1 files changed, 81 insertions, 0 deletions
diff --git a/drawinglayer/inc/drawinglayer/primitive3d/hiddengeometryprimitive3d.hxx b/drawinglayer/inc/drawinglayer/primitive3d/hiddengeometryprimitive3d.hxx
new file mode 100644
index 000000000000..287bfcc689e4
--- /dev/null
+++ b/drawinglayer/inc/drawinglayer/primitive3d/hiddengeometryprimitive3d.hxx
@@ -0,0 +1,81 @@
+/*************************************************************************
+ *
+ *  OpenOffice.org - a multi-platform office productivity suite
+ *
+ *  $RCSfile: hittestprimitive3d.hxx,v $
+ *
+ *  $Revision: 1.1.2.1 $
+ *
+ *  last change: $Author: aw $ $Date: 2008/09/24 14:27:39 $
+ *
+ *  The Contents of this file are made available subject to
+ *  the terms of GNU Lesser General Public License Version 2.1.
+ *
+ *
+ *    GNU Lesser General Public License Version 2.1
+ *    =============================================
+ *    Copyright 2005 by Sun Microsystems, Inc.
+ *    901 San Antonio Road, Palo Alto, CA 94303, USA
+ *
+ *    This library is free software; you can redistribute it and/or
+ *    modify it under the terms of the GNU Lesser General Public
+ *    License version 2.1, as published by the Free Software Foundation.
+ *
+ *    This library is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *    Lesser General Public License for more details.
+ *
+ *    You should have received a copy of the GNU Lesser General Public
+ *    License along with this library; if not, write to the Free Software
+ *    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ *    MA  02111-1307  USA
+ *
+ ************************************************************************/
+
+#ifndef INCLUDED_DRAWINGLAYER_PRIMITIVE3D_HIDDENGEOMETRYPRIMITIVE3D_HXX
+#define INCLUDED_DRAWINGLAYER_PRIMITIVE3D_HIDDENGEOMETRYPRIMITIVE3D_HXX
+
+#include <drawinglayer/primitive3d/groupprimitive3d.hxx>
+
+//////////////////////////////////////////////////////////////////////////////
+
+namespace drawinglayer
+{
+    namespace primitive3d
+    {
+        // This primitive is used to represent geometry for non-visible objects,
+        // e.g. a 3D cube without fill attributes. To still be able to use
+        // primitives for HitTest functionality, the 3d decompositions produce
+        // an as much as possible simplified fill geometry encapsulated in this
+        // primtive when there is no fill geometry. Currently, the 3d hit test
+        // uses only areas, so maybe in a further enchanced version this will change
+        // to 'if neither filled nor lines' creation criteria. The whole primitive
+        // decomposes to nothing, so no one not knowing it will be influenced. Only
+        // helper processors for hit test (and maybe BoundRect extractors) will
+        // use it and it's children subcontent.
+        class HiddenGeometryPrimitive3D : public GroupPrimitive3D
+        {
+        public:
+            HiddenGeometryPrimitive3D(const Primitive3DSequence& rChildren);
+
+            // despite returning an empty decomposition since it's no visualisation data,
+            // range calculation is intended to use hidden geometry, so
+            // the local implementation will return the children's range
+            virtual basegfx::B3DRange getB3DRange(const geometry::ViewInformation3D& rViewInformation) const;
+
+            /// The default implementation returns an empty sequence
+            virtual Primitive3DSequence get3DDecomposition(const geometry::ViewInformation3D& rViewInformation) const;
+
+            // provide unique ID
+            DeclPrimitrive3DIDBlock()
+        };
+    } // end of namespace primitive3d
+} // end of namespace drawinglayer
+
+//////////////////////////////////////////////////////////////////////////////
+
+#endif //INCLUDED_DRAWINGLAYER_PRIMITIVE3D_HIDDENGEOMETRYPRIMITIVE3D_HXX
+
+//////////////////////////////////////////////////////////////////////////////
+// eof