Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

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

1 files changed, 217 insertions, 0 deletions

diff --git a/include/tools/b3dtrans.hxx b/include/tools/b3dtrans.hxx
new file mode 100644
index 000000000..2f6752e08
--- /dev/null
+++ b/include/tools/b3dtrans.hxx
@@ -0,0 +1,217 @@
+/* -*- 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 .
+ */
+
+#ifndef INCLUDED_TOOLS_B3DTRANS_HXX
+#define INCLUDED_TOOLS_B3DTRANS_HXX
+
+#define ZBUFFER_DEPTH_RANGE         (double(256L * 256L * 256L))
+
+#include <basegfx/matrix/b3dhommatrix.hxx>
+#include <tools/gen.hxx>
+#include <basegfx/matrix/b2dhommatrix.hxx>
+#include <basegfx/point/b3dpoint.hxx>
+#include <basegfx/vector/b3dvector.hxx>
+#include <tools/toolsdllapi.h>
+
+/// Transformation sets for 3D output
+class SAL_WARN_UNUSED TOOLS_DLLPUBLIC B3dTransformationSet
+{
+private:
+    // Object Matrix Object -> World
+    basegfx::B3DHomMatrix maObjectTrans;
+    basegfx::B3DHomMatrix maInvObjectTrans;
+
+    // Orientation Matrix
+    basegfx::B3DHomMatrix maOrientation;
+    basegfx::B3DHomMatrix maInvOrientation;
+
+    // Projection Matrix
+    basegfx::B3DHomMatrix maProjection;
+    basegfx::B3DHomMatrix maInvProjection;
+
+    // Texture Matrices
+    basegfx::B2DHomMatrix maTexture;
+
+    // Parameters for ViewportTransformation
+    basegfx::B3DVector    maScale;
+    basegfx::B3DVector    maTranslate;
+
+    // ViewPlane DeviceRectangle (user-defined)
+    double                mfLeftBound;
+    double                mfRightBound;
+    double                mfBottomBound;
+    double                mfTopBound;
+
+    // Aspect ratio of 3D transformation (Y / X)
+    // default: 1:1 -> 1.0
+    // Disable with value 0.0
+    double                mfRatio;
+
+    // Viewport area in logical coordinates
+    tools::Rectangle             maViewportRectangle;
+    // Visible area within viewport
+    tools::Rectangle             maVisibleRectangle;
+
+    // Actual coordinates as set by CalcViewport
+    // of visible viewport area (logical coordinates)
+    tools::Rectangle             maSetBound;
+
+    // Flags
+    bool mbPerspective              : 1;
+    bool mbProjectionValid          : 1;
+
+public:
+    B3dTransformationSet();
+    virtual ~B3dTransformationSet();
+
+    B3dTransformationSet(B3dTransformationSet const &) = default;
+    B3dTransformationSet(B3dTransformationSet &&) = default;
+    B3dTransformationSet & operator =(B3dTransformationSet const &) = default;
+    B3dTransformationSet & operator =(B3dTransformationSet &&) = default;
+
+    void Reset();
+
+    /** Set the orientation
+
+        @param vVRP the View Reference Point (VRP)
+        @param vVPN the View Plane Normal (VPN)
+        @param vVUP the View Up Plane (VUP)
+    */
+    void SetOrientation(
+        const basegfx::B3DPoint& rVRP = basegfx::B3DPoint(0.0,0.0,1.0),
+        const basegfx::B3DVector& rVPN = basegfx::B3DVector(0.0,0.0,1.0),
+        const basegfx::B3DVector& rVUP = basegfx::B3DVector(0.0,1.0,0.0));
+
+    // Projection
+    void SetProjection(const basegfx::B3DHomMatrix& mProject);
+    const basegfx::B3DHomMatrix& GetProjection();
+
+    // Texture
+
+    // aspect ratio accessors and the defined method of keeping defined aspect ratio
+    double GetRatio() const { return mfRatio; }
+    void SetRatio(double fNew);
+
+    // Parameters of ViewportTransformation
+    void SetDeviceRectangle(double fL=-1.0, double fR=1.0,
+                            double fB=-1.0, double fT=1.0);
+    double GetDeviceRectangleWidth() const { return mfRightBound - mfLeftBound; }
+
+    void SetPerspective(bool bNew);
+
+    void SetViewportRectangle(tools::Rectangle const & rRect, tools::Rectangle const & rVisible);
+    void SetViewportRectangle(tools::Rectangle const & rRect) { SetViewportRectangle(rRect, rRect); }
+
+    void CalcViewport();
+
+    // Direct accessors for miscellaneous transformations
+    basegfx::B3DPoint WorldToEyeCoor(const basegfx::B3DPoint& rVec);
+    basegfx::B3DPoint EyeToWorldCoor(const basegfx::B3DPoint& rVec);
+
+    static void Frustum(
+        basegfx::B3DHomMatrix& rTarget,
+        double fLeft = -1.0, double fRight = 1.0,
+        double fBottom = -1.0, double fTop = 1.0,
+        double fNear = 0.001, double fFar = 1.0);
+    static void Ortho(
+        basegfx::B3DHomMatrix& rTarget,
+        double fLeft = -1.0, double fRight = 1.0,
+        double fBottom = -1.0, double fTop = 1.0,
+        double fNear = 0.0, double fFar = 1.0);
+    static void Orientation(
+        basegfx::B3DHomMatrix& rTarget,
+        const basegfx::B3DPoint& aVRP = basegfx::B3DPoint(0.0,0.0,1.0),
+        basegfx::B3DVector aVPN = basegfx::B3DVector(0.0,0.0,1.0),
+        basegfx::B3DVector aVUP = basegfx::B3DVector(0.0,1.0,0.0));
+
+protected:
+    void PostSetObjectTrans();
+    void PostSetOrientation();
+    void PostSetProjection();
+
+    virtual void DeviceRectangleChange();
+};
+
+/** Viewport for B3D
+
+    Uses a simplified model, in which a point is described using a View
+    Reference Point (VRP).
+*/
+class SAL_WARN_UNUSED TOOLS_DLLPUBLIC B3dViewport : public B3dTransformationSet
+{
+private:
+    basegfx::B3DPoint           aVRP;   // View Reference Point
+    basegfx::B3DVector          aVPN;   // View Plane Normal
+    basegfx::B3DVector          aVUV;   // View Up Vector
+
+public:
+    B3dViewport();
+    virtual ~B3dViewport() override;
+
+    B3dViewport(B3dViewport const &) = default;
+    B3dViewport(B3dViewport &&) = default;
+    B3dViewport & operator =(B3dViewport const &) = default;
+    B3dViewport & operator =(B3dViewport &&) = default;
+
+    void SetVUV(const basegfx::B3DVector& rNewVUV);
+    void SetViewportValues(
+        const basegfx::B3DPoint& rNewVRP,
+        const basegfx::B3DVector& rNewVPN,
+        const basegfx::B3DVector& rNewVUV);
+
+    const basegfx::B3DPoint&    GetVRP() const  { return aVRP; }
+    const basegfx::B3DVector&   GetVPN() const  { return aVPN; }
+    const basegfx::B3DVector&   GetVUV() const  { return aVUV; }
+
+protected:
+    void CalcOrientation();
+};
+
+// B3D camera
+
+class SAL_WARN_UNUSED TOOLS_DLLPUBLIC B3dCamera final : public B3dViewport
+{
+public:
+    B3dCamera(
+        const basegfx::B3DPoint& rPos = basegfx::B3DPoint(0.0, 0.0, 1.0),
+        const basegfx::B3DVector& rLkAt = basegfx::B3DVector(0.0, 0.0, 0.0),
+        double fFocLen = 35.0, double fBnkAng = 0.0);
+    virtual ~B3dCamera() override;
+
+    B3dCamera(B3dCamera const &) = default;
+    B3dCamera(B3dCamera &&) = default;
+    B3dCamera & operator =(B3dCamera const &) = default;
+    B3dCamera & operator =(B3dCamera &&) = default;
+
+private:
+    void CalcNewViewportValues();
+    void CalcFocalLength();
+
+    virtual void DeviceRectangleChange() override;
+
+    basegfx::B3DPoint       aPosition;
+    basegfx::B3DVector  aLookAt;
+    double                  fFocalLength;
+    double                  fBankAngle;
+
+};
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */