minib3d

Use this command to copy a region of the backbuffer to a texture.

The region copied from the backbuffer will start at (0,0), and end at the texture's width and height.

Therefore if you want to copy the whole of a 3D scene to a texture, you must first resize the camera viewport to the size of the texture, use RenderWorld to render the camera, then use this command to copy the backbuffer to the texture.

Note that if a texture has the mipmap flag enabled (by default it does), then this command must be called for each mipmap, otherwise the texture will appear to fade into a different, non-matching mipmap as you move away from it. A routine similar to the one below will copy the backbuffer to each mipmap, making sure the camera viewport is the same size as the mipmap.

For i=0 Until tex.CountMipmaps() CameraViewport 0,0,tex.MipmapWidth(),tex.MipmapHeight() Renderworld BackBufferToTex(tex,i) Next

It may be easier to disable the mipmap flag for the texture. To do so, use ClearTextureFilters after calling Graphics3D (the mipmap flag is a default filter).

If you are using this command to copy to a cubemap texture, use SetCubeFace to first select which portion of the texture you will be copying to. Note that in MiniB3D mipmaps are not used by cubemaps, so ignore the information about mipmaps for normal textures above.

See the cubemap.bmx example included with MiniB3D to learn more about cubemapping.

It is used to set the radius of a mesh's 'cull sphere' - if the 'cull sphere' is not inside the viewing area, the mesh will not be rendered.

A mesh's cull radius is set automatically, therefore in most cases you will not have to use this command.

One time you may have to use it is for animated meshes where the default cull radius may not take into account all animation positions, resulting in the mesh being wrongly culled at extreme positions.

After setting positions / rotation of the bones, you will have to run this function after all the changes. Also has to be used after UpdateWorld otherwise the positions will reset.

It should also be noted that it moves the bones relative to the parent bone/entity. And not from the worlds proper X Y Z coordinates.