Codepoc.io is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
# include <iostream.h>
# include <conio.h>
# include <graphics.h>
# include <math.h>
char IncFlag;
int PolygonPoints[4][2] =
{{10,10},{10,100},{100,100},{100,10}};
float Sx=0.5;
float Sy=2.0;
void PolyLine()
{
int iCnt;
cleardevice();
line(0,240,640,240);
line(320,0,320,480);
for (iCnt=0; iCnt<4; iCnt++)
{
line(320+PolygonPoints[iCnt][0],240-PolygonPoints[iCnt][1],
320+PolygonPoints[(iCnt+1)%4][0],240-PolygonPoints[(iCnt+1)%4][1]);
}
}
void Scale()
{
int iCnt;
int Tx,Ty;
cout<<endl;
for (iCnt=0; iCnt<4; iCnt++)
{
PolygonPoints[iCnt][0] *= Sx;
PolygonPoints[iCnt][1] *= Sy;
}
}
void main()
{
int gDriver = DETECT, gMode;
int iCnt;
initgraph(&gDriver, &gMode, \"C:\\\\TC\\\\BGI\");
PolyLine();
getch();
Scale();
PolyLine();
getch();
}