MouseDemo.cpp

/*
	author: S. M. Shahriar Nirjon
	last modified: August 8, 2008
*/
# include "iGraphics.h"

int x[100];
int y[100];
int total;


void drawFlowerAt(int p, int q)
{
	iSetColor(255, 0, 0);
	iFilledCircle(p+4, q+4, 4);

	iFilledCircle(p+4, q-4, 4);

	iFilledCircle(p-4, q+4, 4);

	iFilledCircle(p-4, q-4, 4);


	iSetColor(255, 255, 0);
	iFilledCircle(p, q, 4);
}

/* 
	function iDraw() is called again and again by the system.
*/
void iDraw()
{
	//place your drawing codes here	

	iClear();

	int i;
	for(i = 0; i < total; i++)
	{
		drawFlowerAt(x[i], y[i]);
	}

	iText(10, 10, "Left click to draw, Right click to delete.");
}

/* 
	function iMouseMove() is called when the user presses and drags the mouse.
	(mx, my) is the position where the mouse pointer is.
*/
void iMouseMove(int mx, int my)
{
	//place your codes here
}

/* 
	function iMouse() is called when the user presses/releases the mouse.
	(mx, my) is the position where the mouse pointer is.
*/
void iMouse(int button, int state, int mx, int my)
{
	if(button == GLUT_LEFT_BUTTON && state == GLUT_DOWN)
	{
		//place your codes here	
		if(total < 100)
		{
			x[total] = mx;
			y[total] = my;
			total++;
		}
	}
	if(button == GLUT_RIGHT_BUTTON && state == GLUT_DOWN)
	{
		//place your codes here	
		if(total>0)
		{
			total--;
		}
	}
}

/*
	function iKeyboard() is called whenever the user hits a key in keyboard.
	key- holds the ASCII value of the key pressed. 
*/
void iKeyboard(unsigned char key)
{
	if(key == 'x')
	{
		//do something with 'x'
		exit(0);
	}
	//place your codes for other keys here
}

/*
	function iSpecialKeyboard() is called whenver user hits special keys like-
	function keys, home, end, pg up, pg down, arraows etc. you have to use 
	appropriate constants to detect them. A list is:
	GLUT_KEY_F1, GLUT_KEY_F2, GLUT_KEY_F3, GLUT_KEY_F4, GLUT_KEY_F5, GLUT_KEY_F6, 
	GLUT_KEY_F7, GLUT_KEY_F8, GLUT_KEY_F9, GLUT_KEY_F10, GLUT_KEY_F11, GLUT_KEY_F12, 
	GLUT_KEY_LEFT, GLUT_KEY_UP, GLUT_KEY_RIGHT, GLUT_KEY_DOWN, GLUT_KEY_PAGE UP, 
	GLUT_KEY_PAGE DOWN, GLUT_KEY_HOME, GLUT_KEY_END, GLUT_KEY_INSERT 
*/
void iSpecialKeyboard(unsigned char key)
{

	if(key == GLUT_KEY_END)
	{
		exit(0);	
	}
	//place your codes for other keys here
}

int main()
{
	//place your own initialization codes here. 
	total = 0;
	iInitialize(400, 400, "MouseDemo");
	return 0;
}