void GlassLayer::draw(Graphics* const TheGraphics, const Pnt2f& TopLeft, const Pnt2f& BottomRight, const Real32 Opacity) const
{
Pnt2f IntermediatePosition;
Vec3f Bounds(BottomRight- TopLeft);
//Setup the Blending equations properly
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
glBegin(GL_TRIANGLE_FAN);
glColor4f(getEdgeColor().red(),getEdgeColor().green(),getEdgeColor().blue(),getEdgeColor().alpha() * Opacity);
glVertex2f(getStartPosition().x(), getEndPosition().y());
glColor4f(getCenterColor().red(),getCenterColor().green(),getCenterColor().blue(),getCenterColor().alpha() * Opacity);
glVertex2fv(getStartPosition().getValues());
for(UInt32 i(0) ; i<_Segments.size(); ++i)
{
IntermediatePosition.setValues(_Segments[i].x() * Bounds.x(),_Segments[i].y() * Bounds.y());
glVertex2fv(IntermediatePosition.getValues());
}
glVertex2fv(getEndPosition().getValues());
glEnd();
glDisable(GL_BLEND);
}
void Data::OsgEdge::updateCoordinates( osg::Vec3 srcPos, osg::Vec3 dstPos )
{
coordinates->clear();
edgeTexCoords->clear();
osg::Vec3d viewVec( 0, 0, 1 );
osg::Vec3d up;
if ( camera != 0 ) {
osg::Vec3d eye;
osg::Vec3d center;
camera->getViewMatrixAsLookAt( eye,center,up );
viewVec = eye - center;
// std::cout << eye.x() << " " << eye.y() << " " << eye.z() << "\n";
// std::cout << center.x() << " " << center.y() << " " << center.z() << "\n";
}
viewVec.normalize();
//getting setting for edge scale
osg::Vec3 x, y;
x.set( srcPos );
y.set( dstPos );
osg::Vec3d edgeDir = x - y;
length = edgeDir.length();
up = edgeDir ^ viewVec;
up.normalize();
up *= this->scale;
//updating edge coordinates due to scale
coordinates->push_back( osg::Vec3d( x.x() + up.x(), x.y() + up.y(), x.z() + up.z() ) );
coordinates->push_back( osg::Vec3d( x.x() - up.x(), x.y() - up.y(), x.z() - up.z() ) );
coordinates->push_back( osg::Vec3d( y.x() - up.x(), y.y() - up.y(), y.z() - up.z() ) );
coordinates->push_back( osg::Vec3d( y.x() + up.x(), y.y() + up.y(), y.z() + up.z() ) );
float repeatCnt = static_cast<float>( length / ( 2.f * this->scale ) );
//init edge-text (label) coordinates
edgeTexCoords->push_back( osg::Vec2( 0,1.0f ) );
edgeTexCoords->push_back( osg::Vec2( 0,0.0f ) );
edgeTexCoords->push_back( osg::Vec2( repeatCnt,0.0f ) );
edgeTexCoords->push_back( osg::Vec2( repeatCnt,1.0f ) );
if ( label != NULL ) {
label->setPosition( ( srcPos + dstPos ) / 2 );
}
osg::Geometry* geometry = NULL;
// osg::Geometry* geometry = getDrawable( 0 )->asGeometry();
if ( geometry != NULL ) {
geometry->setVertexArray( coordinates );
geometry->setTexCoordArray( 0, edgeTexCoords );
osg::Vec4Array* colorArray = dynamic_cast<osg::Vec4Array*>( geometry->getColorArray() );
colorArray->pop_back();
/*osg::Vec4f color;
color.r()=getEdgeColor()[0];
color.g()=getEdgeColor()[1];
color.b()=getEdgeColor()[2];
color.a()=getEdgeColor()[3];*/
colorArray->push_back( getEdgeColor() );
}
}
