[310] | 1 | #include "extViewer.h" |
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| 2 | |
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[313] | 3 | #include<osg/Texture2D> |
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| 4 | #include<osg/TextureRectangle> |
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| 5 | #include<osg/TexMat> |
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| 6 | #include<osg/ComputeBoundsVisitor> |
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| 7 | |
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| 8 | #include<osgDB/ReadFile> |
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| 9 | |
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| 10 | #include <osgUtil/SmoothingVisitor> |
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| 11 | |
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[311] | 12 | extViewer::extViewer() : Viewer() |
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[310] | 13 | { |
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[311] | 14 | |
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[310] | 15 | } |
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| 16 | |
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[311] | 17 | extViewer::extViewer(osg::ArgumentParser& arguments) : Viewer(arguments) |
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[310] | 18 | { |
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[311] | 19 | |
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[310] | 20 | } |
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[311] | 21 | |
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| 22 | extViewer::extViewer(const osgViewer::Viewer& viewer, const osg::CopyOp& copyop) : Viewer(viewer, copyop) |
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| 23 | { |
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| 24 | |
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| 25 | } |
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| 26 | |
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| 27 | extViewer::~extViewer() |
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| 28 | { |
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| 29 | |
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| 30 | } |
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| 31 | |
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[313] | 32 | void extViewer::setUpViewForManualDistortion(osg::Image* intensityMap, unsigned int screenNum) |
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[311] | 33 | { |
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[313] | 34 | OSG_INFO<<"View::setUpViewForManualDistortion(sn="<<screenNum<<", im="<<intensityMap<<")"<<std::endl; |
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| 35 | |
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[311] | 36 | osg::GraphicsContext::WindowingSystemInterface* wsi = osg::GraphicsContext::getWindowingSystemInterface(); |
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| 37 | if (!wsi) |
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| 38 | { |
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| 39 | OSG_NOTICE<<"Error, no WindowSystemInterface available, cannot create windows."<<std::endl; |
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| 40 | return; |
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| 41 | } |
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| 42 | |
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[313] | 43 | osg::GraphicsContext::ScreenIdentifier si; |
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[311] | 44 | si.readDISPLAY(); |
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| 45 | |
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| 46 | // displayNum has not been set so reset it to 0. |
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| 47 | if (si.displayNum<0) si.displayNum = 0; |
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| 48 | |
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| 49 | si.screenNum = screenNum; |
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| 50 | |
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| 51 | unsigned int width, height; |
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| 52 | wsi->getScreenResolution(si, width, height); |
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| 53 | |
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| 54 | osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits; |
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| 55 | traits->hostName = si.hostName; |
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| 56 | traits->displayNum = si.displayNum; |
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| 57 | traits->screenNum = si.screenNum; |
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| 58 | traits->x = 0; |
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| 59 | traits->y = 0; |
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| 60 | traits->width = width; |
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| 61 | traits->height = height; |
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| 62 | traits->windowDecoration = false; |
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| 63 | traits->doubleBuffer = true; |
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| 64 | traits->sharedContext = 0; |
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| 65 | |
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[313] | 66 | bool applyIntensityMapAsColours = true; |
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[311] | 67 | |
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[313] | 68 | osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext(traits.get()); |
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[311] | 69 | if (!gc) |
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| 70 | { |
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| 71 | OSG_NOTICE<<"GraphicsWindow has not been created successfully."<<std::endl; |
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| 72 | return; |
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| 73 | } |
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[313] | 74 | |
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| 75 | int tex_width = width; |
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| 76 | int tex_height = height; |
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| 77 | |
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| 78 | int camera_width = tex_width; |
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| 79 | int camera_height = tex_height; |
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| 80 | |
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| 81 | osg::TextureRectangle* texture = new osg::TextureRectangle; |
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| 82 | |
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| 83 | texture->setTextureSize(tex_width, tex_height); |
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| 84 | texture->setInternalFormat(GL_RGB); |
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| 85 | texture->setFilter(osg::Texture::MIN_FILTER,osg::Texture::LINEAR); |
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| 86 | texture->setFilter(osg::Texture::MAG_FILTER,osg::Texture::LINEAR); |
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| 87 | texture->setWrap(osg::Texture::WRAP_S,osg::Texture::CLAMP_TO_EDGE); |
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| 88 | texture->setWrap(osg::Texture::WRAP_T,osg::Texture::CLAMP_TO_EDGE); |
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| 89 | |
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| 90 | |
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| 91 | #if 0 |
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| 92 | osg::Camera::RenderTargetImplementation renderTargetImplementation = osg::Camera::SEPERATE_WINDOW; |
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| 93 | GLenum buffer = GL_FRONT; |
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| 94 | #else |
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| 95 | osg::Camera::RenderTargetImplementation renderTargetImplementation = osg::Camera::FRAME_BUFFER_OBJECT; |
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| 96 | GLenum buffer = GL_FRONT; |
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| 97 | #endif |
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| 98 | |
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| 99 | // Scene camera |
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| 100 | { |
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| 101 | osg::ref_ptr<osg::Camera> camera = new osg::Camera; |
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| 102 | camera->setName("Scene camera"); |
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| 103 | camera->setGraphicsContext(gc.get()); |
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| 104 | camera->setViewport(new osg::Viewport(0,0,camera_width, camera_height)); |
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| 105 | camera->setDrawBuffer(buffer); |
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| 106 | camera->setReadBuffer(buffer); |
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| 107 | camera->setAllowEventFocus(false); |
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| 108 | // tell the camera to use OpenGL frame buffer object where supported. |
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| 109 | camera->setRenderTargetImplementation(renderTargetImplementation); |
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| 110 | |
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| 111 | // attach the texture and use it as the color buffer. |
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| 112 | camera->attach(osg::Camera::COLOR_BUFFER, texture); |
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| 113 | |
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| 114 | addSlave(camera.get(), osg::Matrixd(), osg::Matrixd()); |
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| 115 | } |
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| 116 | |
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| 117 | // distortion correction set up. |
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| 118 | { |
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| 119 | osg::Geode* geode = new osg::Geode(); |
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| 120 | //geode->addDrawable(createParoramicSphericalDisplayDistortionMesh(osg::Vec3(0.0f,0.0f,0.0f), osg::Vec3(width,0.0f,0.0f), osg::Vec3(0.0f,height,0.0f), radius, collar, applyIntensityMapAsColours ? intensityMap : 0, projectorMatrix)); |
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| 121 | geode->addDrawable(createMesh(16, 19)); |
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| 122 | |
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| 123 | // new we need to add the texture to the mesh, we do so by creating a |
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| 124 | // StateSet to contain the Texture StateAttribute. |
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| 125 | osg::StateSet* stateset = geode->getOrCreateStateSet(); |
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| 126 | stateset->setTextureAttributeAndModes(0, texture,osg::StateAttribute::ON); |
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| 127 | stateset->setMode(GL_LIGHTING,osg::StateAttribute::OFF); |
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| 128 | |
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| 129 | osg::TexMat* texmat = new osg::TexMat; |
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| 130 | texmat->setScaleByTextureRectangleSize(true); |
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| 131 | stateset->setTextureAttributeAndModes(0, texmat, osg::StateAttribute::ON); |
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| 132 | |
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| 133 | if (!applyIntensityMapAsColours && intensityMap) |
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| 134 | { |
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| 135 | stateset->setTextureAttributeAndModes(1, new osg::Texture2D(intensityMap), osg::StateAttribute::ON); |
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| 136 | } |
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| 137 | |
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| 138 | osg::ref_ptr<osg::Camera> camera = new osg::Camera; |
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| 139 | camera->setGraphicsContext(gc.get()); |
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| 140 | camera->setClearMask(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT ); |
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| 141 | camera->setClearColor( osg::Vec4(0.0,0.0,0.0,1.0) ); |
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| 142 | camera->setViewport(new osg::Viewport(0, 0, width, height)); |
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| 143 | GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT; |
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| 144 | camera->setDrawBuffer(buffer); |
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| 145 | camera->setReadBuffer(buffer); |
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| 146 | camera->setReferenceFrame(osg::Camera::ABSOLUTE_RF); |
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| 147 | camera->setAllowEventFocus(false); |
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| 148 | camera->setInheritanceMask(camera->getInheritanceMask() & ~osg::CullSettings::CLEAR_COLOR & ~osg::CullSettings::COMPUTE_NEAR_FAR_MODE); |
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| 149 | //camera->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR); |
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| 150 | |
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| 151 | camera->setProjectionMatrixAsOrtho2D(0,width,0,height); |
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| 152 | camera->setViewMatrix(osg::Matrix::identity()); |
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| 153 | |
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| 154 | // add subgraph to render |
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| 155 | camera->addChild(geode); |
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| 156 | |
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| 157 | camera->setName("DistortionCorrectionCamera"); |
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| 158 | |
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| 159 | addSlave(camera.get(), osg::Matrixd(), osg::Matrixd(), false); |
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| 160 | } |
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[311] | 161 | } |
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[313] | 162 | |
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| 163 | osg::Geometry* extViewer::createMesh( unsigned int column, unsigned int row ) |
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| 164 | { |
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| 165 | osg::ref_ptr<osg::Vec3Array> vertices = new osg::Vec3Array(column * row); |
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| 166 | osg::ref_ptr<osg::Vec2Array> texcoords = new osg::Vec2Array(column * row); |
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| 167 | for ( unsigned int i=0; i<row; ++i ) |
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| 168 | { |
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| 169 | for ( unsigned int j=0; j<column; ++j ) |
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| 170 | { |
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| 171 | (*vertices)[i*column + j].set( (float)i, (float)j, 0.0f ); |
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| 172 | (*texcoords)[i*column + j].set( (float)i/(float)row, (float)j/(float)column ); |
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| 173 | } |
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| 174 | } |
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| 175 | |
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| 176 | osg::ref_ptr<osg::Geometry> geom = new osg::Geometry; |
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| 177 | geom->setUseDisplayList( false ); |
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| 178 | geom->setUseVertexBufferObjects( true ); |
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| 179 | geom->setVertexArray( vertices.get() ); |
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| 180 | geom->setTexCoordArray( 0, texcoords.get() ); |
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| 181 | for ( unsigned int i=0; i<row-1; ++i ) |
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| 182 | { |
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| 183 | osg::ref_ptr<osg::DrawElementsUInt> de = new osg::DrawElementsUInt(GL_QUAD_STRIP, column*2); |
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| 184 | for ( unsigned int j=0; j<column; ++j ) |
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| 185 | { |
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| 186 | (*de)[j*2 + 0] = i*column + j; |
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| 187 | (*de)[j*2 + 1] = (i+1)*column + j; |
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| 188 | } |
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| 189 | geom->addPrimitiveSet( de.get() ); |
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| 190 | } |
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| 191 | |
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| 192 | |
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| 193 | |
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| 194 | osg::ComputeBoundsVisitor cbv; |
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| 195 | cbv.applyDrawable(geom); |
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| 196 | osg::BoundingBox box = cbv.getBoundingBox(); |
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| 197 | if (!box.valid()) |
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| 198 | std::cout << "Invalid bounding box!"; |
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| 199 | geom->setInitialBound(box); |
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| 200 | |
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| 201 | osg::ref_ptr<osg::Texture2D> texture = new osg::Texture2D; |
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| 202 | texture->setImage( osgDB::readImageFile("Images/osg256.png") ); |
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| 203 | texture->setFilter( osg::Texture2D::MIN_FILTER, osg::Texture2D::LINEAR_MIPMAP_LINEAR ); |
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| 204 | texture->setFilter( osg::Texture2D::MAG_FILTER, osg::Texture2D::LINEAR_MIPMAP_LINEAR ); |
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| 205 | geom->getOrCreateStateSet()->setTextureAttributeAndModes( 0, texture.get() ); |
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| 206 | |
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| 207 | // Create normals |
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| 208 | osgUtil::SmoothingVisitor::smooth( *geom ); |
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| 209 | |
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| 210 | return geom.release(); |
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| 211 | } |
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