http://www.cnblogs.com/sytu/p/4192652.html
在秒针模型的基础上添加了分针和时针，并且添加了暂停控件和设置时间的功能。
1 #include"cv.h" 2 #include"highgui.h" 3 int run = 1; 4 void Stop_Run_onclick(int event,int x,int y,int flags,void* param) 5 { 6 switch (event) 7 { 8 case CV_EVENT_LBUTTONDOWN:{ 9 if (x<330 && x>170 && y<110 && y>80) 10 { 11 run = !run; 12 } 13 } 14 default: 15 break; 16 } 17 } 18 void Drwan_button(IplImage* plane) 19 { 20 //画按钮 21 cvRectangle(plane, cvPoint(170, 80), cvPoint(330, 110), cvScalar(100, 100, 100), 2); 22 cvSetImageROI(plane, cvRect(170, 80, 160, 30)); 23 cvZero(plane); 24 cvFloodFill(plane,cvPoint(0,0),cvScalarAll(100),cvScalarAll(0)); 25 cvResetImageROI(plane); 26 if (run) 27 cvPutText(plane, "StopTime", cvPoint(173, 105), &cvFont(2, 2), cvScalar(100, 0, 100)); 28 else 29 { 30 cvPutText(plane, "RunTime", cvPoint(173, 105), &cvFont(2, 2), cvScalar(100, 0, 100)); 31 } 32 } 33 double PIZHI(int count) 34 { 35 return 2*(1.0*count / 60.0 * 3.1415926); 36 } 37 int main() 38 { 39 IplImage* Plane = cvCreateImage(cvSize(500,500),8,3); 40 cvAddS(Plane,cvScalar(100,0,200),Plane); 41 cvCircle(Plane,cvPoint(250,250),100,cvScalar(0,180,0),2); 42 cvPutText(Plane,"12",cvPoint(236,145),&cvFont(1,1),cvScalar(50,150,10)); 43 cvPutText(Plane, "3", cvPoint(355, 255), &cvFont(1, 1), cvScalar(50, 150, 10)); 44 cvPutText(Plane, "4", cvPoint(340, 305), &cvFont(1, 1), cvScalar(50, 150, 10)); 45 cvPutText(Plane, "5", cvPoint(312, 345), &cvFont(1, 1), cvScalar(50, 150, 10)); 46 cvPutText(Plane, "6", cvPoint(250, 365), &cvFont(1, 1), cvScalar(50, 150, 10)); 47 cvPutText(Plane, "7", cvPoint(188, 347), &cvFont(1, 1), cvScalar(50, 150, 10)); 48 cvPutText(Plane, "8", cvPoint(153, 310), &cvFont(1, 1), cvScalar(50, 150, 10)); 49 50 cvPutText(Plane, "9", cvPoint(135, 255), &cvFont(1, 1), cvScalar(50, 150, 10)); 51 cvPutText(Plane, "10", cvPoint(140, 200), &cvFont(1, 1), cvScalar(50, 150, 10)); 52 cvPutText(Plane, "11", cvPoint(175, 165), &cvFont(1, 1), cvScalar(50, 150, 10)); 53 cvPutText(Plane, "1", cvPoint(300, 160), &cvFont(1, 1), cvScalar(50, 150, 10)); 54 cvPutText(Plane, "2", cvPoint(340, 195), &cvFont(1, 1), cvScalar(50, 150, 10)); 55 cvCircle(Plane,cvPoint(250,250),3,cvScalarAll(50),4); 56 cvNamedWindow("Clock"); 57 cvSetMouseCallback("Clock",Stop_Run_onclick,0); 58 Drwan_button(Plane); 59 cvShowImage("Clock",Plane); 60 IplImage* img = cvCreateImage(cvGetSize(Plane),8,3); 61 double dangle = 0.1036; 62 int r = 100; 63 int x = 250, y = 250;//圆心 64 int count_s = 0; 65 int count_m = 0; 66 int x1, x2; 67 //for seconds 68 double angle = 0; 69 int dx = 0; 70 int dy = 0; 71 //for minutes 72 double angle_m = 0; 73 int mx = 0; 74 int my = 0; 75 //for hours 76 double angle_h = 0; 77 int hx=0, hy = 0; 78 int count_h = 0; 79 //设置时钟输入调节 80 //angle; 81 //angle_m; 82 //angle_h; 83 //count_m; 84 //count_s; 85 printf(" 选项 从零点开始走针（1） 从历史记录的时间走针（2） 输入选项:"); 86 int judge; 87 scanf("%d", &judge); 88 if (judge == 2){ 89 FILE *file = fopen("TimeRecord.dat", "r"); 90 fscanf(file, "%lf %lf %lf %d %d %d", &angle_h, &angle_m, &angle, &count_h, &count_m, &count_s); 91 fclose(file); 92 } 93 system("cls"); 94 printf("按下ESC键可以退出！ "); 95 printf("Enter键或者屏幕按键可以暂停钟表转动 "); 96 printf("按下空格键可以设置时间：（输入格式为00：00：00） "); 97 98 while (true) 99 { 100 if (run){ 101 cvCopy(Plane, img); 102 dy = r * cos(angle); 103 dx = r * sin(angle); 104 //for seconds 105 my = r * cos(angle_m); 106 mx = r * sin(angle_m); 107 //for hours 108 hx = r * sin(angle_h); 109 hy = r * cos(angle_h); 110 count_s++; 111 angle=PIZHI(count_s); 112 cvLine(img, cvPoint(x, y), cvPoint(x + hx / 2, x - hy / 2), cvScalar(100, 0, 250), 3); 113 cvLine(img, cvPoint(x, y), cvPoint(x + mx / 1.5, y - my / 1.5), cvScalar(10, 90, 50), 2); 114 cvLine(img, cvPoint(x, y), cvPoint(x + dx, y - dy), cvScalar(100, 90, 0), 1); 115 116 if (count_s == 60||judge==10) 117 { 118 if (judge!=10) 119 count_s = 0; 120 count_m++; 121 angle = 0; 122 angle_m=PIZHI(count_m); 123 if (count_m % 12 == 0||judge==10){ 124 count_h++; 125 angle_h = PIZHI(count_h); 126 if (count_h == 60)count_h = 0; 127 } 128 if (count_m == 60)count_m = 0; 129 judge = 0; 130 } 131 } 132 Drwan_button(img); 133 cvShowImage("Clock", img); 134 135 char ch = cvWaitKey(1000); 136 if (ch == 27) 137 { 138 FILE* write = fopen("TimeRecord.dat","w"); 139 fprintf(write, "%lf %lf %lf %d %d %d", angle_h, angle_m, angle, count_h, count_m, count_s); 140 fclose(write); 141 break; 142 } 143 else if (ch==13) 144 { 145 run = !run; 146 } 147 else if (ch == 32) 148 { 149 scanf("%d:%d:%d",&count_h,&count_m,&count_s); 150 count_h=count_h * 5 + 1.0*count_m / 12.0; 151 judge = 10; 152 } 153 } 154 cvWaitKey(0); 155 return 0; 156 }
做着挺好玩的，就当练练手吧。