Week 1 Assignment

void drawGrid(void){
glLineWidth( 1 );
glBegin( GL_LINES );
glColor4f(0,0,0,0.1);
for( i=10; i< windowW; i+=10 )
{
glVertex2f(i,0);
glVertex2f(i,windowW);
}
for( i=10; i< windowH; i+=10 )
{
glVertex2f(0,i);
glVertex2f(windowH,i);
}
glEnd();
glPointSize(3) ;
glBegin( GL_POINTS );
glColor4f(0,0,0,0.7);
for( j=10; j< windowH; j+=10){
for( i=10; i< windowW; i+=10 )
{
glVertex2f(i,j);
}
}
glEnd();
}