[346] | 1 | /* osgVisual test. distortionNG, experimental. |
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| 2 | * |
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| 3 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
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| 4 | * of this software and associated documentation files (the "Software"), to deal |
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| 5 | * in the Software without restriction, including without limitation the rights |
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| 6 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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| 7 | * copies of the Software, and to permit persons to whom the Software is |
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| 8 | * furnished to do so, subject to the following conditions: |
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| 9 | * |
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| 10 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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| 11 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 12 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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| 13 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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| 14 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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| 15 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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| 16 | * THE SOFTWARE. |
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| 17 | */ |
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| 18 | |
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[310] | 19 | #include "extViewer.h" |
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[329] | 20 | #include "distortionNG.h" |
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[310] | 21 | |
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[329] | 22 | #include <osg/PolygonOffset> |
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[334] | 23 | #include <osg/Texture2D> |
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| 24 | #include <osg/TextureRectangle> |
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| 25 | #include <osg/TexMat> |
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| 26 | #include <osg/ComputeBoundsVisitor> |
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| 27 | #include <osg/Vec2> |
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[313] | 28 | |
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[334] | 29 | #include <osgDB/ReadFile> |
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| 30 | #include <osgDB/FileUtils> |
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[313] | 31 | |
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| 32 | #include <osgUtil/SmoothingVisitor> |
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| 33 | |
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[346] | 34 | #include "DistortionManipulator.h" |
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| 35 | |
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[311] | 36 | extViewer::extViewer() : Viewer() |
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[310] | 37 | { |
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| 38 | } |
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| 39 | |
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[311] | 40 | extViewer::extViewer(osg::ArgumentParser& arguments) : Viewer(arguments) |
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[310] | 41 | { |
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[346] | 42 | // Add help for command-line options here |
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[342] | 43 | arguments.getApplicationUsage()->addCommandLineOption("--distort","load distortion file and set up geometrical distortion for viewer. This includes blending"); |
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| 44 | arguments.getApplicationUsage()->addCommandLineOption("--blend","Set up viewer vor simple blending CullDrawThreadPerContext threading model for viewer."); |
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[345] | 45 | |
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| 46 | osgDB::Registry::instance()->addFileExtensionAlias("dist", "osgt"); |
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[310] | 47 | } |
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[311] | 48 | |
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| 49 | extViewer::extViewer(const osgViewer::Viewer& viewer, const osg::CopyOp& copyop) : Viewer(viewer, copyop) |
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| 50 | { |
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| 51 | |
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| 52 | } |
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| 53 | |
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| 54 | extViewer::~extViewer() |
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| 55 | { |
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| 56 | |
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| 57 | } |
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| 58 | |
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[332] | 59 | static osg::Geometry* createMesh(const osg::Vec3& origin, const osg::Vec3& widthVector, const osg::Vec3& heightVector, unsigned int columns, unsigned int rows, osg::Image* intensityMap, bool applyIntensityMapAsColours, const osg::Matrix& projectorMatrix) |
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| 60 | { |
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[331] | 61 | // Create Quad to render on |
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| 62 | osg::ref_ptr<osg::Geometry> geom = new osg::Geometry; |
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| 63 | |
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| 64 | geom->setUseDisplayList( false ); |
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| 65 | |
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| 66 | osg::Vec3 xAxis(widthVector); |
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| 67 | float width = widthVector.length(); |
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| 68 | xAxis /= width; |
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| 69 | |
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| 70 | osg::Vec3 yAxis(heightVector); |
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| 71 | float height = heightVector.length(); |
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| 72 | yAxis /= height; |
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| 73 | |
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| 74 | osg::Vec3 dx = xAxis*(width/((float)(columns-1))); |
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| 75 | osg::Vec3 dy = yAxis*(height/((float)(rows-1))); |
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| 76 | |
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| 77 | |
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| 78 | // Create vertices and coordinates |
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| 79 | osg::Vec3Array* vertices = new osg::Vec3Array; |
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| 80 | osg::Vec2Array* texcoords0 = new osg::Vec2Array; |
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| 81 | osg::Vec2Array* texcoords1 = intensityMap==0 ? new osg::Vec2Array : 0; |
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| 82 | osg::Vec4Array* colors = new osg::Vec4Array; |
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| 83 | |
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| 84 | geom->getOrCreateStateSet()->setMode(GL_CULL_FACE, osg::StateAttribute::OFF | osg::StateAttribute::PROTECTED); |
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| 85 | |
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| 86 | for ( unsigned int row=0; row<rows; row++ ) |
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| 87 | { |
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| 88 | for ( unsigned int col=0; col<columns; col++ ) |
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| 89 | { |
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| 90 | // Create coordinates of the mesh node (geometry). |
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| 91 | vertices->push_back( origin+dy*row+dx*col ); |
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| 92 | |
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| 93 | // Create tex coordinates |
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| 94 | osg::Vec2 texcoord = osg::Vec2((float)col/(float)(columns-1), (float)row/(float)(rows-1)); |
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| 95 | |
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| 96 | // Set Coordinates for RTT-Texture (scene rendering) |
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| 97 | texcoords0->push_back( texcoord ); |
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| 98 | |
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| 99 | // Set Color of the mesh node |
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[332] | 100 | if (intensityMap && applyIntensityMapAsColours) |
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[331] | 101 | { |
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| 102 | colors->push_back(intensityMap->getColor(texcoord)); |
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| 103 | } |
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| 104 | else |
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| 105 | { |
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| 106 | colors->push_back(osg::Vec4(1.0f,1.0f,1.0f,1.0f)); |
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| 107 | } |
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| 108 | |
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| 109 | // Set coordinates for second texcoords array (if applyIntensityMapAsColours==true) |
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[333] | 110 | if (texcoords1) |
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| 111 | texcoords1->push_back( texcoord ); |
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[331] | 112 | } |
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| 113 | } |
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| 114 | |
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| 115 | // Pass the created vertex array to the points geometry object. |
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| 116 | geom->setUseVertexBufferObjects( true ); |
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| 117 | geom->setVertexArray(vertices); |
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| 118 | |
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| 119 | geom->setColorArray(colors); |
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| 120 | geom->setColorBinding(osg::Geometry::BIND_PER_VERTEX); |
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| 121 | |
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| 122 | geom->setTexCoordArray(0,texcoords0); |
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[333] | 123 | if (texcoords1) |
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| 124 | geom->setTexCoordArray(1,texcoords1); |
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[331] | 125 | |
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[340] | 126 | // Quads grid |
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| 127 | for ( unsigned int row=0; row<rows-1; row++ ) // each strip consists of two affected vertex rows, so we need only row-1 strips. |
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| 128 | { |
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[345] | 129 | osg::ref_ptr<osg::DrawElementsUInt> de = new osg::DrawElementsUInt(osg::PrimitiveSet::QUAD_STRIP, columns*2); // columns*2 = number of involved vertices for this strip. |
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[340] | 130 | for ( unsigned int col=0; col<columns; col++ ) |
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| 131 | { |
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| 132 | (*de)[col*2 + 0] = row*columns + col; |
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| 133 | (*de)[col*2 + 1] = (row+1)*columns + col; |
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| 134 | } |
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| 135 | geom->addPrimitiveSet( de.get() ); |
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| 136 | } |
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| 137 | |
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| 138 | //// Triangle grid |
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[339] | 139 | //for ( unsigned int row=0; row<rows-1; row++ ) // each strip consists of two affected vertex rows, so we need only row-1 strips. |
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| 140 | //{ |
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[340] | 141 | // osg::ref_ptr<osg::DrawElementsUInt> de = new osg::DrawElementsUInt(osg::PrimitiveSet::TRIANGLE_STRIP, columns * 2 ); |
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[339] | 142 | // for ( unsigned int col=0; col<columns; col++ ) |
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| 143 | // { |
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| 144 | // (*de)[col*2 + 0] = row*columns + col; |
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| 145 | // (*de)[col*2 + 1] = (row+1)*columns + col; |
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| 146 | // } |
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| 147 | // geom->addPrimitiveSet( de.get() ); |
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| 148 | //} |
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[331] | 149 | |
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| 150 | return geom.release(); |
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| 151 | } |
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| 152 | |
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[350] | 153 | |
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[315] | 154 | void extViewer::setUpViewForManualDistortion(unsigned int screenNum, osg::Image* intensityMap, const osg::Matrixd& projectorMatrix) |
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[311] | 155 | { |
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[350] | 156 | OSG_INFO<<"View::setUpViewForManualDistortion(sn="<<screenNum<<")"<<std::endl; |
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[313] | 157 | |
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[350] | 158 | // Create DistortionSet |
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| 159 | _distortionSet = new osgViewer::DistortionSet(); |
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| 160 | _distortionSet->setIntensityMap( intensityMap ); |
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| 161 | _distortionSet->setDistortionMeshRows( 20 ); |
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| 162 | _distortionSet->setDistortionMeshColumns( 20 ); |
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| 163 | |
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| 164 | |
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| 165 | |
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| 166 | |
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[311] | 167 | osg::GraphicsContext::WindowingSystemInterface* wsi = osg::GraphicsContext::getWindowingSystemInterface(); |
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| 168 | if (!wsi) |
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| 169 | { |
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| 170 | OSG_NOTICE<<"Error, no WindowSystemInterface available, cannot create windows."<<std::endl; |
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| 171 | return; |
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| 172 | } |
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| 173 | |
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[313] | 174 | osg::GraphicsContext::ScreenIdentifier si; |
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[311] | 175 | si.readDISPLAY(); |
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| 176 | |
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| 177 | // displayNum has not been set so reset it to 0. |
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| 178 | if (si.displayNum<0) si.displayNum = 0; |
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| 179 | |
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| 180 | si.screenNum = screenNum; |
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| 181 | |
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| 182 | unsigned int width, height; |
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| 183 | wsi->getScreenResolution(si, width, height); |
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| 184 | |
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| 185 | osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits; |
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| 186 | traits->hostName = si.hostName; |
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| 187 | traits->displayNum = si.displayNum; |
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| 188 | traits->screenNum = si.screenNum; |
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| 189 | traits->x = 0; |
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| 190 | traits->y = 0; |
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| 191 | traits->width = width; |
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| 192 | traits->height = height; |
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| 193 | traits->windowDecoration = false; |
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| 194 | traits->doubleBuffer = true; |
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| 195 | traits->sharedContext = 0; |
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| 196 | |
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[313] | 197 | osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext(traits.get()); |
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[311] | 198 | if (!gc) |
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| 199 | { |
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| 200 | OSG_NOTICE<<"GraphicsWindow has not been created successfully."<<std::endl; |
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| 201 | return; |
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| 202 | } |
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[333] | 203 | |
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[328] | 204 | // Set up projection Matrix as it is done in View::setUpViewOnSingleScreen( |
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| 205 | double fovy, aspectRatio, zNear, zFar; |
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| 206 | _camera->getProjectionMatrixAsPerspective(fovy, aspectRatio, zNear, zFar); |
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[313] | 207 | |
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[328] | 208 | double newAspectRatio = double(traits->width) / double(traits->height); |
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| 209 | double aspectRatioChange = newAspectRatio / aspectRatio; |
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| 210 | if (aspectRatioChange != 1.0) |
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| 211 | { |
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| 212 | _camera->getProjectionMatrix() *= osg::Matrix::scale(1.0/aspectRatioChange,1.0,1.0); |
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| 213 | } |
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| 214 | |
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| 215 | |
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[313] | 216 | int tex_width = width; |
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| 217 | int tex_height = height; |
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| 218 | |
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| 219 | int camera_width = tex_width; |
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| 220 | int camera_height = tex_height; |
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| 221 | |
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[334] | 222 | osg::TextureRectangle* sceneTexture = new osg::TextureRectangle; |
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[313] | 223 | |
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[334] | 224 | sceneTexture->setTextureSize(tex_width, tex_height); |
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| 225 | sceneTexture->setInternalFormat(GL_RGB); |
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| 226 | sceneTexture->setFilter(osg::Texture::MIN_FILTER,osg::Texture::LINEAR); |
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| 227 | sceneTexture->setFilter(osg::Texture::MAG_FILTER,osg::Texture::LINEAR); |
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| 228 | sceneTexture->setWrap(osg::Texture::WRAP_S,osg::Texture::CLAMP_TO_EDGE); |
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| 229 | sceneTexture->setWrap(osg::Texture::WRAP_T,osg::Texture::CLAMP_TO_EDGE); |
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[313] | 230 | |
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| 231 | |
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| 232 | #if 0 |
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| 233 | osg::Camera::RenderTargetImplementation renderTargetImplementation = osg::Camera::SEPERATE_WINDOW; |
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| 234 | GLenum buffer = GL_FRONT; |
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| 235 | #else |
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| 236 | osg::Camera::RenderTargetImplementation renderTargetImplementation = osg::Camera::FRAME_BUFFER_OBJECT; |
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| 237 | GLenum buffer = GL_FRONT; |
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| 238 | #endif |
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| 239 | |
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| 240 | // Scene camera |
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| 241 | { |
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| 242 | osg::ref_ptr<osg::Camera> camera = new osg::Camera; |
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[315] | 243 | camera->setName("Scene cam"); |
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[313] | 244 | camera->setGraphicsContext(gc.get()); |
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| 245 | camera->setViewport(new osg::Viewport(0,0,camera_width, camera_height)); |
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| 246 | camera->setDrawBuffer(buffer); |
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| 247 | camera->setReadBuffer(buffer); |
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| 248 | camera->setAllowEventFocus(false); |
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| 249 | // tell the camera to use OpenGL frame buffer object where supported. |
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| 250 | camera->setRenderTargetImplementation(renderTargetImplementation); |
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| 251 | // attach the texture and use it as the color buffer. |
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[334] | 252 | camera->attach(osg::Camera::COLOR_BUFFER, sceneTexture); |
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[313] | 253 | |
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| 254 | addSlave(camera.get(), osg::Matrixd(), osg::Matrixd()); |
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| 255 | } |
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| 256 | |
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| 257 | // distortion correction set up. |
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| 258 | { |
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[333] | 259 | osg::Geode* geode = new osg::Geode(); |
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[313] | 260 | |
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[333] | 261 | // new we need to add the scene texture to the mesh, we do so by creating a |
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[313] | 262 | // StateSet to contain the Texture StateAttribute. |
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[336] | 263 | osg::StateSet* stateset = geode->getOrCreateStateSet(); |
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[350] | 264 | stateset->setTextureAttributeAndModes(_distortionSet->getTexUnitScene(), sceneTexture,osg::StateAttribute::ON); |
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[336] | 265 | stateset->setMode(GL_LIGHTING,osg::StateAttribute::OFF); |
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[313] | 266 | |
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[336] | 267 | osg::TexMat* texmat = new osg::TexMat; |
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[337] | 268 | texmat->setScaleByTextureRectangleSize(true); |
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[336] | 269 | stateset->setTextureAttributeAndModes(0, texmat, osg::StateAttribute::ON); |
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[313] | 270 | |
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[350] | 271 | setUpIntensityMapBlending(_distortionSet, stateset, screenNum); |
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[337] | 272 | |
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[350] | 273 | osg::Geometry* distortionMesh = createMesh(osg::Vec3(0.0f,0.0f,0.0f), osg::Vec3(width,0.0f,0.0f), osg::Vec3(0.0f,height,0.0f), 20, 20, _distortionSet->getIntensityMap(), false, projectorMatrix); |
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[337] | 274 | geode->addDrawable(distortionMesh); |
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| 275 | |
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[313] | 276 | osg::ref_ptr<osg::Camera> camera = new osg::Camera; |
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| 277 | camera->setGraphicsContext(gc.get()); |
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| 278 | camera->setClearMask(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT ); |
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[336] | 279 | camera->setClearColor( osg::Vec4(0.0,0.0,0.0,1.0) ); |
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[313] | 280 | camera->setViewport(new osg::Viewport(0, 0, width, height)); |
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| 281 | GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT; |
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| 282 | camera->setDrawBuffer(buffer); |
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| 283 | camera->setReadBuffer(buffer); |
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| 284 | camera->setReferenceFrame(osg::Camera::ABSOLUTE_RF); |
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| 285 | camera->setAllowEventFocus(false); |
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| 286 | camera->setInheritanceMask(camera->getInheritanceMask() & ~osg::CullSettings::CLEAR_COLOR & ~osg::CullSettings::COMPUTE_NEAR_FAR_MODE); |
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| 287 | //camera->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR); |
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| 288 | |
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| 289 | camera->setProjectionMatrixAsOrtho2D(0,width,0,height); |
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| 290 | camera->setViewMatrix(osg::Matrix::identity()); |
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| 291 | |
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[338] | 292 | // selector |
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| 293 | geode->getOrCreateStateSet()->setMode( GL_LIGHTING, osg::StateAttribute::OFF ); |
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| 294 | geode->getOrCreateStateSet()->setAttributeAndModes( new osg::PolygonOffset(1.0f, 1.0f) ); |
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[340] | 295 | osg::ref_ptr<distortionHandler> selectorHandler = new distortionHandler( camera, distortionMesh ); |
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[329] | 296 | osg::ref_ptr<osg::Group> root = new osg::Group; |
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| 297 | root->addChild(geode); |
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[340] | 298 | osg::Geode* selectorHighlighter = selectorHandler->createVertexHighlighter(); |
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| 299 | selectorHighlighter->setCullingActive(false); // disable the culling for the selector, otherwise the selector is culled away on the edge. |
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| 300 | root->addChild(selectorHighlighter); |
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| 301 | addEventHandler( selectorHandler.get() ); |
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[329] | 302 | camera->addChild(root); |
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[338] | 303 | // Avoid that the highlighter is culled away |
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| 304 | osg::CullSettings::CullingMode mode = camera->getCullingMode(); |
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| 305 | camera->setCullingMode( mode & (~osg::CullSettings::SMALL_FEATURE_CULLING) ); |
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[329] | 306 | |
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[346] | 307 | // Add the distortionHandler |
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[349] | 308 | osgViewer::DistortionManipulator* distManip = new osgViewer::DistortionManipulator(); |
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| 309 | distManip->setDistortionSet(_distortionSet); |
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| 310 | addEventHandler(distManip); |
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[329] | 311 | |
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[346] | 312 | |
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[320] | 313 | camera->setName("Dist Cam"); |
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[313] | 314 | |
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| 315 | addSlave(camera.get(), osg::Matrixd(), osg::Matrixd(), false); |
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| 316 | } |
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[341] | 317 | } |
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| 318 | |
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[350] | 319 | void extViewer::setUpIntensityMapBlending(osgViewer::DistortionSet* distSet, osg::StateSet* stateset, unsigned int screenNum) |
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[341] | 320 | { |
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[350] | 321 | osg::Image* intensityMap = _distortionSet->getIntensityMap(); |
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| 322 | if(intensityMap == NULL) return; |
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| 323 | |
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| 324 | if(stateset == NULL) |
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[341] | 325 | { |
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| 326 | OSG_NOTICE<<"Error, no intensityMap or stateset for intensityMapBlending specified."<<std::endl; |
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| 327 | return; |
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| 328 | } |
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| 329 | |
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| 330 | osg::GraphicsContext::WindowingSystemInterface* wsi = osg::GraphicsContext::getWindowingSystemInterface(); |
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| 331 | if (!wsi) |
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| 332 | { |
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| 333 | OSG_NOTICE<<"Error, no WindowSystemInterface available, cannot create windows."<<std::endl; |
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| 334 | return; |
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| 335 | } |
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| 336 | |
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| 337 | osg::GraphicsContext::ScreenIdentifier si; |
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| 338 | si.readDISPLAY(); |
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| 339 | |
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| 340 | // displayNum has not been set so reset it to 0. |
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| 341 | if (si.displayNum<0) si.displayNum = 0; |
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| 342 | |
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| 343 | si.screenNum = screenNum; |
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| 344 | |
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| 345 | unsigned int width, height; |
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| 346 | wsi->getScreenResolution(si, width, height); |
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| 347 | |
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| 348 | // Resize intensityMap if the dimensions are wrong |
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| 349 | if(intensityMap->s()!=width || intensityMap->t()!=height) |
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| 350 | intensityMap->scaleImage(width, height, intensityMap->r()); |
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| 351 | |
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| 352 | osg::TextureRectangle* intensityMapTexture = new osg::TextureRectangle(intensityMap); |
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| 353 | intensityMapTexture->setFilter(osg::Texture::MIN_FILTER,osg::Texture::LINEAR); |
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| 354 | intensityMapTexture->setFilter(osg::Texture::MAG_FILTER,osg::Texture::LINEAR); |
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| 355 | intensityMapTexture->setWrap(osg::Texture::WRAP_S,osg::Texture::CLAMP_TO_EDGE); |
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| 356 | intensityMapTexture->setWrap(osg::Texture::WRAP_T,osg::Texture::CLAMP_TO_EDGE); |
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| 357 | |
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[350] | 358 | stateset->setTextureAttributeAndModes(_distortionSet->getTexUnitIntensityMap(), intensityMapTexture, osg::StateAttribute::ON); |
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[341] | 359 | |
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| 360 | // create shaders for blending |
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| 361 | osg::Program* distortProgram = new osg::Program; |
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| 362 | distortProgram->setName( "intensityMapBlending" ); |
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| 363 | osg::Shader* fShader = osg::Shader::readShaderFile( osg::Shader::FRAGMENT, "shader.frag" ); |
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| 364 | fShader->setName("intensityMapFragShader"); |
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| 365 | |
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| 366 | if ( fShader ) |
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| 367 | { |
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| 368 | distortProgram->addShader( fShader ); |
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[350] | 369 | //stateset->addUniform( new osg::Uniform("sceneTexture", _distortionSet->getTexUnitScene()) ); |
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| 370 | //stateset->addUniform( new osg::Uniform("intensityMapTexture", _distortionSet->getTexUnitIntensityMap()) ); |
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| 371 | stateset->addUniform( new osg::Uniform("sceneTexture", 0 ) ); |
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| 372 | stateset->addUniform( new osg::Uniform("intensityMapTexture", 1 ) ); |
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[341] | 373 | stateset->setAttributeAndModes(distortProgram, osg::StateAttribute::ON); |
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| 374 | } |
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[350] | 375 | } |
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| 376 | |
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| 377 | void extViewer::setUpIntensityMapBlending(std::string intensityMap) |
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| 378 | { |
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| 379 | // Try to load intensityMap |
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| 380 | osg::Image* intMap = osgDB::readImageFile(intensityMap); |
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| 381 | if (!intMap) |
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| 382 | { |
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| 383 | osg::notify(osg::WARN) << "Quitting, couldn't find intensity map: " << intensityMap << std::endl; |
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| 384 | return; |
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| 385 | } |
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| 386 | |
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| 387 | // Create DistortionSet |
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| 388 | _distortionSet = new osgViewer::DistortionSet(); |
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| 389 | _distortionSet->setIntensityMap( intMap ); |
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| 390 | _distortionSet->setDistortionMeshRows( 1 ); |
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| 391 | _distortionSet->setDistortionMeshColumns( 1 ); |
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| 392 | _distortionSet->setTexUnitScene( 0 ); |
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| 393 | _distortionSet->setTexUnitIntensityMap( 1 ); |
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| 394 | |
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| 395 | // Todo: call setupDistortion/Blendung to perform the blending |
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[325] | 396 | } |
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