primitivetools2d.cxx

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#include <drawinglayer/primitive2d/primitivetools2d.hxx>
#include <basegfx/vector/b2dvector.hxx>
#include <drawinglayer/geometry/viewinformation2d.hxx>
 
 
namespace drawinglayer::primitive2d
{
        void DiscreteMetricDependentPrimitive2D::get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor, const geometry::ViewInformation2D& rViewInformation) const
        {
            // get the current DiscreteUnit, look at X and Y and use the maximum
            const basegfx::B2DVector aDiscreteVector(rViewInformation.getInverseObjectToViewTransformation() * basegfx::B2DVector(1.0, 1.0));
            const double fDiscreteUnit(std::min(fabs(aDiscreteVector.getX()), fabs(aDiscreteVector.getY())));
 
            if(!getBuffered2DDecomposition().empty() && !basegfx::fTools::equal(fDiscreteUnit, getDiscreteUnit()))
            {
                // conditions of last local decomposition have changed, delete
                const_cast< DiscreteMetricDependentPrimitive2D* >(this)->setBuffered2DDecomposition(Primitive2DContainer());
            }
 
            if(getBuffered2DDecomposition().empty())
            {
                // remember new valid DiscreteUnit
                const_cast< DiscreteMetricDependentPrimitive2D* >(this)->mfDiscreteUnit = fDiscreteUnit;
            }
 
            // call base implementation
            BufferedDecompositionPrimitive2D::get2DDecomposition(rVisitor, rViewInformation);
        }
 
 
 
 
        void ViewportDependentPrimitive2D::get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor, const geometry::ViewInformation2D& rViewInformation) const
        {
            // get the current Viewport
            const basegfx::B2DRange& rViewport = rViewInformation.getViewport();
 
            if(!getBuffered2DDecomposition().empty() && !rViewport.equal(getViewport()))
            {
                // conditions of last local decomposition have changed, delete
                const_cast< ViewportDependentPrimitive2D* >(this)->setBuffered2DDecomposition(Primitive2DContainer());
            }
 
            if(getBuffered2DDecomposition().empty())
            {
                // remember new valid DiscreteUnit
                const_cast< ViewportDependentPrimitive2D* >(this)->maViewport = rViewport;
            }
 
            // call base implementation
            BufferedDecompositionPrimitive2D::get2DDecomposition(rVisitor, rViewInformation);
        }
 
        void ViewTransformationDependentPrimitive2D::get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor, const geometry::ViewInformation2D& rViewInformation) const
        {
            // get the current ViewTransformation
            const basegfx::B2DHomMatrix& rViewTransformation = rViewInformation.getViewTransformation();
 
            if(!getBuffered2DDecomposition().empty() && rViewTransformation != getViewTransformation())
            {
                // conditions of last local decomposition have changed, delete
                const_cast< ViewTransformationDependentPrimitive2D* >(this)->setBuffered2DDecomposition(Primitive2DContainer());
            }
 
            if(getBuffered2DDecomposition().empty())
            {
                // remember new valid ViewTransformation
                const_cast< ViewTransformationDependentPrimitive2D* >(this)->maViewTransformation = rViewTransformation;
            }
 
            // call base implementation
            BufferedDecompositionPrimitive2D::get2DDecomposition(rVisitor, rViewInformation);
        }
 
        void ObjectAndViewTransformationDependentPrimitive2D::get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor, const geometry::ViewInformation2D& rViewInformation) const
        {
            // get the current ViewTransformation
            const basegfx::B2DHomMatrix& rViewTransformation = rViewInformation.getViewTransformation();
 
            if(!getBuffered2DDecomposition().empty() && rViewTransformation != getViewTransformation())
            {
                // conditions of last local decomposition have changed, delete
                const_cast< ObjectAndViewTransformationDependentPrimitive2D* >(this)->setBuffered2DDecomposition(Primitive2DContainer());
            }
 
            // get the current ObjectTransformation
            const basegfx::B2DHomMatrix& rObjectTransformation = rViewInformation.getObjectTransformation();
 
            if(!getBuffered2DDecomposition().empty() && rObjectTransformation != getObjectTransformation())
            {
                // conditions of last local decomposition have changed, delete
                const_cast< ObjectAndViewTransformationDependentPrimitive2D* >(this)->setBuffered2DDecomposition(Primitive2DContainer());
            }
 
            if(getBuffered2DDecomposition().empty())
            {
                // remember new valid ViewTransformation, and ObjectTransformation
                const_cast< ObjectAndViewTransformationDependentPrimitive2D* >(this)->maViewTransformation = rViewTransformation;
                const_cast< ObjectAndViewTransformationDependentPrimitive2D* >(this)->maObjectTransformation = rObjectTransformation;
            }
 
            // call base implementation
            BufferedDecompositionPrimitive2D::get2DDecomposition(rVisitor, rViewInformation);
        }
 
} // end of namespace
 
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