BboxDrawable::BboxDrawable( const osg::BoundingBox& box, const BBoxSymbol &bboxSymbol ) :
osg::Geometry()
{
setUseVertexBufferObjects(true);
float margin = bboxSymbol.margin().isSet() ? bboxSymbol.margin().value() : 2.f;
osg::Vec3Array* v = new osg::Vec3Array();
if ( bboxSymbol.geom().isSet() && bboxSymbol.geom().value() == BBoxSymbol::GEOM_BOX_ORIENTED )
{
float h = box.yMax() - box.yMin() + 2.f * margin;
v->push_back( osg::Vec3(box.xMax()+margin+h/2.f, box.yMax()+margin-h/2.f, 0) );
}
v->push_back( osg::Vec3(box.xMax()+margin, box.yMax()+margin, 0) );
v->push_back( osg::Vec3(box.xMin()-margin, box.yMax()+margin, 0) );
v->push_back( osg::Vec3(box.xMin()-margin, box.yMin()-margin, 0) );
v->push_back( osg::Vec3(box.xMax()+margin, box.yMin()-margin, 0) );
setVertexArray(v);
if ( v->getVertexBufferObject() )
v->getVertexBufferObject()->setUsage(GL_STATIC_DRAW_ARB);
osg::Vec4Array* c = new osg::Vec4Array();
if ( bboxSymbol.fill().isSet() )
{
c->push_back( bboxSymbol.fill()->color() );
addPrimitiveSet( new osg::DrawArrays(GL_POLYGON, 0, v->getNumElements()) );
}
if ( bboxSymbol.border().isSet() )
{
c->push_back( bboxSymbol.border()->color() );
if ( bboxSymbol.border()->width().isSet() )
getOrCreateStateSet()->setAttribute( new osg::LineWidth( bboxSymbol.border()->width().value() ));
addPrimitiveSet( new osg::DrawArrays(GL_LINE_LOOP, 0, v->getNumElements()) );
}
setColorArray( c );
setColorBinding( osg::Geometry::BIND_PER_PRIMITIVE_SET );
// add the static "isText=true" uniform; this is a hint for the annotation shaders
// if they get installed.
static osg::ref_ptr<osg::Uniform> s_isTextUniform = new osg::Uniform(osg::Uniform::BOOL, AnnotationUtils::UNIFORM_IS_TEXT());
s_isTextUniform->set( false );
getOrCreateStateSet()->addUniform( s_isTextUniform.get() );
// Disable culling since this bounding box will eventually be drawn in screen space.
#if OSG_MIN_VERSION_REQUIRED(3,4,0)
setCullingActive(false);
#endif
}
BboxDrawable::BboxDrawable( const osg::BoundingBox& box, const BBoxSymbol &bboxSymbol ) :
osg::Geometry()
{
setUseVertexBufferObjects(true);
float margin = bboxSymbol.margin().isSet() ? bboxSymbol.margin().value() : 2.f;
osg::Vec3Array* v = new osg::Vec3Array();
if ( bboxSymbol.geom().isSet() && bboxSymbol.geom().value() == BBoxSymbol::GEOM_BOX_ORIENTED )
{
float h = box.yMax() - box.yMin() + 2.f * margin;
v->push_back( osg::Vec3(box.xMax()+margin+h/2.f, box.yMax()+margin-h/2.f, 0) );
}
v->push_back( osg::Vec3(box.xMax()+margin, box.yMax()+margin, 0) );
v->push_back( osg::Vec3(box.xMin()-margin, box.yMax()+margin, 0) );
v->push_back( osg::Vec3(box.xMin()-margin, box.yMin()-margin, 0) );
v->push_back( osg::Vec3(box.xMax()+margin, box.yMin()-margin, 0) );
setVertexArray(v);
if ( v->getVertexBufferObject() )
v->getVertexBufferObject()->setUsage(GL_STATIC_DRAW_ARB);
osg::Vec4Array* c = new osg::Vec4Array(osg::Array::BIND_PER_PRIMITIVE_SET);
if ( bboxSymbol.fill().isSet() )
{
c->push_back( bboxSymbol.fill()->color() );
osg::DrawElements* de = new osg::DrawElementsUByte(GL_TRIANGLE_STRIP);
de->addElement(0);
de->addElement(1);
de->addElement(3);
de->addElement(2);
addPrimitiveSet(de);
//addPrimitiveSet( new osg::DrawArrays(GL_POLYGON, 0, v->getNumElements()) );
}
if ( bboxSymbol.border().isSet() )
{
c->push_back( bboxSymbol.border()->color() );
if ( bboxSymbol.border()->width().isSet() )
getOrCreateStateSet()->setAttribute( new osg::LineWidth( bboxSymbol.border()->width().value() ));
addPrimitiveSet( new osg::DrawArrays(GL_LINE_LOOP, 0, v->getNumElements()) );
}
setColorArray( c );
// Disable culling since this bounding box will eventually be drawn in screen space.
setCullingActive(false);
}
