Back to General and Gameplay Programming

rotate opengl

General and Gameplay Programming Programming

Started by tomsh December 19, 2011 02:43 PM

2 comments, last by tomsh 12 years, 3 months ago

tomsh

Author

December 19, 2011 02:43 PM

Hello, I tried to rotate my player.like that

glTranslatef(-cem.x, -cem.y, -13.f);



			glPushMatrix();

			glRotatef(45.f, 0.f, 0.f, 1.f);

			rect->Draw();	

		     glPopMatrix();

Now to the problem...As you can see in the picture, I rotated the green player, and the blue and the red I didn't rotate.So, the green player is moving like in the green arrow, but I want he will move like in the red arrow(vertical)...What I mean it convinced the place rotate, I want only the image...Do you know what should I do?Thanks!

Ripiz

539

December 19, 2011 06:57 PM

Use [font=CourierNew, monospace][size=2]glRotatef() before[/font][font=CourierNew, monospace] [/font][font=CourierNew, monospace][size=2]glTranslatef(). Matrix order determines what happens (A * B != B * A with matrices).[/font]

tomsh

Author

December 19, 2011 07:17 PM

I already tried that, but it still weird.

tomsh

Author

December 21, 2011 07:42 AM

I fixed it like that:



			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);

It rotate only the texture, and not all..

rotate opengl

This topic is closed to new replies.

Popular Topics

Recommended Tutorials

rotate opengl

This topic is closed to new replies.

Popular Topics

Recommended Tutorials

Reticulating splines