int ray_intersect(vector& ro,vector& rd,vector& ip,float& dist,float rad=0.0f)
| Parameter | Type | Description |
|---|---|---|
| ro | vector& | ray origin |
| rd | vector& | ray direction |
| ip | vector& | intersection point |
| dist | float& | intersection distance |
| rad | float | intersection radius |
Returns TRUE if an intersection is found, FALSE if no intersection is found.
This function computes the intersection with the face.
If an intersection is found, ip will be set to the intersection point,
dist will be set to the distance from the ray origin (ro) to the
indersection point (ip).
If rd is normalized, the dist value will be in scene units, if
not, if will be the distance divided by the ray direction (rd) length.
The rad parameter sets the collision radius. If >0, the collision
will be tested for a sphere with radius rad.