SpherePostProcessShape

Remarks

The second built-in shape, and it exists so that the first non-box case is not the water body — see IPostProcessShape. It is also the shape a designer actually wants for a light shaft, a fire's warmth or a pool of damp: a box fading over a radius has corners, and corners are visible in a grade.

⚠ The exterior distance is exact for a sphere and a bound for an ellipsoid. There is no closed form for the distance to an ellipsoid's surface, so non-uniform radii use (‖p ⁄ r‖ − 1) · min r, which never overstates the distance and therefore never fades a volume out earlier than its blend radius says. A volume authored with uniform radii — the common one — gets the exact answer.

Fields and properties (1)

• public Vector3 Radii

  The ellipsoid's radii, in the entity's own space.

Methods (3)

• public SpherePostProcessShape(in Matrix4x4 transform, Vector3 radii)

  Creates one.

• public bool Contains(Vector3 world, out float distanceOutside)

  Whether a world-space point is inside, and how far outside it is when it is not.

• public static float ExteriorDistance(Vector3 local, Vector3 radii)

  How far a point in the ellipsoid's own space is outside its surface.

Used by (2)

• PostProcessVolumeVixen.Rendering
• PostProcessVolumeSystemVixen.Rendering