/usr/include/vtk-7.1/vtkAbstractContextBufferId.h is in libvtk7-dev 7.1.1+dfsg1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 | /*=========================================================================
Program: Visualization Toolkit
Module: vtkAbstractContextBufferId.h
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.
=========================================================================*/
/**
* @class vtkAbstractContextBufferId
* @brief 2D array of ids, used for picking.
*
*
* An 2D array where each element is the id of an entity drawn at the given
* pixel. The access is not specified in this class.
* The effective/concrete subclass vtkContextBufferId stores the whole buffer
* in RAM. The access to a value is fast and independent of the OpenGL.
* However it requires to first fill the whole buffer by transferring the
* buffer generated by OpenGL from the VRAM to the RAM. It is inefficient if
* the context of the scene changes during interaction.
*
* The effective/concrete subclass vtkOpenGLContextBufferId keeps the buffer id
* on the VRAM in a texture image. The access to a value is slower than a
* simple read access to an array but it does not require a large transfer of
* data from the VRAM to the RAM.
*
* @sa
* vtkContextBufferId, vtkOpenGLContextBufferId
*/
#ifndef vtkAbstractContextBufferId_h
#define vtkAbstractContextBufferId_h
#include "vtkRenderingContext2DModule.h" // For export macro
#include "vtkObject.h"
class vtkRenderWindow;
class VTKRENDERINGCONTEXT2D_EXPORT vtkAbstractContextBufferId : public vtkObject
{
public:
vtkTypeMacro(vtkAbstractContextBufferId, vtkObject);
virtual void PrintSelf(ostream &os, vtkIndent indent);
static vtkAbstractContextBufferId * New();
//@{
/**
* Number of columns. Initial value is 0.
*/
vtkGetMacro(Width,int);
//@}
//@{
/**
* Set the number of columns. Initial value is 0.
*/
vtkSetMacro(Width,int);
//@}
//@{
/**
* Number of rows. Initial value is 0.
*/
vtkGetMacro(Height,int);
//@}
//@{
/**
* Set the number of rows. Initial value is 0.
*/
vtkSetMacro(Height,int);
//@}
//@{
/**
* Set/Get the OpenGL context owning the texture object resource.
*/
virtual void SetContext(vtkRenderWindow *context) = 0;
virtual vtkRenderWindow *GetContext() = 0;
//@}
/**
* Returns if the context supports the required extensions.
* \pre context_is_set: this->GetContext()!=0
*/
virtual bool IsSupported() = 0;
/**
* Allocate the memory for at least Width*Height elements.
* \pre positive_width: GetWidth()>0
* \pre positive_height: GetHeight()>0
*/
virtual void Allocate()=0;
/**
* Tell if the buffer has been allocated.
*/
virtual bool IsAllocated() const=0;
/**
* Copy the contents of the current read buffer to the internal structure
* starting at lower left corner of the framebuffer (srcXmin,srcYmin).
* \pre is_allocated: this->IsAllocated()
*/
virtual void SetValues(int srcXmin,
int srcYmin)=0;
/**
* Return item under abscissa x and ordinate y.
* Abscissa go from left to right.
* Ordinate go from bottom to top.
* The return value is -1 if there is no item.
* \pre is_allocated: IsAllocated()
* \post valid_result: result>=-1
*/
virtual vtkIdType GetPickedItem(int x, int y)=0;
/**
* Release any graphics resources that are being consumed by this object.
* Default implementation is empty.
*/
virtual void ReleaseGraphicsResources();
protected:
vtkAbstractContextBufferId();
virtual ~vtkAbstractContextBufferId();
int Width;
int Height;
private:
vtkAbstractContextBufferId(const vtkAbstractContextBufferId &) VTK_DELETE_FUNCTION;
void operator=(const vtkAbstractContextBufferId &) VTK_DELETE_FUNCTION;
};
#endif // #ifndef vtkAbstractContextBufferId_h
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