Frustum Culling
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Notes:
- A view frustum is defined as four-plus-two planes attached to a camera.
- An inwards facing plane for each edge of the window/viewport.
- Simply referred to as
top,right,bottomandleft. - Built from the cameras position and field-of-view.
- Simply referred to as
- A plane facing into the screen called the
near-plane, at some close distancedepth_near/zNear. - A plane facing the camera called the
far-plane, at some far distancedepth_far/zFar.
- An inwards facing plane for each edge of the window/viewport.
- Pieces of geometry (like meshes and chunks) have bounding volumes.
- Generally an axis-aligned bounding box, defined as a pair of
min&max3d vectors, is used. - A chunk of voxels has an implicit bounding-box that fully encases it.
- A chunk may have an explicit bounding-box encasing only the visible voxels.