Computes the distance of point from a #graphene_plane_t.
a #graphene_point3d_t
Checks whether the two given #graphene_plane_t are equal.
a #graphene_plane_t
Frees the resources allocated by graphene_plane_alloc().
Retrieves the distance along the normal vector of the given #graphene_plane_t from the origin.
Initializes the given #graphene_plane_t using the given normal vector
and constant values.
a unit length normal vector defining the plane pointing towards the origin; if unset, we use the X axis by default
the distance from the origin to the plane along the normal vector; the sign determines the half-space occupied by the plane
Initializes the given #graphene_plane_t using the 3 provided co-planar points.
The winding order is counter-clockwise, and determines which direction the normal vector will point.
Negates the normal vector and constant of a #graphene_plane_t, effectively mirroring the plane across the origin.
Normalizes the vector of the given #graphene_plane_t, and adjusts the constant accordingly.
Transforms a #graphene_plane_t p using the given matrix
and normal_matrix.
If normal_matrix is %NULL, a transformation matrix for the plane
normal will be computed from matrix. If you are transforming
multiple planes using the same matrix it's recommended to compute
the normal matrix beforehand to avoid incurring in the cost of
recomputing it every time.
Allocates a new #graphene_plane_t structure.
The contents of the returned structure are undefined.
A 2D plane that extends infinitely in a 3D volume.
The contents of the
graphene_plane_tare private, and should not be modified directly.