Hello, i am a beginner openGL programmer, and i have the following problem: I want to draw a triangle in the screen, keep it there for 5 seconds, make it dissapear and then draw another polygon.I use the following code: glTranslatef(-2.5f,-4.0f,-18.0f); static int scene=0; static DWORD change=GetTickCount()+5000; if (change < GetTickCount()) { change+=5000; scene++; } switch(scene) { case 0:{glRotatef(rquad,0.0f,0.2f,0.0f);} case 1:{text2();glRotatef(rquad,0.0f,0.4f,0.0f);} case 2:{text1();glRotatef(rquad,0.0f,0.6f,0.0f);} } the problem is that text1() appears in screen, but after 5 seconds text2() also appears,whithout text1() been cleared. How can i make first clear text1() and then draw text2() ???

You''re missing some breaks:


switch(scene)
{
case 0:{glRotatef(rquad,0.0f,0.2f,0.0f);}break;

case 1:{text2();glRotatef(rquad,0.0f,0.4f,0.0f);}break;

case 2:{text1();glRotatef(rquad,0.0f,0.6f,0.0f);}break;
}


baumep

thanks, this really works...But what if we want to keep the last command in case for ever? this is because EVERY thing will stay in the screen for 5 seconds.How can we say to stop this sequence and keep the last polygon drawn for ever?Maybe with another break?

Nope u should use a default: . Instead of doing another "case #": blabal, do "default: show_scene_forever;break;"

default: ??? what is ithis?this is the first time i heard about it.Can you give me some help on what that''s doing? Can i find it in one of NeHe''s tutorials?

switch(pfft)
{
case 1: something; break;
case 2: some other thing; break;
default: something else; break;}

if pfft is something other than one or two, whats in the default thing will be executed.