Jump to content

  • Log In with Google      Sign In   
  • Create Account

Banner advertising on our site currently available from just $5!


1. Learn about the promo. 2. Sign up for GDNet+. 3. Set up your advert!


rotate


Old topic!
Guest, the last post of this topic is over 60 days old and at this point you may not reply in this topic. If you wish to continue this conversation start a new topic.

  • You cannot reply to this topic
1 reply to this topic

#1 mentaman   Members   -  Reputation: 99

Like
0Likes
Like

Posted 22 December 2011 - 04:59 AM

when I rotate the player it draws tree black lines:
Posted Image


When I don't rotate the player, he doesn't have this lines...

This the rotate code:
if(ySpeed != 0 || xSpeed != 0)
				deg = fmod(atan2(yP-(yP+ySpeed),xP-(xP+xSpeed))/3.14159265f*180.f,360.f);
			glPushAttrib(GL_TRANSFORM_BIT);
			glMatrixMode(GL_TEXTURE);
			glLoadIdentity();
			glPushMatrix();
			glTranslatef(0.5f, 0.5f, 0.f);
			glRotatef(deg, 0.f, 0.f, 1.f);
			glTranslatef(-0.5f,-0.5f, 0.f);
			glMatrixMode(GL_MODELVIEW); 
			glPopAttrib();

		
		glEnable (GL_BLEND);
		glColor4f(1.0f,1.0f,1.0f,1.0f);
		glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
		
		glBegin(GL_QUADS);				//draw...
			glTexCoord2d(1.0,1.0);glVertex3f( xP, yP2,  0);
			glTexCoord2d(0.0,1.0);glVertex3f( xP2, yP2, 0);
			glTexCoord2d(0.0,0.0);glVertex3f( xP2, yP, 0);
			glTexCoord2d(1.0,0.0);glVertex3f( xP, yP,  0);
		glEnd();
		

		glMatrixMode(GL_TEXTURE);
		glPopMatrix();

		glMatrixMode(GL_MODELVIEW); 		glDisable (GL_BLEND);


Sponsor:

#2 Sik_the_hedgehog   Crossbones+   -  Reputation: 2197

Like
1Likes
Like

Posted 01 January 2012 - 06:42 AM

It's trying to render what's beyond the texture. Because the wrapping mode is "clamp", it'll extend what's in the borders (if it was "repeat", you'd get tiling instead).

Why are you rotating the texture instead of the polygon?

EDIT: just noticed I replied to a more than one week old post >_>' (well, still not very old)
Don't pay much attention to "the hedgehog" in my nick, it's just because "Sik" was already taken =/ By the way, Sik is pronounced like seek, not like sick.




Old topic!
Guest, the last post of this topic is over 60 days old and at this point you may not reply in this topic. If you wish to continue this conversation start a new topic.



PARTNERS