Adding upstream version 4:24.2.0.upstream/4%24.2.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 421 insertions, 0 deletions

diff --git a/include/basegfx/raster/rasterconvert3d.hxx b/include/basegfx/raster/rasterconvert3d.hxx
new file mode 100644
index 0000000000..83f753e318
--- /dev/null
+++ b/include/basegfx/raster/rasterconvert3d.hxx
@@ -0,0 +1,421 @@
+/* -*- 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 .
+ */
+
+#pragma once
+
+#include <config_options.h>
+#include <sal/types.h>
+#include <vector>
+
+#include <osl/diagnose.h>
+
+#include <basegfx/color/bcolor.hxx>
+#include <basegfx/vector/b3dvector.hxx>
+#include <basegfx/point/b2dpoint.hxx>
+#include <basegfx/basegfxdllapi.h>
+
+namespace basegfx
+{
+    class B3DPolygon;
+    class B3DPolyPolygon;
+}
+
+// interpolators for double precision
+
+namespace basegfx
+{
+    class ip_single
+    {
+    private:
+        double                                      mfVal;
+        double                                      mfInc;
+
+    public:
+        ip_single()
+        :   mfVal(0.0),
+            mfInc(0.0)
+        {}
+
+        ip_single(double fVal, double fInc)
+        :   mfVal(fVal),
+            mfInc(fInc)
+        {}
+
+        double getVal() const { return mfVal; }
+        double getInc() const { return mfInc; }
+
+        void increment(double fStep) { mfVal += fStep * mfInc; }
+    };
+
+    class ip_double
+    {
+    private:
+        ip_single                                   maX;
+        ip_single                                   maY;
+
+    public:
+        ip_double()
+        {}
+
+        ip_double(double fXVal, double fXInc, double fYVal, double fYInc)
+        :   maX(fXVal, fXInc),
+            maY(fYVal, fYInc)
+        {}
+
+        const ip_single& getX() const { return maX; }
+        const ip_single& getY() const { return maY; }
+
+        void increment(double fStep) { maX.increment(fStep); maY.increment(fStep); }
+    };
+
+    class ip_triple
+    {
+    private:
+        ip_single                                   maX;
+        ip_single                                   maY;
+        ip_single                                   maZ;
+
+    public:
+        ip_triple()
+        {}
+
+        ip_triple(double fXVal, double fXInc, double fYVal, double fYInc, double fZVal, double fZInc)
+        :   maX(fXVal, fXInc),
+            maY(fYVal, fYInc),
+            maZ(fZVal, fZInc)
+        {}
+
+        const ip_single& getX() const { return maX; }
+        const ip_single& getY() const { return maY; }
+        const ip_single& getZ() const { return maZ; }
+
+        void increment(double fStep) { maX.increment(fStep); maY.increment(fStep); maZ.increment(fStep); }
+    };
+
+    // InterpolatorProvider3D to have a common source for allocating interpolators
+    // which may then be addressed using the index to the vectors
+
+    #define SCANLINE_EMPTY_INDEX (0xffffffff)
+
+    class InterpolatorProvider3D
+    {
+    private:
+        ::std::vector< ip_triple >                  maColorInterpolators;
+        ::std::vector< ip_triple >                  maNormalInterpolators;
+        ::std::vector< ip_double >                  maTextureInterpolators;
+        ::std::vector< ip_triple >                  maInverseTextureInterpolators;
+
+    protected:
+        sal_uInt32 addColorInterpolator(const BColor& rA, const BColor& rB, double fInvYDelta)
+        {
+            double aDeltaRed(rB.getRed() - rA.getRed());
+
+            if(fTools::equalZero(aDeltaRed))
+            {
+                aDeltaRed = 0.0;
+            }
+            else
+            {
+                aDeltaRed *= fInvYDelta;
+            }
+
+            double aDeltaGreen(rB.getGreen() - rA.getGreen());
+
+            if(fTools::equalZero(aDeltaGreen))
+            {
+                aDeltaGreen = 0.0;
+            }
+            else
+            {
+                aDeltaGreen *= fInvYDelta;
+            }
+
+            double aDeltaBlue(rB.getBlue() - rA.getBlue());
+
+            if(fTools::equalZero(aDeltaBlue))
+            {
+                aDeltaBlue = 0.0;
+            }
+            else
+            {
+                aDeltaBlue *= fInvYDelta;
+            }
+
+            maColorInterpolators.push_back(
+                ip_triple(
+                    rA.getRed(), aDeltaRed,
+                    rA.getGreen(), aDeltaGreen,
+                    rA.getBlue(), aDeltaBlue));
+
+            return (maColorInterpolators.size() - 1);
+        }
+
+        sal_uInt32 addNormalInterpolator(const B3DVector& rA, const B3DVector& rB, double fInvYDelta)
+        {
+            double aDeltaX(rB.getX() - rA.getX());
+
+            if(fTools::equalZero(aDeltaX))
+            {
+                aDeltaX = 0.0;
+            }
+            else
+            {
+                aDeltaX *= fInvYDelta;
+            }
+
+            double aDeltaY(rB.getY() - rA.getY());
+
+            if(fTools::equalZero(aDeltaY))
+            {
+                aDeltaY = 0.0;
+            }
+            else
+            {
+                aDeltaY *= fInvYDelta;
+            }
+
+            double aDeltaZ(rB.getZ() - rA.getZ());
+
+            if(fTools::equalZero(aDeltaZ))
+            {
+                aDeltaZ = 0.0;
+            }
+            else
+            {
+                aDeltaZ *= fInvYDelta;
+            }
+
+            maNormalInterpolators.push_back(
+                ip_triple(
+                    rA.getX(), aDeltaX,
+                    rA.getY(), aDeltaY,
+                    rA.getZ(), aDeltaZ));
+
+            return (maNormalInterpolators.size() - 1);
+        }
+
+        sal_uInt32 addTextureInterpolator(const B2DPoint& rA, const B2DPoint& rB, double fInvYDelta)
+        {
+            double aDeltaX(rB.getX() - rA.getX());
+
+            if(fTools::equalZero(aDeltaX))
+            {
+                aDeltaX = 0.0;
+            }
+            else
+            {
+                aDeltaX *= fInvYDelta;
+            }
+
+            double aDeltaY(rB.getY() - rA.getY());
+
+            if(fTools::equalZero(aDeltaY))
+            {
+                aDeltaY = 0.0;
+            }
+            else
+            {
+                aDeltaY *= fInvYDelta;
+            }
+
+            maTextureInterpolators.push_back(
+                ip_double(
+                    rA.getX(), aDeltaX,
+                    rA.getY(), aDeltaY));
+
+            return (maTextureInterpolators.size() - 1);
+        }
+
+        sal_uInt32 addInverseTextureInterpolator(const B2DPoint& rA, const B2DPoint& rB, double fZEyeA, double fZEyeB, double fInvYDelta)
+        {
+            double fZDelta(fZEyeB - fZEyeA);
+            const double fInvZEyeA(fTools::equalZero(fZEyeA) ? fZEyeA : 1.0 / fZEyeA);
+            double fInvZEyeB(fInvZEyeA);
+
+            if(fTools::equalZero(fZDelta))
+            {
+                fZDelta = 0.0;
+            }
+            else
+            {
+                fInvZEyeB = fTools::equalZero(fZEyeB) ? fZEyeB : 1.0 / fZEyeB;
+                fZDelta = (fInvZEyeB - fInvZEyeA) * fInvYDelta;
+            }
+
+            const B2DPoint aInvA(rA * fInvZEyeA);
+            const B2DPoint aInvB(rB * fInvZEyeB);
+            const double aDeltaX((aInvB.getX() - aInvA.getX()) * fInvYDelta);
+            const double aDeltaY((aInvB.getY() - aInvA.getY()) * fInvYDelta);
+
+            maInverseTextureInterpolators.push_back(
+                ip_triple(
+                    aInvA.getX(), aDeltaX,
+                    aInvA.getY(), aDeltaY,
+                    fInvZEyeA, fZDelta));
+
+            return (maInverseTextureInterpolators.size() - 1);
+        }
+
+        void reset()
+        {
+            maColorInterpolators.clear();
+            maNormalInterpolators.clear();
+            maTextureInterpolators.clear();
+            maInverseTextureInterpolators.clear();
+        }
+
+    public:
+        InterpolatorProvider3D() {}
+
+        ::std::vector< ip_triple >& getColorInterpolators() { return maColorInterpolators; }
+        ::std::vector< ip_triple >& getNormalInterpolators() { return maNormalInterpolators; }
+        ::std::vector< ip_double >& getTextureInterpolators() { return maTextureInterpolators; }
+        ::std::vector< ip_triple >& getInverseTextureInterpolators() { return maInverseTextureInterpolators; }
+    };
+
+    // RasterConversionLineEntry3D for Rasterconversion of 3D PolyPolygons
+
+    class RasterConversionLineEntry3D
+    {
+    private:
+        ip_single                                   maX;
+        ip_single                                   maZ;
+        sal_Int32                                   mnY;
+        sal_uInt32                                  mnCount;
+
+        sal_uInt32                                  mnColorIndex;
+        sal_uInt32                                  mnNormalIndex;
+        sal_uInt32                                  mnTextureIndex;
+        sal_uInt32                                  mnInverseTextureIndex;
+
+    public:
+        RasterConversionLineEntry3D(const double& rfX, const double& rfDeltaX, const double& rfZ, const double& rfDeltaZ, sal_Int32 nY, sal_uInt32 nCount)
+        :   maX(rfX, rfDeltaX),
+            maZ(rfZ, rfDeltaZ),
+            mnY(nY),
+            mnCount(nCount),
+            mnColorIndex(SCANLINE_EMPTY_INDEX),
+            mnNormalIndex(SCANLINE_EMPTY_INDEX),
+            mnTextureIndex(SCANLINE_EMPTY_INDEX),
+            mnInverseTextureIndex(SCANLINE_EMPTY_INDEX)
+        {}
+
+        void setColorIndex(sal_uInt32 nIndex) { mnColorIndex = nIndex; }
+        void setNormalIndex(sal_uInt32 nIndex) { mnNormalIndex = nIndex; }
+        void setTextureIndex(sal_uInt32 nIndex) { mnTextureIndex = nIndex; }
+        void setInverseTextureIndex(sal_uInt32 nIndex) { mnInverseTextureIndex = nIndex; }
+
+        bool operator<(const RasterConversionLineEntry3D& rComp) const
+        {
+            if(mnY == rComp.mnY)
+            {
+                return maX.getVal() < rComp.maX.getVal();
+            }
+
+            return mnY < rComp.mnY;
+        }
+
+        bool decrementRasterConversionLineEntry3D(sal_uInt32 nStep)
+        {
+            if(nStep >= mnCount)
+            {
+                return false;
+            }
+            else
+            {
+                mnCount -= nStep;
+                return true;
+            }
+        }
+
+        void incrementRasterConversionLineEntry3D(sal_uInt32 nStep, InterpolatorProvider3D& rProvider)
+        {
+            const double fStep(static_cast<double>(nStep));
+            maX.increment(fStep);
+            maZ.increment(fStep);
+            mnY += nStep;
+
+            if(SCANLINE_EMPTY_INDEX != mnColorIndex)
+            {
+                rProvider.getColorInterpolators()[mnColorIndex].increment(fStep);
+            }
+
+            if(SCANLINE_EMPTY_INDEX != mnNormalIndex)
+            {
+                rProvider.getNormalInterpolators()[mnNormalIndex].increment(fStep);
+            }
+
+            if(SCANLINE_EMPTY_INDEX != mnTextureIndex)
+            {
+                rProvider.getTextureInterpolators()[mnTextureIndex].increment(fStep);
+            }
+
+            if(SCANLINE_EMPTY_INDEX != mnInverseTextureIndex)
+            {
+                rProvider.getInverseTextureInterpolators()[mnInverseTextureIndex].increment(fStep);
+            }
+        }
+
+        // data read access
+        const ip_single& getX() const { return maX; }
+        sal_Int32 getY() const { return mnY; }
+        const ip_single& getZ() const { return maZ; }
+        sal_uInt32 getColorIndex() const { return mnColorIndex; }
+        sal_uInt32 getNormalIndex() const { return mnNormalIndex; }
+        sal_uInt32 getTextureIndex() const { return mnTextureIndex; }
+        sal_uInt32 getInverseTextureIndex() const { return mnInverseTextureIndex; }
+    };
+
+    // the basic RasterConverter itself. Only one method needs to be overridden. The
+    // class itself is pure virtual
+
+    class UNLESS_MERGELIBS(BASEGFX_DLLPUBLIC) RasterConverter3D : public InterpolatorProvider3D
+    {
+    private:
+        // the line entries for an area conversion run
+        ::std::vector< RasterConversionLineEntry3D >            maLineEntries;
+
+        struct lineComparator
+        {
+            bool operator()(const RasterConversionLineEntry3D* pA, const RasterConversionLineEntry3D* pB)
+            {
+                OSL_ENSURE(pA && pB, "lineComparator: empty pointer (!)");
+                return pA->getX().getVal() < pB->getX().getVal();
+            }
+        };
+
+        SAL_DLLPRIVATE void addArea(const B3DPolygon& rFill, const B3DHomMatrix* pViewToEye);
+        SAL_DLLPRIVATE void addArea(const B3DPolyPolygon& rFill, const B3DHomMatrix* pViewToEye);
+        SAL_DLLPRIVATE void addEdge(const B3DPolygon& rFill, sal_uInt32 a, sal_uInt32 b, const B3DHomMatrix* pViewToEye);
+
+        SAL_DLLPRIVATE void rasterconvertB3DArea(sal_Int32 nStartLine, sal_Int32 nStopLine);
+        SAL_DLLPRIVATE void rasterconvertB3DEdge(const B3DPolygon& rLine, sal_uInt32 nA, sal_uInt32 nB, sal_Int32 nStartLine, sal_Int32 nStopLine, sal_uInt16 nLineWidth);
+
+        virtual void processLineSpan(const RasterConversionLineEntry3D& rA, const RasterConversionLineEntry3D& rB, sal_Int32 nLine, sal_uInt32 nSpanCount) = 0;
+
+    public:
+        RasterConverter3D();
+        virtual ~RasterConverter3D();
+
+        void rasterconvertB3DPolyPolygon(const B3DPolyPolygon& rFill, const B3DHomMatrix* pViewToEye, sal_Int32 nStartLine, sal_Int32 nStopLine);
+        void rasterconvertB3DPolygon(const B3DPolygon& rLine, sal_Int32 nStartLine, sal_Int32 nStopLine, sal_uInt16 nLineWidth);
+    };
+} // end of namespace basegfx
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */