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| -rw-r--r-- | include/tools/b3dtrans.hxx | 217 |
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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: */ |