[307] | 1 | #include "distortionNG.h" |
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| 2 | |
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[309] | 3 | #include<osg/Texture2D> |
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| 4 | #include<osg/Point> |
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| 5 | #include<osg/ComputeBoundsVisitor> |
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| 6 | |
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| 7 | #include<osgViewer/Viewer> |
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| 8 | |
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| 9 | #include<osgDB/ReadFile> |
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| 10 | |
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| 11 | #include <osgUtil/SmoothingVisitor> |
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| 12 | |
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| 13 | |
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| 14 | |
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| 15 | distortionNG::distortionNG() |
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[307] | 16 | { |
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| 17 | } |
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| 18 | |
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[309] | 19 | distortionNG::~distortionNG() |
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[307] | 20 | { |
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| 21 | } |
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[309] | 22 | |
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| 23 | osg::Geometry* distortionNG::createMesh( unsigned int column, unsigned int row ) |
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| 24 | { |
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| 25 | osg::ref_ptr<osg::Vec3Array> vertices = new osg::Vec3Array(column * row); |
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| 26 | osg::ref_ptr<osg::Vec2Array> texcoords = new osg::Vec2Array(column * row); |
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| 27 | for ( unsigned int i=0; i<row; ++i ) |
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| 28 | { |
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| 29 | for ( unsigned int j=0; j<column; ++j ) |
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| 30 | { |
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| 31 | (*vertices)[i*column + j].set( (float)i, (float)j, 0.0f ); |
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| 32 | (*texcoords)[i*column + j].set( (float)i/(float)row, (float)j/(float)column ); |
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| 33 | } |
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| 34 | } |
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| 35 | |
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| 36 | osg::ref_ptr<osg::Geometry> geom = new osg::Geometry; |
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| 37 | geom->setUseDisplayList( false ); |
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| 38 | geom->setUseVertexBufferObjects( true ); |
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| 39 | geom->setVertexArray( vertices.get() ); |
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| 40 | geom->setTexCoordArray( 0, texcoords.get() ); |
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| 41 | for ( unsigned int i=0; i<row-1; ++i ) |
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| 42 | { |
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| 43 | osg::ref_ptr<osg::DrawElementsUInt> de = new osg::DrawElementsUInt(GL_QUAD_STRIP, column*2); |
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| 44 | for ( unsigned int j=0; j<column; ++j ) |
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| 45 | { |
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| 46 | (*de)[j*2 + 0] = i*column + j; |
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| 47 | (*de)[j*2 + 1] = (i+1)*column + j; |
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| 48 | } |
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| 49 | geom->addPrimitiveSet( de.get() ); |
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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 | osg::ComputeBoundsVisitor cbv; |
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| 55 | cbv.applyDrawable(geom); |
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| 56 | osg::BoundingBox box = cbv.getBoundingBox(); |
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| 57 | if (!box.valid()) |
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| 58 | std::cout << "Invalid bounding box!"; |
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| 59 | geom->setInitialBound(box); |
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| 60 | |
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| 61 | osg::ref_ptr<osg::Texture2D> texture = new osg::Texture2D; |
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| 62 | texture->setImage( osgDB::readImageFile("Images/osg256.png") ); |
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| 63 | texture->setFilter( osg::Texture2D::MIN_FILTER, osg::Texture2D::LINEAR_MIPMAP_LINEAR ); |
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| 64 | texture->setFilter( osg::Texture2D::MAG_FILTER, osg::Texture2D::LINEAR_MIPMAP_LINEAR ); |
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| 65 | geom->getOrCreateStateSet()->setTextureAttributeAndModes( 0, texture.get() ); |
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| 66 | |
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| 67 | // Create normals |
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| 68 | osgUtil::SmoothingVisitor::smooth( *geom ); |
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| 69 | |
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| 70 | return geom.release(); |
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| 71 | } |
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| 72 | |
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| 73 | osg::Geode* distortionHandler::createVertexHighlighter() |
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| 74 | { |
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| 75 | osg::ref_ptr<osg::Vec4Array> colors = new osg::Vec4Array(1); |
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| 76 | (*colors)[0] = _highlightColor; |
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| 77 | |
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| 78 | _highlighter = new osg::Geometry; |
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| 79 | _highlighter->setDataVariance( osg::Object::DYNAMIC ); |
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| 80 | _highlighter->setUseDisplayList( false ); |
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| 81 | _highlighter->setUseVertexBufferObjects( true ); |
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| 82 | _highlighter->setVertexArray( new osg::Vec3Array(1) ); |
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| 83 | _highlighter->setColorArray( colors.get() ); |
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| 84 | _highlighter->setColorBinding( osg::Geometry::BIND_OVERALL ); |
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| 85 | _highlighter->addPrimitiveSet( new osg::DrawArrays(GL_POINTS, 0, 1) ); |
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| 86 | |
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| 87 | osg::ref_ptr<osg::Geode> geode = new osg::Geode; |
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| 88 | geode->addDrawable( _highlighter.get() ); |
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[310] | 89 | geode->getOrCreateStateSet()->setAttributeAndModes( new osg::Point(8.0f) ); |
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[309] | 90 | geode->getOrCreateStateSet()->setMode( GL_LIGHTING, osg::StateAttribute::OFF ); |
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| 91 | |
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| 92 | return geode.release(); |
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| 93 | } |
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| 94 | |
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| 95 | bool distortionHandler::handle( const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa ) |
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| 96 | { |
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[310] | 97 | // Only pressing CTRL activates distortion editing |
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| 98 | if ( !(ea.getModKeyMask()&osgGA::GUIEventAdapter::MODKEY_CTRL) ) |
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| 99 | return false; // False means not handled. |
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| 100 | |
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| 101 | |
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| 102 | if ( ea.getEventType() == osgGA::GUIEventAdapter::PUSH && ea.getButton() == osgGA::GUIEventAdapter::LEFT_MOUSE_BUTTON ) |
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| 103 | { |
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| 104 | osgViewer::View* viewer = dynamic_cast<osgViewer::View*>(&aa); |
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| 105 | if ( viewer ) |
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| 106 | { |
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| 107 | osg::ref_ptr<osgUtil::LineSegmentIntersector> intersector = new osgUtil::LineSegmentIntersector(osgUtil::Intersector::WINDOW, ea.getX(), ea.getY()); |
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| 108 | osgUtil::IntersectionVisitor iv( intersector.get() ); |
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| 109 | viewer->getCamera()->accept( iv ); |
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| 110 | |
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| 111 | if ( intersector->containsIntersections() ) |
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| 112 | { |
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| 113 | osgUtil::LineSegmentIntersector::Intersection& result = *(intersector->getIntersections().begin()); |
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| 114 | computeSelectedVertex( result ); |
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| 115 | } |
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| 116 | } |
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| 117 | } |
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| 118 | |
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| 119 | if ( ea.getEventType() == osgGA::GUIEventAdapter::DRAG ) |
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| 120 | { |
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| 121 | osg::notify(osg::ALWAYS)<<std::endl<<"ea.getGraphicsContext()="<<ea.getGraphicsContext()<<std::endl; |
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| 122 | osg::notify(osg::ALWAYS)<<"ea.getXnormalized()="<<ea.getXnormalized()<<std::endl; |
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| 123 | osg::notify(osg::ALWAYS)<<"ea.getYnormalized()="<<ea.getYnormalized()<<std::endl; |
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| 124 | osg::notify(osg::ALWAYS)<<"ea.getX()="<<ea.getX()<<std::endl; |
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| 125 | osg::notify(osg::ALWAYS)<<"ea.getXin()="<<ea.getXmin()<<std::endl; |
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| 126 | osg::notify(osg::ALWAYS)<<"ea.getXmax()="<<ea.getXmax()<<std::endl; |
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| 127 | osg::notify(osg::ALWAYS)<<"ea.getY()="<<ea.getY()<<std::endl; |
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| 128 | osg::notify(osg::ALWAYS)<<"ea.getYin()="<<ea.getYmin()<<std::endl; |
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| 129 | osg::notify(osg::ALWAYS)<<"ea.getYmax()="<<ea.getYmax()<<std::endl; |
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| 130 | |
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| 131 | return true; // true means event handeld: not forwarded to the camera manipulator; |
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| 132 | } |
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| 133 | |
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| 134 | |
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| 135 | return false; // False means not handled. |
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[309] | 136 | } |
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| 137 | |
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| 138 | void distortionHandler::computeSelectedVertex( osgUtil::LineSegmentIntersector::Intersection& result ) |
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| 139 | { |
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| 140 | osg::Geometry* geom = dynamic_cast<osg::Geometry*>( result.drawable.get() ); |
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| 141 | if ( !geom || !_highlighter || geom==_highlighter ) |
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| 142 | return; |
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| 143 | |
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| 144 | osg::Vec3Array* vertices = dynamic_cast<osg::Vec3Array*>( geom->getVertexArray() ); |
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| 145 | osg::Vec3Array* selVertices = dynamic_cast<osg::Vec3Array*>( _highlighter->getVertexArray() ); |
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| 146 | if ( !vertices || !selVertices ) |
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| 147 | return; |
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| 148 | |
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| 149 | osg::Vec3 point = result.getWorldIntersectPoint(); |
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| 150 | osg::Matrix matrix = osg::computeLocalToWorld( result.nodePath ); // To compute the intersection vertices in world coordinates not in model coordinates |
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| 151 | //std::cout << "Intersection-indices: Size=" << result.indexList.size() << std::endl; |
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| 152 | const std::vector<unsigned int>& selIndices = result.indexList; |
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| 153 | { |
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| 154 | double maxRatio = 0.0; |
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| 155 | int closestVertexIndex = 0; |
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| 156 | for ( unsigned int i=0; i<3 && i<result.ratioList.size(); i++ ) //iterate through rations and search for max |
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| 157 | { |
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| 158 | if(result.ratioList[i] > maxRatio) |
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| 159 | { |
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| 160 | maxRatio = result.ratioList[i]; |
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| 161 | closestVertexIndex = result.indexList[i]; |
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| 162 | } |
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| 163 | } |
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| 164 | osg::Vec3 vertex = (*vertices)[closestVertexIndex] * matrix; |
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| 165 | selVertices->front() = vertex; |
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| 166 | } |
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| 167 | |
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| 168 | selVertices->dirty(); |
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| 169 | _highlighter->dirtyBound(); |
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| 170 | } |
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