Type Alias RayIntersection 

pub type RayIntersection = RayIntersection;

The intersection between a ray and a collider.

Aliased Type

pub struct RayIntersection {
    pub time_of_impact: f32,
    pub normal: Vec3,
    pub feature: FeatureId,
    pub subshape: u32,
}

Fields

time_of_impact: f32

The time of impact (parameter t) where the ray hits the shape.

The exact hit point can be computed with ray.point_at(time_of_impact). If the ray direction is normalized, this represents the distance traveled.

normal: Vec3

The surface normal at the intersection point.

• Typically points outward from the shape
• May point inward if ray origin is inside a non-solid shape
• May be unreliable if time_of_impact is exactly zero

Note: This should be a unit vector but is not enforced by the type system yet.

feature: FeatureId

The geometric feature (vertex, edge, or face) that was hit.

This can be used for more detailed collision response or to identify exactly which part of the shape was struck.

subshape: u32

The sub-shape that was hit.

Identifies the part of a composite shape the ray struck: a triangle of a TriMesh, a part of a Compound, a voxel of a Voxels, and so on. Always 0 for a shape with no sub-shapes.