PK_proj_method_t

typedef int PK_proj_method_t;

Used in:

PK_CURVE_project_o_t

This datatype controls which method of projection should be performed

It has the values:

PK_proj_method_normal_c      A normal projection is performed along surface
                             normals. A given point on a curve is projected
                             along the surface normal that passes through the
                             given point. In order for the projection of the
                             given point to be well-defined, the point
                             must be within the local radius of curvature
                             of the surface so that a unique normal passes
                             through it.

PK_proj_method_vector_c      A vector projection is performed in the direction
                             specified by 'direction'. A given point on a curve
                             is projected from the curve in the direction
                             specified by 'direction'.

PK_proj_method_perspective_c A perspective projection is performed using the
                             supplied 'eye_position'.  A given point on a curve
                             is projected from the curve in the direction
                             defined by the 'eye_position' to the given point.

PK_proj_method_unset_c       The projection method may be determined from the
                             other supplied options. (Deprecated.)