VTK
vtkSphericalDirectionEncoder.h
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1 /*=========================================================================
2 
3  Program: Visualization Toolkit
4  Module: vtkSphericalDirectionEncoder.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 =========================================================================*/
26 #ifndef vtkSphericalDirectionEncoder_h
27 #define vtkSphericalDirectionEncoder_h
28 
29 #include "vtkRenderingVolumeModule.h" // For export macro
30 #include "vtkDirectionEncoder.h"
31 
32 class VTKRENDERINGVOLUME_EXPORT vtkSphericalDirectionEncoder : public vtkDirectionEncoder
33 {
34 public:
36  void PrintSelf( ostream& os, vtkIndent indent );
37 
44 
45 
49  int GetEncodedDirection( float n[3] );
50 
54  float *GetDecodedGradient( int value );
55 
59  int GetNumberOfEncodedDirections( void ) { return 65536; }
60 
67  float *GetDecodedGradientTable( void )
68  {
69  return &(this->DecodedGradientTable[0]);
70  }
71 
72 
73 protected:
76 
77  static float DecodedGradientTable[65536*3];
78 
80 
86 
87 private:
89  void operator=(const vtkSphericalDirectionEncoder&) VTK_DELETE_FUNCTION;
90 };
91 
92 
93 #endif
94 
95 
encode a direction into a one or two byte value
a simple class to control print indentation
Definition: vtkIndent.h:40
A direction encoder based on spherical coordinates.
static vtkSphericalDirectionEncoder * New()
Construct the object.
int GetNumberOfEncodedDirections(void)
Return the number of encoded directions.
void PrintSelf(ostream &os, vtkIndent indent)
Methods invoked by print to print information about the object including superclasses.
float * GetDecodedGradientTable(void)
Get the decoded gradient table.
static void InitializeDecodedGradientTable()
Initialize the table at startup.
float * GetDecodedGradient(int value)
/ Given an encoded value, return a pointer to the normal vector
int GetEncodedDirection(float n[3])
Given a normal vector n, return the encoded direction.
@ value
Definition: vtkX3D.h:220