VTK  9.0.1
vtkSobelGradientMagnitudePass.h
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1 /*=========================================================================
2 
3  Program: Visualization Toolkit
4  Module: vtkSobelGradientMagnitudePass.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 =========================================================================*/
60 #ifndef vtkSobelGradientMagnitudePass_h
61 #define vtkSobelGradientMagnitudePass_h
62 
63 #include "vtkImageProcessingPass.h"
64 #include "vtkRenderingOpenGL2Module.h" // For export macro
65 
66 class vtkDepthPeelingPassLayerList; // Pimpl
68 class vtkOpenGLHelper;
70 class vtkTextureObject;
71 
72 class VTKRENDERINGOPENGL2_EXPORT vtkSobelGradientMagnitudePass : public vtkImageProcessingPass
73 {
74 public:
77  void PrintSelf(ostream& os, vtkIndent indent) override;
78 
83  void Render(const vtkRenderState* s) override;
84 
90  void ReleaseGraphicsResources(vtkWindow* w) override;
91 
92 protected:
97 
101  ~vtkSobelGradientMagnitudePass() override;
102 
107  vtkTextureObject* Pass1; // render target for the scene
108  vtkTextureObject* Gx1; // render target 0 for the first shader
109  vtkTextureObject* Gy1; // render target 1 for the first shader
110 
111  // Structures for the various cell types we render.
112  vtkOpenGLHelper* Program1; // shader to compute Gx1 and Gy1
113  vtkOpenGLHelper* Program2; // shader to compute |G| from Gx1 and Gy1
114 
115 private:
117  void operator=(const vtkSobelGradientMagnitudePass&) = delete;
118 };
119 
120 #endif
vtkSobelGradientMagnitudePass::Pass1
vtkTextureObject * Pass1
Definition: vtkSobelGradientMagnitudePass.h:107
vtkImageProcessingPass::PrintSelf
void PrintSelf(ostream &os, vtkIndent indent) override
Methods invoked by print to print information about the object including superclasses.
vtkImageProcessingPass.h
vtkObject::New
static vtkObject * New()
Create an object with Debug turned off, modified time initialized to zero, and reference counting on.
vtkRenderPass::Render
virtual void Render(const vtkRenderState *s)=0
Perform rendering according to a render state s.
vtkOpenGLFramebufferObject
Internal class which encapsulates OpenGL FramebufferObject.
Definition: vtkOpenGLFramebufferObject.h:181
vtkSobelGradientMagnitudePass::Program2
vtkOpenGLHelper * Program2
Definition: vtkSobelGradientMagnitudePass.h:113
vtkImageProcessingPass::ReleaseGraphicsResources
void ReleaseGraphicsResources(vtkWindow *w) override
Release graphics resources and ask components to release their own resources.
vtkSobelGradientMagnitudePass::Gy1
vtkTextureObject * Gy1
Definition: vtkSobelGradientMagnitudePass.h:109
vtkSobelGradientMagnitudePass::Gx1
vtkTextureObject * Gx1
Definition: vtkSobelGradientMagnitudePass.h:108
vtkWindow
window superclass for vtkRenderWindow
Definition: vtkWindow.h:37
vtkOpenGLHelper
Definition: vtkOpenGLHelper.h:30
vtkIndent
a simple class to control print indentation
Definition: vtkIndent.h:33
vtkTextureObject
abstracts an OpenGL texture object.
Definition: vtkTextureObject.h:40
vtkSobelGradientMagnitudePass
Implement a post-processing edge detection with a Sobel gradient magnitude render pass.
Definition: vtkSobelGradientMagnitudePass.h:72
vtkSobelGradientMagnitudePass::FrameBufferObject
vtkOpenGLFramebufferObject * FrameBufferObject
Graphics resources.
Definition: vtkSobelGradientMagnitudePass.h:106
vtkSobelGradientMagnitudePass::Program1
vtkOpenGLHelper * Program1
Definition: vtkSobelGradientMagnitudePass.h:112
vtkOpenGLRenderWindow
OpenGL rendering window.
Definition: vtkOpenGLRenderWindow.h:51
vtkRenderState
Context in which a vtkRenderPass will render.
Definition: vtkRenderState.h:40
vtkImageProcessingPass
Convenient class for post-processing passes. render pass.
Definition: vtkImageProcessingPass.h:38