Mapping Textures to Triangle Strips Consisting of More than Six Verticies

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Started by Str4ng3 July 19, 2006 10:18 AM

1 comment, last by Str4ng3 17 years, 9 months ago

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July 19, 2006 10:18 AM

In lesson 19 there is an example of how to create a simple 4 vertex triangle strip and then map a texture to it. I expanded the strip to 6 verticies (4 triangles) and was able to map the same texture with no problem. However, If I expand to 10 vertices I am unable to map all the texture to all the points in the strip without the texture being distorted. However, If I commment vertex #s 2,3,6, and 7 the texture is stretched perfectly. Code with commented vertices:


	glBegin(GL_TRIANGLE_STRIP);	
		glTexCoord2d(1,1);
		glVertex3f(1,1,0); // Top Right
		
		glTexCoord2d(0,1);
		glVertex3f(0,1,0); // Top Left
		
		//glTexCoord2d(1,.25);
		//glVertex3f(1,0,0); 
		
		//glTexCoord2d(0,.25);
		//glVertex3f(0,0,0); 
		
		glTexCoord2d(1,.5);
		glVertex3f(1,-1,0); 
		
		glTexCoord2d(0,.5);
		glVertex3f(0,-1,0); 
		
		//glTexCoord2d(1,.75);
		//glVertex3f(1,-2,0);

		//glTexCoord2d(0,.75);
		//glVertex3f(0,-2,0);

		glTexCoord2d(1,0); // Bottom Right
		glVertex3f(1,-3,0);

		glTexCoord2d(0,0);// Bottom Left
		glVertex3f(0,-3,0);
	glEnd();