polygn3d.cxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 *
 * 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
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 *   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
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#include <polygn3d.hxx>
#include <svx/svdobjkind.hxx>
#include <basegfx/point/b3dpoint.hxx>
#include <sdr/contact/viewcontactofe3dpolygon.hxx>
#include <basegfx/polygon/b3dpolygon.hxx>
#include <basegfx/polygon/b3dpolygontools.hxx>
 
// DrawContact section
std::unique_ptr<sdr::contact::ViewContact> E3dPolygonObj::CreateObjectSpecificViewContact()
{
    return std::make_unique<sdr::contact::ViewContactOfE3dPolygon>(*this);
}
 
E3dPolygonObj::E3dPolygonObj(SdrModel& rSdrModel, const basegfx::B3DPolyPolygon& rPolyPoly3D)
    : E3dCompoundObject(rSdrModel)
    , bLineOnly(true)
{
    // Set geometry
    SetPolyPolygon3D(rPolyPoly3D);
 
    // Create default normals
    CreateDefaultNormals();
 
    // Create default texture coordinates
    CreateDefaultTexture();
}
 
E3dPolygonObj::E3dPolygonObj(SdrModel& rSdrModel)
    : E3dCompoundObject(rSdrModel)
    , bLineOnly(false)
{
    // Create no geometry
}
 
E3dPolygonObj::E3dPolygonObj(SdrModel& rSdrModel, E3dPolygonObj const& rSource)
    : E3dCompoundObject(rSdrModel, rSource)
    , bLineOnly(false)
{
    // Create no geometry
 
    aPolyPoly3D = rSource.aPolyPoly3D;
    aPolyNormals3D = rSource.aPolyNormals3D;
    aPolyTexture2D = rSource.aPolyTexture2D;
    bLineOnly = rSource.bLineOnly;
}
 
void E3dPolygonObj::CreateDefaultNormals()
{
    basegfx::B3DPolyPolygon aPolyNormals;
 
    // Create a complete tools::PolyPolygon with the plane normal
    for (sal_uInt32 a(0); a < aPolyPoly3D.count(); a++)
    {
        // Find source polygon
        const basegfx::B3DPolygon aPolygon(aPolyPoly3D.getB3DPolygon(a));
 
        // Creating a new polygon for the normal
        basegfx::B3DPolygon aNormals;
 
        // Get normal (and invert)
        basegfx::B3DVector aNormal(-aPolygon.getNormal());
 
        // Fill new polygon
        for (sal_uInt32 b(0); b < aPolygon.count(); b++)
        {
            aNormals.append(aNormal);
        }
 
        // Insert new polygon into the PolyPolygon
        aPolyNormals.append(aNormals);
    }
 
    // Set default normal
    SetPolyNormals3D(aPolyNormals);
}
 
void E3dPolygonObj::CreateDefaultTexture()
{
    basegfx::B2DPolyPolygon aPolyTexture;
    // Create a complete tools::PolyPolygon with the texture coordinates
    // The texture coordinates extend over X,Y and Z
    // on the whole extreme values in the range 0.0 .. 1.0
    for (sal_uInt32 a(0); a < aPolyPoly3D.count(); a++)
    {
        // Find source polygon
        const basegfx::B3DPolygon& aPolygon(aPolyPoly3D.getB3DPolygon(a));
 
        // Determine the total size of the object
        basegfx::B3DRange aVolume(basegfx::utils::getRange(aPolygon));
 
        // Get normal
        basegfx::B3DVector aNormal(aPolygon.getNormal());
        aNormal.setX(fabs(aNormal.getX()));
        aNormal.setY(fabs(aNormal.getY()));
        aNormal.setZ(fabs(aNormal.getZ()));
 
        // Decide which coordinates should be used as a source for the mapping
        sal_uInt16 nSourceMode = 0;
 
        // Determine the greatest degree of freedom
        if (aNormal.getX() <= aNormal.getY() || aNormal.getX() <= aNormal.getZ())
        {
            if (aNormal.getY() > aNormal.getZ())
            {
                // Y is the largest, use X,Z as mapping
                nSourceMode = 1;
            }
            else
            {
                // Z is the largest, use X,Y as mapping
                nSourceMode = 2;
            }
        }
 
        // Create new polygon for texture coordinates
        basegfx::B2DPolygon aTexture;
 
        // Fill new polygon
        for (sal_uInt32 b(0); b < aPolygon.count(); b++)
        {
            basegfx::B2DPoint aTex;
            const basegfx::B3DPoint aCandidate(aPolygon.getB3DPoint(b));
 
            switch (nSourceMode)
            {
                case 0: //Source is Y,Z
                    if (aVolume.getHeight())
                        aTex.setX((aCandidate.getY() - aVolume.getMinY()) / aVolume.getHeight());
                    if (aVolume.getDepth())
                        aTex.setY((aCandidate.getZ() - aVolume.getMinZ()) / aVolume.getDepth());
                    break;
 
                case 1: // Source is X,Z
                    if (aVolume.getWidth())
                        aTex.setX((aCandidate.getX() - aVolume.getMinX()) / aVolume.getWidth());
                    if (aVolume.getDepth())
                        aTex.setY((aCandidate.getZ() - aVolume.getMinZ()) / aVolume.getDepth());
                    break;
 
                case 2: // Source is X,Y
                    if (aVolume.getWidth())
                        aTex.setX((aCandidate.getX() - aVolume.getMinX()) / aVolume.getWidth());
                    if (aVolume.getHeight())
                        aTex.setY((aCandidate.getY() - aVolume.getMinY()) / aVolume.getHeight());
                    break;
            }
 
            aTexture.append(aTex);
        }
 
        // Insert new polygon into the PolyPolygon
        aPolyTexture.append(aTexture);
    }
 
    // Set default Texture coordinates
    SetPolyTexture2D(aPolyTexture);
}
 
E3dPolygonObj::~E3dPolygonObj() {}
 
SdrObjKind E3dPolygonObj::GetObjIdentifier() const { return SdrObjKind::E3D_Polygon; }
 
void E3dPolygonObj::SetPolyPolygon3D(const basegfx::B3DPolyPolygon& rNewPolyPoly3D)
{
    if (aPolyPoly3D != rNewPolyPoly3D)
    {
        // New PolyPolygon; copying
        aPolyPoly3D = rNewPolyPoly3D;
 
        // Create new geometry
        ActionChanged();
    }
}
 
void E3dPolygonObj::SetPolyNormals3D(const basegfx::B3DPolyPolygon& rNewPolyNormals3D)
{
    if (aPolyNormals3D != rNewPolyNormals3D)
    {
        // New PolyPolygon; copying
        aPolyNormals3D = rNewPolyNormals3D;
 
        // Create new geometry
        ActionChanged();
    }
}
 
void E3dPolygonObj::SetPolyTexture2D(const basegfx::B2DPolyPolygon& rNewPolyTexture2D)
{
    if (aPolyTexture2D != rNewPolyTexture2D)
    {
        // New PolyPolygon; copying
        aPolyTexture2D = rNewPolyTexture2D;
 
        // Create new geometry
        ActionChanged();
    }
}
 
// Convert the object into a group object consisting of 6 polygons
 
rtl::Reference<SdrObject> E3dPolygonObj::DoConvertToPolyObj(bool /*bBezier*/,
                                                            bool /*bAddText*/) const
{
    return nullptr;
}
 
rtl::Reference<SdrObject> E3dPolygonObj::CloneSdrObject(SdrModel& rTargetModel) const
{
    return new E3dPolygonObj(rTargetModel, *this);
}
 
void E3dPolygonObj::SetLineOnly(bool bNew)
{
    if (bNew != bLineOnly)
    {
        bLineOnly = bNew;
        ActionChanged();
    }
}
 
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