部分源程序如下:
- #include <graphics.h>
- #include <time.h>
- #include <math.h>
- void paintstar(double x, double y, double r, double a)
- {
- int pt[10];
- for (int n = 0; n < 5; ++n)
- {
- pt[n*2] = (int)( -cos( PI * 4 / 5 * n + a ) * r + x );
- pt[n*2+1] = (int)( sin( PI * 4 / 5 * n + a) * r + y );
- }
- fillpoly(5, pt);
- }
- int main()
- {
- initgraph( 640, 480 );
- setcolor( RGB(0xff, 0xff, 0xff) );
- setfillcolor( RGB(0, 0, 0xff) );
- setrendermode(RENDER_MANUAL);
- double r = 0;
- for ( ; is_run(); delay_fps(60) )
- {
- r += 0.02;
- if (r > PI * 2) r -= PI * 2;
- cleardevice();
- paintstar(300, 200, 100, r);
- }
- return 0;
- }
所有资料51hei提供下载:
示例程序.7z
(1.51 MB, 下载次数: 69)
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