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
|
/*=========================================================================
Program: Visualization Toolkit
Module: vtkContextItem.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 vtkContextClip
* @brief all children of this item are clipped
* by the specified area.
*
*
* This class can be used to clip the rendering of an item inside a rectangular
* area.
*/
#ifndef vtkContextClip_h
#define vtkContextClip_h
#include "vtkAbstractContextItem.h"
#include "vtkRenderingContext2DModule.h" // For export macro
#include "vtkSmartPointer.h" // Needed for SP ivars.
VTK_ABI_NAMESPACE_BEGIN
class VTKRENDERINGCONTEXT2D_EXPORT vtkContextClip : public vtkAbstractContextItem
{
public:
vtkTypeMacro(vtkContextClip, vtkAbstractContextItem);
void PrintSelf(ostream& os, vtkIndent indent) override;
/**
* Creates a vtkContextClip object.
*/
static vtkContextClip* New();
/**
* Perform any updates to the item that may be necessary before rendering.
* The scene should take care of calling this on all items before their
* Paint function is invoked.
*/
void Update() override;
/**
* Paint event for the item, called whenever the item needs to be drawn.
*/
bool Paint(vtkContext2D* painter) override;
/**
* Set the origin, width and height of the clipping rectangle. These are in
* pixel coordinates.
*/
virtual void SetClip(float x, float y, float width, float height);
/**
* Get the clipping rectangle parameters in pixel coordinates:
*/
virtual void GetRect(float rect[4]);
virtual float GetX() { return Dims[0]; }
virtual float GetY() { return Dims[1]; }
virtual float GetWidth() { return Dims[2]; }
virtual float GetHeight() { return Dims[3]; }
protected:
vtkContextClip();
~vtkContextClip() override;
float Dims[4];
private:
vtkContextClip(const vtkContextClip&) = delete;
void operator=(const vtkContextClip&) = delete;
};
inline void vtkContextClip::GetRect(float rect[4])
{
rect[0] = this->Dims[0];
rect[1] = this->Dims[1];
rect[2] = this->Dims[2];
rect[3] = this->Dims[3];
}
VTK_ABI_NAMESPACE_END
#endif // vtkContextClip_h
|
