#include "BLI_utildefines.h"
#include "BLI_math_geom.h"
#include "BLI_math_vector.h"
#include "BLI_string.h"
#include "BLI_utildefines_stack.h"
#include "MEM_guardedalloc.h"
#include "BLT_translation.hh"
#include "DNA_defaults.h"
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "DNA_screen_types.h"
#include "BKE_deform.hh"
#include "BKE_mesh_mapping.hh"
#include "UI_interface_layout.hh"
#include "UI_resources.hh"
#include "BLO_read_write.hh"
#include "RNA_access.hh"
#include "RNA_prototypes.hh"
#include "MOD_ui_common.hh"
#include "MOD_util.hh"
#include "eigen_capi.h"

Enumerations
enum	{ LAPDEFORM_SYSTEM_NOT_CHANGE = 0 , LAPDEFORM_SYSTEM_IS_DIFFERENT , LAPDEFORM_SYSTEM_ONLY_CHANGE_ANCHORS , LAPDEFORM_SYSTEM_ONLY_CHANGE_GROUP , LAPDEFORM_SYSTEM_ONLY_CHANGE_MESH , LAPDEFORM_SYSTEM_CHANGE_VERTEXES , LAPDEFORM_SYSTEM_CHANGE_EDGES , LAPDEFORM_SYSTEM_CHANGE_NOT_VALID_GROUP }

Functions
static LaplacianSystem *	newLaplacianSystem ()
static LaplacianSystem *	initLaplacianSystem (int verts_num, int edges_num, int tris_num, int anchors_num, const char defgrpName[64], int iterations)
static void	deleteLaplacianSystem (LaplacianSystem *sys)
static void	createFaceRingMap (const int mvert_tot, blender::Span< blender::int3 > corner_tris, blender::Span< int > corner_verts, MeshElemMap r_map, int r_indices)
static void	createVertRingMap (const int mvert_tot, const blender::Span< blender::int2 > edges, MeshElemMap r_map, int r_indices)
static void	initLaplacianMatrix (LaplacianSystem *sys)
static void	computeImplictRotations (LaplacianSystem *sys)
static void	rotateDifferentialCoordinates (LaplacianSystem *sys)
static void	laplacianDeformPreview (LaplacianSystem sys, float(vertexCos)[3])
static bool	isValidVertexGroup (LaplacianDeformModifierData lmd, Object ob, Mesh *mesh)
static void	initSystem (LaplacianDeformModifierData lmd, Object ob, Mesh mesh, float(vertexCos)[3], int verts_num)
static int	isSystemDifferent (LaplacianDeformModifierData lmd, Object ob, Mesh *mesh, int verts_num)
static void	LaplacianDeformModifier_do (LaplacianDeformModifierData lmd, Object ob, Mesh mesh, float(vertexCos)[3], int verts_num)
static void	init_data (ModifierData *md)
static void	copy_data (const ModifierData md, ModifierData target, const int flag)
static bool	is_disabled (const Scene , ModifierData md, bool)
static void	required_data_mask (ModifierData md, CustomData_MeshMasks r_cddata_masks)
static void	deform_verts (ModifierData md, const ModifierEvalContext ctx, Mesh *mesh, blender::MutableSpan< blender::float3 > positions)
static void	free_data (ModifierData *md)
static void	panel_draw (const bContext , Panel panel)
static void	panel_register (ARegionType *region_type)
static void	blend_write (BlendWriter writer, const ID id_owner, const ModifierData *md)
static void	blend_read (BlendDataReader reader, ModifierData md)

Variables
ModifierTypeInfo	modifierType_LaplacianDeform

Enumeration Type Documentation

◆ anonymous enum

anonymous enum

Enumerator
LAPDEFORM_SYSTEM_NOT_CHANGE
LAPDEFORM_SYSTEM_IS_DIFFERENT
LAPDEFORM_SYSTEM_ONLY_CHANGE_ANCHORS
LAPDEFORM_SYSTEM_ONLY_CHANGE_GROUP
LAPDEFORM_SYSTEM_ONLY_CHANGE_MESH
LAPDEFORM_SYSTEM_CHANGE_VERTEXES
LAPDEFORM_SYSTEM_CHANGE_EDGES
LAPDEFORM_SYSTEM_CHANGE_NOT_VALID_GROUP

Definition at line 41 of file MOD_laplaciandeform.cc.

Function Documentation

◆ blend_read()

void blend_read	(	BlendDataReader *	reader,
		ModifierData *	md )

static

Definition at line 845 of file MOD_laplaciandeform.cc.

References BLO_read_shared(), LaplacianDeformModifierData::cache_system, LaplacianDeformModifierData::vertexco, and LaplacianDeformModifierData::vertexco_sharing_info.

◆ blend_write()

void blend_write	(	BlendWriter *	writer,
		const ID *	id_owner,
		const ModifierData *	md )

static

Definition at line 818 of file MOD_laplaciandeform.cc.

References BLI_assert, BLO_write_is_undo(), BLO_write_shared(), BLO_write_struct_at_address, eModifierFlag_OverrideLibrary_Local, ModifierData::flag, ID_IS_LINKED, ID_IS_OVERRIDE_LIBRARY, LaplacianDeformModifierData::vertexco, LaplacianDeformModifierData::vertexco_sharing_info, and LaplacianDeformModifierData::verts_num.

◆ computeImplictRotations()

void computeImplictRotations ( LaplacianSystem * sys )

static

Definition at line 312 of file MOD_laplaciandeform.cc.

References copy_v3_v3(), dot_v3v3(), fabsf, i, normalize_v3(), sub_v3_v3v3(), and LaplacianSystem::verts_num.

Referenced by laplacianDeformPreview().

◆ copy_data()

void copy_data	(	const ModifierData *	md,
		ModifierData *	target,
		const int	flag )

static

Definition at line 733 of file MOD_laplaciandeform.cc.

References BKE_modifier_copydata_generic(), LaplacianDeformModifierData::cache_system, blender::implicit_sharing::copy_shared_pointer(), flag, LaplacianDeformModifierData::vertexco, and LaplacianDeformModifierData::vertexco_sharing_info.

◆ createFaceRingMap()

void createFaceRingMap	(	const int	mvert_tot,
		blender::Span< blender::int3 >	corner_tris,
		blender::Span< int >	corner_verts,
		MeshElemMap **	r_map,
		int **	r_indices )

static

Definition at line 155 of file MOD_laplaciandeform.cc.

References MeshElemMap::count, i, blender::Span< T >::index_range(), indices, MeshElemMap::indices, and MEM_calloc_arrayN().

Referenced by initSystem().

◆ createVertRingMap()

void createVertRingMap	(	const int	mvert_tot,
		const blender::Span< blender::int2 >	edges,
		MeshElemMap **	r_map,
		int **	r_indices )

static

Definition at line 192 of file MOD_laplaciandeform.cc.

References MeshElemMap::count, i, blender::Span< T >::index_range(), indices, MeshElemMap::indices, and MEM_calloc_arrayN().

Referenced by initSystem().

◆ deform_verts()

void deform_verts	(	ModifierData *	md,
		const ModifierEvalContext *	ctx,
		Mesh *	mesh,
		blender::MutableSpan< blender::float3 >	positions )

static

Definition at line 763 of file MOD_laplaciandeform.cc.

References blender::MutableSpan< T >::data(), LaplacianDeformModifier_do(), ModifierEvalContext::object, and blender::MutableSpan< T >::size().

◆ deleteLaplacianSystem()

void deleteLaplacianSystem ( LaplacianSystem * sys )

static

Definition at line 136 of file MOD_laplaciandeform.cc.

References LaplacianSystem::context, EIG_linear_solver_delete(), and MEM_SAFE_FREE.

Referenced by free_data(), and LaplacianDeformModifier_do().

◆ free_data()

void free_data ( ModifierData * md )

static

Definition at line 775 of file MOD_laplaciandeform.cc.

References LaplacianDeformModifierData::cache_system, deleteLaplacianSystem(), blender::implicit_sharing::free_shared_data(), LaplacianDeformModifierData::vertexco, LaplacianDeformModifierData::vertexco_sharing_info, and LaplacianDeformModifierData::verts_num.

◆ init_data()

void init_data ( ModifierData * md )

static

Definition at line 724 of file MOD_laplaciandeform.cc.

References BLI_assert, DNA_struct_default_get, MEMCMP_STRUCT_AFTER_IS_ZERO, and MEMCPY_STRUCT_AFTER.

◆ initLaplacianMatrix()

void initLaplacianMatrix ( LaplacianSystem * sys )

static

This method computes the Laplacian Matrix and Differential Coordinates for all vertex in the mesh. The Linear system is LV = d Where L is Laplacian Matrix, V as the vertices in Mesh, d is the differential coordinates The Laplacian Matrix is computes as a: Lij = sum(Wij) (if i == j) Lij = Wij (if i != j) Wij is weight between vertex Vi and vertex Vj, we use cotangent weight

The Differential Coordinate is computes as a: di = Vi * sum(Wij) - sum(Wij * Vj) Where: di is the Differential Coordinate i sum (Wij) is the sum of all weights between vertex Vi and its vertices neighbors (Vj). sum (Wij * Vj) is the sum of the product between vertex neighbor Vj and weight Wij for all neighborhood.

This Laplacian Matrix is described in the paper: Desbrun M. et.al, Implicit fairing of irregular meshes using diffusion and curvature flow, SIGGRAPH '99, page 317-324, New York, USA

The computation of Laplace Beltrami operator on Hybrid Triangle/Quad Meshes is described in the paper: Pinzon A., Romero E., Shape Inflation With an Adapted Laplacian Operator For Hybrid Quad/Triangle Meshes, Conference on Graphics Patterns and Images, SIBGRAPI, 2013

The computation of Differential Coordinates is described in the paper: Sorkine, O. Laplacian Surface Editing. Proceedings of the EUROGRAPHICS/ACM SIGGRAPH Symposium on Geometry Processing,