summaryrefslogtreecommitdiff
path: root/svx/source/engine3d/helperhittest3d.cxx
blob: 78324c22ed27228ac7a8f149f89a01f03c011d76 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
 *
 ************************************************************************/

// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_svx.hxx"

#include <svx/helperhittest3d.hxx>
#include <basegfx/point/b2dpoint.hxx>
#include <svx/svdpage.hxx>
#include <svx/scene3d.hxx>
#include <svditer.hxx>
#include <drawinglayer/processor3d/cutfindprocessor3d.hxx>
#include <svx/sdr/contact/viewcontactofe3d.hxx>
#include <svx/sdr/contact/viewcontactofe3dscene.hxx>
#include <com/sun/star/uno/Sequence.h>

//////////////////////////////////////////////////////////////////////////////

using namespace com::sun::star;

//////////////////////////////////////////////////////////////////////////////

class ImplPairDephAndObject
{
private:
    const E3dCompoundObject*    mpObject;
    double                      mfDepth;

public:
    ImplPairDephAndObject(const E3dCompoundObject* pObject, double fDepth)
    :   mpObject(pObject),
        mfDepth(fDepth)
    {}

    // for ::std::sort
    bool operator<(const ImplPairDephAndObject& rComp) const
    {
        return (mfDepth < rComp.mfDepth);
    }

    // data read access
    const E3dCompoundObject* getObject() const { return mpObject; }
    double getDepth() const { return mfDepth; }
};

//////////////////////////////////////////////////////////////////////////////

void getAllHit3DObjectWithRelativePoint(
    const basegfx::B3DPoint& rFront,
    const basegfx::B3DPoint& rBack,
    const E3dCompoundObject& rObject,
    const drawinglayer::geometry::ViewInformation3D& rObjectViewInformation3D,
    ::std::vector< basegfx::B3DPoint >& o_rResult,
    bool bAnyHit)
{
    o_rResult.clear();

    if(!rFront.equal(rBack))
    {
        // rObject is a E3dCompoundObject, so it cannot be a scene (which is a E3dObject)
        const sdr::contact::ViewContactOfE3d& rVCObject = static_cast< sdr::contact::ViewContactOfE3d& >(rObject.GetViewContact());
        const drawinglayer::primitive3d::Primitive3DSequence aPrimitives(rVCObject.getViewIndependentPrimitive3DSequence());

        if(aPrimitives.hasElements())
        {
            // make BoundVolume empty and overlapping test for speedup
            const basegfx::B3DRange aObjectRange(drawinglayer::primitive3d::getB3DRangeFromPrimitive3DSequence(aPrimitives, rObjectViewInformation3D));

            if(!aObjectRange.isEmpty())
            {
                const basegfx::B3DRange aFrontBackRange(rFront, rBack);

                if(aObjectRange.overlaps(aFrontBackRange))
                {
                    // bound volumes hit, geometric cut tests needed
                    drawinglayer::processor3d::CutFindProcessor aCutFindProcessor(rObjectViewInformation3D, rFront, rBack, bAnyHit);
                    aCutFindProcessor.process(aPrimitives);
                    o_rResult = aCutFindProcessor.getCutPoints();
                }
            }
        }
    }
}

//////////////////////////////////////////////////////////////////////////////

E3dScene* fillViewInformation3DForCompoundObject(drawinglayer::geometry::ViewInformation3D& o_rViewInformation3D, const E3dCompoundObject& rCandidate)
{
    // Search for root scene (outmost scene) of the 3d object since e.g. in chart, multiple scenes may
    // be placed between object and outmost scene. On that search, remember the in-between scene's
    // transformation for the correct complete ObjectTransformation. For historical reasons, the
    // root scene's own object transformation is part of the scene's ViewTransformation, o do not
    // add it. For more details, see ViewContactOfE3dScene::createViewInformation3D.
    E3dScene* pParentScene = dynamic_cast< E3dScene* >(rCandidate.GetParentObj());
    E3dScene* pRootScene = 0;
    basegfx::B3DHomMatrix aInBetweenSceneMatrix;

    while(pParentScene)
    {
        E3dScene* pParentParentScene = dynamic_cast< E3dScene* >(pParentScene->GetParentObj());

        if(pParentParentScene)
        {
            // pParentScene is a in-between scene
            aInBetweenSceneMatrix = pParentScene->GetTransform() * aInBetweenSceneMatrix;
        }
        else
        {
            // pParentScene is the root scene
            pRootScene = pParentScene;
        }

        pParentScene = pParentParentScene;
    }

    if(pRootScene)
    {
        const sdr::contact::ViewContactOfE3dScene& rVCScene = static_cast< sdr::contact::ViewContactOfE3dScene& >(pRootScene->GetViewContact());

        if(aInBetweenSceneMatrix.isIdentity())
        {
            o_rViewInformation3D = rVCScene.getViewInformation3D();
        }
        else
        {
            // build new ViewInformation containing all transforms for the candidate
            const drawinglayer::geometry::ViewInformation3D aViewInfo3D(rVCScene.getViewInformation3D());

            o_rViewInformation3D = drawinglayer::geometry::ViewInformation3D(
                aViewInfo3D.getObjectTransformation() * aInBetweenSceneMatrix,
                aViewInfo3D.getOrientation(),
                aViewInfo3D.getProjection(),
                aViewInfo3D.getDeviceToView(),
                aViewInfo3D.getViewTime(),
                aViewInfo3D.getExtendedInformationSequence());
        }
    }
    else
    {
        const uno::Sequence< beans::PropertyValue > aEmptyParameters;
        o_rViewInformation3D = drawinglayer::geometry::ViewInformation3D(aEmptyParameters);
    }

    return pRootScene;
}

//////////////////////////////////////////////////////////////////////////////

SVX_DLLPUBLIC void getAllHit3DObjectsSortedFrontToBack(
    const basegfx::B2DPoint& rPoint,
    const E3dScene& rScene,
    ::std::vector< const E3dCompoundObject* >& o_rResult)
{
    o_rResult.clear();
    SdrObjList* pList = rScene.GetSubList();

    if(pList && pList->GetObjCount())
    {
        // prepare relative HitPoint. To do so, get the VC of the 3DScene and from there
        // the Scene's 2D transformation. Multiplying with the inverse transformation
        // will create a point relative to the 3D scene as unit-2d-object
        const sdr::contact::ViewContactOfE3dScene& rVCScene = static_cast< sdr::contact::ViewContactOfE3dScene& >(rScene.GetViewContact());
        basegfx::B2DHomMatrix aInverseSceneTransform(rVCScene.getObjectTransformation());
        aInverseSceneTransform.invert();
        const basegfx::B2DPoint aRelativePoint(aInverseSceneTransform * rPoint);

        // check if test point is inside scene's area at all
        if(aRelativePoint.getX() >= 0.0 && aRelativePoint.getX() <= 1.0 && aRelativePoint.getY() >= 0.0 && aRelativePoint.getY() <= 1.0)
        {
            SdrObjListIter aIterator(*pList, IM_DEEPNOGROUPS);
            ::std::vector< ImplPairDephAndObject > aDepthAndObjectResults;
            const uno::Sequence< beans::PropertyValue > aEmptyParameters;
            drawinglayer::geometry::ViewInformation3D aViewInfo3D(aEmptyParameters);

            while(aIterator.IsMore())
            {
                const E3dCompoundObject* pCandidate = dynamic_cast< const E3dCompoundObject* >(aIterator.Next());

                if(pCandidate)
                {
                    fillViewInformation3DForCompoundObject(aViewInfo3D, *pCandidate);

                    // create HitPoint Front and Back, transform to object coordinates
                    basegfx::B3DHomMatrix aViewToObject(aViewInfo3D.getObjectToView());
                    aViewToObject.invert();
                    const basegfx::B3DPoint aFront(aViewToObject * basegfx::B3DPoint(aRelativePoint.getX(), aRelativePoint.getY(), 0.0));
                    const basegfx::B3DPoint aBack(aViewToObject * basegfx::B3DPoint(aRelativePoint.getX(), aRelativePoint.getY(), 1.0));

                    if(!aFront.equal(aBack))
                    {
                        // get all hit points with object
                        ::std::vector< basegfx::B3DPoint > aHitsWithObject;
                        getAllHit3DObjectWithRelativePoint(aFront, aBack, *pCandidate, aViewInfo3D, aHitsWithObject, false);

                        for(sal_uInt32 a(0); a < aHitsWithObject.size(); a++)
                        {
                            const basegfx::B3DPoint aPointInViewCoordinates(aViewInfo3D.getObjectToView() * aHitsWithObject[a]);
                            aDepthAndObjectResults.push_back(ImplPairDephAndObject(pCandidate, aPointInViewCoordinates.getZ()));
                        }
                    }
                }
            }

            // fill nRetval
            const sal_uInt32 nCount(aDepthAndObjectResults.size());

            if(nCount)
            {
                // sort aDepthAndObjectResults by depth
                ::std::sort(aDepthAndObjectResults.begin(), aDepthAndObjectResults.end());

                // copy SdrObject pointers to return result set
                ::std::vector< ImplPairDephAndObject >::iterator aIterator2(aDepthAndObjectResults.begin());

                for(;aIterator2 != aDepthAndObjectResults.end(); aIterator2++)
                {
                    o_rResult.push_back(aIterator2->getObject());
                }
            }
        }
    }
}

//////////////////////////////////////////////////////////////////////////////

bool checkHitSingle3DObject(
    const basegfx::B2DPoint& rPoint,
    const E3dCompoundObject& rCandidate)
{
    const uno::Sequence< beans::PropertyValue > aEmptyParameters;
    drawinglayer::geometry::ViewInformation3D aViewInfo3D(aEmptyParameters);
    E3dScene* pRootScene = fillViewInformation3DForCompoundObject(aViewInfo3D, rCandidate);

    if(pRootScene)
    {
        // prepare relative HitPoint. To do so, get the VC of the 3DScene and from there
        // the Scene's 2D transformation. Multiplying with the inverse transformation
        // will create a point relative to the 3D scene as unit-2d-object
        const sdr::contact::ViewContactOfE3dScene& rVCScene = static_cast< sdr::contact::ViewContactOfE3dScene& >(pRootScene->GetViewContact());
        basegfx::B2DHomMatrix aInverseSceneTransform(rVCScene.getObjectTransformation());
        aInverseSceneTransform.invert();
        const basegfx::B2DPoint aRelativePoint(aInverseSceneTransform * rPoint);

        // check if test point is inside scene's area at all
        if(aRelativePoint.getX() >= 0.0 && aRelativePoint.getX() <= 1.0 && aRelativePoint.getY() >= 0.0 && aRelativePoint.getY() <= 1.0)
        {
            // create HitPoint Front and Back, transform to object coordinates
            basegfx::B3DHomMatrix aViewToObject(aViewInfo3D.getObjectToView());
            aViewToObject.invert();
            const basegfx::B3DPoint aFront(aViewToObject * basegfx::B3DPoint(aRelativePoint.getX(), aRelativePoint.getY(), 0.0));
            const basegfx::B3DPoint aBack(aViewToObject * basegfx::B3DPoint(aRelativePoint.getX(), aRelativePoint.getY(), 1.0));

            if(!aFront.equal(aBack))
            {
                // get all hit points with object
                ::std::vector< basegfx::B3DPoint > aHitsWithObject;
                getAllHit3DObjectWithRelativePoint(aFront, aBack, rCandidate, aViewInfo3D, aHitsWithObject, true);

                if(aHitsWithObject.size())
                {
                    return true;
                }
            }
        }
    }

    return false;
}

//////////////////////////////////////////////////////////////////////////////
// eof