附 录
附用C语言实现计算机绘图源代码：
#include
#define W 4471 /* scan code */ #define S 8051 #define A 7777 #define D 8292 #define ESC 283 #define ENTER 7181
#define F1 15104 /* pagedown&up is uesd to change color */ #define F2 15360
#define SPACE 14624 #define C 11875 #define V 12150 #define B 12386 #define N 12654 #define Q 4209 #define X 11640 #define Z 11386
void penmove(int xx,int yy,int lastxx,int lastyy,void (*buf)) {
putimage(xx,yy,buf,XOR_PUT);
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putimage(lastxx,lastyy,buf,XOR_PUT); }
void action(int xx,int yy, int lastxx,int lastyy,void(*buf),int xx1,int yy1,int drawmode)
{
if(drawmode==2) {setwritemode(1); setlinestyle(DOTTED_LINE,0,1); line(xx1,yy1,xx,yy); line(xx1,yy1,lastxx,lastyy); }
else{penmove(xx,yy,lastxx,lastyy,buf);} }
int main(void) {
int gdriver=DETECT,mode,errorcode; int i,ucolor;
int ifexit,key,drawmode; void *buf[15];
int x,y,lastx,lasty,x1,y1; int r;
initgraph(&gdriver,&mode,\ errorcode=graphresult(); if(errorcode!=grOk)
{
printf(\ printf(\ getch(); exit(1);
}
cleardevice(); setfillstyle(1,2); setcolor(WHITE); settextstyle(1,0,1);
outtextxy(230,450, \ Graduation design of SU HUA XIAN \
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getch();
textcolor(BLUE); setbkcolor(BLUE); setcolor(GREEN);
rectangle(0+5,0+5,getmaxx()-5,getmaxy()-5); line(5,450,635,450); setfillstyle(1,1); x=getmaxx()/2; y=getmaxy()/2; lastx=x; lasty=y;
for(i=0;i<=15;i++) {
putpixel(x,y,i);
buf[i]=malloc(imagesize(x,y,x+1,y+1)); getimage(x,y,x+1,y+1,buf[i]); }
putpixel(x,y,RED); setcolor(0);
drawmode=0; /* 0 is putpixel */ ucolor=0; ifexit=0;
while(!kbhit()&&(!ifexit)) {
key=bioskey(0);
switch(key) {
case W : if(y>5) { y=y-1; action(x,y,lastx,lasty,buf[3],x1,y1,drawmode); lastx=x; lasty=y; }
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break; case S : if(y<449) { y=y+1; action(x,y,lastx,lasty,buf[3],x1,y1,drawmode); lastx=x; lasty=y; } break;
case A : if(x>5) { x=x-1; action(x,y,lastx,lasty,buf[3],x1,y1,drawmode); lastx=x; lasty=y; } break;
case D : if(x<(getmaxx()-5)) { x=x+1; action(x,y,lastx,lasty,buf[3],x1,y1,drawmode); lastx=x; lasty=y; } break;
case ESC :ifexit=1; clrscr();
printf( \ This is my graduation design using simple painting procedure\\n of the C language desige, \\n Please press any key to return to the window\
break;
case ENTER : switch (drawmode) {
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case 0: putimage(x,y,buf[3],XOR_PUT); putpixel(x,y,ucolor); putimage(x,y,buf[3],XOR_PUT); break; case 1: putimage(x,y,buf[3],XOR_PUT); x1=x; y1=y; drawmode=2; break; case 2: setwritemode(1); setlinestyle(DOTTED_LINE,0,1); line(x1,y1,x,y); setwritemode(0); setlinestyle(SOLID_LINE,0,1); line(x1,y1,x,y); drawmode=0; putimage(x,y,buf[3],XOR_PUT); break;
} /*switch*/ break;
case F1 : if(drawmode!=2) { if(ucolor>0)ucolor--; else ucolor=15; setfillstyle(1,ucolor); bar(10,455,30,470); setcolor(ucolor); } break;
case F2 : if(drawmode!=2) { if(ucolor<15)ucolor++; else ucolor=0; setfillstyle(1,ucolor); bar(10,455,30,470); setcolor(ucolor); } break;
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