drawinglayer/source/primitive3d/sdrsphereprimitive3d.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
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   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <drawinglayer/primitive3d/sdrsphereprimitive3d.hxx>
  21 #include <basegfx/polygon/b3dpolypolygontools.hxx>
  22 #include <basegfx/matrix/b2dhommatrix.hxx>
  23 #include <primitive3d/sdrdecompositiontools3d.hxx>
  24 #include <drawinglayer/primitive3d/drawinglayer_primitivetypes3d.hxx>
  25 #include <drawinglayer/attribute/sdrfillattribute.hxx>
  26 #include <drawinglayer/attribute/sdrlineattribute.hxx>
  27 #include <drawinglayer/attribute/sdrshadowattribute.hxx>
  28
  29
  30 using namespace com::sun::star;
  31
  32
  33 namespace drawinglayer::primitive3d
  34 {
  35         Primitive3DContainer SdrSpherePrimitive3D::create3DDecomposition(const geometry::ViewInformation3D& /*rViewInformation*/) const
  36         {
  37             Primitive3DContainer aRetval;
  38             const basegfx::B3DRange aUnitRange(0.0, 0.0, 0.0, 1.0, 1.0, 1.0);
  39             const bool bCreateNormals(css::drawing::NormalsKind_SPECIFIC == getSdr3DObjectAttribute().getNormalsKind()
  40                 || css::drawing::NormalsKind_SPHERE == getSdr3DObjectAttribute().getNormalsKind());
  41
  42             // create unit geometry
  43             basegfx::B3DPolyPolygon aFill(basegfx::utils::createSphereFillPolyPolygonFromB3DRange(aUnitRange,
  44                 getHorizontalSegments(), getVerticalSegments(), bCreateNormals));
  45
  46             // normal inversion
  47             if(!getSdrLFSAttribute().getFill().isDefault()
  48                 && bCreateNormals
  49                 && getSdr3DObjectAttribute().getNormalsInvert()
  50                 && aFill.areNormalsUsed())
  51             {
  52                 // invert normals
  53                 aFill = basegfx::utils::invertNormals(aFill);
  54             }
  55
  56             // texture coordinates
  57             if(!getSdrLFSAttribute().getFill().isDefault())
  58             {
  59                 // handle texture coordinates X
  60                 const bool bParallelX(css::drawing::TextureProjectionMode_PARALLEL == getSdr3DObjectAttribute().getTextureProjectionX());
  61                 const bool bObjectSpecificX(css::drawing::TextureProjectionMode_OBJECTSPECIFIC == getSdr3DObjectAttribute().getTextureProjectionX());
  62                 const bool bSphereX(css::drawing::TextureProjectionMode_SPHERE == getSdr3DObjectAttribute().getTextureProjectionX());
  63
  64                 // handle texture coordinates Y
  65                 const bool bParallelY(css::drawing::TextureProjectionMode_PARALLEL == getSdr3DObjectAttribute().getTextureProjectionY());
  66                 const bool bObjectSpecificY(css::drawing::TextureProjectionMode_OBJECTSPECIFIC == getSdr3DObjectAttribute().getTextureProjectionY());
  67                 const bool bSphereY(css::drawing::TextureProjectionMode_SPHERE == getSdr3DObjectAttribute().getTextureProjectionY());
  68
  69                 if(bParallelX || bParallelY)
  70                 {
  71                     // apply parallel texture coordinates in X and/or Y
  72                     const basegfx::B3DRange aRange(basegfx::utils::getRange(aFill));
  73                     aFill = basegfx::utils::applyDefaultTextureCoordinatesParallel(aFill, aRange, bParallelX, bParallelY);
  74                 }
  75
  76                 if(bSphereX || bObjectSpecificX || bSphereY || bObjectSpecificY)
  77                 {
  78                     double fRelativeAngle(0.0);
  79
  80                     if(bObjectSpecificX)
  81                     {
  82                         // Since the texture coordinates are (for historical reasons)
  83                         // different from forced to sphere texture coordinates,
  84                         // create a old version from it by rotating to old state before applying
  85                         // the texture coordinates to emulate old behaviour
  86                         fRelativeAngle = 2 * M_PI * (static_cast<double>((getHorizontalSegments() >> 1)  - 1) / static_cast<double>(getHorizontalSegments()));
  87                         basegfx::B3DHomMatrix aRot;
  88                         aRot.rotate(0.0, fRelativeAngle, 0.0);
  89                         aFill.transform(aRot);
  90                     }
  91
  92                     // apply spherical texture coordinates in X and/or Y
  93                     const basegfx::B3DRange aRange(basegfx::utils::getRange(aFill));
  94                     const basegfx::B3DPoint aCenter(aRange.getCenter());
  95                     aFill = basegfx::utils::applyDefaultTextureCoordinatesSphere(aFill, aCenter,
  96                         bSphereX || bObjectSpecificX, bSphereY || bObjectSpecificY);
  97
  98                     if(bObjectSpecificX)
  99                     {
 100                         // rotate back again
 101                         basegfx::B3DHomMatrix aRot;
 102                         aRot.rotate(0.0, -fRelativeAngle, 0.0);
 103                         aFill.transform(aRot);
 104                     }
 105                 }
 106
 107                 // transform texture coordinates to texture size
 108                 basegfx::B2DHomMatrix aTexMatrix;
 109                 aTexMatrix.scale(getTextureSize().getX(), getTextureSize().getY());
 110                 aFill.transformTextureCoordinates(aTexMatrix);
 111             }
 112
 113             // build vector of PolyPolygons
 114             std::vector< basegfx::B3DPolyPolygon > a3DPolyPolygonVector;
 115
 116             for(sal_uInt32 a(0); a < aFill.count(); a++)
 117             {
 118                 a3DPolyPolygonVector.emplace_back(aFill.getB3DPolygon(a));
 119             }
 120
 121             if(!getSdrLFSAttribute().getFill().isDefault())
 122             {
 123                 // add fill
 124                 aRetval = create3DPolyPolygonFillPrimitives(
 125                     a3DPolyPolygonVector,
 126                     getTransform(),
 127                     getTextureSize(),
 128                     getSdr3DObjectAttribute(),
 129                     getSdrLFSAttribute().getFill(),
 130                     getSdrLFSAttribute().getFillFloatTransGradient());
 131             }
 132             else
 133             {
 134                 // create simplified 3d hit test geometry
 135                 aRetval = createHiddenGeometryPrimitives3D(
 136                     a3DPolyPolygonVector,
 137                     getTransform(),
 138                     getTextureSize(),
 139                     getSdr3DObjectAttribute());
 140             }
 141
 142             // add line
 143             if(!getSdrLFSAttribute().getLine().isDefault())
 144             {
 145                 basegfx::B3DPolyPolygon aSphere(basegfx::utils::createSpherePolyPolygonFromB3DRange(aUnitRange, getHorizontalSegments(), getVerticalSegments()));
 146                 const Primitive3DContainer aLines(create3DPolyPolygonLinePrimitives(
 147                     aSphere, getTransform(), getSdrLFSAttribute().getLine()));
 148                 aRetval.append(aLines);
 149             }
 150
 151             // add shadow
 152             if(!getSdrLFSAttribute().getShadow().isDefault()
 153                 && !aRetval.empty())
 154             {
 155                 const Primitive3DContainer aShadow(createShadowPrimitive3D(
 156                     aRetval, getSdrLFSAttribute().getShadow(), getSdr3DObjectAttribute().getShadow3D()));
 157                 aRetval.append(aShadow);
 158             }
 159
 160             return aRetval;
 161         }
 162
 163         SdrSpherePrimitive3D::SdrSpherePrimitive3D(
 164             const basegfx::B3DHomMatrix& rTransform,
 165             const basegfx::B2DVector& rTextureSize,
 166             const attribute::SdrLineFillShadowAttribute3D& rSdrLFSAttribute,
 167             const attribute::Sdr3DObjectAttribute& rSdr3DObjectAttribute,
 168             sal_uInt32 nHorizontalSegments,
 169             sal_uInt32 nVerticalSegments)
 170         :   SdrPrimitive3D(rTransform, rTextureSize, rSdrLFSAttribute, rSdr3DObjectAttribute),
 171             mnHorizontalSegments(nHorizontalSegments),
 172             mnVerticalSegments(nVerticalSegments)
 173         {
 174         }
 175
 176         bool SdrSpherePrimitive3D::operator==(const BasePrimitive3D& rPrimitive) const
 177         {
 178             if(SdrPrimitive3D::operator==(rPrimitive))
 179             {
 180                 const SdrSpherePrimitive3D& rCompare = static_cast< const SdrSpherePrimitive3D& >(rPrimitive);
 181
 182                 return (getHorizontalSegments() == rCompare.getHorizontalSegments()
 183                     && getVerticalSegments() == rCompare.getVerticalSegments());
 184             }
 185
 186             return false;
 187         }
 188
 189         basegfx::B3DRange SdrSpherePrimitive3D::getB3DRange(const geometry::ViewInformation3D& /*rViewInformation*/) const
 190         {
 191             // use default from sdrPrimitive3D which uses transformation expanded by line width/2
 192             // The parent implementation which uses the ranges of the decomposition would be more
 193             // correct, but for historical reasons it is necessary to do the old method: To get
 194             // the range of the non-transformed geometry and transform it then. This leads to different
 195             // ranges where the new method is more correct, but the need to keep the old behaviour
 196             // has priority here.
 197             return getStandard3DRange();
 198         }
 199
 200         // provide unique ID
 201         ImplPrimitive3DIDBlock(SdrSpherePrimitive3D, PRIMITIVE3D_ID_SDRSPHEREPRIMITIVE3D)
 202
 203 } // end of namespace
 204
 205 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */