<0) { blobs[selected](0) = (float)xm; blobs[selected](1) = (float)ym; } |
| else { |
| blobs.insert(CImg<>::vector((float)xm,(float)ym,(float)(10 + 30*cimg::rand()),(float)(3*cimg::rand()))); |
| colors.insert(CImg<>(3).fill(0).noise(255,1).normalize(0,255)); |
| } |
| moving = true; |
| } else moving = false; |
| if (selected>=0 && disp.button()&2) { blobs.remove(selected); colors.remove(selected); disp.set_button(); } |
| } |
| |
| img.display(disp.wait(25)); |
| if (disp.is_resized()) { |
| img.resize(disp.resize(false)); |
| cimglist_for(blobs,l) if (blobs[l](0)>=img.width() || blobs[l](1)>=img.height()) { |
| blobs.remove(l); colors.remove(l--); |
| } |
| } |
| } |
| return 0; |
| } |
| |
| // Item : Double Torus |
| //--------------------- |
| void* item_double_torus() { |
| CImg<unsigned char> visu(300,256,1,3,0); |
| CImgDisplay disp(visu,"[#19] - Double 3D Torus"); |
| CImgList<unsigned int> primitives; |
| CImg<float> |
| points = CImg<>::torus3d(primitives,60,20), |
| points2 = CImg<>::rotation_matrix(1,0,0,90)*points; |
| CImgList<unsigned char> colors(2*primitives.size(),CImg<unsigned char>::vector(255,255,0)); |
| cimglist_for(primitives,ll) colors[ll++].fill(100,255,100); |
| cimglist_for(primitives,l) |
| if (l%2) colors[primitives.size() + l].fill(255,200,255); else colors[primitives.size() + l].fill(200,150,255); |
| const CImg<float> opacities = CImg<>(primitives.size(),1,1,1,1.0f).append(CImg<>(primitives.size(),1,1,1,0.4f)); |
| points.shift_object3d(-30,0,0).append_object3d(primitives,points2.shift_object3d(30,0,0),primitives); |
| float alpha = 0, beta = 0, gamma = 0, theta = 0; |
| while (!disp.is_closed() && !disp.is_keyQ() && !disp.is_keyESC()) { |
| visu.get_shared_channels(1,2).fill(0); |
| visu.get_shared_row(visu.height() - 1,0,0).noise(200,1); |
| CImg_3x3(I,unsigned char); Ipp = Icp = Inp = Ipc = Inc = 0; |
| cimg_for3x3(visu,x,y,0,0,I,unsigned char) visu(x,y,0) = (Icc + Ipn + Icn + Inn)>>2; |
| for (unsigned int y = 0; y<100; ++y) std::memset(visu.data(0,y,0,2),255 - y*255/100,visu.width()); |
| const CImg<float> |
| rpoints = CImg<>::rotation_matrix(1,1,0,(alpha+=1))*CImg<>::rotation_matrix(1,0,1,(beta-=2))* |
| CImg<>::rotation_matrix(0,1,1,(gamma+=3))*points; |
| if (disp.is_resized()) disp.resize(false); |
| if (disp.is_keyCTRLLEFT() && disp.is_keyF()) disp.resize(300,256,false).toggle_fullscreen(false); |
| visu.draw_object3d(visu.width()/2.0f,visu.height()/2.0f,0, |
| rpoints,primitives,colors,opacities,4, |
| false,500.0f,(float)(std::cos(theta+=0.01f) + 1)*visu.width()/2.0f, |
| (float)visu.height(),-100.0f,0.1f,1.5f). |
| display(disp.wait(25)); |
| } |
| return 0; |
| } |
| |
| // Item : 3D Metaballs |
| //--------------------- |
| struct metaballs3d { |
| float cx1, cy1, cz1, cx2, cy2, cz2, cx3, cy3, cz3; |
| inline float operator()(const float x, const float y, const float z) const { |
| const float |
| x1 = x - cx1, y1 = y - cy1, z1 = z - cz1, |
| x2 = x - cx2, y2 = y - cy2, z2 = z - cz2, |
| x3 = x - cx3, y3 = y - cy3, z3 = z - cz3, |
| r1 = 0.3f*(x1*x1 + y1*y1 + z1*z1), |
| r2 = 0.4f*(x2*x2 + y2*y2 + z2*z2), |
| r3 = 0.5f*(x3*x3 + y3*y3 + z3*z3); |
| float potential = 0; |
| if (r1<1.3f) potential+= 1.0f - r1*(r1*(4*r1 + 17) - 22)/9; |
| if (r2<1.3f) potential+= 1.0f - r2*(r2*(4*r2 + 17) - 22)/9; |
| if (r3<1.3f) potential+= 1.0f - r3*(r3*(4*r3 + 17) - 22)/9; |
| return potential; |
| } |
| }; |
| |
| void* item_3d_metaballs() { |
| CImg<unsigned char> img = CImg<unsigned char>(100,100,1,3,0).noise(100,2).draw_plasma(1,0,10). |
| resize(512,320,1,3).blur(4); |
| img.get_shared_channel(2)/=4; img.get_shared_channel(1)/=2; |
| metaballs3d met; |
| CImgList<unsigned int> primitives; |
| CImgList<unsigned char> colors; |
| const unsigned char white[] = { 255,255,255 }; |
| float alpha = 0, beta = 0, delta = 0, theta = 0, gamma = 0; |
| CImgDisplay disp(img,"[#20] - 3D Metaballs"); |
| while (!disp.is_closed() && !disp.is_keyQ() && !disp.is_keyESC()) { |
| met.cx2 = 1.5f*(float)std::cos(theta); met.cy2 = 2.5f*(float)std::sin(3*(theta+=0.017f)); met.cz2 = 0; |
| met.cx1 = 0; met.cy1 = 2.0f*(float)std::sin(4*gamma); met.cz1 = 1.2f*(float)std::cos(2*(gamma-=0.0083f)); |
| met.cx3 = 2.5f*(float)std::cos(2.5*delta); met.cy3 = 0; met.cz3 = 1.5f*(float)std::sin(2*(delta+=0.0125f)); |
| const CImg<float> |
| points = CImg<>::isosurface3d(primitives,met,0.8f,-4.5f,-4.5f,-3.5f,4.5f,4.5f,3.5f,24,24,24), |
| rot = 50.0*CImg<>::rotation_matrix(0,0,1,(alpha+=2))*CImg<>::rotation_matrix(1,1,0,(beta+=5.6f)), |
| rpoints = rot*points; |
| primitives.reverse_object3d(); |
| if (colors.size()<primitives.size()) colors.assign(primitives.size(),1,3,1,1); |
| cimglist_for(primitives,ll) { |
| colors(ll,0) = (unsigned char)(-60 + 191 + 64*ll/primitives.size()); |
| colors(ll,1) = (unsigned char)(-30 + 191 + 64*ll/primitives.size()); |
| colors(ll,2) = (unsigned char)(255*ll/primitives.size()); |
| } |
| if (primitives.size()) { |
| (+img).draw_object3d(img.width()/2.0f,img.height()/2.0f,0.0f, |
| rpoints,primitives, |
| colors.get_shared_images(0,primitives.size() - 1), |
| 4,false,500, 0,0,-500, 0.1f,1.5f). |
| draw_text(5,5,"%u frames/s",white,0,0.5f,13,(unsigned int)disp.frames_per_second()).display(disp.wait(20)); |
| } |
| if (disp.is_resized()) disp.resize(false); |
| if (disp.is_keyCTRLLEFT() && disp.is_keyF()) disp.resize(512,320,false).toggle_fullscreen(false); |
| } |
| return 0; |
| } |
| |
| // Item : Fireworks |
| //------------------ |
| void* item_fireworks() { |
| CImg<unsigned char> img(640,480,1,3,0); |
| CImgDisplay disp(img,"[#21] - Fireworks (Click to add/explode rockets)"); |
| CImgList<unsigned char> colors; |
| const unsigned char white[] = { 255,255,255 }, red[] = { 128,0,0 }; |
| CImgList<float> particles; |
| float time = 0, speed = 100.0f; |
| |
| while (!disp.is_closed() && !disp.is_keyQ() && !disp.is_keyESC()) { |
| |
| if (disp.button()&1 || !particles.size() || (--time)<0) { |
| particles.insert(CImg<>::vector((float)cimg::rand()*img.width(),(float)img.height(), |
| (float)cimg::rand(-1,1)*4,-6 - (float)cimg::rand()*3, |
| 30 + 60*(float)cimg::rand(),3)); |
| colors.insert(CImg<unsigned char>::vector(255,255,255)); |
| time = (float)(cimg::rand()*speed); |
| } |
| img*=0.92f; |
| |
| cimglist_for(particles,l) { |
| bool remove_particle = false; |
| float &x = particles(l,0), &y = particles(l,1), &vx = particles(l,2), &vy = particles(l,3), |
| &t = particles(l,4), &r = particles(l,5); |
| const float r2 = (t>0 || t<-42)?r/3:r*(1 - 2*(-(t + 2)/40.0f)/3); |
| img.draw_ellipse((int)x,(int)y,r,r2,(float)(std::atan2(vy,vx)*180/cimg::PI),colors[l].data(),0.6f); |
| x+=vx; y+=vy; vy+=0.09f; t--; |
| if (y>img.height() + 10 || x<0 || x>=img.width() + 10) remove_particle = true; |
| |
| if (t<0 && t>=-1) { |
| if ((speed*=0.9f)<10) speed=10.0f; |
| const unsigned char |
| r = (unsigned char)std::min(50 + 3*(unsigned char)(100*cimg::rand()), 255), |
| g = (unsigned char)std::min(50 + 3*(unsigned char)(100*cimg::rand()), 255), |
| b = (unsigned char)std::min(50 + 3*(unsigned char)(100*cimg::rand()), 255); |
| const float di = 10 + (float)cimg::rand()*60, nr = (float)cimg::rand()*30; |
| for (float i=0; i<360; i+=di) { |
| const float rad = i*(float)cimg::PI/180, c = (float)std::cos(rad), s = (float)std::sin(rad); |
| particles.insert(CImg<>::vector(x,y,2*c + vx/1.5f,2*s + vy/1.5f,-2.0f,nr)); |
| colors.insert(CImg<unsigned char>::vector(r,g,b)); |
| } |
| remove_particle = true; |
| } else if (t<-1) { r*=0.95f; if (r<0.5f) remove_particle=true; } |
| if (remove_particle) { particles.remove(l); colors.remove(l); l--; } |
| } |
| if (disp.button()&2) cimglist_for(particles,l) if (particles(l,4)>0) particles(l,4)=0.5f; |
| img.draw_text(5,5," %u frames/s ",white,red,0.5f,13,(unsigned int)disp.frames_per_second()); |
| disp.display(img).wait(25); |
| if (disp.is_keyCTRLLEFT() && disp.is_keyF()) disp.resize(640,480,false).toggle_fullscreen(false); |
| if (disp.is_resized()) disp.resize(disp,false); |
| } |
| return 0; |
| } |
| |
| // Item : Rubber Logo |
| //-------------------- |
| void* item_rubber_logo() { |
| const unsigned char white[] = { 255,255,255 }; |
| CImg<unsigned char> background = CImg<unsigned char>(300,300).noise(100,2); |
| background(0,0) = background(299,0) = background(299,299) = background(0,299) = 0; |
| background.draw_plasma().blur(1.0f,14.0f,0.0f,0).resize(-100,-100,1,3); |
| CImgDisplay disp(CImg<unsigned char>(background). |
| draw_text(10,10,"Please wait, generating rubber object...",white),"[#22] - 3D Rubber Logo"); |
| |
| CImg<unsigned char> vol = CImg<unsigned char>().draw_text(30,30,"CImg",white,0,1,57).resize(-100,-100,15,1); |
| for (unsigned int k = 0; k<5; ++k) { vol.get_shared_slice(k).fill(0); vol.get_shared_slice(vol.depth()-1-k).fill(0); } |
| vol.resize(vol.width() + 30,vol.height() + 30,-100,1,0).blur(2).resize(-50,-50); |
| CImgList<unsigned int> faces; |
| CImg<float> points = vol.get_isosurface3d(faces,45); |
| CImgList<unsigned int> colors(faces.size(),CImg<unsigned char>::vector(100,100,255)); |
| cimglist_for(colors,l) { |
| const float x = (points(faces(l,0),0) + points(faces(l,1),0) + points(faces(l,2),0))/3; |
| if (x<30.3) colors[l] = CImg<unsigned char>::vector(255,100,100); |
| else { if (x<34.6) colors[l] = CImg<unsigned char>::vector(200,155,100); |
| else { if (x<55.5) colors[l] = CImg<unsigned char>::vector(100,255,155); |
| }}} |
| faces.reverse_object3d(); |
| points.shift_object3d()*=5.5f; |
| |
| CImgList<unsigned char> frames(100,background); |
| bool ok_visu = false; |
| unsigned int nb_frame = 0; |
| float alpha = 0, beta = 0, gamma = 0; |
| |
| while (!disp.is_closed() && !disp.is_keyQ() && !disp.is_keyESC()) { |
| CImg<unsigned char>& frame = frames[nb_frame++]; |
| if (nb_frame>=frames.size()) { ok_visu = true; nb_frame = 0; } |
| const CImg<float> |
| rot = CImg<>::rotation_matrix(0,1,0.2f,alpha+=1.1f)* |
| CImg<>::rotation_matrix(1,0.4f,1,beta+=1.5f)* |
| (1 + 0.1f*std::cos((double)(gamma+=0.1f))); |
| (frame=background).draw_object3d(frame.width()/2.0f,frame.height()/2.0f,frame.depth()/2.0f, |
| rot*points,faces,colors,5,false,500,0,0,-5000,0.1f,1.0f); |
| if (ok_visu) { |
| CImg<unsigned char> visu(frame); |
| cimglist_for(frames,l) { |
| const unsigned int |
| y0 = l*visu.height()/frames.size(), |
| y1 = (l + 1)*visu.height()/frames.size() - 1; |
| cimg_forC(visu,k) |
| visu.get_shared_rows(y0,y1,0,k) = frames[(nb_frame + l)%frames.size()].get_shared_rows(y0,y1,0,k); |
| } |
| visu.get_resize(disp,1).draw_text(5,5," %u frames/s ",white,0,0.5f,13,(unsigned int)disp.frames_per_second()). |
| display(disp.wait(20)); |
| } |
| if (disp.is_keyCTRLLEFT() && disp.is_keyF()) disp.resize(300,300,false).toggle_fullscreen(false); |
| if (disp.is_resized()) disp.resize(); |
| } |
| return 0; |
| } |
| |
| // Item : Image Waves |
| //-------------------- |
| void* item_image_waves() { |
| const CImg<unsigned char> img = CImg<unsigned char>(data_milla,211,242,1,3,false).get_resize(128,128,1,3); |
| CImgList<unsigned int> faces0; |
| CImgList<unsigned char> colors0; |
| const CImgList<float> |
| points0 = (img.get_elevation3d(faces0,colors0,img.get_channel(0).fill(0)).shift_object3d()*=3)<'x', |
| opacities0(faces0.size(),1,1,1,1,1.0f); |
| CImg<unsigned char> |
| back = CImg<unsigned char>(400,300,1,3).sequence(0,130), |
| ball = CImg<unsigned char>(12,12,1,3,0).draw_circle(6,6,5,CImg<unsigned char>::vector(0,128,64).data()); |
| const CImg<float> mball = CImg<>(12,12,1,1,0).draw_circle(6,6,5,CImg<>::vector(1.0f).data()); |
| ball.draw_circle(7,5,4,CImg<unsigned char>::vector(16,96,52).data()). |
| draw_circle(8,4,2,CImg<unsigned char>::vector(0,128,64).data()). |
| draw_circle(8,4,1,CImg<unsigned char>::vector(64,196,128).data()); |
| CImg<float> uc(img.width()/2,img.height()/2,1,1,0), up(uc), upp(uc); |
| CImgList<float> particles; |
| CImgDisplay disp(back,"[#23] - Image Waves (Try mouse buttons!)"); |
| for (float alpha = 0.0f, count = 10.0f; !disp.is_closed() && !disp.is_keyQ() && !disp.is_keyESC(); ) { |
| if ((disp.button()&1 && disp.mouse_x()>=0) || --count<0) { |
| CImg<>::vector((float)(cimg::rand()*(img.width() - 1)),(float)(cimg::rand()*(img.height() - 1)),-200,0). |
| move_to(particles); |
| count = (float)(cimg::rand()*15); |
| } |
| alpha = (disp.mouse_x()>=0 && disp.button()&2)?(float)(disp.mouse_x()*2*180/disp.width()):(alpha + 2); |
| if (disp.is_keyCTRLLEFT() && disp.is_keyF()) disp.resize(400,300,false).toggle_fullscreen(false); |
| cimglist_for(particles,l) { |
| float& z = up((int)particles(l,0)>>1,(int)particles(l,1)>>1); |
| if ((particles(l,2)+=(particles(l,3)+=0.5f))>z-10) { z = 250.0f; particles.remove(l--); } |
| } |
| CImg_3x3(U,float); Upp = Unp = Ucc = Upn = Unn = 0; |
| cimg_for3x3(up,x,y,0,0,U,float) uc(x,y) = (Unc + Upc + Ucn + Ucp)/2 - upp(x,y); |
| (uc-=(float)(uc.blur(0.7f).mean())).swap(upp).swap(up); |
| CImgList<float> points(points0); |
| CImgList<unsigned int> faces(faces0); |
| CImgList<unsigned char> colors(colors0); |
| CImgList<float> opacities(opacities0); |
| cimglist_for(points,p) |
| points(p,2) = std::min(30 + uc.linear_atXY((p%img.width())/2.0f,(p/img.width())/2.0f),70.0f); |
| cimglist_for(particles,l) { |
| points.insert(CImg<>::vector(3*(particles(l,0) - img.width()/2.0f),3*(particles(l,1) - img.height()/2.0f),30.0f + |
| particles(l,2))); |
| faces.insert(CImg<unsigned int>::vector(points.size() - 1)); |
| colors.insert(ball,~0U,true); |
| opacities.insert(mball,~0U,true); |
| } |
| const CImg<float> |
| rot = CImg<>::rotation_matrix(1.0f,0,0,-60)*CImg<>::rotation_matrix(0,0,1.0f,-alpha), |
| rpoints = rot*(points>'x'); |
| (+back).draw_object3d(back.width()/2.0f,back.height()/2.0f,0,rpoints,faces,colors,opacities,4,false, |
| 500.0f,0,0,0,1,1).display(disp.resize(false).wait(30)); |
| } |
| return 0; |
| } |
| |
| // Item : Breakout |
| //----------------- |
| void* item_breakout() { |
| |
| // Init graphics |
| CImg<unsigned char> |
| board(8,10,1,1,0), |
| background = CImg<unsigned char>(board.width()*32,board.height()*16 + 200,1,3,0).noise(20,1). |
| draw_plasma().blur(1,8,0,true), |
| visu0(background/2.0), visu(visu0), brick(16,16,1,1,200), racket(64,8,1,3,0), ball(8,8,1,3,0); |
| const unsigned char white[] = { 255,255,255 }, green1[] = { 60,150,30 }, green2[] = { 130,255,130 }; |
| cimg_for_borderXY(brick,x,y,1) brick(x,y) = x>y?255:128; |
| cimg_for_insideXY(brick,x,y,1) brick(x,y) = (unsigned char)std::min(255,64 + 8*(x + y)); |
| brick.resize(31,15,1,1,1).resize(32,16,1,1,0); |
| ball.draw_circle(4,4,2,white); ball-=ball.get_erode(3)/1.5; |
| racket.draw_circle(4,3,4,green1).draw_circle(3,2,2,green2); |
| cimg_forY(racket,y) |
| racket.draw_rectangle(4,y,racket.width() - 7,y, |
| CImg<unsigned char>::vector((unsigned char)(y*4), |
| (unsigned char)(255 - y*32), |
| (unsigned char)(255 - y*25)).data()); |
| racket.draw_image(racket.width()/2,racket.get_crop(0,0,racket.width()/2 - 1,racket.height() - 1).mirror('x')); |
| const int |
| w = visu.width(), h = visu.height(), w2 = w/2, h2 = h/2, |
| bw = ball.width(), bh = ball.height(), bw2 = bw/2, bh2 = bh/2, |
| rw = racket.width(), rh = racket.height(), rw2 = rw/2; |
| float xr = (float)(w - rw2), oxr = (float)xr, xb = 0, yb = 0, oxb = 0, oyb = 0, vxb = 0, vyb = 0; |
| const CImg<unsigned char> |
| racket_mask = racket.get_threshold(1).channel(1), |
| ball_mask = ball.get_threshold(1).channel(1); |
| |
| // Begin game loop |
| CImgDisplay disp(visu,"[#24] - Breakout"); |
| disp.move((CImgDisplay::screen_width() - w)/2,(CImgDisplay::screen_height() - h)/2); |
| for (unsigned int N = 0, N0 = 0; !disp.is_closed() && !disp.is_keyQ() && !disp.is_keyESC(); ) { |
| if (N0) { |
| int X = (int)xr; |
| if (disp.mouse_x()>=0) X = (int)(w2 + ((disp.mouse_x()<0?w2:disp.mouse_x()) - w2)*2); |
| else disp.set_mouse(xr>w2?w - 81:80,h2); |
| if (X<rw2) { X = rw2; disp.set_mouse(80,h2); } |
| if (X>=w - rw2) { X = w - rw2 - 1; disp.set_mouse(w - 81,h2); } |
| oxr = xr; xr = (float)X; oxb = xb; oyb = yb; xb+=vxb; yb+=vyb; |
| if ((xb>=w - bw2) || (xb<bw2)) { xb-=vxb; yb-=vyb; vxb=-vxb; } |
| if (yb<bh2) { yb = (float)bh2; vyb=-vyb; } |
| if (yb>=h - rh - 8 - bh2 && yb<h - 8 - bh2 && xr - rw2<=xb && xr + rw2>=xb) { |
| xb = oxb; yb = h - rh - 8.0f - bh2; vyb=-vyb; vxb+=(xr - oxr)/4; |
| if (cimg::abs(vxb)>8) vxb*=8/cimg::abs(vxb); |
| } |
| if (yb<board.height()*16) { |
| const int X = (int)xb/32, Y = (int)yb/16; |
| if (board(X,Y)) { |
| board(X,Y) = 0; |
| ++N; |
| const unsigned int |
| x0 = X*brick.width(), y0 = Y*brick.height(), |
| x1 = (X + 1)*brick.width() - 1, y1 = (Y + 1)*brick.height() - 1; |
| visu0.draw_image(x0,y0,background.get_crop(x0,y0,x1,y1)); |
| if (oxb<(X<<5) || oxb>=((X + 1)<<5)) vxb=-vxb; |
| else if (oyb<(Y<<4) || oyb>=((Y + 1)<<4)) vyb=-vyb; |
| } |
| } |
| disp.set_title("[#24] - Breakout : %u/%u",N,N0); |
| } |
| if (yb>h || N==N0) { |
| disp.show_mouse(); |
| while (!disp.is_closed() && !disp.key() && !disp.button()) { |
| ((visu=visu0)/=2).draw_text(50,visu.height()/2 - 10,N0?" Game Over !":"Get Ready ?",white,0,1,24). |
| display(disp); |
| disp.wait(); |
| if (disp.is_resized()) disp.resize(disp); |
| } |
| board.fill(0); visu0 = background; |
| cimg_forXY(board,x,y) if (0.2f + cimg::rand(-1,1)>=0) { |
| CImg<float> cbrick = CImg<double>::vector(100 + cimg::rand()*155,100 + cimg::rand()*155,100 + cimg::rand()*155). |
| unroll('v').resize(brick.width(),brick.height()); |
| cimg_forC(cbrick,k) (cbrick.get_shared_channel(k).mul(brick))/=255; |
| visu0.draw_image(x*32,y*16,cbrick); |
| board(x,y) = 1; |
| } |
| N0 = (int)board.sum(); N = 0; |
| oxb = xb = (float)w2; oyb = yb = board.height()*16.0f + bh; vxb = 2.0f; vyb = 3.0f; |
| disp.hide_mouse(); |
| } else disp.display((visu=visu0).draw_image((int)(xr - rw2),h - rh - 8,racket,racket_mask). |
| draw_image((int)(xb - bw2),(int)(yb - bh2),ball,ball_mask)); |
| if (disp.is_resized()) disp.resize(disp); |
| disp.wait(20); |
| } |
| return 0; |
| } |
| |
| // Item : 3D Reflection |
| //---------------------- |
| void* item_3d_reflection() { |
| |
| // Init images and display |
| CImgDisplay disp(512,512,"[#25] - 3D Reflection",0); |
| CImg<unsigned char> back = CImg<unsigned char>(200,400,1,3,0).rand(0,255).draw_plasma(); |
| ((back,back.get_mirror('x'),back)>'x').blur(15,1,0,true).columns(100,499).normalize(0,120).move_to(back); |
| CImg<unsigned char> |
| light0 = back.get_resize(-50,-50,1,1).normalize(1,255), |
| visu(back), |
| reflect(back.width(),back.height(),1,1), |
| light(light0); |
| back.get_shared_channel(0)/=3; |
| back.get_shared_channel(2)/=2; |
| |
| // Create 3D objects. |
| CImgList<unsigned int> back_faces, main_faces; |
| CImgList<unsigned char> main_colors, back_colors, light_colors, light_colors2; |
| CImgList<float> back_pts0, main_pts = CImg<>::torus3d(main_faces,30,12,24,12)<'x'; |
| cimglist_for(main_faces,l) |
| if (l%2) CImg<unsigned char>::vector(255,120,16).move_to(main_colors); |
| else CImg<unsigned char>::vector(255,100,16).move_to(main_colors); |
| |
| const unsigned int res1 = 32, res2 = 32; |
| for (unsigned int v = 1; v<res2; ++v) for (unsigned int u = 0; u<res1; ++u) { |
| const float |
| alpha = (float)(u*2*cimg::PI/res1), beta = (float)(-cimg::PI/2 + v*cimg::PI/res2), |
| x = (float)(std::cos(beta)*std::cos(alpha)), |
| y = (float)(std::cos(beta)*std::sin(alpha)), |
| z = (float)(std::sin(beta)); |
| back_pts0.insert(CImg<>::vector(x,y,z)); |
| } |
| const unsigned int N = back_pts0.size(); |
| back_pts0.insert(CImg<>::vector(0,0,-140)).insert(CImg<>::vector(0,0,140)); |
| CImg<float> back_pts = back_pts0>'x'; |
| for (unsigned int vv = 0; vv<res2 - 2; ++vv) for (unsigned int uu = 0; uu<res1; ++uu) { |
| const int nv = (vv + 1)%(res2 - 1), nu = (uu + 1)%res1; |
| back_faces.insert(CImg<unsigned int>::vector(res1*vv + nu,res1*nv + uu,res1*vv + uu)); |
| back_faces.insert(CImg<unsigned int>::vector(res1*vv + nu,res1*nv + nu,res1*nv + uu)); |
| back_colors.insert(CImg<unsigned char>::vector(128,255,255)); |
| back_colors.insert(CImg<unsigned char>::vector(64,240,196)); |
| } |
| for (unsigned int uu = 0; uu<res1; ++uu) { |
| const int nu = (uu + 1)%res1; |
| back_faces.insert(CImg<unsigned int>::vector(nu,uu,N)); |
| back_faces.insert(CImg<unsigned int>::vector(res1*(res2 - 2) + nu, N + 1,res1*(res2 - 2) + uu)); |
| if (uu%2) back_colors.insert(2,CImg<unsigned char>::vector(128,255,255)); |
| else back_colors.insert(2,CImg<unsigned char>::vector(64,240,196)); |
| } |
| light_colors.assign(main_faces.size(),CImg<unsigned char>::vector(255)); |
| light_colors2.assign(back_faces.size(),CImg<unsigned char>::vector(255)).insert(light,~0U,true); |
| |
| // Start 3D animation. |
| for (float main_x = -1.5f*visu.width(), |
| back_alpha = 0, back_beta = 0, back_theta = -3.0f, |
| main_alpha = 0, main_beta = 0, main_theta = 0; |
| !disp.is_closed() && !disp.is_keyQ() && !disp.is_keyESC(); |
| main_alpha+=2.1f, main_beta+=3.3f, main_theta+=0.02f, |
| back_alpha+=0.31f, back_beta+=0.43f, back_theta+=0.01f) { |
| const int |
| main_X = (int)(visu.width()/2 + main_x + 100*std::cos(2.1*main_theta)), |
| main_Y = (int)(visu.height()/2 + 120*std::sin(1.8*main_theta)); |
| CImg<float> |
| rmain_pts = (CImg<>::rotation_matrix(-1,1,0,main_alpha)*CImg<>::rotation_matrix(1,0,1,main_beta))*(main_pts>'x'), |
| rback_pts = (CImg<>::rotation_matrix(1,1,0,back_alpha)*CImg<>::rotation_matrix(0.5,0,1,back_beta))*back_pts; |
| |
| (light=light0).draw_object3d(main_X/2.0f,main_Y/2.0f,0,rmain_pts,main_faces,light_colors,3,false, |
| 500,0,0,-5000,0.2f,0.1f); |
| reflect.fill(0).draw_object3d(2*visu.width()/3.0f,visu.height()/2.0f,0,rback_pts,back_faces,light_colors2,5,false, |
| 500,0,0,-5000,0.2f,0.1f); |
| rmain_pts*=2; |
| (visu=back).draw_object3d(2*visu.width()/3.0f,visu.height()/2.0f,0,rback_pts,back_faces,back_colors,3,false, |
| 500,0,0,-5000,0.2f,0.1f); |
| |
| unsigned char |
| *ptrs = reflect.data(), |
| *ptrr = visu.data(0,0,0,0), |
| *ptrg = visu.data(0,0,0,1), |
| *ptrb = visu.data(0,0,0,2); |
| cimg_foroff(reflect,xy) { |
| const unsigned char v = *(ptrs++); |
| if (v) { *ptrr = (*ptrr+v)>>1; *ptrg = (*ptrr+v)>>1; *ptrb = (*ptrb+v)>>1; } |
| ++ptrr; ++ptrg; ++ptrb; |
| } |
| |
| visu.draw_object3d((float)main_X,(float)main_Y,0,rmain_pts,main_faces,main_colors,4, |
| false,500,0,0,-5000,0.1f,1.4f); |
| |
| if (disp.is_resized()) { |
| const int s = std::min(disp.window_width(),disp.window_height()); |
| disp.resize(s,s,false); |
| } |
| if (disp.is_keyCTRLLEFT() && disp.is_keyF()) disp.resize(512,512,false).toggle_fullscreen(false); |
| disp.display(visu).wait(20); |
| back.shift(4,0,0,0,2); |
| light0.shift(-2,0,0,0,2); |
| if (main_x<0) main_x +=2; |
| const float H = back_theta<0?0.0f:(float)(0.3f - 0.3f*std::cos(back_theta)); |
| for (unsigned int p = 0, v = 1; v<res2; ++v) for (unsigned int u = 0; u<res1; ++u) { |
| const float |
| alpha = (float)(u*2*cimg::PI/res1), beta = (float)(-cimg::PI/2 + v*cimg::PI/res2), |
| x = back_pts0(p,0), y = back_pts0(p,1), z = back_pts0(p,2), |
| altitude = 140*(float)cimg::abs(1 + H*std::sin(3*alpha)*std::cos(5*beta)); |
| back_pts(p,0) = altitude*x; back_pts(p,1) = altitude*y; back_pts(p,2) = altitude*z; |
| ++p; |
| } |
| } |
| return 0; |
| } |
| |
| // Item : Fish-Eye Magnification |
| //------------------------------ |
| void* item_fisheye_magnification() { |
| const unsigned char purple[] = { 255, 0, 255 }, white[] = { 255, 255, 255 }, black[] = { 0, 0, 0 }; |
| const CImg<unsigned char> img0 = CImg<unsigned char>(data_logo,555,103,1,3,true).get_resize(-144,-144,1,3,6); |
| CImgDisplay disp(img0,"[#26] - Fish-Eye Magnification"); |
| int rm = 80, xc = 0, yc = 0, rc = 0; |
| CImg<unsigned char> img, res; |
| for (float alpha = 0; !disp.is_closed() && !disp.is_keyQ() && !disp.is_keyESC(); alpha+=0.02f) { |
| if (!img) img = img0.get_resize(disp,3); |
| if (disp.mouse_x()>=0) { xc = disp.mouse_x(); yc = disp.mouse_y(); rc = rm; } |
| else { |
| xc = (int)(img.width()*(1 + 0.9f*std::cos(1.2f*alpha))/2); |
| yc = (int)(img.height()*(1 + 0.8f*std::sin(3.4f*alpha))/2); |
| rc = (int)(90 + 60*std::sin(alpha)); |
| } |
| const int x0 = xc - rc, y0 = yc - rc, x1 = xc + rc, y1 = yc + rc; |
| res = img; |
| cimg_for_inXY(res,x0,y0,x1,y1,x,y) { |
| const float X = (float)x - xc, Y = (float)y - yc, r2 = X*X + Y*Y, rrc = (float)std::sqrt(r2)/rc; |
| if (rrc<1) { |
| const int xi = (int)(xc + rrc*X), yi = (int)(yc + rrc*Y); |
| res(x,y,0) = img(xi,yi,0); res(x,y,1) = img(xi,yi,1); res(x,y,2) = img(xi,yi,2); |
| } |
| } |
| const int xf = xc + 3*rc/8, yf = yc - 3*rc/8; |
| res.draw_circle(xc,yc,rc,purple,0.2f).draw_circle(xf,yf,rc/3,white,0.2f).draw_circle(xf,yf,rc/5,white,0.2f). |
| draw_circle(xf,yf,rc/10,white,0.2f).draw_circle(xc,yc,rc,black,0.7f,~0U); |
| disp.display(res).wait(20); |
| rm+=(disp.button()&1?8:(disp.button()&2?-8:0)); |
| rm = rm<30?30:(rm>200?200:rm); |
| if (disp.is_resized()) { disp.resize(false); img.assign(); } |
| } |
| return 0; |
| } |
| |
| // Item : Word Puzzle |
| //-------------------- |
| void* item_word_puzzle() { |
| |
| // Create B&W and color letters |
| CImg<unsigned char> model(60,60,1,3,0), color(3), background, canvas, elaps; |
| CImgList<unsigned char> letters('Z' - 'A' + 1), cletters(letters); |
| const unsigned char white[] = { 255, 255, 255 }, gray[] = { 128, 128, 128 }, black[] = { 0, 0, 0 }; |
| char tmptxt[] = { 'A',0 }; |
| model.fill(255).draw_rectangle(5,5,54,54,gray).blur(3,0).threshold(140).normalize(0,255); |
| cimglist_for(letters,l) |
| (letters[l].draw_text(5,2,&(tmptxt[0]=(char)('A' + l)),white,0,1,57).resize(60,60,1,1,0,0,0.5,0.5). |
| resize(-100,-100,1,3)|=model).blur(0.5); |
| { cimglist_for(cletters,l) { |
| CImg<int> tmp = letters[l]; |
| color.rand(100,255); |
| cimg_forC(tmp,k) (tmp.get_shared_channel(k)*=color[k])/=255; |
| cletters[l] = tmp; |
| }} |
| |
| CImgDisplay disp(500,400,"[#27] - Word Puzzle",0); |
| while (!disp.is_closed() && !disp.is_keyQ() && !disp.is_keyESC()) { |
| |
| // Create background, word data and display. |
| background.assign(40,40,1,2,0).noise(30,2).distance(255).normalize(0,255).resize(500,400,1,3,3); |
| CImg<int> current(14,6,1,1,0), solution(14,4,1,1,0); |
| current.get_shared_row(0).fill('T','H','E','C','I','M','G','L','I','B','R','A','R','Y'); |
| current.get_shared_row(1).rand(-30,background.width() - 30); |
| current.get_shared_row(2).rand(-30,background.height() - 30); |
| solution.get_shared_row(0) = current.get_shared_row(0); |
| solution.get_shared_row(1).fill(20,80,140,100,180,260,340,40,100,160,220,280,340,400); |
| solution.get_shared_row(2).fill(20,20,20,120,150,180,210,310,310,310,310,310,310,310); |
| cimg_forX(solution,l) background.draw_image(solution(l,1),solution(l,2),letters(solution(l) - 'A'),0.3f); |
| const int last = current.width() - 1; |
| |
| // Start user interaction |
| int timer = 0, completed = 0; |
| for (bool selected = false, refresh_canvas = true, stopflag = false; |
| !stopflag && !disp.is_closed() && !disp.is_keyQ() && !disp.is_keyESC(); disp.resize(disp).wait(20)) { |
| if (refresh_canvas) { |
| canvas = background; |
| cimg_forX(current,l) if (!current(l,5)) { |
| int &x = current(l,1), &y = current(l,2); |
| if (x<-30) x = -30; else if (x>canvas.width() - 30) x = canvas.width() - 30; |
| if (y<-30) y = -30; else if (y>canvas.height() - 30) y = canvas.height() - 30; |
| canvas.draw_rectangle(x + 8,y + 8,x + 67,y + 67,black,0.3f).draw_image(x,y,cletters(current(l) - 'A')); |
| } |
| refresh_canvas = false; |
| } |
| (+canvas).draw_text(280,3,"Elapsed Time : %d",white,0,0.7f,24,timer++).display(disp); |
| |
| if (disp.button()&1) { |
| const int mx = disp.mouse_x(), my = disp.mouse_y(); |
| if (mx>=0 && my>=0) { |
| if (!selected) { |
| int ind = -1; |
| cimg_forX(current,l) if (!current(l,5)) { |
| const int x = current(l,1), y = current(l,2), dx = mx - x, dy = my - y; |
| if (dx>=0 && dx<60 && dy>=0 && dy<60) { selected = true; ind = l; current(l,3) = dx; current(l,4) = dy; } |
| } |
| if (ind>=0 && ind<last) { |
| const CImg<int> vec = current.get_column(ind); |
| current.draw_image(ind,current.get_crop(ind + 1,last)).draw_image(last,vec); |
| } |
| } else { |
| current(last,1) = mx - current(last,3); |
| current(last,2) = my - current(last,4); |
| refresh_canvas = true; |
| } |
| } |
| } else { |
| bool win = true; |
| cimg_forX(solution,j) if (!solution(j,3)) { |
| win = false; |
| const int x = solution(j,1), y = solution(j,2); |
| cimg_forX(current,i) if (!current(i,5) && solution(j)==current(i)) { |
| const int xc = current(i,1), yc = current(i,2), dx = cimg::abs(x - xc), dy = cimg::abs(y - yc); |
| if (dx<=12 && dy<=12) { |
| cimg_forC(background,k) cimg_forY(letters[0],y) |
| background.get_shared_row(solution(j,2) + y,0,k). |
| draw_image(solution(j,1),0, |
| (CImg<>(cletters(solution(j) - 'A').get_shared_row(y,0,k))*=2.0*std::cos((y - 30.0f)/18)). |
| cut(0,255),0.8f); |
| current(i,5) = solution(j,3) = 1; refresh_canvas = true; |
| } |
| } |
| } |
| selected = false; |
| if (win) { stopflag = true; completed = 1; } |
| } |
| } |
| |
| // Display final score |
| const char |
| *const mention0 = "Need more training !", *const mention1 = "Still amateur, hu ?", |
| *const mention2 = "Not so bad !", *const mention3 = " Good !", *const mention4 = "Very good !", |
| *const mention5 = " Expert !", |
| *mention = completed?(timer<700?mention5:timer<800?mention4:timer<900?mention3: |
| timer<1000?mention2:timer<1200?mention1:mention0):mention0; |
| canvas.assign().draw_text(0,0,"Final time : %d\n\n%s",white,0,1,32,timer,mention).resize(-100,-100,1,3); |
| ((background/=2)&CImg<unsigned char>(2,2).fill((unsigned char)0,255,255,0).resize(background,0,2)). |
| draw_image((background.width() - canvas.width())/2,(background.height() - canvas.height())/2, |
| canvas,canvas.get_dilate(3).dilate(3).dilate(3),1,255).display(disp.flush()); |
| while (!disp.is_closed() && !disp.key() && !disp.button()) disp.resize(disp).wait(); |
| } |
| return 0; |
| } |
| |
| // Run a selected effect |
| //----------------------- |
| void start_item(const unsigned int demo_number) { |
| switch (demo_number) { |
| case 1: item_blurring_gradient(); break; |
| case 2: item_rotozoom(); break; |
| case 3: item_anisotropic_smoothing(); break; |
| case 4: item_fractal_animation(); break; |
| case 5: item_gamma_correction(); break; |
| case 6: item_filled_triangles(); break; |
| case 7: item_mandelbrot_explorer(); break; |
| case 8: item_mini_paint(); break; |
| case 9: item_soccer_bobs(); break; |
| case 10: item_bump(); break; |
| case 11: item_bouncing_bubble(); break; |
| case 12: item_virtual_landscape(); break; |
| case 13: item_plasma(); break; |
| case 14: item_oriented_convolutions(); break; |
| case 15: item_shade_bobs(); break; |
| case 16: item_fourier_filtering(); break; |
| case 17: item_image_zoomer(); break; |
| case 18: item_blobs_editor(); break; |
| case 19: item_double_torus(); break; |
| case 20: item_3d_metaballs(); break; |
| case 21: item_fireworks(); break; |
| case 22: item_rubber_logo(); break; |
| case 23: item_image_waves(); break; |
| case 24: item_breakout(); break; |
| case 25: item_3d_reflection(); break; |
| case 26: item_fisheye_magnification(); break; |
| case 27: item_word_puzzle(); break; |
| default: break; |
| } |
| } |
| |
| /*--------------------------- |
| |
| Main procedure |
| |
| --------------------------*/ |
| int main(int argc, char **argv) { |
| |
| // Display info about the CImg Library configuration |
| //-------------------------------------------------- |
| unsigned int demo_number = cimg_option("-run",0,0); |
| if (demo_number) start_item(demo_number); |
| else { |
| cimg::info(); |
| |
| // Demo selection menu |
| //--------------------- |
| const unsigned char |
| white[] = { 255, 255, 255 }, black[] = { 0, 0, 0 }, red[] = { 120, 50, 80 }, |
| yellow[] = { 200, 155, 0 }, green[] = { 30, 200, 70 }, purple[] = { 175, 32, 186 }, |
| blue[] = { 55, 140, 185 }, grey[] = { 127, 127, 127 }; |
| float |
| rx = 0, ry = 0, t = 0, gamma = 0, vgamma = 0, T = 0.9f, |
| nrx = (float)(2*cimg::rand(-1,1)), |
| nry = (float)(2*cimg::rand(-1,1)); |
| int y0 = 2*13; |
| CImg<unsigned char> back(1,2,1,3,10), fore, text, img; |
| back.fillC(0,1,0,10,10,235).resize(350,570,1,3,3).get_shared_channel(2).noise(10,1).draw_plasma(); |
| back.draw_rectangle(0,y0 - 7,back.width() - 1,y0 + 20,red); |
| fore.assign(back.width(),50,1,1,0).draw_text(20,y0 - 3,"** CImg %u.%u.%u Samples **",grey,0,1,23, |
| cimg_version/100,(cimg_version/10)%10,cimg_version%10); |
| fore.max(fore.get_threshold(1).dilate(3)).resize(-100,-100,1,3); |
| cimg_forXY(fore,x,y) if (fore(x,y)>1) { |
| const float val = std::min(255.0f,7.0f*(y - 3))*fore(x,y)/127; |
| fore(x,y,0) = (unsigned char)(val/1.5f); |
| fore(x,y,1) = (unsigned char)val; |
| fore(x,y,2) = (unsigned char)(val/1.1f); |
| } |
| text.draw_text(1,1, |
| "1- Blurring Gradient\n" |
| "2- Rotozoom\n" |
| "3- Anisotropic Smoothing\n" |
| "4- Fractal Animation\n" |
| "5- Gamma Correction\n" |
| "6- Filled Triangles\n" |
| "7- Mandelbrot explorer\n" |
| "8- Mini-Paint\n" |
| "9- Soccer Bobs\n" |
| "10- Bump Effect\n" |
| "11- Bouncing Bubble\n" |
| "12- Virtual Landscape\n" |
| "13- Plasma & Sinus Scroll\n" |
| "14- Oriented Convolutions\n" |
| "15- Shade Bobs\n" |
| "16- Fourier Filtering\n" |
| "17- Image Zoomer\n" |
| "18- Blobs Editor\n" |
| "19- Double Torus\n" |
| "20- 3D Metaballs\n" |
| "21- Fireworks\n" |
| "22- Rubber Logo\n" |
| "23- Image Waves\n" |
| "24- Breakout\n" |
| "25- 3D Reflection\n" |
| "26- Fish-Eye Magnification\n" |
| "27- Word Puzzle\n", |
| white,0,1,18).resize(-100,-100,1,3); |
| fore.resize(back,0).draw_image(20,y0 + 3*13,text|=text.get_dilate(3)>>4); |
| |
| CImgDisplay disp(back,"CImg Library Samples",0,false,true); |
| disp.move((disp.screen_width() - disp.window_width())/2,(disp.screen_height() - disp.window_height())/2); |
| img = back; back*=0.15f; |
| for (y0+=3*13; !disp.is_closed() && !disp.is_keyQ() && !disp.is_keyESC(); demo_number = 0) { |
| while (!demo_number && !disp.is_closed() && !disp.is_keyQ() && !disp.is_keyESC()) { |
| img*=0.85f; img+=back; |
| for (int i = 0; i<60; ++i) { |
| const float |
| mx = (float)(img.width()/2 + (img.width()/2 - 30)*((1 - gamma)*std::cos(3*t + rx*i*18.0f*cimg::PI/180) + |
| gamma*std::cos(3*t + nrx*i*18.0f*cimg::PI/180))), |
| my = (float)(img.height()/2 + (img.height()/2 - 30)*((1 - gamma)*std::sin(4*t + ry*i*18.0f*cimg::PI/180) + |
| gamma*std::sin(4*t + nry*i*18.0f*cimg::PI/180))), |
| mz = (float)(1.3f + 1.2f*((1 - gamma)*std::sin(2*t + (rx + ry)*i*20*cimg::PI/180) + |
| gamma*std::sin(2*t + (nrx + nry)*i*20*cimg::PI/180))); |
| const int j = i%5; |
| img.draw_circle((int)mx,(int)my,(int)(10*mz),j!=0?(j!=1?(j!=2?(j!=3?green:red):yellow):purple):blue,0.2f). |
| draw_circle((int)(mx + 4*mz),(int)(my - 4),(int)(3*mz),white,0.1f). |
| draw_circle((int)mx,(int)my,(int)(10*mz),black,0.2f,~0U); |
| } |
| const unsigned char *ptrs = fore.data(); |
| cimg_for(img,ptrd,unsigned char) { const unsigned char val = *(ptrs++); if (val) *ptrd = val; } |
| const int y = (disp.mouse_y() - y0)/18, _y = 18*y + y0 + 9; |
| if (y>=0 && y<27) { |
| for (int yy = _y - 9; yy<=_y + 8; ++yy) |
| img.draw_rectangle(0,yy,0,1,img.width() - 1,yy,0,1,(unsigned char)(130 - 14*cimg::abs(yy - _y))); |
| img.draw_triangle(2,_y - 6,2,_y + 6,8,_y,yellow). |
| draw_triangle(img.width() - 2,_y - 6,img.width() - 2,_y + 6,img.width() - 8,_y,yellow); |
| } |
| gamma+=vgamma; |
| if (gamma>1) { |
| gamma = vgamma = 0; |
| rx = nrx; |
| ry = nry; |
| nrx=(float)(2*cimg::rand(-1,1)); nry=(float)(2*cimg::rand(-1,1)); |
| } |
| t+=0.006f; T+=0.005f; if (T>1) { T-=(float)(1 + cimg::rand(-1,1)); vgamma = 0.03f; } |
| if (disp.button()) { demo_number = 1 + (disp.mouse_y() - y0)/18; disp.set_button(); } |
| disp.resize(disp,false).display(img).wait(25); |
| } |
| start_item(demo_number); |
| } |
| } |
| |
| // Exit demo |
| //----------- |
| std::exit(0); |
| return 0; |
| } |