VTK  9.2.6
vtkOBBTree.h
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1/*=========================================================================
2
3 Program: Visualization Toolkit
4 Module: vtkOBBTree.h
5
6 Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
7 All rights reserved.
8 See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
9
10 This software is distributed WITHOUT ANY WARRANTY; without even
11 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
12 PURPOSE. See the above copyright notice for more information.
13
14=========================================================================*/
66#ifndef vtkOBBTree_h
67#define vtkOBBTree_h
68
70#include "vtkFiltersGeneralModule.h" // For export macro
71
72class vtkMatrix4x4;
73
74// Special class defines node for the OBB tree
75class VTKFILTERSGENERAL_EXPORT vtkOBBNode
76{ //;prevent man page generation
77public:
80
81 double Corner[3]; // center point of this node
82 double Axes[3][3]; // the axes defining the OBB - ordered from long->short
83 vtkOBBNode* Parent; // parent node; nullptr if root
84 vtkOBBNode** Kids; // two children of this node; nullptr if leaf
85 vtkIdList* Cells; // list of cells in node
86 void DebugPrintTree(int level, double* leaf_vol, int* minCells, int* maxCells);
87
88private:
89 vtkOBBNode(const vtkOBBNode& other) = delete;
90 vtkOBBNode& operator=(const vtkOBBNode& rhs) = delete;
91};
92
93class VTKFILTERSGENERAL_EXPORT vtkOBBTree : public vtkAbstractCellLocator
94{
95public:
97
101 void PrintSelf(ostream& os, vtkIndent indent) override;
103
108 static vtkOBBTree* New();
109
110 // Re-use any superclass signatures that we don't override.
112
119 int IntersectWithLine(const double a0[3], const double a1[3], double tol, double& t, double x[3],
120 double pcoords[3], int& subId, vtkIdType& cellId, vtkGenericCell* cell) override;
121
134 const double a0[3], const double a1[3], vtkPoints* points, vtkIdList* cellIds) override;
135
141 static void ComputeOBB(
142 vtkPoints* pts, double corner[3], double max[3], double mid[3], double min[3], double size[3]);
143
150 void ComputeOBB(vtkDataSet* input, double corner[3], double max[3], double mid[3], double min[3],
151 double size[3]);
152
158 int InsideOrOutside(const double point[3]);
159
164 int DisjointOBBNodes(vtkOBBNode* nodeA, vtkOBBNode* nodeB, vtkMatrix4x4* XformBtoA);
165
169 int LineIntersectsNode(vtkOBBNode* pA, const double b0[3], const double b1[3]);
170
175 vtkOBBNode* pA, double p0[3], double p1[3], double p2[3], vtkMatrix4x4* XformBtoA);
176
182 int (*function)(vtkOBBNode* nodeA, vtkOBBNode* nodeB, vtkMatrix4x4* Xform, void* arg),
183 void* data_arg);
184
186
189 void FreeSearchStructure() override;
190 void BuildLocator() override;
191 void ForceBuildLocator() override;
193
203 void GenerateRepresentation(int level, vtkPolyData* pd) override;
204
205protected:
207 ~vtkOBBTree() override;
208
209 void BuildLocatorInternal() override;
210
211 // Compute an OBB from the list of cells given. This used to be
212 // public but should not have been. A public call has been added
213 // so that the functionality can be accessed.
214 void ComputeOBB(vtkIdList* cells, double corner[3], double max[3], double mid[3], double min[3],
215 double size[3]);
216
218 void BuildTree(vtkIdList* cells, vtkOBBNode* parent, int level);
222
223 void DeleteTree(vtkOBBNode* OBBptr);
225 vtkOBBNode* OBBptr, int level, int repLevel, vtkPoints* pts, vtkCellArray* polys);
226
227private:
228 vtkOBBTree(const vtkOBBTree&) = delete;
229 void operator=(const vtkOBBTree&) = delete;
230};
231
232#endif
an abstract base class for locators which find cells
virtual int IntersectWithLine(const double p1[3], const double p2[3], double tol, double &t, double x[3], double pcoords[3], int &subId)
Return intersection point (if any) of finite line with cells contained in cell locator.
object to represent cell connectivity
abstract class to specify dataset behavior
Definition vtkDataSet.h:57
provides thread-safe access to cells
list of point or cell ids
Definition vtkIdList.h:31
a simple class to control print indentation
Definition vtkIndent.h:34
represent and manipulate 4x4 transformation matrices
vtkOBBNode * Parent
Definition vtkOBBTree.h:83
vtkIdList * Cells
Definition vtkOBBTree.h:85
void DebugPrintTree(int level, double *leaf_vol, int *minCells, int *maxCells)
vtkOBBNode ** Kids
Definition vtkOBBTree.h:84
generate oriented bounding box (OBB) tree
Definition vtkOBBTree.h:94
void ComputeOBB(vtkDataSet *input, double corner[3], double max[3], double mid[3], double min[3], double size[3])
Compute an OBB for the input dataset using the cells in the data.
void BuildLocator() override
Satisfy locator's abstract interface, see vtkLocator.
void FreeSearchStructure() override
Satisfy locator's abstract interface, see vtkLocator.
int IntersectWithLine(const double a0[3], const double a1[3], double tol, double &t, double x[3], double pcoords[3], int &subId, vtkIdType &cellId, vtkGenericCell *cell) override
Return the first intersection of the specified line segment with the OBB tree, as well as information...
int DisjointOBBNodes(vtkOBBNode *nodeA, vtkOBBNode *nodeB, vtkMatrix4x4 *XformBtoA)
Returns true if nodeB and nodeA are disjoint after optional transformation of nodeB with matrix Xform...
int InsideOrOutside(const double point[3])
Determine whether a point is inside or outside the data used to build this OBB tree.
void GenerateRepresentation(int level, vtkPolyData *pd) override
Create polygonal representation for OBB tree at specified level.
void GeneratePolygons(vtkOBBNode *OBBptr, int level, int repLevel, vtkPoints *pts, vtkCellArray *polys)
~vtkOBBTree() override
vtkOBBNode * Tree
Definition vtkOBBTree.h:217
void PrintSelf(ostream &os, vtkIndent indent) override
Standard methods to print and obtain type-related information.
void BuildLocatorInternal() override
This function is not pure virtual to maintain backwards compatibility.
int LineIntersectsNode(vtkOBBNode *pA, const double b0[3], const double b1[3])
Returns true if line intersects node.
static vtkOBBTree * New()
Construct with automatic computation of divisions, averaging 25 cells per octant.
void ComputeOBB(vtkIdList *cells, double corner[3], double max[3], double mid[3], double min[3], double size[3])
vtkPoints * PointsList
Definition vtkOBBTree.h:219
int IntersectWithLine(const double a0[3], const double a1[3], vtkPoints *points, vtkIdList *cellIds) override
Take the passed line segment and intersect it with the data set.
int IntersectWithOBBTree(vtkOBBTree *OBBTreeB, vtkMatrix4x4 *XformBtoA, int(*function)(vtkOBBNode *nodeA, vtkOBBNode *nodeB, vtkMatrix4x4 *Xform, void *arg), void *data_arg)
For each intersecting leaf node pair, call function.
int TriangleIntersectsNode(vtkOBBNode *pA, double p0[3], double p1[3], double p2[3], vtkMatrix4x4 *XformBtoA)
Returns true if triangle (optionally transformed) intersects node.
int * InsertedPoints
Definition vtkOBBTree.h:220
void ForceBuildLocator() override
Satisfy locator's abstract interface, see vtkLocator.
void DeleteTree(vtkOBBNode *OBBptr)
static void ComputeOBB(vtkPoints *pts, double corner[3], double max[3], double mid[3], double min[3], double size[3])
Compute an OBB from the list of points given.
void BuildTree(vtkIdList *cells, vtkOBBNode *parent, int level)
represent and manipulate 3D points
Definition vtkPoints.h:34
concrete dataset represents vertices, lines, polygons, and triangle strips
Definition vtkPolyData.h:85
int vtkIdType
Definition vtkType.h:332
#define max(a, b)