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MouseDemo.cpp
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MouseDemo.cpp
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# include "iGraphics.h"
int x[100];
int y[100];
int total;
int dragMX=0,dragMY=0;
int cursorMX,cursorMY;
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();
iFilledRectangle(dragMX,dragMY,100,100);
int i;
for(i = 0; i < total; i++)
{
drawFlowerAt(x[i], y[i]);
}
iText(10, 10, "Left click to draw, Right click to delete.");
/*Drawing pointer*/
iSetColor(255,0,0);
iLine(cursorMX,cursorMY,cursorMX,cursorMY+10);
iLine(cursorMX,cursorMY,cursorMX,cursorMY-10);
iLine(cursorMX,cursorMY,cursorMX+10,cursorMY);
iLine(cursorMX,cursorMY,cursorMX-10,cursorMY);
}
/*
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
dragMX = mx;
dragMY = my;
}
/*
function iPassiveMouse() is called when the user moves the mouse.
(mx, my) is the position where the mouse pointer is.
*/
void iPassiveMouse(int mx, int my)
{
cursorMX = mx;
cursorMY = 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");
iStart();
return 0;
}