# include  "CImg_demo.h"
// Include CImg library header.
# include  "CImg.h"
using  namespace cimg_library;
#undef min
#undef max
void main()
{
     cimg : :info();
      //各类RGB定值
      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 : :crand()),
         nry  = ( float)( 2 *cimg : :crand());
      int y0  =  2 * 13;
      //图像显示
     CImg < unsigned  char > back( 1, 2, 1, 3, 10), fore, text, img; //back fore text img都是界面背景
     back.fillC( 0, 1, 0, 10, 10, 235).resize( 640, 480, 1, 3, 3).get_shared_channel( 2).noise( 10, 1).draw_plasma(); //绿宝石界面
      fore.assign(back.width(), 50, 1, 1, 0).draw_text( 20,y0 - 5, "** CImg %u.%u.%u Samples **",grey, 0, 1, 24,
     cimg_version / 100,(cimg_version / 10) % 10,cimg_version % 10);
     (fore +=fore.get_dilate( 3).dilate( 3)).resize( - 100, - 100, 1, 3);
     cimg_forXY(fore,x,y)
      if (fore(x,y) == 127) fore(x,y, 0)  = fore(x,y, 1)  = fore(x,y, 2)  =  1;
      else  if (fore(x,y)) {
      const  float val  = cimg : :min( 255.0f, 7.0f *(y - 3));
     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);
     }
    
     fore.resize(back, 0).draw_image( 20,y0 + 2 * 13,text |=text.get_dilate( 3) >> 4);
      //创建显示的窗体
     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 += 2 * 13;  !disp.is_closed()  &&  !disp.is_keyQ()  &&  !disp.is_keyESC(); ) {
            while (  !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;
                     //具体画圆
                    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; 
}
                 //显示菜单条
                 int y  = disp.mouse_y();
                 if (y > =y0  && y <y0 + 27 * 13) {
                    y  = (y / 13) * 13 + 7;
                     for ( int yy  = y - 7; yy < =y + 6;  ++yy) img.draw_rectangle( 0,yy, 0, 1,img.width() - 1,yy, 0, 1,( unsigned  char)( 130 - 15 *cimg : :abs(yy -y)));
                    img.draw_triangle( 2,y - 4, 2,y + 4, 8,y,yellow).draw_triangle(img.width() - 2,y - 4,img.width() - 2,y + 4,img.width() - 8,y,yellow);
                }
                gamma +=vgamma; 
                 if (gamma > 1) 
                { 
                    gamma  = vgamma  =  0; 
                    rx  = nrx;
                    ry  = nry; 
                    nrx =( float)( 2 *cimg : :crand());
                    nry =( float)( 2 *cimg : :crand());
                }
                t += 0. 006f; T += 0. 005f;  if (T > 1) { T -=( float)( 1 +cimg : :crand()); vgamma  =  0. 03f; }
                disp.resize(disp, false).display(img).wait( 25);
           }
      }
    
     getchar();
}