How To Draw a Windmill Animation in C++ (Computer Graphics)

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ON

WINDMILL  ANIMATION

SOURCE CODE:

#include<iostream.h>

#include<conio.h>

#include<stdio.h>

#include<graphics.h>

#include<math.h>

#include<dos.h>

void wind(float x[7],float y[7]);

void main()

{

int gd=DETECT,gm;

float x[7],y[7],maxx,maxy,xw1,yw1,xw2,yw2;

float theta=30;

initgraph(&gd, &gm, "C:\\TC\\bgi");

maxx=getmaxx();

maxy=getmaxy();

x[0]=maxx/2;

y[0]=maxy/2;

x[1]=y[4]=x[2]=-90;

y[6]=y[5]=y[1]=60;

y[2]=35;

y[3]=-100;

x[4]=20;

x[3]=0;

x[5]=90;

x[6]=65;

theta=theta*22/7/180;

while(kbhit()==0)

{

wind(x,y);

xw1=cos(theta)*x[1]+sin(theta)*y[1];

yw1=-sin(theta)*x[1]+cos(theta)*y[1];

xw2=cos(theta)*x[2]+sin(theta)*y[2];

yw2=-sin(theta)*x[2]+cos(theta)*y[2];

x[1]=xw1;

y[1]=yw1;

x[2]=xw2;

y[2]=yw2;

xw1=cos(theta)*x[3]+sin(theta)*y[3];

yw1=-sin(theta)*x[3]+cos(theta)*y[3];

xw2=cos(theta)*x[4]+sin(theta)*y[4];

yw2=-sin(theta)*x[4]+cos(theta)*y[4];

x[3]=xw1;

y[3]=yw1;

x[4]=xw2;

y[4]=yw2;

xw1=cos(theta)*x[5]+sin(theta)*y[5];

yw1=-sin(theta)*x[5]+cos(theta)*y[5];

xw2=cos(theta)*x[6]+sin(theta)*y[6];

yw2=-sin(theta)*x[6]+cos(theta)*y[6];

x[5]=xw1;

y[5]=yw1;

x[6]=xw2;

y[6]=yw2;

delay(75);

cleardevice();

}

closegraph();

getch();

}

void wind(float x[7],float y[7])

{

cleardevice();

line(x[0],y[0],x[0]-50,y[0]+200);

line(x[0],y[0],x[0]+50,y[0]+200);

line(x[0]-60,y[0]+200,x[0]+60,y[0]+200);

line(x[0],y[0],x[0]+x[1],y[0]-y[1]);

line(x[0],y[0],x[0]+x[2],y[0]-y[2]);

line(x[0]+x[1],y[0]-y[1],x[0]+x[2],y[0]-y[2]);

line(x[0],y[0],x[0]+x[3],y[0]-y[3]);

line(x[0],y[0],x[0]+x[4],y[0]-y[4]);

line(x[0]+x[3],y[0]-y[3],x[0]+x[4],y[0]-y[4]);

line(x[0],y[0],x[0]+x[5],y[0]-y[5]);

line(x[0],y[0],x[0]+x[6],y[0]-y[6]);

line(x[0]+x[5],y[0]-y[5],x[0]+x[6],y[0]-y[6]);

}

OUTPUT: