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