310 lines
16 KiB
C++
310 lines
16 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <drawinglayer/primitive3d/hatchtextureprimitive3d.hxx>
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#include <drawinglayer/primitive3d/polypolygonprimitive3d.hxx>
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#include <basegfx/polygon/b2dpolypolygon.hxx>
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#include <basegfx/polygon/b3dpolygon.hxx>
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#include <basegfx/polygon/b2dpolygon.hxx>
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#include <basegfx/polygon/b2dpolypolygontools.hxx>
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#include <basegfx/range/b2drange.hxx>
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#include <drawinglayer/texture/texture.hxx>
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#include <basegfx/polygon/b2dpolygonclipper.hxx>
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#include <basegfx/matrix/b3dhommatrix.hxx>
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#include <drawinglayer/primitive3d/polygonprimitive3d.hxx>
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#include <drawinglayer/primitive3d/drawinglayer_primitivetypes3d.hxx>
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//////////////////////////////////////////////////////////////////////////////
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using namespace com::sun::star;
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//////////////////////////////////////////////////////////////////////////////
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namespace drawinglayer
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{
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namespace primitive3d
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{
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Primitive3DSequence HatchTexturePrimitive3D::impCreate3DDecomposition() const
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{
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Primitive3DSequence aRetval;
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if(getChildren().hasElements())
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{
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const Primitive3DSequence aSource(getChildren());
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const sal_uInt32 nSourceCount(aSource.getLength());
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std::vector< Primitive3DReference > aDestination;
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for(sal_uInt32 a(0); a < nSourceCount; a++)
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{
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// get reference
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const Primitive3DReference xReference(aSource[a]);
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if(xReference.is())
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{
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// try to cast to BasePrimitive2D implementation
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const BasePrimitive3D* pBasePrimitive = dynamic_cast< const BasePrimitive3D* >(xReference.get());
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if(pBasePrimitive)
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{
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// it is a BasePrimitive3D implementation, use getPrimitive3DID() call for switch
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// not all content is needed, remove transparencies and ModifiedColorPrimitives
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switch(pBasePrimitive->getPrimitive3DID())
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{
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case PRIMITIVE3D_ID_POLYPOLYGONMATERIALPRIMITIVE3D :
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{
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// polyPolygonMaterialPrimitive3D, check texturing and hatching
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const PolyPolygonMaterialPrimitive3D& rPrimitive = static_cast< const PolyPolygonMaterialPrimitive3D& >(*pBasePrimitive);
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const basegfx::B3DPolyPolygon aFillPolyPolygon(rPrimitive.getB3DPolyPolygon());
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if(maHatch.isFillBackground())
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{
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// add original primitive for background
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aDestination.push_back(xReference);
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}
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if(aFillPolyPolygon.areTextureCoordinatesUsed())
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{
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const sal_uInt32 nPolyCount(aFillPolyPolygon.count());
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basegfx::B2DPolyPolygon aTexPolyPolygon;
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basegfx::B2DPoint a2N;
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basegfx::B2DVector a2X, a2Y;
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basegfx::B3DPoint a3N;
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basegfx::B3DVector a3X, a3Y;
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bool b2N(false), b2X(false), b2Y(false);
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for(sal_uInt32 b(0); b < nPolyCount; b++)
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{
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const basegfx::B3DPolygon aPartPoly(aFillPolyPolygon.getB3DPolygon(b));
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const sal_uInt32 nPointCount(aPartPoly.count());
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basegfx::B2DPolygon aTexPolygon;
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for(sal_uInt32 c(0); c < nPointCount; c++)
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{
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const basegfx::B2DPoint a2Candidate(aPartPoly.getTextureCoordinate(c));
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if(!b2N)
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{
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a2N = a2Candidate;
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a3N = aPartPoly.getB3DPoint(c);
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b2N = true;
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}
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else if(!b2X && !a2N.equal(a2Candidate))
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{
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a2X = a2Candidate - a2N;
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a3X = aPartPoly.getB3DPoint(c) - a3N;
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b2X = true;
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}
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else if(!b2Y && !a2N.equal(a2Candidate) && !a2X.equal(a2Candidate))
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{
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a2Y = a2Candidate - a2N;
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const double fCross(a2X.cross(a2Y));
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if(!basegfx::fTools::equalZero(fCross))
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{
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a3Y = aPartPoly.getB3DPoint(c) - a3N;
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b2Y = true;
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}
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}
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aTexPolygon.append(a2Candidate);
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}
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aTexPolygon.setClosed(true);
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aTexPolyPolygon.append(aTexPolygon);
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}
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if(b2N && b2X && b2Y)
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{
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// found two linearly independent 2D vectors
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// get 2d range of texture coordinates
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const basegfx::B2DRange aOutlineRange(basegfx::tools::getRange(aTexPolyPolygon));
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const basegfx::BColor aHatchColor(getHatch().getColor());
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const double fAngle(getHatch().getAngle());
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::std::vector< basegfx::B2DHomMatrix > aMatrices;
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// get hatch transformations
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switch(getHatch().getStyle())
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{
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case attribute::HATCHSTYLE_TRIPLE:
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{
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// rotated 45 degrees
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texture::GeoTexSvxHatch aHatch(aOutlineRange, getHatch().getDistance(), fAngle - F_PI4);
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aHatch.appendTransformations(aMatrices);
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}
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case attribute::HATCHSTYLE_DOUBLE:
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{
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// rotated 90 degrees
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texture::GeoTexSvxHatch aHatch(aOutlineRange, getHatch().getDistance(), fAngle - F_PI2);
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aHatch.appendTransformations(aMatrices);
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}
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case attribute::HATCHSTYLE_SINGLE:
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{
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// angle as given
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texture::GeoTexSvxHatch aHatch(aOutlineRange, getHatch().getDistance(), fAngle);
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aHatch.appendTransformations(aMatrices);
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}
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}
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// create geometry from unit line
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basegfx::B2DPolyPolygon a2DHatchLines;
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basegfx::B2DPolygon a2DUnitLine;
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a2DUnitLine.append(basegfx::B2DPoint(0.0, 0.0));
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a2DUnitLine.append(basegfx::B2DPoint(1.0, 0.0));
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for(sal_uInt32 c(0); c < aMatrices.size(); c++)
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{
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const basegfx::B2DHomMatrix& rMatrix = aMatrices[c];
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basegfx::B2DPolygon aNewLine(a2DUnitLine);
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aNewLine.transform(rMatrix);
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a2DHatchLines.append(aNewLine);
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}
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if(a2DHatchLines.count())
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{
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// clip against texture polygon
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a2DHatchLines = basegfx::tools::clipPolyPolygonOnPolyPolygon(a2DHatchLines, aTexPolyPolygon, true, true);
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}
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if(a2DHatchLines.count())
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{
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// create 2d matrix with 2d vectors as column vectors and 2d point as offset, this represents
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// a coordinate system transformation from unit coordinates to the new coordinate system
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basegfx::B2DHomMatrix a2D;
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a2D.set(0, 0, a2X.getX());
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a2D.set(1, 0, a2X.getY());
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a2D.set(0, 1, a2Y.getX());
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a2D.set(1, 1, a2Y.getY());
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a2D.set(0, 2, a2N.getX());
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a2D.set(1, 2, a2N.getY());
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// invert that transformation, so we have a back-transformation from texture coordinates
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// to unit coordinates
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a2D.invert();
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a2DHatchLines.transform(a2D);
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// expand back-transformated geometry tpo 3D
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basegfx::B3DPolyPolygon a3DHatchLines(basegfx::tools::createB3DPolyPolygonFromB2DPolyPolygon(a2DHatchLines, 0.0));
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// create 3d matrix with 3d vectors as column vectors (0,0,1 as Z) and 3d point as offset, this represents
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// a coordinate system transformation from unit coordinates to the object's 3d coordinate system
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basegfx::B3DHomMatrix a3D;
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a3D.set(0, 0, a3X.getX());
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a3D.set(1, 0, a3X.getY());
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a3D.set(2, 0, a3X.getZ());
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a3D.set(0, 1, a3Y.getX());
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a3D.set(1, 1, a3Y.getY());
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a3D.set(2, 1, a3Y.getZ());
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a3D.set(0, 3, a3N.getX());
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a3D.set(1, 3, a3N.getY());
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a3D.set(2, 3, a3N.getZ());
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// transform hatch lines to 3D object coordinates
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a3DHatchLines.transform(a3D);
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// build primitives from this geometry
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const sal_uInt32 nHatchLines(a3DHatchLines.count());
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for(sal_uInt32 d(0); d < nHatchLines; d++)
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{
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const Primitive3DReference xRef(new PolygonHairlinePrimitive3D(a3DHatchLines.getB3DPolygon(d), aHatchColor));
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aDestination.push_back(xRef);
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}
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}
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}
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}
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break;
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}
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default :
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{
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// add reference to result
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aDestination.push_back(xReference);
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break;
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}
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}
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}
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else
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{
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// unknown implementation, add to result
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aDestination.push_back(xReference);
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}
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}
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}
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// prepare return value
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const sal_uInt32 nDestSize(aDestination.size());
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aRetval.realloc(nDestSize);
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for(sal_uInt32 b(0); b < nDestSize; b++)
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{
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aRetval[b] = aDestination[b];
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}
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}
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return aRetval;
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}
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HatchTexturePrimitive3D::HatchTexturePrimitive3D(
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const attribute::FillHatchAttribute& rHatch,
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const Primitive3DSequence& rChildren,
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const basegfx::B2DVector& rTextureSize,
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bool bModulate,
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bool bFilter)
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: TexturePrimitive3D(rChildren, rTextureSize, bModulate, bFilter),
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maHatch(rHatch),
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maBuffered3DDecomposition()
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{
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}
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bool HatchTexturePrimitive3D::operator==(const BasePrimitive3D& rPrimitive) const
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{
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if(TexturePrimitive3D::operator==(rPrimitive))
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{
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const HatchTexturePrimitive3D& rCompare = (HatchTexturePrimitive3D&)rPrimitive;
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return (getHatch() == rCompare.getHatch());
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}
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return false;
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}
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Primitive3DSequence HatchTexturePrimitive3D::get3DDecomposition(const geometry::ViewInformation3D& /*rViewInformation*/) const
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{
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::osl::MutexGuard aGuard( m_aMutex );
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if(!getBuffered3DDecomposition().hasElements())
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{
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const Primitive3DSequence aNewSequence(impCreate3DDecomposition());
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const_cast< HatchTexturePrimitive3D* >(this)->setBuffered3DDecomposition(aNewSequence);
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}
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return getBuffered3DDecomposition();
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}
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// provide unique ID
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ImplPrimitrive3DIDBlock(HatchTexturePrimitive3D, PRIMITIVE3D_ID_HATCHTEXTUREPRIMITIVE3D)
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} // end of namespace primitive3d
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} // end of namespace drawinglayer
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//////////////////////////////////////////////////////////////////////////////
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// eof
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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