Raycast

LDKRay

typedef struct LDKRay{
  Vec3 origin;
  Vec3 direction;
}LDKRay;

LDKRaycastHit

typedef struct LDKRaycastHit{
  Vec3 position;
  Vec3 normal;
  float distance;
  u32 triangle_index;
}LDKRaycastHit;

ldk_ray_at

Compute the 3D position along a ray at the specified distance.

LDK_API Vec3 ldk_ray_at(
 LDKRay ray,
 float distance
);

ldk_ray_make

Construct a 3D ray from origin and direction.

LDK_API bool ldk_ray_make(
 Vec3 origin,
 Vec3 direction,
 LDKRay *out_ray
);

ldk_ray_transform

Transform a ray using a matrix.

LDK_API bool ldk_ray_transform(
 LDKRay ray,
 Mat4 transform,
 LDKRay *out_ray
);

ldk_raycast_plane

Test the intersection of a ray with a plane.

LDK_API bool ldk_raycast_plane(
 LDKRay ray,
 Vec3 plane_point,
 Vec3 plane_normal,
 LDKRaycastHit *out_hit
);

ldk_raycast_triangle

Test the intersection of a ray with a triangle.

LDK_API bool ldk_raycast_triangle(
 LDKRay ray,
 Vec3 a,
 Vec3 b,
 Vec3 c,
 LDKRaycastHit *out_hit
);