xref: /aoo42x/main/svx/source/sdr/contact/viewcontactofe3dpolygon.cxx (revision f6e50924)

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 * Licensed to the Apache Software Foundation (ASF) under one
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 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
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 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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 * specific language governing permissions and limitations
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_svx.hxx"

#include <svx/sdr/contact/viewcontactofe3dpolygon.hxx>
#include <svx/polygn3d.hxx>
#include <drawinglayer/primitive3d/sdrpolypolygonprimitive3d.hxx>
#include <svx/sdr/primitive2d/sdrattributecreator.hxx>
#include <svx/sdr/primitive3d/sdrattributecreator3d.hxx>
#include <basegfx/polygon/b3dpolygon.hxx>
#include <basegfx/polygon/b3dpolypolygontools.hxx>

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

namespace sdr
{
	namespace contact
	{
		ViewContactOfE3dPolygon::ViewContactOfE3dPolygon(E3dPolygonObj& rPolygon)
		:	ViewContactOfE3d(rPolygon)
		{
		}

		ViewContactOfE3dPolygon::~ViewContactOfE3dPolygon()
		{
		}

		drawinglayer::primitive3d::Primitive3DSequence ViewContactOfE3dPolygon::createViewIndependentPrimitive3DSequence() const
		{
			drawinglayer::primitive3d::Primitive3DSequence xRetval;
			const SfxItemSet& rItemSet = GetE3dPolygonObj().GetMergedItemSet();
			const bool bSuppressFill(GetE3dPolygonObj().GetLineOnly());
			const drawinglayer::attribute::SdrLineFillShadowAttribute3D aAttribute(
				drawinglayer::primitive2d::createNewSdrLineFillShadowAttribute(rItemSet, bSuppressFill));

			// get extrude geometry
			basegfx::B3DPolyPolygon aPolyPolygon3D(GetE3dPolygonObj().GetPolyPolygon3D());
			const basegfx::B3DPolyPolygon aPolyNormals3D(GetE3dPolygonObj().GetPolyNormals3D());
			const basegfx::B2DPolyPolygon aPolyTexture2D(GetE3dPolygonObj().GetPolyTexture2D());
            const bool bNormals(aPolyNormals3D.count() && aPolyNormals3D.count() == aPolyPolygon3D.count());
            const bool bTexture(aPolyTexture2D.count() && aPolyTexture2D.count() == aPolyPolygon3D.count());

			if(bNormals || bTexture)
			{
				for(sal_uInt32 a(0L); a < aPolyPolygon3D.count(); a++)
				{
					basegfx::B3DPolygon aCandidate3D(aPolyPolygon3D.getB3DPolygon(a));
					basegfx::B3DPolygon aNormals3D;
					basegfx::B2DPolygon aTexture2D;

					if(bNormals)
					{
						aNormals3D = aPolyNormals3D.getB3DPolygon(a);
					}

					if(bTexture)
					{
						aTexture2D = aPolyTexture2D.getB2DPolygon(a);
					}

					for(sal_uInt32 b(0L); b < aCandidate3D.count(); b++)
					{
                        if(bNormals)
                        {
                            sal_uInt32 nNormalCount = aNormals3D.count();
                            if( b < nNormalCount )
                                aCandidate3D.setNormal(b, aNormals3D.getB3DPoint(b));
                            else if( nNormalCount > 0 )
                                aCandidate3D.setNormal(b, aNormals3D.getB3DPoint(0));
                        }
                        if(bTexture)
                        {
                            sal_uInt32 nTextureCount = aTexture2D.count();
                            if( b < nTextureCount )
                                aCandidate3D.setTextureCoordinate(b, aTexture2D.getB2DPoint(b));
                            else if( nTextureCount > 0 )
                                aCandidate3D.setTextureCoordinate(b, aTexture2D.getB2DPoint(0));
                        }
					}

					aPolyPolygon3D.setB3DPolygon(a, aCandidate3D);
				}
			}

			// get 3D Object Attributes
			drawinglayer::attribute::Sdr3DObjectAttribute* pSdr3DObjectAttribute = drawinglayer::primitive2d::createNewSdr3DObjectAttribute(rItemSet);

			// calculate texture size
			basegfx::B2DVector aTextureSize(1.0, 1.0);

			if(bTexture)
			{
                // #i98314#
                // create texture size from object's size
                const basegfx::B3DRange aObjectRange(basegfx::tools::getRange(aPolyPolygon3D));

                double fWidth(0.0);
                double fHeight(0.0);

                // this is a polygon object, so Width/Height and/or Depth may be zero (e.g. left
                // wall of chart). Take this into account
                if(basegfx::fTools::equalZero(aObjectRange.getWidth()))
                {
                    // width is zero, use height and depth
                    fWidth = aObjectRange.getHeight();
                    fHeight = aObjectRange.getDepth();
                }
                else if(basegfx::fTools::equalZero(aObjectRange.getHeight()))
                {
                    // height is zero, use width and depth
                    fWidth = aObjectRange.getWidth();
                    fHeight = aObjectRange.getDepth();
                }
                else
                {
                    // use width and height
                    fWidth = aObjectRange.getWidth();
                    fHeight = aObjectRange.getHeight();
                }

                if(basegfx::fTools::lessOrEqual(fWidth, 0.0) ||basegfx::fTools::lessOrEqual(fHeight, 0.0))
                {
                    // no texture; fallback to very small size
				    aTextureSize.setX(0.01);
				    aTextureSize.setY(0.01);
                }
                else
                {
				    aTextureSize.setX(fWidth);
				    aTextureSize.setY(fHeight);
                }
			}

			// #i98295#
			// unfortunately, this SdrObject type which allows a free 3d geometry definition was defined
			// wrong topologically in relation to it's plane normal and 3D visibility when it was invented
			// a long time ago. Since the API allows creation of this SDrObject type, it is not possible to
			// simply change this definition. Only the chart should use it, and at least this object type
			// only exists at Runtime (is not saved and/or loaded in any FileFormat). Still someone external
			// may have used it in it's API. To not risk wrong 3D lightings, i have to switch the orientation
			// of the polygon here
			aPolyPolygon3D.flip();

			// create primitive and add
			const basegfx::B3DHomMatrix aWorldTransform;
			const drawinglayer::primitive3d::Primitive3DReference xReference(
				new drawinglayer::primitive3d::SdrPolyPolygonPrimitive3D(
					aPolyPolygon3D, aWorldTransform, aTextureSize, aAttribute, *pSdr3DObjectAttribute));
            xRetval = drawinglayer::primitive3d::Primitive3DSequence(&xReference, 1);

			// delete 3D Object Attributes
			delete pSdr3DObjectAttribute;

			return xRetval;
		}
	} // end of namespace contact
} // end of namespace sdr

//////////////////////////////////////////////////////////////////////////////
// eof