using the constrain angle constraint
podcast 191- Working in OpenGL with Perspective Projection
The normal way of looking at 3D views and Vectorworks has been to use wireframe with orthogonal projection. Lately I have been trying Vectorworks with OpenGL rendering and perspective projection and it works very well. When you use it in this method you can see a false ground and false sky which gives the impression of your height above the object. The color of the ground in the sky is adjustable through the interactive appearance settings.
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