1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
/*=========================================================================
Program: Visualization Toolkit
Module: $RCSfile: vtkBox.h,v $
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
// .NAME vtkBox - implicit function for a bounding box
// .SECTION Description
// vtkBox computes the implicit function and/or gradient for a axis-aligned
// bounding box. (The superclasses transform can be used to modify this
// orientation.) Each side of the box is orthogonal to all other sides
// meeting along shared edges and all faces are orthogonal to the x-y-z
// coordinate axes. (If you wish to orient this box differently, recall that
// the superclass vtkImplicitFunction supports a transformation matrix.)
// vtkCube is a concrete implementation of vtkImplicitFunction.
//
// .SECTION See Also
// vtkCubeSource vtkImplicitFunction
#ifndef __vtkBox_h
#define __vtkBox_h
#include "vtkImplicitFunction.h"
class vtkBoundingBox;
class VTK_COMMON_EXPORT vtkBox : public vtkImplicitFunction
{
public:
vtkTypeRevisionMacro(vtkBox,vtkImplicitFunction);
void PrintSelf(ostream& os, vtkIndent indent);
// Description
// Construct box with center at (0,0,0) and each side of length 1.0.
static vtkBox *New();
// Description
// Evaluate box defined by the two points (pMin,pMax).
double EvaluateFunction(double x[3]);
double EvaluateFunction(double x, double y, double z)
{return this->vtkImplicitFunction::EvaluateFunction(x, y, z); }
// Description
// Evaluate the gradient of the box.
void EvaluateGradient(double x[3], double n[3]);
// Description:
// Set / get the bounding box using various methods.
void SetXMin(double p[3]);
void SetXMin(double x, double y, double z);
void GetXMin(double p[3]);
void GetXMin(double &x, double &y, double &z);
void SetXMax(double p[3]);
void SetXMax(double x, double y, double z);
void GetXMax(double p[3]);
void GetXMax(double &x, double &y, double &z);
void SetBounds(double xMin, double xMax,
double yMin, double yMax,
double zMin, double zMax);
void SetBounds(double bounds[6]);
void GetBounds(double &xMin, double &xMax,
double &yMin, double &yMax,
double &zMin, double &zMax);
void GetBounds(double bounds[6]);
double *GetBounds();
// Description:
// A special method that allows union set operation on bounding boxes.
// Start with a SetBounds(). Subsequent AddBounds() methods are union set
// operations on the original bounds. Retrieve the final bounds with a
// GetBounds() method.
void AddBounds(double bounds[6]);
// Description:
// Bounding box intersection modified from Graphics Gems Vol I. The method
// returns a non-zero value if the bounding box is hit. Origin[3] starts
// the ray, dir[3] is the vector components of the ray in the x-y-z
// directions, coord[3] is the location of hit, and t is the parametric
// coordinate along line. (Notes: the intersection ray dir[3] is NOT
// normalized. Valid intersections will only occur between 0<=t<=1.)
static char IntersectBox(double bounds[6], double origin[3], double dir[3],
double coord[3], double& t);
protected:
vtkBox();
~vtkBox();
vtkBoundingBox *BBox;
double Bounds[6]; //supports the GetBounds() method
private:
vtkBox(const vtkBox&); // Not implemented.
void operator=(const vtkBox&); // Not implemented.
};
inline void vtkBox::SetXMin(double p[3])
{
this->SetXMin(p[0], p[1], p[2]);
}
inline void vtkBox::SetXMax(double p[3])
{
this->SetXMax(p[0], p[1], p[2]);
}
#endif
|
