c图形学 图形模式下简易画图程序支持鼠标操作

/* * 文件名称：HuaTuBan.c * 当前版本：1.2 * （修正绘制圆形sqrt domain error，半径过大边界问题； * 修正Bezier曲线边界问题； * 改进保存 加载过程不能实时退出问题。 * ） * 作 者：刘昆 （计算机0781） * 完成日期：2010年10月2日 * * 取代版本：1.1 * 作 者：刘昆 （计算机0781） * 完成日期：2010年9月29日 */ #include<stdio.h> #include<graphics.h> #include<dos.h> #include<math.h> #define NO_PRESS 0 #define LEFT_PRESS 1 #define RIGHT_PRESS 2 #define pi 3.14159 #define ESC 0x11b #define SPACE 0x3920 int pointX[20]; int pointY[20]; char zhi16K[]={ /* 以下是 '直' 的 16点阵楷体_GB2312 字模，32 byte */ 0x01,0x00,0x01,0x00,0x01,0xF0,0x1E,0x00, 0x02,0x00,0x07,0xC0,0x08,0x40,0x0F,0x40, 0x08,0x40,0x0F,0x40,0x08,0x40,0x0F,0x40, 0x08,0x40,0x0F,0xFC,0x70,0x00,0x00,0x00, }; char xian16K[]={ /* 以下是 '线' 的 16点阵楷体_GB2312 字模，32 byte */ 0x00,0x80,0x00,0x90,0x08,0x88,0x10,0x80, 0x24,0xF0,0x45,0x80,0x78,0xB0,0x11,0xC0, 0x2C,0x88,0x70,0x50,0x04,0x60,0x18,0xA4, 0x63,0x14,0x00,0x0C,0x00,0x04,0x00,0x00, }; char ju16K[]={ /* 以下是 '矩' 的 16点阵楷体_GB2312 字模，32 byte */ 0x00,0x00,0x08,0x00,0x08,0x78,0x10,0x80, 0x1E,0x80,0x28,0xF8,0x48,0x88,0x0E,0x88, 0xF8,0xF0,0x08,0x80,0x14,0x80,0x12,0x9E, 0x20,0xE0,0x40,0x00,0x00,0x00,0x00,0x00, }; char xing16K[]={ /* 以下是 '形' 的 16点阵楷体_GB2312 字模，32 byte */ 0x00,0x00,0x07,0x88,0x3A,0x08,0x12,0x10, 0x12,0x20,0x17,0x48,0xFA,0x10,0x12,0x20, 0x12,0xC8,0x12,0x08,0x22,0x10,0x42,0x20, 0x00,0x40,0x00,0x80,0x03,0x00,0x00,0x00, }; char yuan16K[]={ /* 以下是 '圆' 的 16点阵楷体_GB2312 字模，32 byte */ 0x00,0xF8,0x3F,0x08,0x23,0x88,0x24,0x88, 0x27,0x08,0x21,0xC8,0x2E,0x48,0x29,0x48, 0x29,0x48,0x22,0x88,0x24,0x48,0x28,0x08, 0x3F,0xE8,0x00,0x10,0x00,0x00,0x00,0x00, }; char qing16K[]={ /* 以下是 '清' 的 16点阵楷体_GB2312 字模，32 byte */ 0x00,0x80,0x00,0xE0,0x33,0x80,0x10,0xE0, 0x03,0x80,0x40,0xFC,0x2F,0x00,0x01,0xE0, 0x12,0x20,0x13,0xA0,0x22,0x20,0x63,0xA0, 0x42,0x20,0x02,0x60,0x00,0x20,0x00,0x00, }; char ping16K[]={ /* 以下是 '屏' 的 16点阵楷体_GB2312 字模，32 byte */ 0x00,0xF0,0x0F,0x30,0x08,0x60,0x0F,0x80, 0x0A,0x20,0x09,0x40,0x08,0xF8,0x17,0x20, 0x11,0x3E,0x2F,0xE0,0x21,0x20,0x42,0x20, 0x82,0x20,0x04,0x20,0x08,0x20,0x00,0x00, }; char bao16K[]={ /* 以下是 '保' 的 16点阵楷体_GB2312 字模，32 byte */ 0x00,0x00,0x09,0xF0,0x0A,0x10,0x12,0x10, 0x13,0xE0,0x30,0x80,0x50,0xFC,0x9F,0x80, 0x11,0xC0,0x12,0xA0,0x14,0x98,0x18,0x8E, 0x10,0x80,0x10,0x80,0x00,0x00,0x00,0x00, }; char cun16K[]={ /* 以下是 '存' 的 16点阵楷体_GB2312 字模，32 byte */ 0x01,0x00,0x01,0x00,0x01,0xF0,0x1E,0x00, 0x02,0x70,0x05,0x90,0x08,0x20,0x08,0x40, 0x18,0x7E,0x2B,0xA0,0xC8,0x20,0x08,0x20, 0x08,0x20,0x08,0xA0,0x00,0x40,0x00,0x00, }; char jia16K[]={ /* 以下是 '加' 的 16点阵楷体_GB2312 字模，32 byte */ 0x00,0x00,0x08,0x00,0x08,0x00,0x08,0x00, 0x0F,0x00,0x79,0x3C,0x09,0x44,0x11,0x44, 0x11,0x44,0x22,0x44,0x22,0x78,0x4A,0x00, 0x84,0x00,0x00,0x00,0x00,0x00,0x00,0x00, }; char zai16K[]={ /* 以下是 '载' 的 16点阵楷体_GB2312 字模，32 byte */ 0x00,0x80,0x08,0xA0,0x08,0x90,0x0E,0x80, 0x38,0xF0,0x0F,0x80,0x78,0x50,0x0E,0x50, 0x34,0x20,0x1E,0x20,0x34,0x50,0x0E,0x92, 0x75,0x0A,0x04,0x06,0x04,0x02,0x00,0x00, }; char bang16K[]={ /* 以下是 '帮' 的 16点阵楷体_GB2312 字模，32 byte */ 0x04,0x00,0x07,0x38,0x1C,0x48,0x06,0x50, 0x1C,0x50,0x07,0x48,0x78,0x58,0x11,0x40, 0x21,0xF0,0x4F,0x10,0x09,0x10,0x09,0x50, 0x09,0x20,0x01,0x00,0x01,0x00,0x00,0x00, }; char zhu16K[]={ /* 以下是 '助' 的 16点阵楷体_GB2312 字模，32 byte */ 0x00,0x00,0x00,0x20,0x0C,0x20,0x34,0x20, 0x24,0x20,0x34,0x38,0x25,0xC8,0x34,0x48, 0x24,0x48,0x26,0x88,0x38,0x88,0xE1,0x28, 0x02,0x10,0x04,0x00,0x00,0x00,0x00,0x00, }; /* 功能：显示汉字 x+j*8+k,y+i 00000001 0000000 00000001 0000000 00100001 0000100 */ void showChinese(char *zimo,int x,int y,int maxsize,int color) { int i; int j; int k; int n; n = (maxsize-1)/8 + 1; for (i=0; i<maxsize; i++) { for (j=0; j<n; j++) { for (k=0; k<8; k++) /*字模转换成二进制8位*/ { if(zimo[i*n+j] & (0x80>>k)) /*探测每位是否为1,0x80为10000000*/ { putpixel(x+j*8+k,y+i,color); } } } } } /*功能：用于以指定的填充区域*/ void fillCol(int startx,int starty,int endx,int endy,int color) { int i; int j; for (i=startx; i<=endx; i++) { for (j=starty; j<=starty; j++) { putpixel(i,j,color); } } } /*功能：帮助信息，介绍怎么操作*/ void showHelp() { setfillstyle(0,0); bar(100,40,630,445); outtextxy(145,150,"Press left button to start until the action is finished"); outtextxy(145,205,"Press left button to start, and right button to end."); outtextxy(145,245,"Press right button to end the drawing works."); outtextxy(145,260,"Press any key to continue......"); getch(); setfillstyle(0,0); bar(100,40,630,445); } /*功能：保存画布中的图形*/ void save() { int i,j; FILE *fp; char fileName[20]; int key; int xun=1; int flag=0; fillCol(0,447,630,477,2); gotoxy(1,25); printf("\n\n\n\n press esc to exit,Input the filename press space:"); while (xun) { if (bioskey(1)) { key=bioskey(0); } else { key=0; } switch(key) { case ESC: flag=1; xun=0; break; case SPACE: gets(fileName); xun=0; break; } } if (flag==1) { goto end; } fillCol(0,447,630,477,2); /*以读写的方式打开文件*/ if ((fp=fopen(fileName,"wb+")) == NULL) { outtextxy(260,455,"Failed to open file!"); goto end; } outtextxy(500,455,"saving..."); /*100,40,630,445保存像素到文件*/ for(i=100; i<630; i++) { for(j=40; j<=445; j++) { fputc(getpixel(i,j),fp); } } end:fclose(fp); setfillstyle(1,2); bar(0,445,630,477); outtextxy(260,455,"save over!"); delay(10000); setfillstyle(1,2); bar(0,445,630,477); } /*功能：打开已有的图形*/ void load() { int i; int j; FILE *fp; int key; int xun=1; int flag=0; char fileName[20]; fillCol(0,447,630,477,2); gotoxy(1,25); printf("\n\n\n\n press esc to exit,Input the filename press space:"); while (xun) { if (bioskey(1)) { key=bioskey(0); } else { key=0; } switch(key) { case ESC: flag=1; xun=0; break; case SPACE: gets(fileName); xun=0; break; } } if (flag==1) { goto end; } fillCol(0,447,630,477,2); if ((fp=fopen(fileName,"rb+"))== NULL) { outtextxy(260,455,"Failed to open file!"); goto end; } for(i=100; i<630; i++) { for(j=40; j<=445; j++) { putpixel(i,j,fgetc(fp)); } } end:fclose(fp); delay(10000); setfillstyle(1,2); bar(0,445,630,477); } /************************************/ /* 功能：获取鼠标状态、鼠标位置（水平、垂直）以及按键情况 */ i