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Submitted on: 1/1/2015 5:33:00 AM
By: Psypher (from psc cd)  
Level: Intermediate
User Rating: By 3 Users
Compatibility: Borland C++
Views: 963
 
     demonstrate how to make a circle with out using the provided circle command. for those of you who have ever need to make use of the symetry of a circle here's a program that will help. The code provided is made into a simple screen saver
 
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//**************************************
// Name: circle
// Description:demonstrate how to make a circle with out using the provided circle command. for those of you who have ever need to make use of the symetry of a circle here's a program that will help. The code provided is made into a simple screen saver
// By: Psypher (from psc cd)
//**************************************

//by: psypher whopper
#include <stdio.h>
#include <time.h>
#include <conio.h>
#include <graphics.h>
#include <math.h>
#include <dos.h>
#include <stdlib.h>
#include <time.h>
int main(void)
{
	int gdriver = DETECT, gmode;
	double x, y, theta, r;
	int i, c, thetamax, step;
	initgraph(&gdriver, &gmode, "");
	struct palettetype pal;
	getpalette(&pal);
	for (i=0; i<pal.size; i++)
	setrgbpalette(pal.colors[i], i * 2 , 2, i*4);
	randomize();
	do {
	for (i=0; i<pal.size; i++)
	setrgbpalette(pal.colors[i], i * random(14) ,i * random(14), i * random(14));
	r = random(230) + 20;
	thetamax = random(360) + 1;
	step = random(15) + 1;
	for(theta = 0; theta <= thetamax; theta+=step)
		{
		if(kbhit())
			c = getch();
		x = cos(theta);
		y = sin(theta);
		setcolor(random(14)+ 1);
		delay(10);
		rectangle(300 + x * r, 200 + y * r, 350 + x * r, 250 + y * r);
		}
 for(theta = 0; theta <= thetamax; theta+=step)
		{
		if(kbhit())
			c = getch();
		x = cos(theta);
		y = sin(theta);
		setcolor(0);
		delay(10);
		rectangle(300 + x * r, 200 + y * r, 350 + x * r, 250 + y * r);
		}
	if(kbhit())
		c = getch();
	} while(c != 13);
	
	return(0);
}


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