AOO410/main/svx/inc/svx/sdr/contact/viewcontactofe3d.hxx

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#ifndef _SDR_CONTACT_VIEWCONTACTOFE3D_HXX
#define _SDR_CONTACT_VIEWCONTACTOFE3D_HXX

#include <svx/sdr/contact/viewcontactofsdrobj.hxx>
#include <drawinglayer/primitive3d/baseprimitive3d.hxx>

//////////////////////////////////////////////////////////////////////////////
// predeclarations

namespace sdr { namespace contact {
	class ViewContactOfE3dScene;
}}

namespace drawinglayer { namespace attribute {
	class SdrLineAttribute;
}}

namespace basegfx {
	class BColor;
    class B3DHomMatrix;
}

class E3dObject;

//////////////////////////////////////////////////////////////////////////////

namespace sdr
{
	namespace contact
	{
		class ViewContactOfE3d : public ViewContactOfSdrObj
		{
		protected:
			// Create a Object-Specific ViewObjectContact, set ViewContact and
			// ObjectContact. Always needs to return something.
			virtual ViewObjectContact& CreateObjectSpecificViewObjectContact(ObjectContact& rObjectContact);

		public:
			// basic constructor, used from E3dObject.
			ViewContactOfE3d(E3dObject& rObj);
			virtual ~ViewContactOfE3d();

			// access to E3dObject
			E3dObject& GetE3dObject() const
			{
				return (E3dObject&)GetSdrObject();
			}

			// public helpers
    		drawinglayer::primitive2d::Primitive2DSequence impCreateWithGivenPrimitive3DSequence(
                const drawinglayer::primitive3d::Primitive3DSequence& rxContent3D) const;

			//////////////////////////////////////////////////////////////////////////////
			// primitive stuff

		protected:
			// Primitive3DSequence of the ViewContact. This contains all necessary information
			// for the graphical visualisation and needs to be supported by all 3D VCs which
			// can be visualized. It does NOT contain the object transformation to be able to
			// buffer for all possible usages
			drawinglayer::primitive3d::Primitive3DSequence              mxViewIndependentPrimitive3DSequence;

			// This method is responsible for creating the graphical visualisation data which is
			// stored in mxViewIndependentPrimitive3DSequence, but without object transformation
			virtual drawinglayer::primitive3d::Primitive3DSequence createViewIndependentPrimitive3DSequence() const = 0;

			// This method is responsible for creating the graphical visualisation data derived ONLY from
            // the model data. The default implementation will try to create a 3D to 2D embedding (will work
			// when scene is known) which can then be used for 2D processing concerning ranges
			virtual drawinglayer::primitive2d::Primitive2DSequence createViewIndependentPrimitive2DSequence() const;

			// helper to enable test-visualisation of invisible 3D obects
			drawinglayer::attribute::SdrLineAttribute* impCreateFallbackLineAttribute(const basegfx::BColor& rBColor) const;

		public:
			// access to the local primitive without the object's local 3D transform. This is e.g. needed
			// to get the not-yet transformed BoundVolume for e.g. interactions
			drawinglayer::primitive3d::Primitive3DSequence getVIP3DSWithoutObjectTransform() const;

			// access to the local primitive. This will ensure that the list is
			// current in comparing the local list content with a fresh created incarnation. It will
			// use getVIP3DSWithoutObjectTransform and embed to 3d transform primitive when object's
			// local 3d transform is used
			drawinglayer::primitive3d::Primitive3DSequence getViewIndependentPrimitive3DSequence() const;
		};
	} // end of namespace contact
} // end of namespace sdr

//////////////////////////////////////////////////////////////////////////////

#endif //_SDR_CONTACT_VIEWCONTACTOFE3D_HXX

// eof