summaryrefslogtreecommitdiffstats
path: root/drawinglayer/source/primitive3d/hatchtextureprimitive3d.cxx
blob: a699f71706bb897e9af84d10c2c12cbdfa99c1d3 (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
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

#include <primitive3d/hatchtextureprimitive3d.hxx>
#include <drawinglayer/primitive3d/polypolygonprimitive3d.hxx>
#include <basegfx/polygon/b2dpolypolygon.hxx>
#include <basegfx/polygon/b3dpolygon.hxx>
#include <basegfx/polygon/b2dpolygon.hxx>
#include <basegfx/polygon/b2dpolypolygontools.hxx>
#include <basegfx/range/b2drange.hxx>
#include <texture/texture.hxx>
#include <basegfx/polygon/b2dpolygonclipper.hxx>
#include <basegfx/matrix/b3dhommatrix.hxx>
#include <drawinglayer/primitive3d/polygonprimitive3d.hxx>
#include <drawinglayer/primitive3d/drawinglayer_primitivetypes3d.hxx>


using namespace com::sun::star;


namespace drawinglayer::primitive3d
{
        Primitive3DContainer HatchTexturePrimitive3D::impCreate3DDecomposition() const
        {
            Primitive3DContainer aRetval;

            if(!getChildren().empty())
            {
                const Primitive3DContainer aSource(getChildren());
                const size_t nSourceCount(aSource.size());
                std::vector< Primitive3DReference > aDestination;

                for(size_t a(0); a < nSourceCount; a++)
                {
                    // get reference
                    const Primitive3DReference xReference(aSource[a]);

                    if(xReference.is())
                    {
                        const BasePrimitive3D* pBasePrimitive = static_cast< const BasePrimitive3D* >(xReference.get());

                        // it is a BasePrimitive3D implementation, use getPrimitive3DID() call for switch
                        // not all content is needed, remove transparencies and ModifiedColorPrimitives
                        switch(pBasePrimitive->getPrimitive3DID())
                        {
                            case PRIMITIVE3D_ID_POLYPOLYGONMATERIALPRIMITIVE3D :
                            {
                                // polyPolygonMaterialPrimitive3D, check texturing and hatching
                                const PolyPolygonMaterialPrimitive3D& rPrimitive = static_cast< const PolyPolygonMaterialPrimitive3D& >(*pBasePrimitive);
                                const basegfx::B3DPolyPolygon& aFillPolyPolygon(rPrimitive.getB3DPolyPolygon());

                                if(maHatch.isFillBackground())
                                {
                                    // add original primitive for background
                                    aDestination.push_back(xReference);
                                }

                                if(aFillPolyPolygon.areTextureCoordinatesUsed())
                                {
                                    const sal_uInt32 nPolyCount(aFillPolyPolygon.count());
                                    basegfx::B2DPolyPolygon aTexPolyPolygon;
                                    basegfx::B2DPoint a2N;
                                    basegfx::B2DVector a2X, a2Y;
                                    basegfx::B3DPoint a3N;
                                    basegfx::B3DVector a3X, a3Y;
                                    bool b2N(false), b2X(false), b2Y(false);

                                    for(sal_uInt32 b(0); b < nPolyCount; b++)
                                    {
                                        const basegfx::B3DPolygon& aPartPoly(aFillPolyPolygon.getB3DPolygon(b));
                                        const sal_uInt32 nPointCount(aPartPoly.count());
                                        basegfx::B2DPolygon aTexPolygon;

                                        for(sal_uInt32 c(0); c < nPointCount; c++)
                                        {
                                            const basegfx::B2DPoint a2Candidate(aPartPoly.getTextureCoordinate(c));

                                            if(!b2N)
                                            {
                                                a2N = a2Candidate;
                                                a3N = aPartPoly.getB3DPoint(c);
                                                b2N = true;
                                            }
                                            else if(!b2X && !a2N.equal(a2Candidate))
                                            {
                                                a2X = a2Candidate - a2N;
                                                a3X = aPartPoly.getB3DPoint(c) - a3N;
                                                b2X = true;
                                            }
                                            else if(!b2Y && !a2N.equal(a2Candidate) && !a2X.equal(a2Candidate))
                                            {
                                                a2Y = a2Candidate - a2N;

                                                const double fCross(a2X.cross(a2Y));

                                                if(!basegfx::fTools::equalZero(fCross))
                                                {
                                                    a3Y = aPartPoly.getB3DPoint(c) - a3N;
                                                    b2Y = true;
                                                }
                                            }

                                            aTexPolygon.append(a2Candidate);
                                        }

                                        aTexPolygon.setClosed(true);
                                        aTexPolyPolygon.append(aTexPolygon);
                                    }

                                    if(b2N && b2X && b2Y)
                                    {
                                        // found two linearly independent 2D vectors
                                        // get 2d range of texture coordinates
                                        const basegfx::B2DRange aOutlineRange(basegfx::utils::getRange(aTexPolyPolygon));
                                        const basegfx::BColor aHatchColor(getHatch().getColor());
                                        const double fAngle(getHatch().getAngle());
                                        std::vector< basegfx::B2DHomMatrix > aMatrices;

                                        // get hatch transformations
                                        switch(getHatch().getStyle())
                                        {
                                            case attribute::HatchStyle::Triple:
                                            {
                                                // rotated 45 degrees
                                                texture::GeoTexSvxHatch aHatch(
                                                    aOutlineRange,
                                                    aOutlineRange,
                                                    getHatch().getDistance(),
                                                    fAngle - M_PI_4);

                                                aHatch.appendTransformations(aMatrices);

                                                [[fallthrough]];
                                            }
                                            case attribute::HatchStyle::Double:
                                            {
                                                // rotated 90 degrees
                                                texture::GeoTexSvxHatch aHatch(
                                                    aOutlineRange,
                                                    aOutlineRange,
                                                    getHatch().getDistance(),
                                                    fAngle - M_PI_2);

                                                aHatch.appendTransformations(aMatrices);

                                                [[fallthrough]];
                                            }
                                            case attribute::HatchStyle::Single:
                                            {
                                                // angle as given
                                                texture::GeoTexSvxHatch aHatch(
                                                    aOutlineRange,
                                                    aOutlineRange,
                                                    getHatch().getDistance(),
                                                    fAngle);

                                                aHatch.appendTransformations(aMatrices);
                                            }
                                        }

                                        // create geometry from unit line
                                        basegfx::B2DPolyPolygon a2DHatchLines;
                                        basegfx::B2DPolygon a2DUnitLine;
                                        a2DUnitLine.append(basegfx::B2DPoint(0.0, 0.0));
                                        a2DUnitLine.append(basegfx::B2DPoint(1.0, 0.0));

                                        for(const basegfx::B2DHomMatrix & rMatrix : aMatrices)
                                        {
                                            basegfx::B2DPolygon aNewLine(a2DUnitLine);
                                            aNewLine.transform(rMatrix);
                                            a2DHatchLines.append(aNewLine);
                                        }

                                        if(a2DHatchLines.count())
                                        {
                                            // clip against texture polygon
                                            a2DHatchLines = basegfx::utils::clipPolyPolygonOnPolyPolygon(a2DHatchLines, aTexPolyPolygon, true, true);
                                        }

                                        if(a2DHatchLines.count())
                                        {
                                            // create 2d matrix with 2d vectors as column vectors and 2d point as offset, this represents
                                            // a coordinate system transformation from unit coordinates to the new coordinate system
                                            basegfx::B2DHomMatrix a2D;
                                            a2D.set(0, 0, a2X.getX());
                                            a2D.set(1, 0, a2X.getY());
                                            a2D.set(0, 1, a2Y.getX());
                                            a2D.set(1, 1, a2Y.getY());
                                            a2D.set(0, 2, a2N.getX());
                                            a2D.set(1, 2, a2N.getY());

                                            // invert that transformation, so we have a back-transformation from texture coordinates
                                            // to unit coordinates
                                            a2D.invert();
                                            a2DHatchLines.transform(a2D);

                                            // expand back-transformed geometry to 3D
                                            basegfx::B3DPolyPolygon a3DHatchLines(basegfx::utils::createB3DPolyPolygonFromB2DPolyPolygon(a2DHatchLines, 0.0));

                                            // create 3d matrix with 3d vectors as column vectors (0,0,1 as Z) and 3d point as offset, this represents
                                            // a coordinate system transformation from unit coordinates to the object's 3d coordinate system
                                            basegfx::B3DHomMatrix a3D;
                                            a3D.set(0, 0, a3X.getX());
                                            a3D.set(1, 0, a3X.getY());
                                            a3D.set(2, 0, a3X.getZ());
                                            a3D.set(0, 1, a3Y.getX());
                                            a3D.set(1, 1, a3Y.getY());
                                            a3D.set(2, 1, a3Y.getZ());
                                            a3D.set(0, 3, a3N.getX());
                                            a3D.set(1, 3, a3N.getY());
                                            a3D.set(2, 3, a3N.getZ());

                                            // transform hatch lines to 3D object coordinates
                                            a3DHatchLines.transform(a3D);

                                            // build primitives from this geometry
                                            const sal_uInt32 nHatchLines(a3DHatchLines.count());

                                            for(sal_uInt32 d(0); d < nHatchLines; d++)
                                            {
                                                const Primitive3DReference xRef(new PolygonHairlinePrimitive3D(a3DHatchLines.getB3DPolygon(d), aHatchColor));
                                                aDestination.push_back(xRef);
                                            }
                                        }
                                    }
                                }

                                break;
                            }
                            default :
                            {
                                // add reference to result
                                aDestination.push_back(xReference);
                                break;
                            }
                        }
                    }
                }

                // prepare return value
                const sal_uInt32 nDestSize(aDestination.size());
                aRetval.resize(nDestSize);

                for(sal_uInt32 b(0); b < nDestSize; b++)
                {
                    aRetval[b] = aDestination[b];
                }
            }

            return aRetval;
        }

        HatchTexturePrimitive3D::HatchTexturePrimitive3D(
            const attribute::FillHatchAttribute& rHatch,
            const Primitive3DContainer& rChildren,
            const basegfx::B2DVector& rTextureSize,
            bool bModulate,
            bool bFilter)
        :   TexturePrimitive3D(rChildren, rTextureSize, bModulate, bFilter),
            maHatch(rHatch)
        {
        }

        bool HatchTexturePrimitive3D::operator==(const BasePrimitive3D& rPrimitive) const
        {
            if(TexturePrimitive3D::operator==(rPrimitive))
            {
                const HatchTexturePrimitive3D& rCompare = static_cast<const HatchTexturePrimitive3D&>(rPrimitive);

                return (getHatch() == rCompare.getHatch());
            }

            return false;
        }

        Primitive3DContainer HatchTexturePrimitive3D::get3DDecomposition(const geometry::ViewInformation3D& /*rViewInformation*/) const
        {
            ::osl::MutexGuard aGuard( m_aMutex );

            if(getBuffered3DDecomposition().empty())
            {
                const Primitive3DContainer aNewSequence(impCreate3DDecomposition());
                const_cast< HatchTexturePrimitive3D* >(this)->maBuffered3DDecomposition = aNewSequence;
            }

            return getBuffered3DDecomposition();
        }

        // provide unique ID
        ImplPrimitive3DIDBlock(HatchTexturePrimitive3D, PRIMITIVE3D_ID_HATCHTEXTUREPRIMITIVE3D)

} // end of namespace

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */