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-rw-r--r--drawinglayer/source/primitive3d/hatchtextureprimitive3d.cxx310
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diff --git a/drawinglayer/source/primitive3d/hatchtextureprimitive3d.cxx b/drawinglayer/source/primitive3d/hatchtextureprimitive3d.cxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information 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 .
+ */
+
+#include <primitive3d/hatchtextureprimitive3d.hxx>
+#include <drawinglayer/primitive3d/polypolygonprimitive3d.hxx>
+#include <basegfx/polygon/b2dpolypolygon.hxx>
+#include <basegfx/polygon/b3dpolygon.hxx>
+#include <basegfx/polygon/b2dpolygon.hxx>
+#include <basegfx/polygon/b2dpolypolygontools.hxx>
+#include <basegfx/range/b2drange.hxx>
+#include <texture/texture.hxx>
+#include <basegfx/polygon/b2dpolygonclipper.hxx>
+#include <basegfx/matrix/b3dhommatrix.hxx>
+#include <drawinglayer/primitive3d/polygonprimitive3d.hxx>
+#include <drawinglayer/primitive3d/drawinglayer_primitivetypes3d.hxx>
+
+
+using namespace com::sun::star;
+
+
+namespace drawinglayer::primitive3d
+{
+ Primitive3DContainer HatchTexturePrimitive3D::impCreate3DDecomposition() const
+ {
+ Primitive3DContainer aRetval;
+
+ if(!getChildren().empty())
+ {
+ const Primitive3DContainer aSource(getChildren());
+ const size_t nSourceCount(aSource.size());
+ std::vector< Primitive3DReference > aDestination;
+
+ for(size_t a(0); a < nSourceCount; a++)
+ {
+ // get reference
+ const Primitive3DReference xReference(aSource[a]);
+
+ if(xReference.is())
+ {
+ const BasePrimitive3D* pBasePrimitive = static_cast< const BasePrimitive3D* >(xReference.get());
+
+ // it is a BasePrimitive3D implementation, use getPrimitive3DID() call for switch
+ // not all content is needed, remove transparencies and ModifiedColorPrimitives
+ switch(pBasePrimitive->getPrimitive3DID())
+ {
+ case PRIMITIVE3D_ID_POLYPOLYGONMATERIALPRIMITIVE3D :
+ {
+ // polyPolygonMaterialPrimitive3D, check texturing and hatching
+ const PolyPolygonMaterialPrimitive3D& rPrimitive = static_cast< const PolyPolygonMaterialPrimitive3D& >(*pBasePrimitive);
+ const basegfx::B3DPolyPolygon& aFillPolyPolygon(rPrimitive.getB3DPolyPolygon());
+
+ if(maHatch.isFillBackground())
+ {
+ // add original primitive for background
+ aDestination.push_back(xReference);
+ }
+
+ if(aFillPolyPolygon.areTextureCoordinatesUsed())
+ {
+ const sal_uInt32 nPolyCount(aFillPolyPolygon.count());
+ basegfx::B2DPolyPolygon aTexPolyPolygon;
+ basegfx::B2DPoint a2N;
+ basegfx::B2DVector a2X, a2Y;
+ basegfx::B3DPoint a3N;
+ basegfx::B3DVector a3X, a3Y;
+ bool b2N(false), b2X(false), b2Y(false);
+
+ for(sal_uInt32 b(0); b < nPolyCount; b++)
+ {
+ const basegfx::B3DPolygon& aPartPoly(aFillPolyPolygon.getB3DPolygon(b));
+ const sal_uInt32 nPointCount(aPartPoly.count());
+ basegfx::B2DPolygon aTexPolygon;
+
+ for(sal_uInt32 c(0); c < nPointCount; c++)
+ {
+ const basegfx::B2DPoint a2Candidate(aPartPoly.getTextureCoordinate(c));
+
+ if(!b2N)
+ {
+ a2N = a2Candidate;
+ a3N = aPartPoly.getB3DPoint(c);
+ b2N = true;
+ }
+ else if(!b2X && !a2N.equal(a2Candidate))
+ {
+ a2X = a2Candidate - a2N;
+ a3X = aPartPoly.getB3DPoint(c) - a3N;
+ b2X = true;
+ }
+ else if(!b2Y && !a2N.equal(a2Candidate) && !a2X.equal(a2Candidate))
+ {
+ a2Y = a2Candidate - a2N;
+
+ const double fCross(a2X.cross(a2Y));
+
+ if(!basegfx::fTools::equalZero(fCross))
+ {
+ a3Y = aPartPoly.getB3DPoint(c) - a3N;
+ b2Y = true;
+ }
+ }
+
+ aTexPolygon.append(a2Candidate);
+ }
+
+ aTexPolygon.setClosed(true);
+ aTexPolyPolygon.append(aTexPolygon);
+ }
+
+ if(b2N && b2X && b2Y)
+ {
+ // found two linearly independent 2D vectors
+ // get 2d range of texture coordinates
+ const basegfx::B2DRange aOutlineRange(basegfx::utils::getRange(aTexPolyPolygon));
+ const basegfx::BColor aHatchColor(getHatch().getColor());
+ const double fAngle(getHatch().getAngle());
+ std::vector< basegfx::B2DHomMatrix > aMatrices;
+
+ // get hatch transformations
+ switch(getHatch().getStyle())
+ {
+ case attribute::HatchStyle::Triple:
+ {
+ // rotated 45 degrees
+ texture::GeoTexSvxHatch aHatch(
+ aOutlineRange,
+ aOutlineRange,
+ getHatch().getDistance(),
+ fAngle - M_PI_4);
+
+ aHatch.appendTransformations(aMatrices);
+
+ [[fallthrough]];
+ }
+ case attribute::HatchStyle::Double:
+ {
+ // rotated 90 degrees
+ texture::GeoTexSvxHatch aHatch(
+ aOutlineRange,
+ aOutlineRange,
+ getHatch().getDistance(),
+ fAngle - M_PI_2);
+
+ aHatch.appendTransformations(aMatrices);
+
+ [[fallthrough]];
+ }
+ case attribute::HatchStyle::Single:
+ {
+ // angle as given
+ texture::GeoTexSvxHatch aHatch(
+ aOutlineRange,
+ aOutlineRange,
+ getHatch().getDistance(),
+ fAngle);
+
+ aHatch.appendTransformations(aMatrices);
+ }
+ }
+
+ // create geometry from unit line
+ basegfx::B2DPolyPolygon a2DHatchLines;
+ basegfx::B2DPolygon a2DUnitLine;
+ a2DUnitLine.append(basegfx::B2DPoint(0.0, 0.0));
+ a2DUnitLine.append(basegfx::B2DPoint(1.0, 0.0));
+
+ for(const basegfx::B2DHomMatrix & rMatrix : aMatrices)
+ {
+ basegfx::B2DPolygon aNewLine(a2DUnitLine);
+ aNewLine.transform(rMatrix);
+ a2DHatchLines.append(aNewLine);
+ }
+
+ if(a2DHatchLines.count())
+ {
+ // clip against texture polygon
+ a2DHatchLines = basegfx::utils::clipPolyPolygonOnPolyPolygon(a2DHatchLines, aTexPolyPolygon, true, true);
+ }
+
+ if(a2DHatchLines.count())
+ {
+ // create 2d matrix with 2d vectors as column vectors and 2d point as offset, this represents
+ // a coordinate system transformation from unit coordinates to the new coordinate system
+ basegfx::B2DHomMatrix a2D;
+ a2D.set(0, 0, a2X.getX());
+ a2D.set(1, 0, a2X.getY());
+ a2D.set(0, 1, a2Y.getX());
+ a2D.set(1, 1, a2Y.getY());
+ a2D.set(0, 2, a2N.getX());
+ a2D.set(1, 2, a2N.getY());
+
+ // invert that transformation, so we have a back-transformation from texture coordinates
+ // to unit coordinates
+ a2D.invert();
+ a2DHatchLines.transform(a2D);
+
+ // expand back-transformed geometry to 3D
+ basegfx::B3DPolyPolygon a3DHatchLines(basegfx::utils::createB3DPolyPolygonFromB2DPolyPolygon(a2DHatchLines, 0.0));
+
+ // create 3d matrix with 3d vectors as column vectors (0,0,1 as Z) and 3d point as offset, this represents
+ // a coordinate system transformation from unit coordinates to the object's 3d coordinate system
+ basegfx::B3DHomMatrix a3D;
+ a3D.set(0, 0, a3X.getX());
+ a3D.set(1, 0, a3X.getY());
+ a3D.set(2, 0, a3X.getZ());
+ a3D.set(0, 1, a3Y.getX());
+ a3D.set(1, 1, a3Y.getY());
+ a3D.set(2, 1, a3Y.getZ());
+ a3D.set(0, 3, a3N.getX());
+ a3D.set(1, 3, a3N.getY());
+ a3D.set(2, 3, a3N.getZ());
+
+ // transform hatch lines to 3D object coordinates
+ a3DHatchLines.transform(a3D);
+
+ // build primitives from this geometry
+ const sal_uInt32 nHatchLines(a3DHatchLines.count());
+
+ for(sal_uInt32 d(0); d < nHatchLines; d++)
+ {
+ const Primitive3DReference xRef(new PolygonHairlinePrimitive3D(a3DHatchLines.getB3DPolygon(d), aHatchColor));
+ aDestination.push_back(xRef);
+ }
+ }
+ }
+ }
+
+ break;
+ }
+ default :
+ {
+ // add reference to result
+ aDestination.push_back(xReference);
+ break;
+ }
+ }
+ }
+ }
+
+ // prepare return value
+ const sal_uInt32 nDestSize(aDestination.size());
+ aRetval.resize(nDestSize);
+
+ for(sal_uInt32 b(0); b < nDestSize; b++)
+ {
+ aRetval[b] = aDestination[b];
+ }
+ }
+
+ return aRetval;
+ }
+
+ HatchTexturePrimitive3D::HatchTexturePrimitive3D(
+ const attribute::FillHatchAttribute& rHatch,
+ const Primitive3DContainer& rChildren,
+ const basegfx::B2DVector& rTextureSize,
+ bool bModulate,
+ bool bFilter)
+ : TexturePrimitive3D(rChildren, rTextureSize, bModulate, bFilter),
+ maHatch(rHatch)
+ {
+ }
+
+ bool HatchTexturePrimitive3D::operator==(const BasePrimitive3D& rPrimitive) const
+ {
+ if(TexturePrimitive3D::operator==(rPrimitive))
+ {
+ const HatchTexturePrimitive3D& rCompare = static_cast<const HatchTexturePrimitive3D&>(rPrimitive);
+
+ return (getHatch() == rCompare.getHatch());
+ }
+
+ return false;
+ }
+
+ Primitive3DContainer HatchTexturePrimitive3D::get3DDecomposition(const geometry::ViewInformation3D& /*rViewInformation*/) const
+ {
+ ::osl::MutexGuard aGuard( m_aMutex );
+
+ if(getBuffered3DDecomposition().empty())
+ {
+ const Primitive3DContainer aNewSequence(impCreate3DDecomposition());
+ const_cast< HatchTexturePrimitive3D* >(this)->maBuffered3DDecomposition = aNewSequence;
+ }
+
+ return getBuffered3DDecomposition();
+ }
+
+ // provide unique ID
+ ImplPrimitive3DIDBlock(HatchTexturePrimitive3D, PRIMITIVE3D_ID_HATCHTEXTUREPRIMITIVE3D)
+
+} // end of namespace
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-04 11:20:23 +0000