glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
for(BYTE i=0; i<3; i++)
{
if(i==0)
{
glTranslatef(xAxis, yAxis, -4.5);
glRotatef(tick, 0, 0, 1);
//glColor4f(1, 1, 1, .5);
glScalef(3.3, 2.9, 1);
}
else if(i==1)
{
glTranslatef(-1, 0, -3.5);
glRotatef(tick, 1, 0, 0);
glColor4f(1, 1, 1, .7);
}
else
{
glTranslatef(1, 0, -3.5);
glRotatef(tick, 0, 1, 0);
//glColor4f(1, 1, 1, 1-alp);
}
glBegin(GL_QUADS);
glTexCoord2f (0, 0); glVertex3f (-1.0f, -1.0f, 0);
glTexCoord2f (1, 0); glVertex3f (1.0f, -1.0f, 0);
glTexCoord2f (1, 1); glVertex3f (1.0f, 1.0f, 0);
glTexCoord2f (0, 1); glVertex3f (-1.0f, 1.0f, 0);
glEnd ();
glLoadIdentity();
}
glColor3f(1,1,1);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
//gluOrtho2D(0, this->ClW, this->ClH, 0);
glOrtho(0, this->ClW, this->ClH, 0, -abmp.W, abmp.H);
glTranslatef(mouseX, mouseY, 0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glBegin(GL_QUADS);
glTexCoord2f (0.0f,0.0f); glVertex2f (-abmp.W/2, -abmp.H/2);
glTexCoord2f (1.0f, 0.0f); glVertex2f (abmp.W/2, -abmp.H/2);
glTexCoord2f (1.0f, 1.0f); glVertex2f (abmp.W/2, abmp.H/2);
glTexCoord2f (0.0f, 1.0f); glVertex2f (-abmp.W/2, abmp.H/2);
glEnd (); 3D to Ortho displays 3D then 3D dissappears!
Author
This is annoying. I am trying to draw in 3D in the first part of my code and then switch to Ortho to draw in mouse coordinates but when I change the mode to projection for ortho, a weird thing happens!
All the 3D code (in the loop) appears and vanishes. All that is left is the Ortho mode''s drawing.
Author
My mistake, as far as I know the code is ok. I was having the problem because of a timer.
Author
Wrong I was! It has something to do with setting the perspective again; gluPerspective
Am I right?
Am I right?
yes, indeed you are right.
you need to put this after your glClear(..) call:
and then carry on as normal with the rest of the code, starting with your first glMatrixMode(GL_MODELVIEW)
you need to put this after your glClear(..) call:
glMatrixMode(GL_PROJECTION);glLoadIdentity();gluPerspective(angle, fov, near, far);and then carry on as normal with the rest of the code, starting with your first glMatrixMode(GL_MODELVIEW)
This topic is closed to new replies.
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