982 lines
42 KiB
C++
982 lines
42 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/sdrextrudelathetools3d.hxx>
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#include <osl/diagnose.h>
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#include <basegfx/polygon/b2dpolypolygon.hxx>
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#include <basegfx/range/b2drange.hxx>
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#include <basegfx/polygon/b2dpolypolygontools.hxx>
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#include <basegfx/matrix/b2dhommatrix.hxx>
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#include <basegfx/point/b3dpoint.hxx>
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#include <basegfx/polygon/b3dpolygon.hxx>
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#include <basegfx/polygon/b3dpolygontools.hxx>
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#include <basegfx/polygon/b3dpolypolygontools.hxx>
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#include <basegfx/range/b3drange.hxx>
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#include <basegfx/matrix/b3dhommatrix.hxx>
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#include <basegfx/polygon/b2dpolygontools.hxx>
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#include <drawinglayer/geometry/viewinformation3d.hxx>
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#include <numeric>
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// decomposition helpers for extrude/lathe (rotation) objects
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namespace
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{
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// common helpers
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basegfx::B2DPolyPolygon impScalePolyPolygonOnCenter(
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const basegfx::B2DPolyPolygon& rSource,
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double fScale)
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{
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basegfx::B2DPolyPolygon aRetval(rSource);
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if(!basegfx::fTools::equalZero(fScale))
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{
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const basegfx::B2DRange aRange(basegfx::utils::getRange(rSource));
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const basegfx::B2DPoint aCenter(aRange.getCenter());
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basegfx::B2DHomMatrix aTrans;
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aTrans.translate(-aCenter.getX(), -aCenter.getY());
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aTrans.scale(fScale, fScale);
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aTrans.translate(aCenter.getX(), aCenter.getY());
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aRetval.transform(aTrans);
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}
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return aRetval;
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}
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void impGetOuterPolyPolygon(
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basegfx::B2DPolyPolygon& rPolygon,
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basegfx::B2DPolyPolygon& rOuterPolyPolygon,
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double fOffset,
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bool bCharacterMode)
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{
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rOuterPolyPolygon = rPolygon;
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if (fOffset <= 0.0 || basegfx::fTools::equalZero(fOffset))
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return;
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if(bCharacterMode)
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{
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// grow the outside polygon and scale all polygons to original size. This is done
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// to avoid a shrink which potentially would lead to self-intersections, but changes
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// the original polygon -> not a precision step, so e.g. not usable for charts
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const basegfx::B2DRange aRange(basegfx::utils::getRange(rPolygon));
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rPolygon = basegfx::utils::growInNormalDirection(rPolygon, fOffset);
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const basegfx::B2DRange aGrownRange(basegfx::utils::getRange(rPolygon));
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const double fScaleX(basegfx::fTools::equalZero(aGrownRange.getWidth()) ? 1.0 : aRange.getWidth() / aGrownRange.getWidth());
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const double fScaleY(basegfx::fTools::equalZero(aGrownRange.getHeight())? 1.0 : aRange.getHeight() / aGrownRange.getHeight());
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basegfx::B2DHomMatrix aScaleTrans;
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aScaleTrans.translate(-aGrownRange.getMinX(), -aGrownRange.getMinY());
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aScaleTrans.scale(fScaleX, fScaleY);
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aScaleTrans.translate(aRange.getMinX(), aRange.getMinY());
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rPolygon.transform(aScaleTrans);
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rOuterPolyPolygon.transform(aScaleTrans);
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}
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else
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{
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// use more precision, shrink the outer polygons. Since this may lead to self-intersections,
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// some kind of correction should be applied here after that step
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rOuterPolyPolygon = basegfx::utils::growInNormalDirection(rPolygon, -fOffset);
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// basegfx::utils::correctGrowShrinkPolygonPair(rPolygon, rOuterPolyPolygon);
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}
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}
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void impAddInBetweenFill(
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basegfx::B3DPolyPolygon& rTarget,
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const basegfx::B3DPolyPolygon& rPolA,
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const basegfx::B3DPolyPolygon& rPolB,
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double fTexVerStart,
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double fTexVerStop,
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bool bCreateNormals,
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bool bCreateTextureCoordinates)
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{
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OSL_ENSURE(rPolA.count() == rPolB.count(), "impAddInBetweenFill: unequally sized polygons (!)");
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const sal_uInt32 nPolygonCount(std::min(rPolA.count(), rPolB.count()));
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for(sal_uInt32 a(0); a < nPolygonCount; a++)
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{
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const basegfx::B3DPolygon& aSubA(rPolA.getB3DPolygon(a));
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const basegfx::B3DPolygon& aSubB(rPolB.getB3DPolygon(a));
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OSL_ENSURE(aSubA.count() == aSubB.count(), "impAddInBetweenFill: unequally sized polygons (!)");
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const sal_uInt32 nPointCount(std::min(aSubA.count(), aSubB.count()));
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if(nPointCount)
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{
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const sal_uInt32 nEdgeCount(aSubA.isClosed() ? nPointCount : nPointCount - 1);
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double fTexHorMultiplicatorA(0.0), fTexHorMultiplicatorB(0.0);
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double fPolygonPosA(0.0), fPolygonPosB(0.0);
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if(bCreateTextureCoordinates)
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{
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const double fPolygonLengthA(basegfx::utils::getLength(aSubA));
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fTexHorMultiplicatorA = basegfx::fTools::equalZero(fPolygonLengthA) ? 1.0 : 1.0 / fPolygonLengthA;
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const double fPolygonLengthB(basegfx::utils::getLength(aSubB));
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fTexHorMultiplicatorB = basegfx::fTools::equalZero(fPolygonLengthB) ? 1.0 : 1.0 / fPolygonLengthB;
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}
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for(sal_uInt32 b(0); b < nEdgeCount; b++)
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{
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const sal_uInt32 nIndexA(b);
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const sal_uInt32 nIndexB((b + 1) % nPointCount);
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const basegfx::B3DPoint aStartA(aSubA.getB3DPoint(nIndexA));
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const basegfx::B3DPoint aEndA(aSubA.getB3DPoint(nIndexB));
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const basegfx::B3DPoint aStartB(aSubB.getB3DPoint(nIndexA));
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const basegfx::B3DPoint aEndB(aSubB.getB3DPoint(nIndexB));
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basegfx::B3DPolygon aNew;
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aNew.setClosed(true);
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aNew.append(aStartA);
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aNew.append(aStartB);
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aNew.append(aEndB);
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aNew.append(aEndA);
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if(bCreateNormals)
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{
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aNew.setNormal(0, aSubA.getNormal(nIndexA));
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aNew.setNormal(1, aSubB.getNormal(nIndexA));
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aNew.setNormal(2, aSubB.getNormal(nIndexB));
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aNew.setNormal(3, aSubA.getNormal(nIndexB));
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}
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if(bCreateTextureCoordinates)
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{
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const double fRelTexAL(fPolygonPosA * fTexHorMultiplicatorA);
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const double fEdgeLengthA(basegfx::B3DVector(aEndA - aStartA).getLength());
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fPolygonPosA += fEdgeLengthA;
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const double fRelTexAR(fPolygonPosA * fTexHorMultiplicatorA);
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const double fRelTexBL(fPolygonPosB * fTexHorMultiplicatorB);
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const double fEdgeLengthB(basegfx::B3DVector(aEndB - aStartB).getLength());
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fPolygonPosB += fEdgeLengthB;
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const double fRelTexBR(fPolygonPosB * fTexHorMultiplicatorB);
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aNew.setTextureCoordinate(0, basegfx::B2DPoint(fRelTexAL, fTexVerStart));
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aNew.setTextureCoordinate(1, basegfx::B2DPoint(fRelTexBL, fTexVerStop));
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aNew.setTextureCoordinate(2, basegfx::B2DPoint(fRelTexBR, fTexVerStop));
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aNew.setTextureCoordinate(3, basegfx::B2DPoint(fRelTexAR, fTexVerStart));
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}
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rTarget.append(aNew);
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}
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}
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}
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}
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void impSetNormal(
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basegfx::B3DPolyPolygon& rCandidate,
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const basegfx::B3DVector& rNormal)
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{
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for(sal_uInt32 a(0); a < rCandidate.count(); a++)
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{
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basegfx::B3DPolygon aSub(rCandidate.getB3DPolygon(a));
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for(sal_uInt32 b(0); b < aSub.count(); b++)
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{
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aSub.setNormal(b, rNormal);
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}
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rCandidate.setB3DPolygon(a, aSub);
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}
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}
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void impCreateInBetweenNormals(
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basegfx::B3DPolyPolygon& rPolA,
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basegfx::B3DPolyPolygon& rPolB)
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{
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OSL_ENSURE(rPolA.count() == rPolB.count(), "sdrExtrudePrimitive3D: unequally sized polygons (!)");
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const sal_uInt32 nPolygonCount(std::min(rPolA.count(), rPolB.count()));
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for(sal_uInt32 a(0); a < nPolygonCount; a++)
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{
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basegfx::B3DPolygon aSubA(rPolA.getB3DPolygon(a));
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basegfx::B3DPolygon aSubB(rPolB.getB3DPolygon(a));
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OSL_ENSURE(aSubA.count() == aSubB.count(), "sdrExtrudePrimitive3D: unequally sized polygons (!)");
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const sal_uInt32 nPointCount(std::min(aSubA.count(), aSubB.count()));
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if(nPointCount)
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{
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basegfx::B3DPoint aPrevA(aSubA.getB3DPoint(nPointCount - 1));
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basegfx::B3DPoint aCurrA(aSubA.getB3DPoint(0));
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const bool bClosed(aSubA.isClosed());
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for(sal_uInt32 b(0); b < nPointCount; b++)
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{
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const sal_uInt32 nIndNext((b + 1) % nPointCount);
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const basegfx::B3DPoint aNextA(aSubA.getB3DPoint(nIndNext));
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const basegfx::B3DPoint aCurrB(aSubB.getB3DPoint(b));
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// vector to back
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basegfx::B3DVector aDepth(aCurrB - aCurrA);
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aDepth.normalize();
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if(aDepth.equalZero())
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{
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// no difference, try to get depth from next point
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const basegfx::B3DPoint aNextB(aSubB.getB3DPoint(nIndNext));
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aDepth = aNextB - aNextA;
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aDepth.normalize();
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}
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// vector to left (correct for non-closed lines)
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const bool bFirstAndNotClosed(!bClosed && 0 == b);
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basegfx::B3DVector aLeft(bFirstAndNotClosed ? aCurrA - aNextA : aPrevA - aCurrA);
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aLeft.normalize();
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// create left normal
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const basegfx::B3DVector aNormalLeft(aDepth.getPerpendicular(aLeft));
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// smooth horizontal normals
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{
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// vector to right (correct for non-closed lines)
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const bool bLastAndNotClosed(!bClosed && b + 1 == nPointCount);
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basegfx::B3DVector aRight(bLastAndNotClosed ? aCurrA - aPrevA : aNextA - aCurrA);
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aRight.normalize();
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// create right normal
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const basegfx::B3DVector aNormalRight(aRight.getPerpendicular(aDepth));
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// create smoothed in-between normal
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basegfx::B3DVector aNewNormal(aNormalLeft + aNormalRight);
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aNewNormal.normalize();
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// set as new normal at polygons
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aSubA.setNormal(b, aNewNormal);
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aSubB.setNormal(b, aNewNormal);
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}
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// prepare next step
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aPrevA = aCurrA;
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aCurrA = aNextA;
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}
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rPolA.setB3DPolygon(a, aSubA);
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rPolB.setB3DPolygon(a, aSubB);
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}
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}
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}
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void impMixNormals(
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basegfx::B3DPolyPolygon& rPolA,
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const basegfx::B3DPolyPolygon& rPolB,
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double fWeightA)
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{
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const double fWeightB(1.0 - fWeightA);
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OSL_ENSURE(rPolA.count() == rPolB.count(), "sdrExtrudePrimitive3D: unequally sized polygons (!)");
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const sal_uInt32 nPolygonCount(std::min(rPolA.count(), rPolB.count()));
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for(sal_uInt32 a(0); a < nPolygonCount; a++)
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{
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basegfx::B3DPolygon aSubA(rPolA.getB3DPolygon(a));
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const basegfx::B3DPolygon& aSubB(rPolB.getB3DPolygon(a));
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OSL_ENSURE(aSubA.count() == aSubB.count(), "sdrExtrudePrimitive3D: unequally sized polygons (!)");
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const sal_uInt32 nPointCount(std::min(aSubA.count(), aSubB.count()));
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for(sal_uInt32 b(0); b < nPointCount; b++)
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{
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const basegfx::B3DVector aVA(aSubA.getNormal(b) * fWeightA);
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const basegfx::B3DVector aVB(aSubB.getNormal(b) * fWeightB);
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basegfx::B3DVector aVNew(aVA + aVB);
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aVNew.normalize();
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aSubA.setNormal(b, aVNew);
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}
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rPolA.setB3DPolygon(a, aSubA);
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}
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}
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bool impHasCutWith(const basegfx::B2DPolygon& rPoly, const basegfx::B2DPoint& rStart, const basegfx::B2DPoint& rEnd)
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{
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// polygon is closed, one of the points is a member
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const sal_uInt32 nPointCount(rPoly.count());
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if(!nPointCount)
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return false;
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basegfx::B2DPoint aCurrent(rPoly.getB2DPoint(0));
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const basegfx::B2DVector aVector(rEnd - rStart);
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for(sal_uInt32 a(0); a < nPointCount; a++)
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{
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const sal_uInt32 nNextIndex((a + 1) % nPointCount);
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const basegfx::B2DPoint aNext(rPoly.getB2DPoint(nNextIndex));
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const basegfx::B2DVector aEdgeVector(aNext - aCurrent);
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if(basegfx::utils::findCut(
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rStart, aVector,
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aCurrent, aEdgeVector) != CutFlagValue::NONE)
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{
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return true;
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}
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aCurrent = aNext;
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}
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return false;
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}
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} // end of anonymous namespace
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namespace drawinglayer::primitive3d
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{
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void createLatheSlices(
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Slice3DVector& rSliceVector,
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const basegfx::B2DPolyPolygon& rSource,
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double fBackScale,
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double fDiagonal,
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double fRotation,
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sal_uInt32 nSteps,
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bool bCharacterMode,
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bool bCloseFront,
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bool bCloseBack)
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{
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if(basegfx::fTools::equalZero(fRotation) || 0 == nSteps)
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{
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// no rotation or no steps, just one plane
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rSliceVector.emplace_back(rSource, basegfx::B3DHomMatrix());
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}
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else
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{
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const bool bBackScale(!basegfx::fTools::equal(fBackScale, 1.0));
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const bool bClosedRotation(!bBackScale && basegfx::fTools::equal(fRotation, 2 * M_PI));
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basegfx::B2DPolyPolygon aFront(rSource);
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basegfx::B2DPolyPolygon aBack(rSource);
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basegfx::B3DHomMatrix aTransformBack;
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basegfx::B2DPolyPolygon aOuterBack;
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if(bClosedRotation)
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{
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bCloseFront = bCloseBack = false;
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}
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if(bBackScale)
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{
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// avoid null zoom
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if(basegfx::fTools::equalZero(fBackScale))
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{
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fBackScale = 0.000001;
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}
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// back is scaled compared to front, create scaled version
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aBack = impScalePolyPolygonOnCenter(aBack, fBackScale);
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}
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if(bCloseFront || bCloseBack)
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{
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const basegfx::B2DRange aBaseRange(basegfx::utils::getRange(aFront));
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const double fOuterLength(aBaseRange.getMaxX() * fRotation);
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const double fInnerLength(aBaseRange.getMinX() * fRotation);
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const double fAverageLength((fOuterLength + fInnerLength) * 0.5);
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if(bCloseFront)
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{
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const double fOffsetLen((fAverageLength / 12.0) * fDiagonal);
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basegfx::B2DPolyPolygon aOuterFront;
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impGetOuterPolyPolygon(aFront, aOuterFront, fOffsetLen, bCharacterMode);
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basegfx::B3DHomMatrix aTransform;
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aTransform.translate(0.0, 0.0, fOffsetLen);
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rSliceVector.emplace_back(aOuterFront, aTransform, SLICETYPE3D_FRONTCAP);
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}
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if(bCloseBack)
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{
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const double fOffsetLen((fAverageLength / 12.0) * fDiagonal);
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impGetOuterPolyPolygon(aBack, aOuterBack, fOffsetLen, bCharacterMode);
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aTransformBack.translate(0.0, 0.0, -fOffsetLen);
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aTransformBack.rotate(0.0, fRotation, 0.0);
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}
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}
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// add start polygon (a = 0)
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if(!bClosedRotation)
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{
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rSliceVector.emplace_back(aFront, basegfx::B3DHomMatrix());
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}
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// create segments (a + 1 .. nSteps)
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const double fStepSize(1.0 / static_cast<double>(nSteps));
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for(sal_uInt32 a(0); a < nSteps; a++)
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{
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const double fStep(static_cast<double>(a + 1) * fStepSize);
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basegfx::B2DPolyPolygon aNewPoly(bBackScale ? basegfx::utils::interpolate(aFront, aBack, fStep) : aFront);
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basegfx::B3DHomMatrix aNewMat;
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aNewMat.rotate(0.0, fRotation * fStep, 0.0);
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rSliceVector.emplace_back(aNewPoly, aNewMat);
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}
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if(bCloseBack)
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{
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rSliceVector.emplace_back(aOuterBack, aTransformBack, SLICETYPE3D_BACKCAP);
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}
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}
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}
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void createExtrudeSlices(
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Slice3DVector& rSliceVector,
|
|
const basegfx::B2DPolyPolygon& rSource,
|
|
double fBackScale,
|
|
double fDiagonal,
|
|
double fDepth,
|
|
bool bCharacterMode,
|
|
bool bCloseFront,
|
|
bool bCloseBack)
|
|
{
|
|
if(basegfx::fTools::equalZero(fDepth))
|
|
{
|
|
// no depth, just one plane
|
|
rSliceVector.emplace_back(rSource, basegfx::B3DHomMatrix());
|
|
}
|
|
else
|
|
{
|
|
// there is depth, create Polygons for front,back and their default depth positions
|
|
basegfx::B2DPolyPolygon aFront(rSource);
|
|
basegfx::B2DPolyPolygon aBack(rSource);
|
|
const bool bBackScale(!basegfx::fTools::equal(fBackScale, 1.0));
|
|
double fZFront(fDepth); // default depth for aFront
|
|
double fZBack(0.0); // default depth for aBack
|
|
basegfx::B2DPolyPolygon aOuterBack;
|
|
|
|
if(bBackScale)
|
|
{
|
|
// avoid null zoom
|
|
if(basegfx::fTools::equalZero(fBackScale))
|
|
{
|
|
fBackScale = 0.000001;
|
|
}
|
|
|
|
// aFront is scaled compared to aBack, create scaled version
|
|
aFront = impScalePolyPolygonOnCenter(aFront, fBackScale);
|
|
}
|
|
|
|
if(bCloseFront)
|
|
{
|
|
const double fOffset(fDepth * fDiagonal * 0.5);
|
|
fZFront = fDepth - fOffset;
|
|
basegfx::B2DPolyPolygon aOuterFront;
|
|
impGetOuterPolyPolygon(aFront, aOuterFront, fOffset, bCharacterMode);
|
|
basegfx::B3DHomMatrix aTransformFront;
|
|
aTransformFront.translate(0.0, 0.0, fDepth);
|
|
rSliceVector.emplace_back(aOuterFront, aTransformFront, SLICETYPE3D_FRONTCAP);
|
|
}
|
|
|
|
if(bCloseBack)
|
|
{
|
|
const double fOffset(fDepth * fDiagonal * 0.5);
|
|
fZBack = fOffset;
|
|
impGetOuterPolyPolygon(aBack, aOuterBack, fOffset, bCharacterMode);
|
|
}
|
|
|
|
// add front and back polygons at evtl. changed depths
|
|
{
|
|
basegfx::B3DHomMatrix aTransformA, aTransformB;
|
|
|
|
aTransformA.translate(0.0, 0.0, fZFront);
|
|
rSliceVector.emplace_back(aFront, aTransformA);
|
|
|
|
aTransformB.translate(0.0, 0.0, fZBack);
|
|
rSliceVector.emplace_back(aBack, aTransformB);
|
|
}
|
|
|
|
if(bCloseBack)
|
|
{
|
|
rSliceVector.emplace_back(aOuterBack, basegfx::B3DHomMatrix(), SLICETYPE3D_BACKCAP);
|
|
}
|
|
}
|
|
}
|
|
|
|
basegfx::B3DPolyPolygon extractHorizontalLinesFromSlice(const Slice3DVector& rSliceVector, bool bCloseHorLines)
|
|
{
|
|
basegfx::B3DPolyPolygon aRetval;
|
|
const sal_uInt32 nNumSlices(rSliceVector.size());
|
|
|
|
if(nNumSlices)
|
|
{
|
|
const sal_uInt32 nSlideSubPolygonCount(rSliceVector[0].getB3DPolyPolygon().count());
|
|
|
|
for(sal_uInt32 b(0); b < nSlideSubPolygonCount; b++)
|
|
{
|
|
const sal_uInt32 nSubPolygonPointCount(rSliceVector[0].getB3DPolyPolygon().getB3DPolygon(b).count());
|
|
|
|
for(sal_uInt32 c(0); c < nSubPolygonPointCount; c++)
|
|
{
|
|
basegfx::B3DPolygon aNew;
|
|
|
|
for(sal_uInt32 d(0); d < nNumSlices; d++)
|
|
{
|
|
const bool bSamePolygonCount(nSlideSubPolygonCount == rSliceVector[d].getB3DPolyPolygon().count());
|
|
const bool bSamePointCount(nSubPolygonPointCount == rSliceVector[d].getB3DPolyPolygon().getB3DPolygon(b).count());
|
|
|
|
if(bSamePolygonCount && bSamePointCount)
|
|
{
|
|
aNew.append(rSliceVector[d].getB3DPolyPolygon().getB3DPolygon(b).getB3DPoint(c));
|
|
}
|
|
else
|
|
{
|
|
OSL_ENSURE(bSamePolygonCount, "Slice tools::PolyPolygon with different Polygon count (!)");
|
|
OSL_ENSURE(bSamePointCount, "Slice Polygon with different point count (!)");
|
|
}
|
|
}
|
|
|
|
aNew.setClosed(bCloseHorLines);
|
|
aRetval.append(aNew);
|
|
}
|
|
}
|
|
}
|
|
|
|
return aRetval;
|
|
}
|
|
|
|
basegfx::B3DPolyPolygon extractVerticalLinesFromSlice(const Slice3DVector& rSliceVector)
|
|
{
|
|
basegfx::B3DPolyPolygon aRetval;
|
|
const sal_uInt32 nNumSlices(rSliceVector.size());
|
|
|
|
for(sal_uInt32 a(0); a < nNumSlices; a++)
|
|
{
|
|
aRetval.append(rSliceVector[a].getB3DPolyPolygon());
|
|
}
|
|
|
|
return aRetval;
|
|
}
|
|
|
|
void extractPlanesFromSlice(
|
|
std::vector< basegfx::B3DPolyPolygon >& rFill,
|
|
const Slice3DVector& rSliceVector,
|
|
bool bCreateNormals,
|
|
bool bSmoothNormals,
|
|
bool bSmoothLids,
|
|
bool bClosed,
|
|
double fSmoothNormalsMix,
|
|
double fSmoothLidsMix,
|
|
bool bCreateTextureCoordinates,
|
|
const basegfx::B2DHomMatrix& rTexTransform)
|
|
{
|
|
const sal_uInt32 nNumSlices(rSliceVector.size());
|
|
|
|
if(!nNumSlices)
|
|
return;
|
|
|
|
// common parameters
|
|
const sal_uInt32 nLoopCount(bClosed ? nNumSlices : nNumSlices - 1);
|
|
basegfx::B3DPolyPolygon aEdgeRounding;
|
|
sal_uInt32 a;
|
|
|
|
// texture parameters
|
|
double fInvTexHeight(1.0);
|
|
std::vector<double> aTexHeightArray;
|
|
basegfx::B3DRange aTexRangeFront;
|
|
basegfx::B3DRange aTexRangeBack;
|
|
|
|
if(bCreateTextureCoordinates)
|
|
{
|
|
aTexRangeFront = basegfx::utils::getRange(rSliceVector[0].getB3DPolyPolygon());
|
|
aTexRangeBack = basegfx::utils::getRange(rSliceVector[nNumSlices - 1].getB3DPolyPolygon());
|
|
|
|
if(aTexRangeBack.getDepth() > aTexRangeBack.getWidth())
|
|
{
|
|
// last polygon is rotated so that depth is bigger than width, exchange X and Z
|
|
// for making applyDefaultTextureCoordinatesParallel use Z instead of X for
|
|
// horizontal texture coordinate
|
|
aTexRangeBack = basegfx::B3DRange(
|
|
aTexRangeBack.getMinZ(), aTexRangeBack.getMinY(), aTexRangeBack.getMinX(),
|
|
aTexRangeBack.getMaxZ(), aTexRangeBack.getMaxY(), aTexRangeBack.getMaxX());
|
|
}
|
|
|
|
basegfx::B3DPoint aCenter(basegfx::utils::getRange(rSliceVector[0].getB3DPolyPolygon()).getCenter());
|
|
|
|
for(a = 0; a < nLoopCount; a++)
|
|
{
|
|
const basegfx::B3DPoint aNextCenter(basegfx::utils::getRange(rSliceVector[(a + 1) % nNumSlices].getB3DPolyPolygon()).getCenter());
|
|
const double fLength(basegfx::B3DVector(aNextCenter - aCenter).getLength());
|
|
aTexHeightArray.push_back(fLength);
|
|
aCenter = aNextCenter;
|
|
}
|
|
|
|
const double fTexHeight(std::accumulate(aTexHeightArray.begin(), aTexHeightArray.end(), 0.0));
|
|
|
|
if(!basegfx::fTools::equalZero(fTexHeight))
|
|
{
|
|
fInvTexHeight = 1.0 / fTexHeight;
|
|
}
|
|
}
|
|
|
|
if(nLoopCount)
|
|
{
|
|
double fTexHeightPos(0.0);
|
|
for(a = 0; a < nLoopCount; a++)
|
|
{
|
|
const Slice3D& rSliceA(rSliceVector[a]);
|
|
const Slice3D& rSliceB(rSliceVector[(a + 1) % nNumSlices]);
|
|
const bool bAcceptPair(SLICETYPE3D_REGULAR == rSliceA.getSliceType() && SLICETYPE3D_REGULAR == rSliceB.getSliceType());
|
|
basegfx::B3DPolyPolygon aPolA(rSliceA.getB3DPolyPolygon());
|
|
basegfx::B3DPolyPolygon aPolB(rSliceB.getB3DPolyPolygon());
|
|
|
|
if(bAcceptPair)
|
|
{
|
|
if(bCreateNormals)
|
|
{
|
|
impCreateInBetweenNormals(aPolB, aPolA);
|
|
}
|
|
|
|
{
|
|
const sal_uInt32 nIndPrev((a + nNumSlices - 1) % nNumSlices);
|
|
const Slice3D& rSlicePrev(rSliceVector[nIndPrev]);
|
|
basegfx::B3DPolyPolygon aPrev(rSlicePrev.getB3DPolyPolygon());
|
|
basegfx::B3DPolyPolygon aPolAA(rSliceA.getB3DPolyPolygon());
|
|
|
|
if(SLICETYPE3D_FRONTCAP == rSlicePrev.getSliceType())
|
|
{
|
|
basegfx::B3DPolyPolygon aFront(rSlicePrev.getB3DPolyPolygon());
|
|
const bool bHasSlant(aPolAA != aPrev);
|
|
|
|
if(bCreateTextureCoordinates)
|
|
{
|
|
aFront = basegfx::utils::applyDefaultTextureCoordinatesParallel(aFront, aTexRangeFront);
|
|
}
|
|
|
|
if(bCreateNormals)
|
|
{
|
|
basegfx::B3DVector aNormal(0.0, 0.0, -1.0);
|
|
|
|
if(aFront.count())
|
|
{
|
|
aNormal = -aFront.getB3DPolygon(0).getNormal();
|
|
}
|
|
|
|
impSetNormal(aFront, aNormal);
|
|
|
|
if(bHasSlant)
|
|
{
|
|
impCreateInBetweenNormals(aPolAA, aPrev);
|
|
|
|
if(bSmoothNormals)
|
|
{
|
|
// smooth and copy
|
|
impMixNormals(aPolA, aPolAA, fSmoothNormalsMix);
|
|
aPolAA = aPolA;
|
|
}
|
|
else
|
|
{
|
|
// take over from surface
|
|
aPolAA = aPolA;
|
|
}
|
|
|
|
if(bSmoothLids)
|
|
{
|
|
// smooth and copy
|
|
impMixNormals(aFront, aPrev, fSmoothLidsMix);
|
|
aPrev = aFront;
|
|
}
|
|
else
|
|
{
|
|
// take over from front
|
|
aPrev = aFront;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(bSmoothNormals)
|
|
{
|
|
// smooth
|
|
impMixNormals(aPolA, aFront, fSmoothNormalsMix);
|
|
}
|
|
|
|
if(bSmoothLids)
|
|
{
|
|
// smooth and copy
|
|
impMixNormals(aFront, aPolA, fSmoothLidsMix);
|
|
aPolA = aFront;
|
|
}
|
|
}
|
|
}
|
|
|
|
if(bHasSlant)
|
|
{
|
|
double fTexStart{};
|
|
double fTexStop{};
|
|
if(bCreateTextureCoordinates)
|
|
{
|
|
fTexStart = fTexHeightPos * fInvTexHeight;
|
|
fTexStop = (fTexHeightPos - aTexHeightArray[(a + nLoopCount - 1) % nLoopCount]) * fInvTexHeight;
|
|
}
|
|
|
|
impAddInBetweenFill(aEdgeRounding, aPolAA, aPrev, fTexStart, fTexStop, bCreateNormals, bCreateTextureCoordinates);
|
|
}
|
|
|
|
aFront.flip();
|
|
rFill.push_back(aFront);
|
|
}
|
|
else
|
|
{
|
|
if(bCreateNormals && bSmoothNormals && (nIndPrev != a + 1))
|
|
{
|
|
impCreateInBetweenNormals(aPolAA, aPrev);
|
|
impMixNormals(aPolA, aPolAA, 0.5);
|
|
}
|
|
}
|
|
}
|
|
|
|
{
|
|
const sal_uInt32 nIndNext((a + 2) % nNumSlices);
|
|
const Slice3D& rSliceNext(rSliceVector[nIndNext]);
|
|
basegfx::B3DPolyPolygon aNext(rSliceNext.getB3DPolyPolygon());
|
|
basegfx::B3DPolyPolygon aPolBB(rSliceB.getB3DPolyPolygon());
|
|
|
|
if(SLICETYPE3D_BACKCAP == rSliceNext.getSliceType())
|
|
{
|
|
basegfx::B3DPolyPolygon aBack(rSliceNext.getB3DPolyPolygon());
|
|
const bool bHasSlant(aPolBB != aNext);
|
|
|
|
if(bCreateTextureCoordinates)
|
|
{
|
|
aBack = basegfx::utils::applyDefaultTextureCoordinatesParallel(aBack, aTexRangeBack);
|
|
}
|
|
|
|
if(bCreateNormals)
|
|
{
|
|
const basegfx::B3DVector aNormal(aBack.count() ? aBack.getB3DPolygon(0).getNormal() : basegfx::B3DVector(0.0, 0.0, 1.0));
|
|
impSetNormal(aBack, aNormal);
|
|
|
|
if(bHasSlant)
|
|
{
|
|
impCreateInBetweenNormals(aNext, aPolBB);
|
|
|
|
if(bSmoothNormals)
|
|
{
|
|
// smooth and copy
|
|
impMixNormals(aPolB, aPolBB, fSmoothNormalsMix);
|
|
aPolBB = aPolB;
|
|
}
|
|
else
|
|
{
|
|
// take over from surface
|
|
aPolBB = aPolB;
|
|
}
|
|
|
|
if(bSmoothLids)
|
|
{
|
|
// smooth and copy
|
|
impMixNormals(aBack, aNext, fSmoothLidsMix);
|
|
aNext = aBack;
|
|
}
|
|
else
|
|
{
|
|
// take over from back
|
|
aNext = aBack;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(bSmoothNormals)
|
|
{
|
|
// smooth
|
|
impMixNormals(aPolB, aBack, fSmoothNormalsMix);
|
|
}
|
|
|
|
if(bSmoothLids)
|
|
{
|
|
// smooth and copy
|
|
impMixNormals(aBack, aPolB, fSmoothLidsMix);
|
|
aPolB = aBack;
|
|
}
|
|
}
|
|
}
|
|
|
|
if(bHasSlant)
|
|
{
|
|
double fTexStart{};
|
|
double fTexStop{};
|
|
if(bCreateTextureCoordinates)
|
|
{
|
|
fTexStart = (fTexHeightPos + aTexHeightArray[a] + aTexHeightArray[(a + 1) % nLoopCount]) * fInvTexHeight;
|
|
fTexStop = (fTexHeightPos + aTexHeightArray[a]) * fInvTexHeight;
|
|
}
|
|
|
|
impAddInBetweenFill(aEdgeRounding, aNext, aPolBB, fTexStart, fTexStop, bCreateNormals, bCreateTextureCoordinates);
|
|
}
|
|
|
|
rFill.push_back(aBack);
|
|
}
|
|
else
|
|
{
|
|
if(bCreateNormals && bSmoothNormals && (nIndNext != a))
|
|
{
|
|
impCreateInBetweenNormals(aNext, aPolBB);
|
|
impMixNormals(aPolB, aPolBB, 0.5);
|
|
}
|
|
}
|
|
}
|
|
|
|
double fTexStart{};
|
|
double fTexStop{};
|
|
if(bCreateTextureCoordinates)
|
|
{
|
|
fTexStart = (fTexHeightPos + aTexHeightArray[a]) * fInvTexHeight;
|
|
fTexStop = fTexHeightPos * fInvTexHeight;
|
|
}
|
|
|
|
impAddInBetweenFill(aEdgeRounding, aPolB, aPolA, fTexStart, fTexStop, bCreateNormals, bCreateTextureCoordinates);
|
|
}
|
|
|
|
if(bCreateTextureCoordinates)
|
|
{
|
|
fTexHeightPos += aTexHeightArray[a];
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// no loop, but a single slice (1 == nNumSlices), create a filling from the single
|
|
// front plane
|
|
const Slice3D& rSlice(rSliceVector[0]);
|
|
basegfx::B3DPolyPolygon aFront(rSlice.getB3DPolyPolygon());
|
|
|
|
if(bCreateTextureCoordinates)
|
|
{
|
|
aFront = basegfx::utils::applyDefaultTextureCoordinatesParallel(aFront, aTexRangeFront);
|
|
}
|
|
|
|
if(bCreateNormals)
|
|
{
|
|
basegfx::B3DVector aNormal(0.0, 0.0, -1.0);
|
|
|
|
if(aFront.count())
|
|
{
|
|
aNormal = -aFront.getB3DPolygon(0).getNormal();
|
|
}
|
|
|
|
impSetNormal(aFront, aNormal);
|
|
}
|
|
|
|
aFront.flip();
|
|
rFill.push_back(aFront);
|
|
}
|
|
|
|
if(bCreateTextureCoordinates)
|
|
{
|
|
aEdgeRounding.transformTextureCoordinates(rTexTransform);
|
|
}
|
|
|
|
for(a = 0; a < aEdgeRounding.count(); a++)
|
|
{
|
|
rFill.emplace_back(aEdgeRounding.getB3DPolygon(a));
|
|
}
|
|
}
|
|
|
|
void createReducedOutlines(
|
|
const geometry::ViewInformation3D& rViewInformation,
|
|
const basegfx::B3DHomMatrix& rObjectTransform,
|
|
const basegfx::B3DPolygon& rLoopA,
|
|
const basegfx::B3DPolygon& rLoopB,
|
|
basegfx::B3DPolyPolygon& rTarget)
|
|
{
|
|
const sal_uInt32 nPointCount(rLoopA.count());
|
|
|
|
// with identical polygons there are no outlines
|
|
if(rLoopA == rLoopB)
|
|
return;
|
|
|
|
if(!(nPointCount && nPointCount == rLoopB.count()))
|
|
return;
|
|
|
|
const basegfx::B3DHomMatrix aObjectTransform(rViewInformation.getObjectToView() * rObjectTransform);
|
|
const basegfx::B2DPolygon a2DLoopA(basegfx::utils::createB2DPolygonFromB3DPolygon(rLoopA, aObjectTransform));
|
|
const basegfx::B2DPolygon a2DLoopB(basegfx::utils::createB2DPolygonFromB3DPolygon(rLoopB, aObjectTransform));
|
|
const basegfx::B2DPoint a2DCenterA(a2DLoopA.getB2DRange().getCenter());
|
|
const basegfx::B2DPoint a2DCenterB(a2DLoopB.getB2DRange().getCenter());
|
|
|
|
// without detectable Y-Axis there are no outlines
|
|
if(a2DCenterA.equal(a2DCenterB))
|
|
return;
|
|
|
|
// search for outmost left and right inter-loop-edges which do not cut the loops
|
|
const basegfx::B2DPoint aCommonCenter(basegfx::average(a2DCenterA, a2DCenterB));
|
|
const basegfx::B2DVector aAxisVector(a2DCenterA - a2DCenterB);
|
|
double fMaxLeft(0.0);
|
|
double fMaxRight(0.0);
|
|
sal_uInt32 nIndexLeft(0);
|
|
sal_uInt32 nIndexRight(0);
|
|
|
|
for(sal_uInt32 a(0); a < nPointCount; a++)
|
|
{
|
|
const basegfx::B2DPoint aStart(a2DLoopA.getB2DPoint(a));
|
|
const basegfx::B2DPoint aEnd(a2DLoopB.getB2DPoint(a));
|
|
const basegfx::B2DPoint aMiddle(basegfx::average(aStart, aEnd));
|
|
|
|
if(!basegfx::utils::isInside(a2DLoopA, aMiddle))
|
|
{
|
|
if(!basegfx::utils::isInside(a2DLoopB, aMiddle))
|
|
{
|
|
if(!impHasCutWith(a2DLoopA, aStart, aEnd))
|
|
{
|
|
if(!impHasCutWith(a2DLoopB, aStart, aEnd))
|
|
{
|
|
const basegfx::B2DVector aCandidateVector(aMiddle - aCommonCenter);
|
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const double fCross(aCandidateVector.cross(aAxisVector));
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const double fDistance(aCandidateVector.getLength());
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|
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if(fCross > 0.0)
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|
{
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|
if(fDistance > fMaxLeft)
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|
{
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|
fMaxLeft = fDistance;
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|
nIndexLeft = a;
|
|
}
|
|
}
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|
else if(fCross < 0.0)
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|
{
|
|
if(fDistance > fMaxRight)
|
|
{
|
|
fMaxRight = fDistance;
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|
nIndexRight = a;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if(fMaxLeft != 0.0)
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|
{
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|
basegfx::B3DPolygon aToBeAdded;
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|
aToBeAdded.append(rLoopA.getB3DPoint(nIndexLeft));
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|
aToBeAdded.append(rLoopB.getB3DPoint(nIndexLeft));
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|
rTarget.append(aToBeAdded);
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|
}
|
|
|
|
if(fMaxRight != 0.0)
|
|
{
|
|
basegfx::B3DPolygon aToBeAdded;
|
|
aToBeAdded.append(rLoopA.getB3DPoint(nIndexRight));
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|
aToBeAdded.append(rLoopB.getB3DPoint(nIndexRight));
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|
rTarget.append(aToBeAdded);
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|
}
|
|
}
|
|
|
|
} // end of namespace
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|
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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