void QFbScreen::initializeCompositor()
{
mScreenImage = new QImage(mGeometry.size(), mFormat);
mRedrawTimer.setSingleShot(true);
mRedrawTimer.setInterval(0);
connect(&mRedrawTimer, SIGNAL(timeout()), this, SLOT(doRedraw()));
}
void BGMondrian::redraw()
{
//glPushMatrix();
srand( 600 );
//glBegin( GL_QUADS );
doRedraw( 0, 800, 0, 600, 0, 0 );
//glEnd();
//glPopMatrix();
}
void BGMondrian::doRedraw( float left, float right, float bottom, float top, int axis, int level )
{
if (level < 4)
{
float amt = frand( 0.0f, 1.0f );
// low level, split
float l_left, l_right, l_top, l_bottom;
float r_left, r_right, r_top, r_bottom;
if (axis < 2)
{
l_top = top;
r_top = top;
l_bottom = bottom;
r_bottom = bottom;
l_left = left;
l_right = (float)lerp( left, right, amt );
r_left = l_right;
r_right = right;
}
else
{
l_left = left;
r_left = left;
l_right = right;
r_right = right;
l_top = top;
l_bottom = (float)lerp( top, bottom, amt );
r_top = l_bottom;
r_bottom = bottom;
}
doRedraw( l_left, l_right, l_bottom, l_top, (axis+1) % 3, level+1 );
doRedraw( r_left, r_right, r_bottom, r_top, (axis+1) % 3, level+1 );
}
else
{
// higher level
int colorNdx = irand( 0, 4);
if (colorNdx == 0)
{
glColor3f( pally.base.r, pally.base.g, pally.base.b );
}
else if (colorNdx==1)
{
glColor3f( pally.design1.r, pally.design1.g, pally.design1.b );
}
else if (colorNdx==2)
{
glColor3f( pally.design2.r, pally.design2.g, pally.design2.b );
}
else
{
glColor3f( pally.accent.r, pally.accent.g, pally.accent.b );
}
// draw the quad
printf("%f %f %f %f\n", left, right, bottom, top );
glBegin( GL_POLYGON );
glEnd();
glBegin( GL_POLYGON );
glVertex3f( left, bottom, 0 );
glVertex3f( right, bottom, 0 );
glVertex3f( right, top, 0 );
glVertex3f( left, top, 0 );
//glVertex3f( 0, 0, 0 );
//glVertex3f( 800, 0, 0 );
//glVertex3f( 800, 600, 0 );
//glVertex3f( 0, 600, 0 );
glEnd();
//glBegin( GL_POLYGON );
//glVertex3f( 0, 0, 0 );
//glVertex3f( 800, 0, 0 );
//glVertex3f( 800, 600, 0 );
//glVertex3f( 0, 600, 0 );
//glEnd();
}
}