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| 2 | |
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| 3 | #include <bedslope.h> |
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| 4 | |
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| 5 | #include <osg/BoundingBox> |
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| 6 | #include <osg/Texture2D> |
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| 7 | #include <osgDB/Registry> |
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| 8 | #include <osgDB/ReadFile> |
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| 9 | #include <osg/TexEnv> |
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| 10 | |
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| 11 | #define DEF_BEDSLOPE_COLOUR 145, 122, 59, 255 // R, G, B, Alpha (brown) |
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| 12 | |
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| 13 | |
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| 14 | // constructor |
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| 15 | BedSlope::BedSlope(SWWReader* sww) |
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| 16 | { |
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| 17 | |
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| 18 | // bedslope geometry as triangles with shared vertices |
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| 19 | _geom = new osg::Geometry; |
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| 20 | |
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| 21 | // geometry from sww file |
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| 22 | osg::Vec3Array* vertices = sww->getBedslopeVertexArray().get(); |
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| 23 | osg::UIntArray* indices = sww->getBedslopeIndexArray().get(); |
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| 24 | osg::Vec3Array* normals = sww->getBedslopeNormalArray().get(); |
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| 25 | unsigned int nindices = sww->getNumberOfBedslopeIndices(); |
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| 26 | |
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| 27 | _geom->setUseDisplayList(false); |
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| 28 | _geom->setVertexArray( vertices ); |
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| 29 | _geom->setVertexIndices( indices ); |
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| 30 | _geom->addPrimitiveSet(new osg::DrawArrays(osg::PrimitiveSet::TRIANGLES, 0, nindices )); |
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| 31 | _geom->setNormalArray( normals ); |
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| 32 | _geom->setNormalBinding( osg::Geometry::BIND_PER_PRIMITIVE ); |
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| 33 | |
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| 34 | |
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| 35 | // geometry bounding box |
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| 36 | osg::BoundingBox bbox = _geom->getBound(); |
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| 37 | |
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| 38 | // bedslope texture coords scaled to range [0,1] |
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| 39 | osg::Vec2Array* texcoords = new osg::Vec2Array; |
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| 40 | osg::Vec3 v; |
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| 41 | float xrange = bbox.xMax() - bbox.xMin(); |
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| 42 | float yrange = bbox.yMax() - bbox.yMin(); |
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| 43 | for( unsigned int i=0; i < vertices->size(); i++ ) |
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| 44 | { |
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| 45 | v = vertices->at(i); |
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| 46 | texcoords->push_back( osg::Vec2( (v.x()-bbox.xMin())/xrange, (v.y()-bbox.yMin())/yrange) ); |
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| 47 | } |
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| 48 | _geom->setTexCoordArray( 0, texcoords ); |
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| 49 | _geom->setTexCoordIndices( 0, indices ); |
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| 50 | |
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| 51 | // bedslope texture |
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| 52 | osg::Texture2D* texture = new osg::Texture2D; |
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| 53 | texture->setDataVariance(osg::Object::DYNAMIC); |
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| 54 | texture->setWrap(osg::Texture::WRAP_S, osg::Texture::REPEAT); |
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| 55 | texture->setWrap(osg::Texture::WRAP_T, osg::Texture::REPEAT); |
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| 56 | texture->setImage(osgDB::readImageFile("bedslope.jpg")); |
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| 57 | |
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| 58 | |
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| 59 | // bedslope colour |
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| 60 | //osg::UByte4Array* colors = new osg::UByte4Array; |
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| 61 | //colors->push_back(osg::UByte4(DEF_BEDSLOPE_COLOUR)); |
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| 62 | //_geom->setColorArray(colors); |
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| 63 | //_geom->setColorBinding(osg::Geometry::BIND_OVERALL); |
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| 64 | |
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| 65 | // material properties |
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| 66 | _material = new osg::Material; |
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| 67 | _material->setDiffuse(osg::Material::FRONT, osg::Vec4(DEF_BEDSLOPE_COLOUR)); |
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| 68 | _material->setSpecular(osg::Material::FRONT, osg::Vec4(1,0,0,1)); |
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| 69 | _material->setShininess(osg::Material::FRONT, 128); |
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| 70 | |
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| 71 | |
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| 72 | _stateset = new osg::StateSet; |
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| 73 | _stateset->setTextureAttributeAndModes( 0, texture, osg::StateAttribute::ON ); |
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| 74 | _stateset->setMode( GL_BLEND, osg::StateAttribute::ON ); |
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| 75 | _stateset->setMode( GL_LIGHTING, osg::StateAttribute::ON ); |
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| 76 | _stateset->setAttribute(_material); |
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| 77 | |
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| 78 | |
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| 79 | |
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| 80 | |
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| 81 | _node = new osg::Geode; |
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| 82 | _node->setName("bedslope"); |
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| 83 | _node->addDrawable(_geom); |
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| 84 | _node->setStateSet(_stateset); |
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| 85 | } |
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| 86 | |
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