Turbo C Graphics - Crystal Drawing Animation

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I have given the C graphics program for Crystal Drawing Animation. Note that I have not used any of 3D pixel animation.

Source Code

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#include <graphics.h>

#include <math.h>

#include <conio.h>

#include <dos.h>

 

 

void DrawCrystal(int left, int top, int right, int bottom, double rang, int color)

{

    static const double PI = 3.1415926535;

 

    double cx = (left + right) / 2;

    double cy = (top + bottom) / 2;

 

    double radius = (right - left) / 2;

    double yr = radius / 2;

 

    {

 

      double tempangle = rang;

      double tempangle2 = rang + 90;

      double a = (radius - (tempangle / 90 * yr)) * cos(tempangle * PI / 180);

      double b = (radius - (tempangle / 90 * yr)) * sin(tempangle * PI / 180);

 

      double x1 = cx + a;

      double y1 = cy + b;

      double x2 = cx - a;

      double y2 = cy - b;

 

      double c = ((radius - yr) + ((tempangle2 - 90) / 90 * yr)) * cos(tempangle2 * PI / 180);

      double d = ((radius - yr) + ((tempangle2 - 90) / 90 * yr)) * sin(tempangle2 * PI / 180);

      double x3 = cx + c;

      double y3 = cy + d;

      double x4 = cx - c;

      double y4 = cy - d;

 

      setcolor(color);

      line(x1, y1, x3, y3);

      line(x3, y3, x2, y2);

      line(x2, y2, x4, y4);

      line(x4, y4, x1, y1);

 

      line(x1, y1, cx, top);

      line(x3, y3, cx, top);

      line(x2, y2, cx, top);

      line(x4, y4, cx, top);

 

      line(x1, y1, cx, bottom);

      line(x3, y3, cx, bottom);

      line(x2, y2, cx, bottom);

      line(x4, y4, cx, bottom);

 

    }

}

void main()

{

      int i, grd, grm;

      detectgraph(&grd,&grm);

      initgraph(&grd, &grm, "");

 

      for(i = 0; i <= 90; i += 5)

      {

            DrawCrystal(200, 50, 350, 350, i, 2);

            delay(200);

            if(i < 90)

                  DrawCrystal(200, 50, 350, 350, i, 0);

      }

 

      getch();

      closegraph();

}

Click here to get Turbo C source code and EXE application

Output

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