C语言大作业图形变换,计算机图形学几何图形变换算法（缩放、旋转和平移） C语言编写...

旧城等待， 2023-01-22 05:57 4阅读 0赞

\#include"graphics.h"

\#include "stdafx.h"

\#include "math.h"

\#include "iostream.h"

double xmax=639.0,ymax=399.0;

double f\[3\]\[3\],xx,yy;

int scx(double xj)\{

int x;

x=(int)(xj+xmax/2);

return(x);

int scy(double yi)\{

int y;

y=int(ymax-(int)(yi+(ymax/2)));

return(y);

void transfer(double dx,double dy)\{

f\[0\]\[0\]=1.0;f\[0\]\[1\]=0.0;f\[0\]\[2\]=0.0;

f\[1\]\[0\]=0.0;f\[1\]\[1\]=1.0;f\[1\]\[2\]=0.0;

f\[2\]\[0\]=dx;f\[2\]\[1\]=dy;f\[2\]\[2\]=1.0;

void rotate(double theta)\{

double th;

th=theta/180\*3.1415927;

f\[0\]\[0\]=cos(th);f\[0\]\[1\]=sin(th);f\[0\]\[2\]=0.0;

f\[1\]\[0\]=-sin(th);f\[1\]\[1\]=cos(th);

f\[2\]\[0\]=0.0;f\[2\]\[1\]=0.0;f\[2\]\[2\]=1.0;

void scale(double ss)\{

f\[0\]\[0\]=ss;f\[0\]\[1\]=0.0;f\[0\]\[2\]=0.0;

f\[1\]\[0\]=0.0;f\[1\]\[1\]=ss;f\[1\]\[2\]=0.0;

f\[2\]\[0\]=0.0;f\[2\]\[1\]=0.0;f\[2\]\[2\]=1.0;

void axis()\{

line(scx(0),scy(-ymax/2),scx(0),scy(ymax/2));

line(scx(-xmax/2),scy(0.0),scx(xmax/2),scy(0.0));

double affinex(double x,double y,double d)\{

xx=x\*f\[0\]\[0\]+y\*f\[1\]\[0\]+d\*f\[2\]\[0\];

return(xx);

double affiney(double x,double y,double d)\{

yy=x\*f\[0\]\[1\]+y\*f\[1\]\[1\]+d\*f\[2\]\[1\];

return(yy);

int main()\{    int driver=DETECT,mode,i,r=60;     static double x1\[\]=\{0.0,10.0,80.0,100.0,0.0\};     static double y1\[\]=\{0.0,50.0,50.0,0.0,0.0\};     static double x2\[5\],y2\[5\],x3\[5\],y3\[5\],x4\[5\],y4\[5\];     initgraph(&driver,&mode,"");     axis();     for(i=0;i<=3;i++)\{   line(scx(x1\[i\]),scy(y1\[i\]),scx(x1\[i+1\]),scy(y1\[i+1\]));  \}     scale(2.0);     for(i=0;i<=4;i++)\{      x2\[i\]=affinex(x1\[i\],y1\[i\],1.0);         y2\[i\]=affiney(x1\[i\],y1\[i\],1.0);        Sleep(100);     \}     for(i=0;i<=3;i++)\{   line(scx(x2\[i\]),scy(y2\[i\]),scx(x2\[i+1\]),scy(y2\[i+1\]));        \}     rotate(6.0);     for(i=0;i<=4;i++)\{      x3\[i\]=affinex(x2\[i\],y2\[i\],1.0);         y3\[i\]=affiney(x2\[i\],y2\[i\],1.0);         Sleep(100);     \}     for(i=0;i<=3;i++)\{   line(scx(x3\[i\]),scy(y3\[i\]),scx(x3\[i+1\]),scy(y3\[i+1\]));     \}     transfer(50.0,-150.0);     for(i=0;i<=4;i++)\{   x4\[i\]=affinex(x3\[i\],y3\[i\],1.0);         y4\[i\]=affiney(x3\[i\],y3\[i\],1.0);         Sleep(100);     \}     for(i=0;i<=3;i++)\{   line(scx(x4\[i\]),scy(y4\[i\]),scx(x4\[i+1\]),scy(y4\[i+1\]));     \}     getchar();     closegraph();    return 0;   \}