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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #include <drawinglayer/primitive2d/embedded3dprimitive2d.hxx>
21 : #include <basegfx/polygon/b2dpolygon.hxx>
22 : #include <basegfx/polygon/b2dpolygontools.hxx>
23 : #include <basegfx/color/bcolor.hxx>
24 : #include <drawinglayer/primitive2d/polygonprimitive2d.hxx>
25 : #include <basegfx/tools/canvastools.hxx>
26 : #include <drawinglayer/geometry/viewinformation2d.hxx>
27 : #include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
28 : #include <drawinglayer/geometry/viewinformation3d.hxx>
29 : #include <drawinglayer/processor3d/shadow3dextractor.hxx>
30 :
31 :
32 :
33 : using namespace com::sun::star;
34 :
35 :
36 :
37 : namespace drawinglayer
38 : {
39 : namespace primitive2d
40 : {
41 0 : bool Embedded3DPrimitive2D::impGetShadow3D(const geometry::ViewInformation2D& /*rViewInformation*/) const
42 : {
43 0 : osl::MutexGuard aGuard( m_aMutex );
44 :
45 : // create on demand
46 0 : if(!mbShadow3DChecked && getChildren3D().hasElements())
47 : {
48 : // create shadow extraction processor
49 : processor3d::Shadow3DExtractingProcessor aShadowProcessor(
50 0 : getViewInformation3D(),
51 0 : getObjectTransformation(),
52 0 : getLightNormal(),
53 : getShadowSlant(),
54 0 : getScene3DRange());
55 :
56 : // process local primitives
57 0 : aShadowProcessor.process(getChildren3D());
58 :
59 : // fetch result and set checked flag
60 0 : const_cast< Embedded3DPrimitive2D* >(this)->maShadowPrimitives = aShadowProcessor.getPrimitive2DSequence();
61 0 : const_cast< Embedded3DPrimitive2D* >(this)->mbShadow3DChecked = true;
62 : }
63 :
64 : // return if there are shadow primitives
65 0 : return maShadowPrimitives.hasElements();
66 : }
67 :
68 0 : Primitive2DSequence Embedded3DPrimitive2D::create2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const
69 : {
70 : // use info to create a yellow 2d rectangle, similar to empty 3d scenes and/or groups
71 0 : const basegfx::B2DRange aLocal2DRange(getB2DRange(rViewInformation));
72 0 : const basegfx::B2DPolygon aOutline(basegfx::tools::createPolygonFromRect(aLocal2DRange));
73 0 : const basegfx::BColor aYellow(1.0, 1.0, 0.0);
74 0 : const Primitive2DReference xRef(new PolygonHairlinePrimitive2D(aOutline, aYellow));
75 :
76 0 : return Primitive2DSequence(&xRef, 1L);
77 : }
78 :
79 0 : Embedded3DPrimitive2D::Embedded3DPrimitive2D(
80 : const primitive3d::Primitive3DSequence& rxChildren3D,
81 : const basegfx::B2DHomMatrix& rObjectTransformation,
82 : const geometry::ViewInformation3D& rViewInformation3D,
83 : const basegfx::B3DVector& rLightNormal,
84 : double fShadowSlant,
85 : const basegfx::B3DRange& rScene3DRange)
86 : : BufferedDecompositionPrimitive2D(),
87 : mxChildren3D(rxChildren3D),
88 : maObjectTransformation(rObjectTransformation),
89 : maViewInformation3D(rViewInformation3D),
90 : maLightNormal(rLightNormal),
91 : mfShadowSlant(fShadowSlant),
92 : maScene3DRange(rScene3DRange),
93 : maShadowPrimitives(),
94 : maB2DRange(),
95 0 : mbShadow3DChecked(false)
96 : {
97 0 : maLightNormal.normalize();
98 0 : }
99 :
100 0 : bool Embedded3DPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
101 : {
102 0 : if(BufferedDecompositionPrimitive2D::operator==(rPrimitive))
103 : {
104 0 : const Embedded3DPrimitive2D& rCompare = static_cast< const Embedded3DPrimitive2D& >(rPrimitive);
105 :
106 0 : return (primitive3d::arePrimitive3DSequencesEqual(getChildren3D(), rCompare.getChildren3D())
107 0 : && getObjectTransformation() == rCompare.getObjectTransformation()
108 0 : && getViewInformation3D() == rCompare.getViewInformation3D()
109 0 : && getLightNormal() == rCompare.getLightNormal()
110 0 : && getShadowSlant() == rCompare.getShadowSlant()
111 0 : && getScene3DRange() == rCompare.getScene3DRange());
112 : }
113 :
114 0 : return false;
115 : }
116 :
117 0 : basegfx::B2DRange Embedded3DPrimitive2D::getB2DRange(const geometry::ViewInformation2D& rViewInformation) const
118 : {
119 0 : if(maB2DRange.isEmpty())
120 : {
121 : // use the 3d transformation stack to create a projection of the 3D range
122 0 : basegfx::B3DRange a3DRange(primitive3d::getB3DRangeFromPrimitive3DSequence(getChildren3D(), getViewInformation3D()));
123 0 : a3DRange.transform(getViewInformation3D().getObjectToView());
124 :
125 : // create 2d range from projected 3d and transform with scene's object transformation
126 0 : basegfx::B2DRange aNewRange;
127 0 : aNewRange.expand(basegfx::B2DPoint(a3DRange.getMinX(), a3DRange.getMinY()));
128 0 : aNewRange.expand(basegfx::B2DPoint(a3DRange.getMaxX(), a3DRange.getMaxY()));
129 0 : aNewRange.transform(getObjectTransformation());
130 :
131 : // cehck for 3D shadows and their 2D projections. If those exist, they need to be
132 : // taken into account
133 0 : if(impGetShadow3D(rViewInformation))
134 : {
135 0 : const basegfx::B2DRange aShadow2DRange(getB2DRangeFromPrimitive2DSequence(maShadowPrimitives, rViewInformation));
136 :
137 0 : if(!aShadow2DRange.isEmpty())
138 : {
139 0 : aNewRange.expand(aShadow2DRange);
140 : }
141 : }
142 :
143 : // assign to buffered value
144 0 : const_cast< Embedded3DPrimitive2D* >(this)->maB2DRange = aNewRange;
145 : }
146 :
147 0 : return maB2DRange;
148 : }
149 :
150 : // provide unique ID
151 0 : ImplPrimitive2DIDBlock(Embedded3DPrimitive2D, PRIMITIVE2D_ID_EMBEDDED3DPRIMITIVE2D)
152 :
153 : } // end of namespace primitive2d
154 : } // end of namespace drawinglayer
155 :
156 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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