multires_inline.hh File Reference

#include "BKE_multires.hh"
#include "BLI_math_matrix_types.hh"
#include "BLI_math_vector.hh"
#include "BLI_math_vector_types.hh"

Go to the source code of this file.

Functions
BLI_INLINE void	BKE_multires_construct_tangent_matrix (blender::float3x3 &tangent_matrix, const blender::float3 &dPdu, const blender::float3 &dPdv, const int corner)

Function Documentation

BKE_multires_construct_tangent_matrix()

BLI_INLINE void BKE_multires_construct_tangent_matrix	(	blender::float3x3 &	tangent_matrix,
		const blender::float3 &	dPdu,
		const blender::float3 &	dPdv,
		int	corner )

For a given partial derivatives of a PTEX face get tangent matrix for displacement.

Corner needs to be known to properly "rotate" partial derivatives when the matrix is being constructed for quad. For non-quad the corner is to be set to 0.

Definition at line 16 of file multires_inline.hh.

References BLI_assert_msg, BLI_INLINE, blender::math::cross(), blender::math::normalize(), blender::MatBase< T, NumCol, NumRow, Alignment >::x_axis(), blender::MatBase< T, NumCol, NumRow, Alignment >::y_axis(), and blender::MatBase< T, NumCol, NumRow, Alignment >::z_axis().

Referenced by blender::bke::subdiv::average_construct_tangent_matrix(), blender::bke::subdiv::eval_displacement(), and multires_reshape_tangent_matrix_for_corner().