计算机图形学二维图形变换

#include<stdlib.h> #include<graphics.h> #include<conio.h> #include<math.h> #define XC 300 #define YC 300 void main(){ int gdriver,gmode; int i; int x,y; int coor1[10]={0,0,5,15,10,30,15,15,20,0}; int gxl[10]={0,0,5,15,10,30,15,15,20,0}; int gxl1[10]={0,0,5,15,10,30,15,15,20,0}; int gxl2[10]={0,0,5,15,10,30,15,15,20,0}; int gxl3[10]={0,0,5,15,10,30,15,15,20,0}; int gxl4[10]={0,0,5,15,10,30,15,15,20,0}; detectgraph(&gdriver,&gmode); initgraph(&gdriver,&gmode,"C:\\TURBOC2"); setcolor(WHITE); line(100,YC,500,YC); line(XC,100,XC,450); line(500,300,495,295); line(500,300,495,305); line(300,100,295,105); line(300,100,305,105); line(XC+coor1[0],YC-coor1[1],XC+coor1[2],YC-coor1[3]); line(XC+coor1[2],YC-coor1[3],XC+coor1[4],YC-coor1[5]); line(XC+coor1[4],YC-coor1[5],XC+coor1[6],YC-coor1[7]); line(XC+coor1[6],YC-coor1[7],XC+coor1[8],YC-coor1[9]); line(XC+coor1[2],YC-coor1[3],XC+coor1[6],YC-coor1[7]); for(i=0;i<5;i++) { gxl[2*i]=coor1[2*i]+52; gxl[2*i+1]=coor1[2*i+1]+69; } line(XC+gxl[0],YC-gxl[1],XC+gxl[2],YC-gxl[3]); line(XC+gxl[2],YC-gxl[3],XC+gxl[4],YC-gxl[5]); line(XC+gxl[4],YC-gxl[5],XC+gxl[6],YC-gxl[7]); line(XC+gxl[6],YC-gxl[7],XC+gxl[8],YC-gxl[9]); line(XC+gxl[2],YC-gxl[3],XC+gxl[6],YC-gxl[7]); getch(); clearviewport(); line(100,YC,500,YC); line(XC,100,XC,450); line(500,300,495,295); line(500,300,495,305); line(300,100,295,105); line(300,100,305,105); line(XC+coor1[0],YC-coor1[1],XC+coor1[2],YC-coor1[3]); line(XC+coor1[2],YC-coor1[3],XC+coor1[4],YC-coor1[5]); line(XC+coor1[4],YC-coor1[5],XC+coor1[6],YC-coor1[7]); line(XC+coor1[6],YC-coor1[7],XC+coor1[8],YC-coor1[9]); line(XC+coor1[2],YC-coor1[3],XC+coor1[6],YC-coor1[7]); for(i=0;i<5;i++) { x=gxl4[2*i]; y=gxl4[2*i+1]; gxl4[2*i]=x*cos(3.14159*75/180.) - y*sin(3.14159*75/180.); gxl4[2*i+1]=x*sin(3.14159*75/180.) +y*cos(3.14159*75/180.); } line(XC+gxl4[0],YC-gxl4[1],XC+gxl4[2],YC-gxl4[3]); line(XC+gxl4[2],YC-gxl4[3],XC+gxl4[4],YC-gxl4[5]); line(XC+gxl4[4],YC-gxl4[5],XC+gxl4[6],YC-gxl4[7]); line(XC+gxl4[6],YC-gxl4[7],XC+gxl4[8],YC-gxl4[9]); line(XC+gxl4[2],YC-gxl4[3],XC+gxl4[6],YC-gxl4[7]); getch(); clearviewport(); line(100,YC,500,YC); line(XC,100,XC,450); line(500,300,495,295); line(500,300,495,305); line(300,100,295,105); line(300,100,305,105); line(XC+coor1[0],YC-coor1[1],XC+coor1[2],YC-coor1[3]); line(XC+coor1[2],YC-coor1[3],XC+coor1[4],YC-coor1[5]); line(XC+coor1[4],YC-coor1[5],XC+coor1[6],YC-coor1[7]); line(XC+coor1[6],YC-coor1[7],XC+coor1[8],YC-coor1[9]); line(XC+coor1[2],YC-coor1[3],XC+coor1[6],YC-coor1[7]); for (i=0;i<5;i++) { gxl1[2*i]=2*gxl1[2*i] ; gxl1[2*i+1]=2*gxl1[2*i+1] ; } line(XC+gxl1[0],YC-gxl1[1],XC+gxl1[2],YC-gxl1[3]); line(XC+gxl1[2],YC-gxl1[3],XC+gxl1[4],YC-gxl1[5]); line(XC+gxl1[4],YC-gxl1[5],XC+gxl1[6],YC-gxl1[7]); line(XC+gxl1[6],YC-gxl1[7],XC+gxl1[8],YC-gxl1[9]); line(XC+gxl1[2],YC-gxl1[3],XC+gxl1[6],YC-gxl1[7]); getch(); clearviewport(); line(100,YC,500,YC); line(XC,100,XC,450); line(500,300,495,295); line(500,300,495,305); line(300,100,295,105); line(300,100,305,105); line(XC+coor1[0],YC-coor1[1],XC+coor1[2],YC-coor1[3]); line(XC+coor1[2],YC-coor1[3],XC+coor1[4],YC-coor1[5]); line(XC+coor1[4],YC-coor1[5],XC+coor1[6],YC-coor1[7]); line(XC+coor1[6],YC-coor1[7],XC+coor1[8],YC-coor1[9]); line(XC+coor1[2],YC-coor1[3],XC+coor1[6],YC-coor1[7]); for(i=0;i<5;i++) { x=gxl2[2*i]; y=gxl2[2*i+1]; gxl2[2*i]=x+y*tan((15)*3.14/180.); gxl2[2*i+1]=y; } line(XC+gxl2[0],YC-gxl2[1],XC+gxl2[2],YC-gxl2[3]); line(XC+gxl2[2],YC-gxl2[3],XC+gxl2[4],YC-gxl2[5]); line(XC+gxl2[4],YC-gxl2[5],XC+gxl2[6],YC-gxl2[7]); line(XC+gxl2[6],YC-gxl2[7],XC+gxl2[8],YC-gxl2[9]); line(XC+gxl2[2],YC-gxl2[3],XC+gxl2[6],YC-gxl2[7]); getch(); clearviewport(); line(100,YC,500,YC); line(XC,100,XC,450); line(500,300,495,295); line(500,300,495,305); line(300,100,295,105); line(300,100,305,105); line(XC+coor1[0],YC-coor1[1],XC+coor1[2],YC-coor1[3]); line(XC+coor1[2],YC-coor1[3],XC+coor1[4],YC-coor1[5]); line(XC+coor1[4],YC-coor1[5],XC+coor1[6],YC-coor1[7]); line(XC+coor1[6],YC-coor1[7],XC+coor1[8],YC-coor1[9]); line(XC+coor1[2],YC-coor1[3],XC+coor1[6],YC-coor1[7]); for(i=0;i<5;i++) { x=gxl3[2*i]; y=gxl3[2*i+1]; gxl3[2*i]=-y; gxl3[2*i+1]=-x; } line(XC+gxl3[0],YC-gxl3[1],XC+gxl3[2],YC-gxl3[3]); line(XC+gxl3[2],YC-gxl3[3],XC+gxl3[4],YC-gxl3[5]); line(XC+gxl3[4],YC-gxl3[5],XC+gxl3[6],YC-gxl3[7]); line(XC+gxl3[6],YC-gxl3[7],XC+gxl3[8],YC-gxl3[9]); line(XC+gxl3[2],YC-gxl3[3],XC+gxl3[6],YC-gxl3[7]); getch(); }