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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/processor3d/cutfindprocessor3d.hxx>
21 : #include <drawinglayer/primitive3d/drawinglayer_primitivetypes3d.hxx>
22 : #include <drawinglayer/primitive3d/transformprimitive3d.hxx>
23 : #include <drawinglayer/primitive3d/hatchtextureprimitive3d.hxx>
24 : #include <drawinglayer/primitive3d/polypolygonprimitive3d.hxx>
25 : #include <basegfx/polygon/b3dpolygon.hxx>
26 : #include <basegfx/polygon/b3dpolygontools.hxx>
27 : #include <basegfx/polygon/b3dpolypolygontools.hxx>
28 : #include <drawinglayer/primitive3d/hiddengeometryprimitive3d.hxx>
29 :
30 :
31 :
32 : namespace drawinglayer
33 : {
34 : namespace processor3d
35 : {
36 0 : CutFindProcessor::CutFindProcessor(const geometry::ViewInformation3D& rViewInformation,
37 : const basegfx::B3DPoint& rFront,
38 : const basegfx::B3DPoint& rBack,
39 : bool bAnyHit)
40 : : BaseProcessor3D(rViewInformation),
41 : maFront(rFront),
42 : maBack(rBack),
43 : maResult(),
44 : maCombinedTransform(),
45 : mbAnyHit(bAnyHit),
46 0 : mbUseInvisiblePrimitiveContent(true)
47 : {
48 0 : }
49 :
50 0 : void CutFindProcessor::processBasePrimitive3D(const primitive3d::BasePrimitive3D& rCandidate)
51 : {
52 0 : if(getAnyHit() && maResult.size())
53 : {
54 : // stop processing as soon as a hit was recognized
55 0 : return;
56 : }
57 :
58 : // it is a BasePrimitive3D implementation, use getPrimitive3DID() call for switch
59 0 : switch(rCandidate.getPrimitive3DID())
60 : {
61 : case PRIMITIVE3D_ID_TRANSFORMPRIMITIVE3D :
62 : {
63 : // transform group.
64 0 : const primitive3d::TransformPrimitive3D& rPrimitive = static_cast< const primitive3d::TransformPrimitive3D& >(rCandidate);
65 :
66 : // remember old and transform front, back to object coordinates
67 0 : const basegfx::B3DPoint aLastFront(maFront);
68 0 : const basegfx::B3DPoint aLastBack(maBack);
69 0 : basegfx::B3DHomMatrix aInverseTrans(rPrimitive.getTransformation());
70 0 : aInverseTrans.invert();
71 0 : maFront *= aInverseTrans;
72 0 : maBack *= aInverseTrans;
73 :
74 : // remember current and create new transformation; add new object transform from right side
75 0 : const geometry::ViewInformation3D aLastViewInformation3D(getViewInformation3D());
76 : const geometry::ViewInformation3D aNewViewInformation3D(
77 0 : aLastViewInformation3D.getObjectTransformation() * rPrimitive.getTransformation(),
78 0 : aLastViewInformation3D.getOrientation(),
79 0 : aLastViewInformation3D.getProjection(),
80 0 : aLastViewInformation3D.getDeviceToView(),
81 : aLastViewInformation3D.getViewTime(),
82 0 : aLastViewInformation3D.getExtendedInformationSequence());
83 0 : updateViewInformation(aNewViewInformation3D);
84 :
85 : // #i102956# remember needed back-transform for found cuts (combine from right side)
86 0 : const basegfx::B3DHomMatrix aLastCombinedTransform(maCombinedTransform);
87 0 : maCombinedTransform = maCombinedTransform * rPrimitive.getTransformation();
88 :
89 : // let break down
90 0 : process(rPrimitive.getChildren());
91 :
92 : // restore transformations and front, back
93 0 : maCombinedTransform = aLastCombinedTransform;
94 0 : updateViewInformation(aLastViewInformation3D);
95 0 : maFront = aLastFront;
96 0 : maBack = aLastBack;
97 0 : break;
98 : }
99 : case PRIMITIVE3D_ID_POLYGONHAIRLINEPRIMITIVE3D :
100 : {
101 : // PolygonHairlinePrimitive3D, not used for hit test with planes, ignore. This
102 : // means that also thick line expansion will not be hit-tested as
103 : // PolyPolygonMaterialPrimitive3D
104 0 : break;
105 : }
106 : case PRIMITIVE3D_ID_HATCHTEXTUREPRIMITIVE3D :
107 : {
108 : // #i97321#
109 : // For HatchTexturePrimitive3D, do not use the decomposition since it will produce
110 : // clipped hatch lines in 3D. It can be used when the hatch also has a filling, but for
111 : // simplicity, just use the children which are the PolyPolygonMaterialPrimitive3D
112 : // which define the hatched areas anyways; for HitTest this is more than adequate
113 0 : const primitive3d::HatchTexturePrimitive3D& rPrimitive = static_cast< const primitive3d::HatchTexturePrimitive3D& >(rCandidate);
114 0 : process(rPrimitive.getChildren());
115 0 : break;
116 : }
117 : case PRIMITIVE3D_ID_HIDDENGEOMETRYPRIMITIVE3D :
118 : {
119 : // HiddenGeometryPrimitive3D; the default decomposition would return an empty seqence,
120 : // so force this primitive to process its children directly if the switch is set
121 : // (which is the default). Else, ignore invisible content
122 0 : const primitive3d::HiddenGeometryPrimitive3D& rHiddenGeometry(static_cast< const primitive3d::HiddenGeometryPrimitive3D& >(rCandidate));
123 0 : const primitive3d::Primitive3DSequence& rChildren = rHiddenGeometry.getChildren();
124 :
125 0 : if(rChildren.hasElements())
126 : {
127 0 : if(getUseInvisiblePrimitiveContent())
128 : {
129 0 : process(rChildren);
130 : }
131 : }
132 :
133 0 : break;
134 : }
135 : case PRIMITIVE3D_ID_UNIFIEDTRANSPARENCETEXTUREPRIMITIVE3D :
136 : {
137 0 : const primitive3d::UnifiedTransparenceTexturePrimitive3D& rPrimitive = static_cast< const primitive3d::UnifiedTransparenceTexturePrimitive3D& >(rCandidate);
138 0 : const primitive3d::Primitive3DSequence rChildren = rPrimitive.getChildren();
139 :
140 0 : if(rChildren.getLength())
141 : {
142 0 : if(1.0 <= rPrimitive.getTransparence())
143 : {
144 : // not visible, but use for HitTest
145 0 : if(getUseInvisiblePrimitiveContent())
146 : {
147 0 : process(rChildren);
148 : }
149 : }
150 0 : else if(rPrimitive.getTransparence() >= 0.0 && rPrimitive.getTransparence() < 1.0)
151 : {
152 : // visible; use content
153 0 : process(rChildren);
154 : }
155 : }
156 :
157 0 : break;
158 : }
159 : case PRIMITIVE3D_ID_POLYPOLYGONMATERIALPRIMITIVE3D :
160 : {
161 : // PolyPolygonMaterialPrimitive3D
162 0 : const primitive3d::PolyPolygonMaterialPrimitive3D& rPrimitive = static_cast< const primitive3d::PolyPolygonMaterialPrimitive3D& >(rCandidate);
163 :
164 0 : if(!maFront.equal(maBack))
165 : {
166 0 : const basegfx::B3DPolyPolygon& rPolyPolygon = rPrimitive.getB3DPolyPolygon();
167 0 : const sal_uInt32 nPolyCount(rPolyPolygon.count());
168 :
169 0 : if(nPolyCount)
170 : {
171 0 : const basegfx::B3DPolygon aPolygon(rPolyPolygon.getB3DPolygon(0));
172 0 : const sal_uInt32 nPointCount(aPolygon.count());
173 :
174 0 : if(nPointCount > 2)
175 : {
176 0 : const basegfx::B3DVector aPlaneNormal(aPolygon.getNormal());
177 :
178 0 : if(!aPlaneNormal.equalZero())
179 : {
180 0 : const basegfx::B3DPoint aPointOnPlane(aPolygon.getB3DPoint(0));
181 0 : double fCut(0.0);
182 :
183 0 : if(basegfx::tools::getCutBetweenLineAndPlane(aPlaneNormal, aPointOnPlane, maFront, maBack, fCut))
184 : {
185 0 : const basegfx::B3DPoint aCutPoint(basegfx::interpolate(maFront, maBack, fCut));
186 :
187 0 : if(basegfx::tools::isInside(rPolyPolygon, aCutPoint, false))
188 : {
189 : // #i102956# add result. Do not forget to do this in the coordinate
190 : // system the processor get started with, so use the collected
191 : // combined transformation from processed TransformPrimitive3D's
192 0 : maResult.push_back(maCombinedTransform * aCutPoint);
193 0 : }
194 0 : }
195 0 : }
196 0 : }
197 : }
198 : }
199 :
200 0 : break;
201 : }
202 : default :
203 : {
204 : // process recursively
205 0 : process(rCandidate.get3DDecomposition(getViewInformation3D()));
206 0 : break;
207 : }
208 : }
209 : }
210 : } // end of namespace processor3d
211 : } // end of namespace drawinglayer
212 :
213 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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