Interface IParticleCollision

Namespace: ValveResourceFormat.Particles
Assembly: ValveResourceFormat.dll

The world geometry a particle system can trace against, for collision and ground placement. Traces run between any two points: along a particle's movement, or out from a control point to find the surfaces a collision plane set is built from.

public interface IParticleCollision

Properties

HasGeometry

Whether there is any geometry at all, so a function that needs it can skip its traces.

bool HasGeometry { get; }

Property Value

bool

None

Collision for systems with no world around them: every trace misses.

public static IParticleCollision None { get; }

Property Value

IParticleCollision

Methods

TraceRay(Vector3, Vector3, out Vector3, out Vector3, out float)

Traces a ray from rayStart to rayEnd against the world.

bool TraceRay(Vector3 rayStart, Vector3 rayEnd, out Vector3 position, out Vector3 normal, out float fraction)

Parameters

rayStart Vector3

Start of the ray.

rayEnd Vector3

End of the ray.

position Vector3

The nearest hit point, or rayEnd on a miss.

normal Vector3

The surface normal at the hit point, facing the ray, or zero on a miss.

fraction float

How far along the ray the hit is, from 0 at its start to 1 at its end, which it is on a miss.

Returns

bool

Whether the ray hit anything.