Matrix.unprojectPoint3d
void unprojectPoint3d(graphene.matrix.Matrix modelview, graphene.point3_d.Point3D point, out graphene.point3_d.Point3D res)Unprojects the given point using the projection matrix and a modelview matrix.
Parameters
modelview | a #graphene_matrix_t for the modelview matrix; this is the inverse of the modelview used when projecting the point |
point | a #graphene_point3d_t with the coordinates of the point |
res | return location for the unprojected point |