VTK  9.0.1
vtkSurfaceLICHelper.h
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1 /*=========================================================================
2 
3  Program: Visualization Toolkit
4 
5  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
6  All rights reserved.
7  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
8 
9  This software is distributed WITHOUT ANY WARRANTY; without even
10  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
11  PURPOSE. See the above copyright notice for more information.
12 
13 =========================================================================*/
20 #ifndef vtkSurfaceLICHelper_h
21 #define vtkSurfaceLICHelper_h
22 #ifndef __VTK_WRAP__
23 
24 #include "vtkOpenGLHelper.h"
25 #include "vtkPixelExtent.h"
26 #include "vtkRenderingLICOpenGL2Module.h" // for export
27 #include "vtkSmartPointer.h"
28 #include "vtkTextureObject.h"
29 #include "vtkWeakPointer.h"
30 #include "vtk_glew.h"
31 
32 #include <deque> // for methods
33 
37 class vtkImageData;
40 class vtkRenderer;
41 class vtkActor;
42 class vtkDataObject;
43 
45 {
46 public:
49 
53  static bool IsSupported(vtkOpenGLRenderWindow* context);
54 
59 
63  void ClearTextures();
64 
68  void AllocateTextures(vtkOpenGLRenderWindow* context, int* viewsize);
69 
73  void AllocateTexture(vtkOpenGLRenderWindow* context, int* viewsize,
75 
80  vtkOpenGLRenderWindow* context, int* viewsize, vtkSmartPointer<vtkTextureObject>& tex);
81 
85  void Updated();
86 
91  void UpdateAll();
92 
94 
97  void ViewportQuadTextureCoords(GLfloat* tcoords)
98  {
99  tcoords[0] = tcoords[2] = 0.0f;
100  tcoords[1] = tcoords[3] = 1.0f;
101  }
103 
108  void ViewportQuadPoints(const vtkPixelExtent& viewportExt, GLfloat* quadpts)
109  {
110  viewportExt.GetData(quadpts);
111  }
112 
118  const vtkPixelExtent& viewExt, const vtkPixelExtent& viewportExt, GLfloat* tcoords);
119 
121 
125  void ViewQuadPoints(GLfloat* quadpts)
126  {
127  quadpts[0] = quadpts[2] = 0.0f;
128  quadpts[1] = quadpts[3] = 1.0f;
129  }
131 
133 
137  void ViewQuadTextureCoords(GLfloat* tcoords)
138  {
139  tcoords[0] = tcoords[2] = 0.0f;
140  tcoords[1] = tcoords[3] = 1.0f;
141  }
143 
147  void RenderQuad(
148  const vtkPixelExtent& viewExt, const vtkPixelExtent& viewportExt, vtkOpenGLHelper* cbo);
149 
153  inline int idx(int row, int col) { return 4 * col + row; }
154 
165  bool VisibilityTest(double ndcBBox[24]);
166 
175  bool ProjectBounds(double PMV[16], int viewsize[2], double bounds[6], vtkPixelExtent& screenExt);
176 
182  int ProjectBounds(vtkRenderer* ren, vtkActor* actor, vtkDataObject* dobj, int viewsize[2],
183  vtkPixelExtent& dataExt, std::deque<vtkPixelExtent>& blockExts);
184 
188  void GetPixelBounds(float* rgba, int ni, vtkPixelExtent& ext);
189 
194  void GetPixelBounds(float* rgba, int ni, std::deque<vtkPixelExtent>& blockExts);
195 
196  static void StreamingFindMinMax(
197  vtkOpenGLFramebufferObject* fbo, std::deque<vtkPixelExtent>& blockExts, float& min, float& max);
198 
210 
212  std::deque<vtkPixelExtent> BlockExts;
213 
217 
218  int Viewsize[2];
221 
225 
227 
230 
231 protected:
232 };
233 
234 #endif
235 #endif
236 // VTK-HeaderTest-Exclude: vtkSurfaceLICHelper.h
OpenGL rendering window.
vtkSmartPointer< vtkLineIntegralConvolution2D > LICer
void ViewQuadPoints(GLfloat *quadpts)
Convert the entire view to a bounding box and it&#39;s texture coordinates for a screen size texture...
represents an object (geometry & properties) in a rendered scene
Definition: vtkActor.h:45
void AllocateTexture(vtkOpenGLRenderWindow *context, int *viewsize, vtkSmartPointer< vtkTextureObject > &tex, int filter=vtkTextureObject::Nearest)
Allocate a size texture, store in the given smart pointer.
vtkSmartPointer< vtkTextureObject > HSLColorImage
void ReleaseGraphicsResources(vtkWindow *win)
Free textures and shader programs we&#39;re holding a reference to.
vtkSmartPointer< vtkTextureObject > MaskVectorImage
void ViewportQuadPoints(const vtkPixelExtent &viewportExt, GLfloat *quadpts)
Convert a viewport to a bounding box and it&#39;s texture coordinates for a screen size texture...
void ClearTextures()
Free textures we&#39;re holding a reference to.
static void StreamingFindMinMax(vtkOpenGLFramebufferObject *fbo, std::deque< vtkPixelExtent > &blockExts, float &min, float &max)
vtkSmartPointer< vtkTextureObject > RGBColorImage
vtkOpenGLHelper * ColorPass
std::deque< vtkPixelExtent > BlockExts
abstract specification for renderers
Definition: vtkRenderer.h:67
void AllocateTextures(vtkOpenGLRenderWindow *context, int *viewsize)
Allocate textures.
vtkSmartPointer< vtkOpenGLFramebufferObject > FBO
int * GetData()
Direct access to internal data.
GPU-based implementation of Line Integral Convolution (LIC)
vtkSmartPointer< vtkSurfaceLICComposite > Compositor
vtkWeakPointer< vtkOpenGLRenderWindow > Context
vtkSmartPointer< vtkTextureObject > CompositeVectorImage
static bool IsSupported(vtkOpenGLRenderWindow *context)
Check for OpenGL support.
window superclass for vtkRenderWindow
Definition: vtkWindow.h:37
vtkSmartPointer< vtkTextureObject > VectorImage
vtkSmartPointer< vtkTextureObject > GeometryImage
bool VisibilityTest(double ndcBBox[24])
given a axes aligned bounding box in normalized device coordinates test for view frustum visibility...
vtkPainterCommunicator * Communicator
topologically and geometrically regular array of data
Definition: vtkImageData.h:41
void UpdateAll()
Force all stages to re-execute.
void ViewQuadTextureCoords(GLfloat *tcoords)
Convert the entire view to a bounding box and it&#39;s texture coordinates for a screen size texture...
void Updated()
After LIC has been computed reset/clean internal state.
void RenderQuad(const vtkPixelExtent &viewExt, const vtkPixelExtent &viewportExt, vtkOpenGLHelper *cbo)
Render a quad (to trigger a shader to run)
vtkSmartPointer< vtkTextureObject > NoiseImage
vtkSmartPointer< vtkTextureObject > LICImage
void GetPixelBounds(float *rgba, int ni, vtkPixelExtent &ext)
Shrink an extent to tightly bound non-zero values.
Internal class which encapsulates OpenGL FramebufferObject.
vtkOpenGLHelper * CopyPass
Representation of a cartesian pixel plane and common operations on it.
void ViewportQuadTextureCoords(GLfloat *tcoords)
Convert viewport to texture coordinates.
A communicator that can safely be used inside a painter.
This class decomposes the image space and shuffles image space data onto the new decomposition with t...
vtkOpenGLHelper * ColorEnhancePass
int idx(int row, int col)
Compute the index into the 4x4 OpenGL ordered matrix.
general representation of visualization data
Definition: vtkDataObject.h:59
vtkSmartPointer< vtkTextureObject > CompositeMaskVectorImage
bool ProjectBounds(double PMV[16], int viewsize[2], double bounds[6], vtkPixelExtent &screenExt)
Given world space bounds, compute bounding boxes in clip and normalized device coordinates and perfor...
A small collection of noise routines for LIC.
#define max(a, b)
vtkSmartPointer< vtkTextureObject > DepthImage
void AllocateDepthTexture(vtkOpenGLRenderWindow *context, int *viewsize, vtkSmartPointer< vtkTextureObject > &tex)
Allocate a size texture, store in the given smart pointer.
vtkSmartPointer< vtkImageData > Noise