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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 :
21 : #include <svx/helperhittest3d.hxx>
22 : #include <basegfx/point/b2dpoint.hxx>
23 : #include <svx/svdpage.hxx>
24 : #include <svx/scene3d.hxx>
25 : #include <svx/svditer.hxx>
26 : #include <drawinglayer/processor3d/cutfindprocessor3d.hxx>
27 : #include <svx/sdr/contact/viewcontactofe3d.hxx>
28 : #include <svx/sdr/contact/viewcontactofe3dscene.hxx>
29 : #include <com/sun/star/uno/Sequence.h>
30 :
31 :
32 :
33 : using namespace com::sun::star;
34 :
35 :
36 :
37 : class ImplPairDephAndObject
38 : {
39 : private:
40 : const E3dCompoundObject* mpObject;
41 : double mfDepth;
42 :
43 : public:
44 0 : ImplPairDephAndObject(const E3dCompoundObject* pObject, double fDepth)
45 : : mpObject(pObject),
46 0 : mfDepth(fDepth)
47 0 : {}
48 :
49 : // for ::std::sort
50 0 : bool operator<(const ImplPairDephAndObject& rComp) const
51 : {
52 0 : return (mfDepth < rComp.mfDepth);
53 : }
54 :
55 : // data read access
56 0 : const E3dCompoundObject* getObject() const { return mpObject; }
57 : };
58 :
59 :
60 :
61 0 : void getAllHit3DObjectWithRelativePoint(
62 : const basegfx::B3DPoint& rFront,
63 : const basegfx::B3DPoint& rBack,
64 : const E3dCompoundObject& rObject,
65 : const drawinglayer::geometry::ViewInformation3D& rObjectViewInformation3D,
66 : ::std::vector< basegfx::B3DPoint >& o_rResult,
67 : bool bAnyHit)
68 : {
69 0 : o_rResult.clear();
70 :
71 0 : if(!rFront.equal(rBack))
72 : {
73 : // rObject is a E3dCompoundObject, so it cannot be a scene (which is a E3dObject)
74 0 : const sdr::contact::ViewContactOfE3d& rVCObject = static_cast< sdr::contact::ViewContactOfE3d& >(rObject.GetViewContact());
75 0 : const drawinglayer::primitive3d::Primitive3DSequence aPrimitives(rVCObject.getViewIndependentPrimitive3DSequence());
76 :
77 0 : if(aPrimitives.hasElements())
78 : {
79 : // make BoundVolume empty and overlapping test for speedup
80 0 : const basegfx::B3DRange aObjectRange(drawinglayer::primitive3d::getB3DRangeFromPrimitive3DSequence(aPrimitives, rObjectViewInformation3D));
81 :
82 0 : if(!aObjectRange.isEmpty())
83 : {
84 0 : const basegfx::B3DRange aFrontBackRange(rFront, rBack);
85 :
86 0 : if(aObjectRange.overlaps(aFrontBackRange))
87 : {
88 : // bound volumes hit, geometric cut tests needed
89 0 : drawinglayer::processor3d::CutFindProcessor aCutFindProcessor(rObjectViewInformation3D, rFront, rBack, bAnyHit);
90 0 : aCutFindProcessor.process(aPrimitives);
91 0 : o_rResult = aCutFindProcessor.getCutPoints();
92 : }
93 : }
94 0 : }
95 : }
96 0 : }
97 :
98 :
99 :
100 0 : E3dScene* fillViewInformation3DForCompoundObject(drawinglayer::geometry::ViewInformation3D& o_rViewInformation3D, const E3dCompoundObject& rCandidate)
101 : {
102 : // Search for root scene (outmost scene) of the 3d object since e.g. in chart, multiple scenes may
103 : // be placed between object and outmost scene. On that search, remember the in-between scene's
104 : // transformation for the correct complete ObjectTransformation. For historical reasons, the
105 : // root scene's own object transformation is part of the scene's ViewTransformation, o do not
106 : // add it. For more details, see ViewContactOfE3dScene::createViewInformation3D.
107 0 : E3dScene* pParentScene = dynamic_cast< E3dScene* >(rCandidate.GetParentObj());
108 0 : E3dScene* pRootScene = 0;
109 0 : basegfx::B3DHomMatrix aInBetweenSceneMatrix;
110 :
111 0 : while(pParentScene)
112 : {
113 0 : E3dScene* pParentParentScene = dynamic_cast< E3dScene* >(pParentScene->GetParentObj());
114 :
115 0 : if(pParentParentScene)
116 : {
117 : // pParentScene is a in-between scene
118 0 : aInBetweenSceneMatrix = pParentScene->GetTransform() * aInBetweenSceneMatrix;
119 : }
120 : else
121 : {
122 : // pParentScene is the root scene
123 0 : pRootScene = pParentScene;
124 : }
125 :
126 0 : pParentScene = pParentParentScene;
127 : }
128 :
129 0 : if(pRootScene)
130 : {
131 0 : const sdr::contact::ViewContactOfE3dScene& rVCScene = static_cast< sdr::contact::ViewContactOfE3dScene& >(pRootScene->GetViewContact());
132 :
133 0 : if(aInBetweenSceneMatrix.isIdentity())
134 : {
135 0 : o_rViewInformation3D = rVCScene.getViewInformation3D();
136 : }
137 : else
138 : {
139 : // build new ViewInformation containing all transforms for the candidate
140 0 : const drawinglayer::geometry::ViewInformation3D aViewInfo3D(rVCScene.getViewInformation3D());
141 :
142 0 : o_rViewInformation3D = drawinglayer::geometry::ViewInformation3D(
143 0 : aViewInfo3D.getObjectTransformation() * aInBetweenSceneMatrix,
144 0 : aViewInfo3D.getOrientation(),
145 0 : aViewInfo3D.getProjection(),
146 0 : aViewInfo3D.getDeviceToView(),
147 : aViewInfo3D.getViewTime(),
148 0 : aViewInfo3D.getExtendedInformationSequence());
149 : }
150 : }
151 : else
152 : {
153 0 : const uno::Sequence< beans::PropertyValue > aEmptyParameters;
154 0 : o_rViewInformation3D = drawinglayer::geometry::ViewInformation3D(aEmptyParameters);
155 : }
156 :
157 0 : return pRootScene;
158 : }
159 :
160 :
161 :
162 0 : SVX_DLLPUBLIC void getAllHit3DObjectsSortedFrontToBack(
163 : const basegfx::B2DPoint& rPoint,
164 : const E3dScene& rScene,
165 : ::std::vector< const E3dCompoundObject* >& o_rResult)
166 : {
167 0 : o_rResult.clear();
168 0 : SdrObjList* pList = rScene.GetSubList();
169 :
170 0 : if(pList && pList->GetObjCount())
171 : {
172 : // prepare relative HitPoint. To do so, get the VC of the 3DScene and from there
173 : // the Scene's 2D transformation. Multiplying with the inverse transformation
174 : // will create a point relative to the 3D scene as unit-2d-object
175 0 : const sdr::contact::ViewContactOfE3dScene& rVCScene = static_cast< sdr::contact::ViewContactOfE3dScene& >(rScene.GetViewContact());
176 0 : basegfx::B2DHomMatrix aInverseSceneTransform(rVCScene.getObjectTransformation());
177 0 : aInverseSceneTransform.invert();
178 0 : const basegfx::B2DPoint aRelativePoint(aInverseSceneTransform * rPoint);
179 :
180 : // check if test point is inside scene's area at all
181 0 : if(aRelativePoint.getX() >= 0.0 && aRelativePoint.getX() <= 1.0 && aRelativePoint.getY() >= 0.0 && aRelativePoint.getY() <= 1.0)
182 : {
183 0 : SdrObjListIter aIterator(*pList, IM_DEEPNOGROUPS);
184 0 : ::std::vector< ImplPairDephAndObject > aDepthAndObjectResults;
185 0 : const uno::Sequence< beans::PropertyValue > aEmptyParameters;
186 0 : drawinglayer::geometry::ViewInformation3D aViewInfo3D(aEmptyParameters);
187 :
188 0 : while(aIterator.IsMore())
189 : {
190 0 : const E3dCompoundObject* pCandidate = dynamic_cast< const E3dCompoundObject* >(aIterator.Next());
191 :
192 0 : if(pCandidate)
193 : {
194 0 : fillViewInformation3DForCompoundObject(aViewInfo3D, *pCandidate);
195 :
196 : // create HitPoint Front and Back, transform to object coordinates
197 0 : basegfx::B3DHomMatrix aViewToObject(aViewInfo3D.getObjectToView());
198 0 : aViewToObject.invert();
199 0 : const basegfx::B3DPoint aFront(aViewToObject * basegfx::B3DPoint(aRelativePoint.getX(), aRelativePoint.getY(), 0.0));
200 0 : const basegfx::B3DPoint aBack(aViewToObject * basegfx::B3DPoint(aRelativePoint.getX(), aRelativePoint.getY(), 1.0));
201 :
202 0 : if(!aFront.equal(aBack))
203 : {
204 : // get all hit points with object
205 0 : ::std::vector< basegfx::B3DPoint > aHitsWithObject;
206 0 : getAllHit3DObjectWithRelativePoint(aFront, aBack, *pCandidate, aViewInfo3D, aHitsWithObject, false);
207 :
208 0 : for(sal_uInt32 a(0); a < aHitsWithObject.size(); a++)
209 : {
210 0 : const basegfx::B3DPoint aPointInViewCoordinates(aViewInfo3D.getObjectToView() * aHitsWithObject[a]);
211 0 : aDepthAndObjectResults.push_back(ImplPairDephAndObject(pCandidate, aPointInViewCoordinates.getZ()));
212 0 : }
213 0 : }
214 : }
215 : }
216 :
217 : // fill nRetval
218 0 : const sal_uInt32 nCount(aDepthAndObjectResults.size());
219 :
220 0 : if(nCount)
221 : {
222 : // sort aDepthAndObjectResults by depth
223 0 : ::std::sort(aDepthAndObjectResults.begin(), aDepthAndObjectResults.end());
224 :
225 : // copy SdrObject pointers to return result set
226 0 : ::std::vector< ImplPairDephAndObject >::iterator aIterator2(aDepthAndObjectResults.begin());
227 :
228 0 : for(;aIterator2 != aDepthAndObjectResults.end(); ++aIterator2)
229 : {
230 0 : o_rResult.push_back(aIterator2->getObject());
231 : }
232 0 : }
233 0 : }
234 : }
235 0 : }
236 :
237 :
238 :
239 0 : bool checkHitSingle3DObject(
240 : const basegfx::B2DPoint& rPoint,
241 : const E3dCompoundObject& rCandidate)
242 : {
243 0 : const uno::Sequence< beans::PropertyValue > aEmptyParameters;
244 0 : drawinglayer::geometry::ViewInformation3D aViewInfo3D(aEmptyParameters);
245 0 : E3dScene* pRootScene = fillViewInformation3DForCompoundObject(aViewInfo3D, rCandidate);
246 :
247 0 : if(pRootScene)
248 : {
249 : // prepare relative HitPoint. To do so, get the VC of the 3DScene and from there
250 : // the Scene's 2D transformation. Multiplying with the inverse transformation
251 : // will create a point relative to the 3D scene as unit-2d-object
252 0 : const sdr::contact::ViewContactOfE3dScene& rVCScene = static_cast< sdr::contact::ViewContactOfE3dScene& >(pRootScene->GetViewContact());
253 0 : basegfx::B2DHomMatrix aInverseSceneTransform(rVCScene.getObjectTransformation());
254 0 : aInverseSceneTransform.invert();
255 0 : const basegfx::B2DPoint aRelativePoint(aInverseSceneTransform * rPoint);
256 :
257 : // check if test point is inside scene's area at all
258 0 : if(aRelativePoint.getX() >= 0.0 && aRelativePoint.getX() <= 1.0 && aRelativePoint.getY() >= 0.0 && aRelativePoint.getY() <= 1.0)
259 : {
260 : // create HitPoint Front and Back, transform to object coordinates
261 0 : basegfx::B3DHomMatrix aViewToObject(aViewInfo3D.getObjectToView());
262 0 : aViewToObject.invert();
263 0 : const basegfx::B3DPoint aFront(aViewToObject * basegfx::B3DPoint(aRelativePoint.getX(), aRelativePoint.getY(), 0.0));
264 0 : const basegfx::B3DPoint aBack(aViewToObject * basegfx::B3DPoint(aRelativePoint.getX(), aRelativePoint.getY(), 1.0));
265 :
266 0 : if(!aFront.equal(aBack))
267 : {
268 : // get all hit points with object
269 0 : ::std::vector< basegfx::B3DPoint > aHitsWithObject;
270 0 : getAllHit3DObjectWithRelativePoint(aFront, aBack, rCandidate, aViewInfo3D, aHitsWithObject, true);
271 :
272 0 : if(!aHitsWithObject.empty())
273 : {
274 0 : return true;
275 0 : }
276 0 : }
277 0 : }
278 : }
279 :
280 0 : return false;
281 : }
282 :
283 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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