计算机图形学 飘动的红旗.docx

#include #include #include #include #include #include #define UP 18432#define DOWN 20480#define ESC 283#define PI 3.1415926#define S 8051void xing(double ox,double oy,double r) double pointx5,pointy5,r1; double pointx15,pointy15; int i,j,k; r1=r*sin(18/180.0)*PI)/cos(36/180.0)*PI); for(i=0;i5;i+) pointxi=ox+r*sin(72/180.0)*PI*i); pointyi=oy-r*cos(72/180.0)*PI*i); for(i=0;i5;i+) pointx1i=ox+sin(72*i+36)/180.0)*PI)*r1; pointy1i=oy-cos(72*i+36)/180.0)*PI)*r1; setcolor(14); for(i=0;i5;i+) line(pointxi,pointyi,pointx1i,pointy1i); line(pointx1i,pointy1i,pointx(i+1)%5,pointy(i+1)%5); setfillstyle(1,14); floodfill(ox,oy,14);void qi1(double tx,double ty) double x; setcolor(4); moveto(tx,ty); for(x=0.0;xPI*5;x+=0.01) lineto(15*x+tx,15*sin(x)/2+ty); moveto(tx,ty+120); for(x=0.0;xPI*5;x+=0.01) lineto(15*x+tx,15*sin(x)/2+ty+120); line(tx,ty,tx,ty+120); line(15*PI*5+tx,15*sin(PI*5)/2+ty,15*PI*5+tx,15*sin(PI*5)/2+ty+120); setfillstyle(1,4); floodfill(tx+10,ty+10,4); setcolor(14); setlinestyle(0,0,3); line(tx,ty,tx,ty+300); xing(tx+40,ty+40.0,25); xing(tx+85.0,ty+20.0,8); xing(tx+90.0,ty+45.0,8); xing(tx+70.0,ty+70.0,8); xing(tx+30.0,ty+80.0,8);void qi2(double tx,double ty) double x; setcolor(4); moveto(tx,ty); for(x=0.0;xPI*5;x+=0.01) lineto(15*x+tx,15*cos(x)/2+ty); moveto(tx,ty+120); for(x=0.0;xPI*5;x+=0.01) lineto(15*x+tx,15*cos(x)/2+ty+120); line(tx,ty,tx,ty+120); line(15*PI*5+tx,15*cos(PI*5)/2+ty,15*PI*5+tx,15*cos(PI*5)/2+ty+120); setfillstyle(1,4); floodfill(tx+10,ty+10,4); setcolor(14); setlinestyle(0,0,3); line(tx,ty,tx,ty+300); xing(tx+40,ty+40.0,25); xing(tx+85.0,ty+20.0,8); xing(tx+90.0,ty+45.0,8); xing(tx+70.0,ty+70.0,8); xing(tx+30.0,ty+80.0,8);void welcome() int maxx,k; maxx=getmaxx(); setcolor(4); setlinestyle(0,1,3); outtextxy(300,100,Fluttering Red Flag); outtextxy(120,180,I LOVE CHINA!); qi1(50,30); settextstyle(1,0,4); setcolor(WHITE); outtextxy(100,250,Class: 计算机科学系 Name:tian); setcolor(WHITE); outtextxy(10,300,press be quikely,press be slowly); setcolor(RED); outtextxy(80,300, UP); outtextxy(390,300, DOWN); getch(); cleardevice();void main() int gdriver=VGA,gmode=VGAMED; int key,x0,y0,x=0,time,dtime=15000,sign; double y=0.0; initgraph(&gdriver,&gmode, ); setbkcolor(3); welcome(); cleardevice(); while(1) x0=random(500); /* 产生随机初始点*/ y0=random(100); time=random(80); if(time%4)sign=1; else sign=-1; for(x=x0;xx0+time;x=x+2*sign) if(xx0-time)break; while(kbhit() key=bioskey(0); switch(key) case UP: dtime=dtime/1.2;break; /* 加快移动速度*/ case DOWN: dtime=dtime*1.2;break; /* 减慢移动速度*/ case S: getch();break; /* 暂停一下*/ case ESC: goto end; /* 停止*/ y=y0-10+50*sin(x*5*PI/180.0); if(x-x0)%4=0)/*显示旗帜一*/ setvisualpage(0); delay(dtime); setactivepage(1); cleardevice(); setcolor(10); outtextxy(120,10,Made by auf 0503 NO.05); qi1(80+x,80+y); setcolor(4); outtextxy(140+x,220+y,I LOVE CHINA!); else /*显示旗帜二*/ setvisualpage(1); delay(dtime); setactivepage(0); clea