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rotate


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#1 mentaman   Members   -  Reputation: 99

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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);


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#2 Sik_the_hedgehog   Crossbones+   -  Reputation: 2211

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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.




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