World orientation in OpenGLES clarification

Posted by Dev2rights on Game Development See other posts from Game Development or by Dev2rights
Published on 2012-12-09T16:41:04Z Indexed on 2012/12/09 17:20 UTC
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ios

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opengl-es

I have a 3d tile map made up of individual billboards in OpenGLES. Each is a 2 triangles mesh and has a 3D Vector to determine its position and another defining its rotation from the origin at (0,0,0).

Im trying to work out how to rotate the entire tile map around a point be that the origin or some arbitrary point in space.

Im guessing i need to set up a Model Matrix instead for each tile. Then set up a world matrix for the world. Then on updating i would translate the world matrix and change the orientation and multiply it with each model matrix before rendering.

Is this correct ?

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