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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/primitive3d/hatchtextureprimitive3d.hxx>
21 : #include <drawinglayer/primitive3d/polypolygonprimitive3d.hxx>
22 : #include <basegfx/polygon/b2dpolypolygon.hxx>
23 : #include <basegfx/polygon/b3dpolygon.hxx>
24 : #include <basegfx/polygon/b2dpolygon.hxx>
25 : #include <basegfx/polygon/b2dpolypolygontools.hxx>
26 : #include <basegfx/range/b2drange.hxx>
27 : #include <drawinglayer/texture/texture.hxx>
28 : #include <basegfx/polygon/b2dpolygonclipper.hxx>
29 : #include <basegfx/matrix/b3dhommatrix.hxx>
30 : #include <drawinglayer/primitive3d/polygonprimitive3d.hxx>
31 : #include <drawinglayer/primitive3d/drawinglayer_primitivetypes3d.hxx>
32 :
33 : //////////////////////////////////////////////////////////////////////////////
34 :
35 : using namespace com::sun::star;
36 :
37 : //////////////////////////////////////////////////////////////////////////////
38 :
39 : namespace drawinglayer
40 : {
41 : namespace primitive3d
42 : {
43 0 : Primitive3DSequence HatchTexturePrimitive3D::impCreate3DDecomposition() const
44 : {
45 0 : Primitive3DSequence aRetval;
46 :
47 0 : if(getChildren().hasElements())
48 : {
49 0 : const Primitive3DSequence aSource(getChildren());
50 0 : const sal_uInt32 nSourceCount(aSource.getLength());
51 0 : std::vector< Primitive3DReference > aDestination;
52 :
53 0 : for(sal_uInt32 a(0); a < nSourceCount; a++)
54 : {
55 : // get reference
56 0 : const Primitive3DReference xReference(aSource[a]);
57 :
58 0 : if(xReference.is())
59 : {
60 : // try to cast to BasePrimitive2D implementation
61 0 : const BasePrimitive3D* pBasePrimitive = dynamic_cast< const BasePrimitive3D* >(xReference.get());
62 :
63 0 : if(pBasePrimitive)
64 : {
65 : // it is a BasePrimitive3D implementation, use getPrimitive3DID() call for switch
66 : // not all content is needed, remove transparencies and ModifiedColorPrimitives
67 0 : switch(pBasePrimitive->getPrimitive3DID())
68 : {
69 : case PRIMITIVE3D_ID_POLYPOLYGONMATERIALPRIMITIVE3D :
70 : {
71 : // polyPolygonMaterialPrimitive3D, check texturing and hatching
72 0 : const PolyPolygonMaterialPrimitive3D& rPrimitive = static_cast< const PolyPolygonMaterialPrimitive3D& >(*pBasePrimitive);
73 0 : const basegfx::B3DPolyPolygon aFillPolyPolygon(rPrimitive.getB3DPolyPolygon());
74 :
75 0 : if(maHatch.isFillBackground())
76 : {
77 : // add original primitive for background
78 0 : aDestination.push_back(xReference);
79 : }
80 :
81 0 : if(aFillPolyPolygon.areTextureCoordinatesUsed())
82 : {
83 0 : const sal_uInt32 nPolyCount(aFillPolyPolygon.count());
84 0 : basegfx::B2DPolyPolygon aTexPolyPolygon;
85 0 : basegfx::B2DPoint a2N;
86 0 : basegfx::B2DVector a2X, a2Y;
87 0 : basegfx::B3DPoint a3N;
88 0 : basegfx::B3DVector a3X, a3Y;
89 0 : bool b2N(false), b2X(false), b2Y(false);
90 :
91 0 : for(sal_uInt32 b(0); b < nPolyCount; b++)
92 : {
93 0 : const basegfx::B3DPolygon aPartPoly(aFillPolyPolygon.getB3DPolygon(b));
94 0 : const sal_uInt32 nPointCount(aPartPoly.count());
95 0 : basegfx::B2DPolygon aTexPolygon;
96 :
97 0 : for(sal_uInt32 c(0); c < nPointCount; c++)
98 : {
99 0 : const basegfx::B2DPoint a2Candidate(aPartPoly.getTextureCoordinate(c));
100 :
101 0 : if(!b2N)
102 : {
103 0 : a2N = a2Candidate;
104 0 : a3N = aPartPoly.getB3DPoint(c);
105 0 : b2N = true;
106 : }
107 0 : else if(!b2X && !a2N.equal(a2Candidate))
108 : {
109 0 : a2X = a2Candidate - a2N;
110 0 : a3X = aPartPoly.getB3DPoint(c) - a3N;
111 0 : b2X = true;
112 : }
113 0 : else if(!b2Y && !a2N.equal(a2Candidate) && !a2X.equal(a2Candidate))
114 : {
115 0 : a2Y = a2Candidate - a2N;
116 :
117 0 : const double fCross(a2X.cross(a2Y));
118 :
119 0 : if(!basegfx::fTools::equalZero(fCross))
120 : {
121 0 : a3Y = aPartPoly.getB3DPoint(c) - a3N;
122 0 : b2Y = true;
123 : }
124 : }
125 :
126 0 : aTexPolygon.append(a2Candidate);
127 0 : }
128 :
129 0 : aTexPolygon.setClosed(true);
130 0 : aTexPolyPolygon.append(aTexPolygon);
131 0 : }
132 :
133 0 : if(b2N && b2X && b2Y)
134 : {
135 : // found two linearly independent 2D vectors
136 : // get 2d range of texture coordinates
137 0 : const basegfx::B2DRange aOutlineRange(basegfx::tools::getRange(aTexPolyPolygon));
138 0 : const basegfx::BColor aHatchColor(getHatch().getColor());
139 0 : const double fAngle(getHatch().getAngle());
140 0 : ::std::vector< basegfx::B2DHomMatrix > aMatrices;
141 :
142 : // get hatch transformations
143 0 : switch(getHatch().getStyle())
144 : {
145 : case attribute::HATCHSTYLE_TRIPLE:
146 : {
147 : // rotated 45 degrees
148 0 : texture::GeoTexSvxHatch aHatch(aOutlineRange, getHatch().getDistance(), fAngle - F_PI4);
149 0 : aHatch.appendTransformations(aMatrices);
150 : }
151 : case attribute::HATCHSTYLE_DOUBLE:
152 : {
153 : // rotated 90 degrees
154 0 : texture::GeoTexSvxHatch aHatch(aOutlineRange, getHatch().getDistance(), fAngle - F_PI2);
155 0 : aHatch.appendTransformations(aMatrices);
156 : }
157 : case attribute::HATCHSTYLE_SINGLE:
158 : {
159 : // angle as given
160 0 : texture::GeoTexSvxHatch aHatch(aOutlineRange, getHatch().getDistance(), fAngle);
161 0 : aHatch.appendTransformations(aMatrices);
162 : }
163 : }
164 :
165 : // create geometry from unit line
166 0 : basegfx::B2DPolyPolygon a2DHatchLines;
167 0 : basegfx::B2DPolygon a2DUnitLine;
168 0 : a2DUnitLine.append(basegfx::B2DPoint(0.0, 0.0));
169 0 : a2DUnitLine.append(basegfx::B2DPoint(1.0, 0.0));
170 :
171 0 : for(sal_uInt32 c(0); c < aMatrices.size(); c++)
172 : {
173 0 : const basegfx::B2DHomMatrix& rMatrix = aMatrices[c];
174 0 : basegfx::B2DPolygon aNewLine(a2DUnitLine);
175 0 : aNewLine.transform(rMatrix);
176 0 : a2DHatchLines.append(aNewLine);
177 0 : }
178 :
179 0 : if(a2DHatchLines.count())
180 : {
181 : // clip against texture polygon
182 0 : a2DHatchLines = basegfx::tools::clipPolyPolygonOnPolyPolygon(a2DHatchLines, aTexPolyPolygon, true, true);
183 : }
184 :
185 0 : if(a2DHatchLines.count())
186 : {
187 : // create 2d matrix with 2d vectors as column vectors and 2d point as offset, this represents
188 : // a coordinate system transformation from unit coordinates to the new coordinate system
189 0 : basegfx::B2DHomMatrix a2D;
190 0 : a2D.set(0, 0, a2X.getX());
191 0 : a2D.set(1, 0, a2X.getY());
192 0 : a2D.set(0, 1, a2Y.getX());
193 0 : a2D.set(1, 1, a2Y.getY());
194 0 : a2D.set(0, 2, a2N.getX());
195 0 : a2D.set(1, 2, a2N.getY());
196 :
197 : // invert that transformation, so we have a back-transformation from texture coordinates
198 : // to unit coordinates
199 0 : a2D.invert();
200 0 : a2DHatchLines.transform(a2D);
201 :
202 : // expand back-transformated geometry tpo 3D
203 0 : basegfx::B3DPolyPolygon a3DHatchLines(basegfx::tools::createB3DPolyPolygonFromB2DPolyPolygon(a2DHatchLines, 0.0));
204 :
205 : // create 3d matrix with 3d vectors as column vectors (0,0,1 as Z) and 3d point as offset, this represents
206 : // a coordinate system transformation from unit coordinates to the object's 3d coordinate system
207 0 : basegfx::B3DHomMatrix a3D;
208 0 : a3D.set(0, 0, a3X.getX());
209 0 : a3D.set(1, 0, a3X.getY());
210 0 : a3D.set(2, 0, a3X.getZ());
211 0 : a3D.set(0, 1, a3Y.getX());
212 0 : a3D.set(1, 1, a3Y.getY());
213 0 : a3D.set(2, 1, a3Y.getZ());
214 0 : a3D.set(0, 3, a3N.getX());
215 0 : a3D.set(1, 3, a3N.getY());
216 0 : a3D.set(2, 3, a3N.getZ());
217 :
218 : // transform hatch lines to 3D object coordinates
219 0 : a3DHatchLines.transform(a3D);
220 :
221 : // build primitives from this geometry
222 0 : const sal_uInt32 nHatchLines(a3DHatchLines.count());
223 :
224 0 : for(sal_uInt32 d(0); d < nHatchLines; d++)
225 : {
226 0 : const Primitive3DReference xRef(new PolygonHairlinePrimitive3D(a3DHatchLines.getB3DPolygon(d), aHatchColor));
227 0 : aDestination.push_back(xRef);
228 0 : }
229 0 : }
230 0 : }
231 : }
232 :
233 0 : break;
234 : }
235 : default :
236 : {
237 : // add reference to result
238 0 : aDestination.push_back(xReference);
239 0 : break;
240 : }
241 : }
242 : }
243 : else
244 : {
245 : // unknown implementation, add to result
246 0 : aDestination.push_back(xReference);
247 : }
248 : }
249 0 : }
250 :
251 : // prepare return value
252 0 : const sal_uInt32 nDestSize(aDestination.size());
253 0 : aRetval.realloc(nDestSize);
254 :
255 0 : for(sal_uInt32 b(0); b < nDestSize; b++)
256 : {
257 0 : aRetval[b] = aDestination[b];
258 0 : }
259 : }
260 :
261 0 : return aRetval;
262 : }
263 :
264 0 : HatchTexturePrimitive3D::HatchTexturePrimitive3D(
265 : const attribute::FillHatchAttribute& rHatch,
266 : const Primitive3DSequence& rChildren,
267 : const basegfx::B2DVector& rTextureSize,
268 : bool bModulate,
269 : bool bFilter)
270 : : TexturePrimitive3D(rChildren, rTextureSize, bModulate, bFilter),
271 : maHatch(rHatch),
272 0 : maBuffered3DDecomposition()
273 : {
274 0 : }
275 :
276 0 : bool HatchTexturePrimitive3D::operator==(const BasePrimitive3D& rPrimitive) const
277 : {
278 0 : if(TexturePrimitive3D::operator==(rPrimitive))
279 : {
280 0 : const HatchTexturePrimitive3D& rCompare = (HatchTexturePrimitive3D&)rPrimitive;
281 :
282 0 : return (getHatch() == rCompare.getHatch());
283 : }
284 :
285 0 : return false;
286 : }
287 :
288 0 : Primitive3DSequence HatchTexturePrimitive3D::get3DDecomposition(const geometry::ViewInformation3D& /*rViewInformation*/) const
289 : {
290 0 : ::osl::MutexGuard aGuard( m_aMutex );
291 :
292 0 : if(!getBuffered3DDecomposition().hasElements())
293 : {
294 0 : const Primitive3DSequence aNewSequence(impCreate3DDecomposition());
295 0 : const_cast< HatchTexturePrimitive3D* >(this)->setBuffered3DDecomposition(aNewSequence);
296 : }
297 :
298 0 : return getBuffered3DDecomposition();
299 : }
300 :
301 : // provide unique ID
302 0 : ImplPrimitrive3DIDBlock(HatchTexturePrimitive3D, PRIMITIVE3D_ID_HATCHTEXTUREPRIMITIVE3D)
303 :
304 : } // end of namespace primitive3d
305 : } // end of namespace drawinglayer
306 :
307 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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