21dbf18064
Change-Id: I95918275653714577e2d6728dd3947c7fbb66d8f Reviewed-on: https://gerrit.libreoffice.org/c/core/+/121360 Tested-by: Jenkins Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
363 lines
14 KiB
C++
363 lines
14 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <drawinglayer/geometry/viewinformation3d.hxx>
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#include <basegfx/matrix/b3dhommatrix.hxx>
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#include <com/sun/star/beans/PropertyValue.hpp>
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#include <com/sun/star/geometry/AffineMatrix3D.hpp>
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#include <basegfx/utils/canvastools.hxx>
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#include <rtl/instance.hxx>
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#include <com/sun/star/uno/Sequence.hxx>
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using namespace com::sun::star;
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namespace drawinglayer::geometry
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{
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/** Implementation class for ViewInformation3D
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*/
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class ImpViewInformation3D
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{
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private:
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// ViewInformation3D implementation can change refcount, so we have only
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// two memory regions for pairs of ViewInformation3D/ImpViewInformation3D
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friend class ::drawinglayer::geometry::ViewInformation3D;
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// the 3D transformations
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// Object to World. This may change and being adapted when entering 3D transformation
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// groups
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basegfx::B3DHomMatrix maObjectTransformation;
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// World to Camera. This includes VRP, VPN and VUV camera coordinate system
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basegfx::B3DHomMatrix maOrientation;
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// Camera to Device with X,Y and Z [-1.0 .. 1.0]. This is the
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// 3D to 2D projection which may be parallel or perspective. When it is perspective,
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// the last line of the homogen matrix will NOT be unused
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basegfx::B3DHomMatrix maProjection;
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// Device to View with X,Y and Z [0.0 .. 1.0]. This converts from -1 to 1 coordinates
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// in camera coordinate system to 0 to 1 in unit 2D coordinates. This way it stays
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// view-independent. To get discrete coordinates, the 2D transformation of a scene
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// as 2D object needs to be involved
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basegfx::B3DHomMatrix maDeviceToView;
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// Object to View is the linear combination of all four transformations. It's
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// buffered to avoid too much matrix multiplying and created on demand
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basegfx::B3DHomMatrix maObjectToView;
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// the point in time
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double mfViewTime;
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// the extra PropertyValues; does not contain the transformations
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uno::Sequence< beans::PropertyValue > mxExtendedInformation;
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// the local UNO API strings
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static OUString getNamePropertyObjectTransformation()
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{
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return "ObjectTransformation";
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}
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static OUString getNamePropertyOrientation()
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{
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return "Orientation";
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}
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static OUString getNamePropertyProjection()
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{
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return "Projection";
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}
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static OUString getNamePropertyProjection_30()
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{
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return "Projection30";
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}
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static OUString getNamePropertyProjection_31()
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{
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return "Projection31";
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}
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static OUString getNamePropertyProjection_32()
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{
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return "Projection32";
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}
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static OUString getNamePropertyProjection_33()
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{
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return "Projection33";
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}
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static OUString getNamePropertyDeviceToView()
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{
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return "DeviceToView";
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}
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static OUString getNamePropertyTime()
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{
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return "Time";
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}
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// a central PropertyValue parsing method to allow transportation of
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// all ViewParameters using UNO API
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void impInterpretPropertyValues(const uno::Sequence< beans::PropertyValue >& rViewParameters)
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{
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if(!rViewParameters.hasElements())
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return;
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const sal_Int32 nCount(rViewParameters.getLength());
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sal_Int32 nExtendedInsert(0);
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// prepare extended information for filtering. Maximum size is nCount
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mxExtendedInformation.realloc(nCount);
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for(sal_Int32 a(0); a < nCount; a++)
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{
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const beans::PropertyValue& rProp = rViewParameters[a];
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if(rProp.Name == getNamePropertyObjectTransformation())
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{
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css::geometry::AffineMatrix3D aAffineMatrix3D;
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rProp.Value >>= aAffineMatrix3D;
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maObjectTransformation = basegfx::unotools::homMatrixFromAffineMatrix3D(aAffineMatrix3D);
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}
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else if(rProp.Name == getNamePropertyOrientation())
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{
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css::geometry::AffineMatrix3D aAffineMatrix3D;
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rProp.Value >>= aAffineMatrix3D;
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maOrientation = basegfx::unotools::homMatrixFromAffineMatrix3D(aAffineMatrix3D);
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}
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else if(rProp.Name == getNamePropertyProjection())
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{
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// projection may be defined using a frustum in which case the last line of
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// the 4x4 matrix is not (0,0,0,1). Since AffineMatrix3D does not support that,
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// these four values need to be treated extra
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const double f_30(maProjection.get(3, 0));
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const double f_31(maProjection.get(3, 1));
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const double f_32(maProjection.get(3, 2));
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const double f_33(maProjection.get(3, 3));
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css::geometry::AffineMatrix3D aAffineMatrix3D;
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rProp.Value >>= aAffineMatrix3D;
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maProjection = basegfx::unotools::homMatrixFromAffineMatrix3D(aAffineMatrix3D);
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maProjection.set(3, 0, f_30);
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maProjection.set(3, 1, f_31);
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maProjection.set(3, 2, f_32);
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maProjection.set(3, 3, f_33);
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}
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else if(rProp.Name == getNamePropertyProjection_30())
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{
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double f_30(0.0);
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rProp.Value >>= f_30;
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maProjection.set(3, 0, f_30);
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}
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else if(rProp.Name == getNamePropertyProjection_31())
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{
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double f_31(0.0);
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rProp.Value >>= f_31;
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maProjection.set(3, 1, f_31);
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}
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else if(rProp.Name == getNamePropertyProjection_32())
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{
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double f_32(0.0);
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rProp.Value >>= f_32;
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maProjection.set(3, 2, f_32);
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}
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else if(rProp.Name == getNamePropertyProjection_33())
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{
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double f_33(1.0);
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rProp.Value >>= f_33;
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maProjection.set(3, 3, f_33);
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}
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else if(rProp.Name == getNamePropertyDeviceToView())
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{
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css::geometry::AffineMatrix3D aAffineMatrix3D;
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rProp.Value >>= aAffineMatrix3D;
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maDeviceToView = basegfx::unotools::homMatrixFromAffineMatrix3D(aAffineMatrix3D);
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}
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else if(rProp.Name == getNamePropertyTime())
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{
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rProp.Value >>= mfViewTime;
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}
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else
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{
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// extra information; add to filtered information
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mxExtendedInformation[nExtendedInsert++] = rProp;
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}
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}
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// extra information size is now known; realloc to final size
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mxExtendedInformation.realloc(nExtendedInsert);
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}
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public:
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ImpViewInformation3D(
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const basegfx::B3DHomMatrix& rObjectTransformation,
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const basegfx::B3DHomMatrix& rOrientation,
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const basegfx::B3DHomMatrix& rProjection,
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const basegfx::B3DHomMatrix& rDeviceToView,
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double fViewTime,
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const uno::Sequence< beans::PropertyValue >& rExtendedParameters)
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: maObjectTransformation(rObjectTransformation),
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maOrientation(rOrientation),
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maProjection(rProjection),
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maDeviceToView(rDeviceToView),
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mfViewTime(fViewTime)
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{
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impInterpretPropertyValues(rExtendedParameters);
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}
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explicit ImpViewInformation3D(const uno::Sequence< beans::PropertyValue >& rViewParameters)
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: mfViewTime()
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{
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impInterpretPropertyValues(rViewParameters);
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}
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ImpViewInformation3D()
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: mfViewTime()
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{
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}
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const basegfx::B3DHomMatrix& getObjectTransformation() const { return maObjectTransformation; }
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const basegfx::B3DHomMatrix& getOrientation() const { return maOrientation; }
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const basegfx::B3DHomMatrix& getProjection() const { return maProjection; }
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const basegfx::B3DHomMatrix& getDeviceToView() const { return maDeviceToView; }
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double getViewTime() const { return mfViewTime; }
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const basegfx::B3DHomMatrix& getObjectToView() const
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{
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// on demand WorldToView creation
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if(maObjectToView.isIdentity())
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{
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const_cast< ImpViewInformation3D* >(this)->maObjectToView = maDeviceToView * maProjection * maOrientation * maObjectTransformation;
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}
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return maObjectToView;
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}
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const uno::Sequence< beans::PropertyValue >& getExtendedInformationSequence() const
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{
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return mxExtendedInformation;
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}
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bool operator==(const ImpViewInformation3D& rCandidate) const
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{
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return (maObjectTransformation == rCandidate.maObjectTransformation
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&& maOrientation == rCandidate.maOrientation
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&& maProjection == rCandidate.maProjection
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&& maDeviceToView == rCandidate.maDeviceToView
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&& mfViewTime == rCandidate.mfViewTime
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&& mxExtendedInformation == rCandidate.mxExtendedInformation);
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}
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};
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} // end of namespace drawinglayer::geometry
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namespace drawinglayer::geometry
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{
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namespace
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{
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struct theGlobalDefault :
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public rtl::Static< ViewInformation3D::ImplType, theGlobalDefault > {};
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}
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ViewInformation3D::ViewInformation3D(
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const basegfx::B3DHomMatrix& rObjectObjectTransformation,
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const basegfx::B3DHomMatrix& rOrientation,
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const basegfx::B3DHomMatrix& rProjection,
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const basegfx::B3DHomMatrix& rDeviceToView,
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double fViewTime,
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const uno::Sequence< beans::PropertyValue >& rExtendedParameters)
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: mpViewInformation3D(ImpViewInformation3D(
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rObjectObjectTransformation, rOrientation, rProjection,
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rDeviceToView, fViewTime, rExtendedParameters))
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{
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}
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ViewInformation3D::ViewInformation3D(const uno::Sequence< beans::PropertyValue >& rViewParameters)
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: mpViewInformation3D(ImpViewInformation3D(rViewParameters))
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{
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}
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ViewInformation3D::ViewInformation3D()
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: mpViewInformation3D(theGlobalDefault::get())
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{
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}
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ViewInformation3D::ViewInformation3D(const ViewInformation3D&) = default;
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ViewInformation3D::ViewInformation3D(ViewInformation3D&&) = default;
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ViewInformation3D::~ViewInformation3D() = default;
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bool ViewInformation3D::isDefault() const
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{
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return mpViewInformation3D.same_object(theGlobalDefault::get());
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}
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ViewInformation3D& ViewInformation3D::operator=(const ViewInformation3D&) = default;
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ViewInformation3D& ViewInformation3D::operator=(ViewInformation3D&&) = default;
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bool ViewInformation3D::operator==(const ViewInformation3D& rCandidate) const
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{
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return rCandidate.mpViewInformation3D == mpViewInformation3D;
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}
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const basegfx::B3DHomMatrix& ViewInformation3D::getObjectTransformation() const
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{
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return mpViewInformation3D->getObjectTransformation();
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}
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const basegfx::B3DHomMatrix& ViewInformation3D::getOrientation() const
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{
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return mpViewInformation3D->getOrientation();
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}
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const basegfx::B3DHomMatrix& ViewInformation3D::getProjection() const
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{
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return mpViewInformation3D->getProjection();
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}
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const basegfx::B3DHomMatrix& ViewInformation3D::getDeviceToView() const
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{
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return mpViewInformation3D->getDeviceToView();
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}
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const basegfx::B3DHomMatrix& ViewInformation3D::getObjectToView() const
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{
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return mpViewInformation3D->getObjectToView();
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}
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double ViewInformation3D::getViewTime() const
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{
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return mpViewInformation3D->getViewTime();
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}
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const uno::Sequence< beans::PropertyValue >& ViewInformation3D::getExtendedInformationSequence() const
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{
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return mpViewInformation3D->getExtendedInformationSequence();
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}
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} // end of namespace
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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