VTK  9.2.6
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=========================================================================*/
19#ifndef vtkSurfaceLICHelper_h
20#define vtkSurfaceLICHelper_h
21
22#include "vtkOpenGLHelper.h"
23#include "vtkPixelExtent.h"
24#include "vtkRenderingLICOpenGL2Module.h" // for export
25#include "vtkSmartPointer.h"
26#include "vtkTextureObject.h"
27#include "vtkWeakPointer.h"
28#include "vtk_glew.h"
29
30#include <deque> // for methods
31
35class vtkImageData;
38class vtkRenderer;
39class vtkActor;
40class vtkDataObject;
41
43{
44public:
47
51 static bool IsSupported(vtkOpenGLRenderWindow* context);
52
57
62
66 void AllocateTextures(vtkOpenGLRenderWindow* context, int* viewsize);
67
71 void AllocateTexture(vtkOpenGLRenderWindow* context, int* viewsize,
73
78 vtkOpenGLRenderWindow* context, int* viewsize, vtkSmartPointer<vtkTextureObject>& tex);
79
83 void Updated();
84
89 void UpdateAll();
90
92
95 void ViewportQuadTextureCoords(GLfloat* tcoords)
96 {
97 tcoords[0] = tcoords[2] = 0.0f;
98 tcoords[1] = tcoords[3] = 1.0f;
99 }
101
106 void ViewportQuadPoints(const vtkPixelExtent& viewportExt, GLfloat* quadpts)
107 {
108 viewportExt.GetData(quadpts);
109 }
110
116 const vtkPixelExtent& viewExt, const vtkPixelExtent& viewportExt, GLfloat* tcoords);
117
119
123 void ViewQuadPoints(GLfloat* quadpts)
124 {
125 quadpts[0] = quadpts[2] = 0.0f;
126 quadpts[1] = quadpts[3] = 1.0f;
127 }
129
131
135 void ViewQuadTextureCoords(GLfloat* tcoords)
136 {
137 tcoords[0] = tcoords[2] = 0.0f;
138 tcoords[1] = tcoords[3] = 1.0f;
139 }
141
146 const vtkPixelExtent& viewExt, const vtkPixelExtent& viewportExt, vtkOpenGLHelper* cbo);
147
151 inline int idx(int row, int col) { return 4 * col + row; }
152
163 bool VisibilityTest(double ndcBBox[24]);
164
173 bool ProjectBounds(double PMV[16], int viewsize[2], double bounds[6], vtkPixelExtent& screenExt);
174
180 int ProjectBounds(vtkRenderer* ren, vtkActor* actor, vtkDataObject* dobj, int viewsize[2],
181 vtkPixelExtent& dataExt, std::deque<vtkPixelExtent>& blockExts);
182
186 void GetPixelBounds(float* rgba, int ni, vtkPixelExtent& ext);
187
192 void GetPixelBounds(float* rgba, int ni, std::deque<vtkPixelExtent>& blockExts);
193
195 vtkOpenGLFramebufferObject* fbo, std::deque<vtkPixelExtent>& blockExts, float& min, float& max);
196
208
210 std::deque<vtkPixelExtent> BlockExts;
211
215
216 int Viewsize[2];
219
223
225
228
229protected:
230};
231
232#endif
233// VTK-HeaderTest-Exclude: vtkSurfaceLICHelper.h
represents an object (geometry & properties) in a rendered scene
Definition vtkActor.h:52
general representation of visualization data
topologically and geometrically regular array of data
GPU-based implementation of Line Integral Convolution (LIC)
Internal class which encapsulates OpenGL FramebufferObject.
OpenGL rendering window.
A communicator that can safely be used inside a painter.
Representation of a cartesian pixel plane and common operations on it.
int * GetData()
Direct access to internal data.
abstract specification for renderers
Definition vtkRenderer.h:73
Hold a reference to a vtkObjectBase instance.
This class decomposes the image space and shuffles image space data onto the new decomposition with t...
A small collection of noise routines for LIC.
void AllocateTextures(vtkOpenGLRenderWindow *context, int *viewsize)
Allocate textures.
int ProjectBounds(vtkRenderer *ren, vtkActor *actor, vtkDataObject *dobj, int viewsize[2], vtkPixelExtent &dataExt, std::deque< vtkPixelExtent > &blockExts)
Compute screen space extents for each block in the input dataset and for the entire dataset.
void Updated()
After LIC has been computed reset/clean internal state.
void AllocateDepthTexture(vtkOpenGLRenderWindow *context, int *viewsize, vtkSmartPointer< vtkTextureObject > &tex)
Allocate a size texture, store in the given smart pointer.
vtkOpenGLHelper * ColorPass
void ReleaseGraphicsResources(vtkWindow *win)
Free textures and shader programs we're holding a reference to.
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...
vtkSmartPointer< vtkSurfaceLICComposite > Compositor
vtkSmartPointer< vtkTextureObject > RGBColorImage
vtkSmartPointer< vtkTextureObject > MaskVectorImage
static bool IsSupported(vtkOpenGLRenderWindow *context)
Check for OpenGL support.
vtkSmartPointer< vtkTextureObject > LICImage
void ViewQuadTextureCoords(GLfloat *tcoords)
Convert the entire view to a bounding box and it's texture coordinates for a screen size texture.
vtkWeakPointer< vtkOpenGLRenderWindow > Context
vtkSmartPointer< vtkImageData > Noise
int idx(int row, int col)
Compute the index into the 4x4 OpenGL ordered matrix.
std::deque< vtkPixelExtent > BlockExts
void ViewportQuadPoints(const vtkPixelExtent &viewportExt, GLfloat *quadpts)
Convert a viewport to a bounding box and it's texture coordinates for a screen size texture.
void ClearTextures()
Free textures we're holding a reference to.
void ViewportQuadTextureCoords(GLfloat *tcoords)
Convert viewport to texture coordinates.
vtkSmartPointer< vtkLineIntegralConvolution2D > LICer
vtkSmartPointer< vtkTextureObject > HSLColorImage
void GetPixelBounds(float *rgba, int ni, vtkPixelExtent &ext)
Shrink an extent to tightly bound non-zero values.
void AllocateTexture(vtkOpenGLRenderWindow *context, int *viewsize, vtkSmartPointer< vtkTextureObject > &tex, int filter=vtkTextureObject::Nearest)
Allocate a size texture, store in the given smart pointer.
vtkOpenGLHelper * ColorEnhancePass
vtkSmartPointer< vtkOpenGLFramebufferObject > FBO
vtkSmartPointer< vtkTextureObject > CompositeMaskVectorImage
void GetPixelBounds(float *rgba, int ni, std::deque< vtkPixelExtent > &blockExts)
Shrink a set of extents to tightly bound non-zero values cull extent if it's empty.
vtkSmartPointer< vtkTextureObject > NoiseImage
vtkOpenGLHelper * CopyPass
void RenderQuad(const vtkPixelExtent &viewExt, const vtkPixelExtent &viewportExt, vtkOpenGLHelper *cbo)
Render a quad (to trigger a shader to run)
vtkSmartPointer< vtkTextureObject > VectorImage
static void StreamingFindMinMax(vtkOpenGLFramebufferObject *fbo, std::deque< vtkPixelExtent > &blockExts, float &min, float &max)
void ViewportQuadTextureCoords(const vtkPixelExtent &viewExt, const vtkPixelExtent &viewportExt, GLfloat *tcoords)
Convert a viewport to a bounding box and it's texture coordinates for a screen size texture.
void UpdateAll()
Force all stages to re-execute.
vtkSmartPointer< vtkTextureObject > DepthImage
vtkPainterCommunicator * Communicator
void ViewQuadPoints(GLfloat *quadpts)
Convert the entire view to a bounding box and it's texture coordinates for a screen size texture.
vtkSmartPointer< vtkTextureObject > CompositeVectorImage
vtkSmartPointer< vtkTextureObject > GeometryImage
bool VisibilityTest(double ndcBBox[24])
given a axes aligned bounding box in normalized device coordinates test for view frustum visibility.
a weak reference to a vtkObject.
window superclass for vtkRenderWindow
Definition vtkWindow.h:39
#define max(a, b)