109dbbe93SAndrew Rist /************************************************************** 2cdf0e10cSrcweir * 309dbbe93SAndrew Rist * Licensed to the Apache Software Foundation (ASF) under one 409dbbe93SAndrew Rist * or more contributor license agreements. See the NOTICE file 509dbbe93SAndrew Rist * distributed with this work for additional information 609dbbe93SAndrew Rist * regarding copyright ownership. The ASF licenses this file 709dbbe93SAndrew Rist * to you under the Apache License, Version 2.0 (the 809dbbe93SAndrew Rist * "License"); you may not use this file except in compliance 909dbbe93SAndrew Rist * with the License. You may obtain a copy of the License at 1009dbbe93SAndrew Rist * 1109dbbe93SAndrew Rist * http://www.apache.org/licenses/LICENSE-2.0 1209dbbe93SAndrew Rist * 1309dbbe93SAndrew Rist * Unless required by applicable law or agreed to in writing, 1409dbbe93SAndrew Rist * software distributed under the License is distributed on an 1509dbbe93SAndrew Rist * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 1609dbbe93SAndrew Rist * KIND, either express or implied. See the License for the 1709dbbe93SAndrew Rist * specific language governing permissions and limitations 1809dbbe93SAndrew Rist * under the License. 1909dbbe93SAndrew Rist * 2009dbbe93SAndrew Rist *************************************************************/ 2109dbbe93SAndrew Rist 2209dbbe93SAndrew Rist 23cdf0e10cSrcweir 24cdf0e10cSrcweir // MARKER(update_precomp.py): autogen include statement, do not remove 25cdf0e10cSrcweir #include "precompiled_basegfx.hxx" 26cdf0e10cSrcweir 27cdf0e10cSrcweir #include <basegfx/polygon/b2dpolygontools.hxx> 28cdf0e10cSrcweir #include <basegfx/polygon/b2dpolypolygontools.hxx> 29cdf0e10cSrcweir #include <basegfx/polygon/b2dpolygontools.hxx> 30cdf0e10cSrcweir #include <basegfx/polygon/b2dpolypolygon.hxx> 31cdf0e10cSrcweir #include <basegfx/matrix/b2dhommatrix.hxx> 32cdf0e10cSrcweir #include <basegfx/matrix/b2dhommatrixtools.hxx> 33cdf0e10cSrcweir #include <rtl/ustring.hxx> 34cdf0e10cSrcweir #include <rtl/math.hxx> 35cdf0e10cSrcweir 36cdf0e10cSrcweir namespace basegfx 37cdf0e10cSrcweir { 38cdf0e10cSrcweir namespace tools 39cdf0e10cSrcweir { 40cdf0e10cSrcweir namespace 41cdf0e10cSrcweir { 42cdf0e10cSrcweir void lcl_skipSpaces(sal_Int32& io_rPos, 43cdf0e10cSrcweir const ::rtl::OUString& rStr, 44cdf0e10cSrcweir const sal_Int32 nLen) 45cdf0e10cSrcweir { 46cdf0e10cSrcweir while( io_rPos < nLen && 47cdf0e10cSrcweir sal_Unicode(' ') == rStr[io_rPos] ) 48cdf0e10cSrcweir { 49cdf0e10cSrcweir ++io_rPos; 50cdf0e10cSrcweir } 51cdf0e10cSrcweir } 52cdf0e10cSrcweir 53cdf0e10cSrcweir void lcl_skipSpacesAndCommas(sal_Int32& io_rPos, 54cdf0e10cSrcweir const ::rtl::OUString& rStr, 55cdf0e10cSrcweir const sal_Int32 nLen) 56cdf0e10cSrcweir { 57cdf0e10cSrcweir while(io_rPos < nLen 58cdf0e10cSrcweir && (sal_Unicode(' ') == rStr[io_rPos] || sal_Unicode(',') == rStr[io_rPos])) 59cdf0e10cSrcweir { 60cdf0e10cSrcweir ++io_rPos; 61cdf0e10cSrcweir } 62cdf0e10cSrcweir } 63cdf0e10cSrcweir 64cdf0e10cSrcweir inline bool lcl_isOnNumberChar(const sal_Unicode aChar, bool bSignAllowed = true) 65cdf0e10cSrcweir { 66cdf0e10cSrcweir const bool bPredicate( (sal_Unicode('0') <= aChar && sal_Unicode('9') >= aChar) 67cdf0e10cSrcweir || (bSignAllowed && sal_Unicode('+') == aChar) 68cdf0e10cSrcweir || (bSignAllowed && sal_Unicode('-') == aChar) ); 69cdf0e10cSrcweir 70cdf0e10cSrcweir return bPredicate; 71cdf0e10cSrcweir } 72cdf0e10cSrcweir 73cdf0e10cSrcweir inline bool lcl_isOnNumberChar(const ::rtl::OUString& rStr, const sal_Int32 nPos, bool bSignAllowed = true) 74cdf0e10cSrcweir { 75cdf0e10cSrcweir return lcl_isOnNumberChar(rStr[nPos], 76cdf0e10cSrcweir bSignAllowed); 77cdf0e10cSrcweir } 78cdf0e10cSrcweir 79cdf0e10cSrcweir bool lcl_getDoubleChar(double& o_fRetval, 80cdf0e10cSrcweir sal_Int32& io_rPos, 81cdf0e10cSrcweir const ::rtl::OUString& rStr, 82cdf0e10cSrcweir const sal_Int32 /*nLen*/) 83cdf0e10cSrcweir { 84cdf0e10cSrcweir sal_Unicode aChar( rStr[io_rPos] ); 85cdf0e10cSrcweir ::rtl::OUStringBuffer sNumberString; 86cdf0e10cSrcweir 87cdf0e10cSrcweir if(sal_Unicode('+') == aChar || sal_Unicode('-') == aChar) 88cdf0e10cSrcweir { 89cdf0e10cSrcweir sNumberString.append(rStr[io_rPos]); 90cdf0e10cSrcweir aChar = rStr[++io_rPos]; 91cdf0e10cSrcweir } 92cdf0e10cSrcweir 93cdf0e10cSrcweir while((sal_Unicode('0') <= aChar && sal_Unicode('9') >= aChar) 94cdf0e10cSrcweir || sal_Unicode('.') == aChar) 95cdf0e10cSrcweir { 96cdf0e10cSrcweir sNumberString.append(rStr[io_rPos]); 97cdf0e10cSrcweir aChar = rStr[++io_rPos]; 98cdf0e10cSrcweir } 99cdf0e10cSrcweir 100cdf0e10cSrcweir if(sal_Unicode('e') == aChar || sal_Unicode('E') == aChar) 101cdf0e10cSrcweir { 102cdf0e10cSrcweir sNumberString.append(rStr[io_rPos]); 103cdf0e10cSrcweir aChar = rStr[++io_rPos]; 104cdf0e10cSrcweir 105cdf0e10cSrcweir if(sal_Unicode('+') == aChar || sal_Unicode('-') == aChar) 106cdf0e10cSrcweir { 107cdf0e10cSrcweir sNumberString.append(rStr[io_rPos]); 108cdf0e10cSrcweir aChar = rStr[++io_rPos]; 109cdf0e10cSrcweir } 110cdf0e10cSrcweir 111cdf0e10cSrcweir while(sal_Unicode('0') <= aChar && sal_Unicode('9') >= aChar) 112cdf0e10cSrcweir { 113cdf0e10cSrcweir sNumberString.append(rStr[io_rPos]); 114cdf0e10cSrcweir aChar = rStr[++io_rPos]; 115cdf0e10cSrcweir } 116cdf0e10cSrcweir } 117cdf0e10cSrcweir 118cdf0e10cSrcweir if(sNumberString.getLength()) 119cdf0e10cSrcweir { 120cdf0e10cSrcweir rtl_math_ConversionStatus eStatus; 121cdf0e10cSrcweir o_fRetval = ::rtl::math::stringToDouble( sNumberString.makeStringAndClear(), 122cdf0e10cSrcweir (sal_Unicode)('.'), 123cdf0e10cSrcweir (sal_Unicode)(','), 124cdf0e10cSrcweir &eStatus, 125cdf0e10cSrcweir NULL ); 126cdf0e10cSrcweir return ( eStatus == rtl_math_ConversionStatus_Ok ); 127cdf0e10cSrcweir } 128cdf0e10cSrcweir 129cdf0e10cSrcweir return false; 130cdf0e10cSrcweir } 131cdf0e10cSrcweir 132cdf0e10cSrcweir bool lcl_importDoubleAndSpaces( double& o_fRetval, 133cdf0e10cSrcweir sal_Int32& io_rPos, 134cdf0e10cSrcweir const ::rtl::OUString& rStr, 135cdf0e10cSrcweir const sal_Int32 nLen ) 136cdf0e10cSrcweir { 137cdf0e10cSrcweir if( !lcl_getDoubleChar(o_fRetval, io_rPos, rStr, nLen) ) 138cdf0e10cSrcweir return false; 139cdf0e10cSrcweir 140cdf0e10cSrcweir lcl_skipSpacesAndCommas(io_rPos, rStr, nLen); 141cdf0e10cSrcweir 142cdf0e10cSrcweir return true; 143cdf0e10cSrcweir } 144cdf0e10cSrcweir 145cdf0e10cSrcweir bool lcl_importNumberAndSpaces(sal_Int32& o_nRetval, 146cdf0e10cSrcweir sal_Int32& io_rPos, 147cdf0e10cSrcweir const ::rtl::OUString& rStr, 148cdf0e10cSrcweir const sal_Int32 nLen) 149cdf0e10cSrcweir { 150cdf0e10cSrcweir sal_Unicode aChar( rStr[io_rPos] ); 151cdf0e10cSrcweir ::rtl::OUStringBuffer sNumberString; 152cdf0e10cSrcweir 153cdf0e10cSrcweir if(sal_Unicode('+') == aChar || sal_Unicode('-') == aChar) 154cdf0e10cSrcweir { 155cdf0e10cSrcweir sNumberString.append(rStr[io_rPos]); 156cdf0e10cSrcweir aChar = rStr[++io_rPos]; 157cdf0e10cSrcweir } 158cdf0e10cSrcweir 159cdf0e10cSrcweir while(sal_Unicode('0') <= aChar && sal_Unicode('9') >= aChar) 160cdf0e10cSrcweir { 161cdf0e10cSrcweir sNumberString.append(rStr[io_rPos]); 162cdf0e10cSrcweir aChar = rStr[++io_rPos]; 163cdf0e10cSrcweir } 164cdf0e10cSrcweir 165cdf0e10cSrcweir if(sNumberString.getLength()) 166cdf0e10cSrcweir { 167cdf0e10cSrcweir o_nRetval = sNumberString.makeStringAndClear().toInt32(); 168cdf0e10cSrcweir lcl_skipSpacesAndCommas(io_rPos, rStr, nLen); 169cdf0e10cSrcweir 170cdf0e10cSrcweir return true; 171cdf0e10cSrcweir } 172cdf0e10cSrcweir 173cdf0e10cSrcweir return false; 174cdf0e10cSrcweir } 175cdf0e10cSrcweir 176cdf0e10cSrcweir void lcl_skipNumber(sal_Int32& io_rPos, 177cdf0e10cSrcweir const ::rtl::OUString& rStr, 178cdf0e10cSrcweir const sal_Int32 nLen) 179cdf0e10cSrcweir { 180cdf0e10cSrcweir bool bSignAllowed(true); 181cdf0e10cSrcweir 182cdf0e10cSrcweir while(io_rPos < nLen && lcl_isOnNumberChar(rStr, io_rPos, bSignAllowed)) 183cdf0e10cSrcweir { 184cdf0e10cSrcweir bSignAllowed = false; 185cdf0e10cSrcweir ++io_rPos; 186cdf0e10cSrcweir } 187cdf0e10cSrcweir } 188cdf0e10cSrcweir 189cdf0e10cSrcweir void lcl_skipDouble(sal_Int32& io_rPos, 190cdf0e10cSrcweir const ::rtl::OUString& rStr, 191cdf0e10cSrcweir const sal_Int32 /*nLen*/) 192cdf0e10cSrcweir { 193cdf0e10cSrcweir sal_Unicode aChar( rStr[io_rPos] ); 194cdf0e10cSrcweir 195cdf0e10cSrcweir if(sal_Unicode('+') == aChar || sal_Unicode('-') == aChar) 196cdf0e10cSrcweir aChar = rStr[++io_rPos]; 197cdf0e10cSrcweir 198cdf0e10cSrcweir while((sal_Unicode('0') <= aChar && sal_Unicode('9') >= aChar) 199cdf0e10cSrcweir || sal_Unicode('.') == aChar) 200cdf0e10cSrcweir { 201cdf0e10cSrcweir aChar = rStr[++io_rPos]; 202cdf0e10cSrcweir } 203cdf0e10cSrcweir 204cdf0e10cSrcweir if(sal_Unicode('e') == aChar || sal_Unicode('E') == aChar) 205cdf0e10cSrcweir { 206cdf0e10cSrcweir aChar = rStr[++io_rPos]; 207cdf0e10cSrcweir 208cdf0e10cSrcweir if(sal_Unicode('+') == aChar || sal_Unicode('-') == aChar) 209cdf0e10cSrcweir aChar = rStr[++io_rPos]; 210cdf0e10cSrcweir 211cdf0e10cSrcweir while(sal_Unicode('0') <= aChar && sal_Unicode('9') >= aChar) 212cdf0e10cSrcweir { 213cdf0e10cSrcweir aChar = rStr[++io_rPos]; 214cdf0e10cSrcweir } 215cdf0e10cSrcweir } 216cdf0e10cSrcweir } 217cdf0e10cSrcweir void lcl_skipNumberAndSpacesAndCommas(sal_Int32& io_rPos, 218cdf0e10cSrcweir const ::rtl::OUString& rStr, 219cdf0e10cSrcweir const sal_Int32 nLen) 220cdf0e10cSrcweir { 221cdf0e10cSrcweir lcl_skipNumber(io_rPos, rStr, nLen); 222cdf0e10cSrcweir lcl_skipSpacesAndCommas(io_rPos, rStr, nLen); 223cdf0e10cSrcweir } 224cdf0e10cSrcweir 225cdf0e10cSrcweir // #100617# Allow to skip doubles, too. 226cdf0e10cSrcweir void lcl_skipDoubleAndSpacesAndCommas(sal_Int32& io_rPos, 227cdf0e10cSrcweir const ::rtl::OUString& rStr, 228cdf0e10cSrcweir const sal_Int32 nLen) 229cdf0e10cSrcweir { 230cdf0e10cSrcweir lcl_skipDouble(io_rPos, rStr, nLen); 231cdf0e10cSrcweir lcl_skipSpacesAndCommas(io_rPos, rStr, nLen); 232cdf0e10cSrcweir } 233cdf0e10cSrcweir 234cdf0e10cSrcweir void lcl_putNumberChar( ::rtl::OUStringBuffer& rStr, 235cdf0e10cSrcweir double fValue ) 236cdf0e10cSrcweir { 237cdf0e10cSrcweir rStr.append( fValue ); 238cdf0e10cSrcweir } 239cdf0e10cSrcweir 240cdf0e10cSrcweir void lcl_putNumberCharWithSpace( ::rtl::OUStringBuffer& rStr, 241cdf0e10cSrcweir double fValue, 242cdf0e10cSrcweir double fOldValue, 243cdf0e10cSrcweir bool bUseRelativeCoordinates ) 244cdf0e10cSrcweir { 245cdf0e10cSrcweir if( bUseRelativeCoordinates ) 246cdf0e10cSrcweir fValue -= fOldValue; 247cdf0e10cSrcweir 248cdf0e10cSrcweir const sal_Int32 aLen( rStr.getLength() ); 249cdf0e10cSrcweir if(aLen) 250cdf0e10cSrcweir { 251cdf0e10cSrcweir if( lcl_isOnNumberChar(rStr.charAt(aLen - 1), false) && 252cdf0e10cSrcweir fValue >= 0.0 ) 253cdf0e10cSrcweir { 254cdf0e10cSrcweir rStr.append( sal_Unicode(' ') ); 255cdf0e10cSrcweir } 256cdf0e10cSrcweir } 257cdf0e10cSrcweir 258cdf0e10cSrcweir lcl_putNumberChar(rStr, fValue); 259cdf0e10cSrcweir } 260cdf0e10cSrcweir 261cdf0e10cSrcweir inline sal_Unicode lcl_getCommand( sal_Char cUpperCaseCommand, 262cdf0e10cSrcweir sal_Char cLowerCaseCommand, 263cdf0e10cSrcweir bool bUseRelativeCoordinates ) 264cdf0e10cSrcweir { 265cdf0e10cSrcweir return bUseRelativeCoordinates ? cLowerCaseCommand : cUpperCaseCommand; 266cdf0e10cSrcweir } 267cdf0e10cSrcweir } 268cdf0e10cSrcweir 269cdf0e10cSrcweir bool importFromSvgD(B2DPolyPolygon& o_rPolyPolygon, const ::rtl::OUString& rSvgDStatement) 270cdf0e10cSrcweir { 271cdf0e10cSrcweir o_rPolyPolygon.clear(); 272cdf0e10cSrcweir const sal_Int32 nLen(rSvgDStatement.getLength()); 273cdf0e10cSrcweir sal_Int32 nPos(0); 274cdf0e10cSrcweir bool bIsClosed(false); 275cdf0e10cSrcweir double nLastX( 0.0 ); 276cdf0e10cSrcweir double nLastY( 0.0 ); 277cdf0e10cSrcweir B2DPolygon aCurrPoly; 278cdf0e10cSrcweir 279cdf0e10cSrcweir // skip initial whitespace 280cdf0e10cSrcweir lcl_skipSpaces(nPos, rSvgDStatement, nLen); 281cdf0e10cSrcweir 282cdf0e10cSrcweir while(nPos < nLen) 283cdf0e10cSrcweir { 284cdf0e10cSrcweir bool bRelative(false); 285cdf0e10cSrcweir bool bMoveTo(false); 286cdf0e10cSrcweir const sal_Unicode aCurrChar(rSvgDStatement[nPos]); 287cdf0e10cSrcweir 288cdf0e10cSrcweir switch(aCurrChar) 289cdf0e10cSrcweir { 290cdf0e10cSrcweir case 'z' : 291cdf0e10cSrcweir case 'Z' : 292cdf0e10cSrcweir { 293cdf0e10cSrcweir nPos++; 294cdf0e10cSrcweir lcl_skipSpaces(nPos, rSvgDStatement, nLen); 295cdf0e10cSrcweir 296cdf0e10cSrcweir // remember closed state of current polygon 297cdf0e10cSrcweir bIsClosed = true; 298cdf0e10cSrcweir break; 299cdf0e10cSrcweir } 300cdf0e10cSrcweir 301cdf0e10cSrcweir case 'm' : 302cdf0e10cSrcweir case 'M' : 303cdf0e10cSrcweir { 304cdf0e10cSrcweir bMoveTo = true; 305cdf0e10cSrcweir // FALLTHROUGH intended 306cdf0e10cSrcweir } 307cdf0e10cSrcweir case 'l' : 308cdf0e10cSrcweir case 'L' : 309cdf0e10cSrcweir { 310cdf0e10cSrcweir if('m' == aCurrChar || 'l' == aCurrChar) 311cdf0e10cSrcweir { 312cdf0e10cSrcweir bRelative = true; 313cdf0e10cSrcweir } 314cdf0e10cSrcweir 315cdf0e10cSrcweir if(bMoveTo) 316cdf0e10cSrcweir { 317cdf0e10cSrcweir // new polygon start, finish old one 318cdf0e10cSrcweir if(aCurrPoly.count()) 319cdf0e10cSrcweir { 320cdf0e10cSrcweir // add current polygon 321cdf0e10cSrcweir if(bIsClosed) 322cdf0e10cSrcweir { 323cdf0e10cSrcweir closeWithGeometryChange(aCurrPoly); 324cdf0e10cSrcweir } 325cdf0e10cSrcweir 326cdf0e10cSrcweir o_rPolyPolygon.append(aCurrPoly); 327cdf0e10cSrcweir 328cdf0e10cSrcweir // reset import values 329cdf0e10cSrcweir bIsClosed = false; 330cdf0e10cSrcweir aCurrPoly.clear(); 331cdf0e10cSrcweir } 332cdf0e10cSrcweir } 333cdf0e10cSrcweir 334cdf0e10cSrcweir nPos++; 335cdf0e10cSrcweir lcl_skipSpaces(nPos, rSvgDStatement, nLen); 336cdf0e10cSrcweir 337cdf0e10cSrcweir while(nPos < nLen && lcl_isOnNumberChar(rSvgDStatement, nPos)) 338cdf0e10cSrcweir { 339cdf0e10cSrcweir double nX, nY; 340cdf0e10cSrcweir 341cdf0e10cSrcweir if(!lcl_importDoubleAndSpaces(nX, nPos, rSvgDStatement, nLen)) return false; 342cdf0e10cSrcweir if(!lcl_importDoubleAndSpaces(nY, nPos, rSvgDStatement, nLen)) return false; 343cdf0e10cSrcweir 344cdf0e10cSrcweir if(bRelative) 345cdf0e10cSrcweir { 346cdf0e10cSrcweir nX += nLastX; 347cdf0e10cSrcweir nY += nLastY; 348cdf0e10cSrcweir } 349cdf0e10cSrcweir 350cdf0e10cSrcweir // set last position 351cdf0e10cSrcweir nLastX = nX; 352cdf0e10cSrcweir nLastY = nY; 353cdf0e10cSrcweir 354cdf0e10cSrcweir // add point 355cdf0e10cSrcweir aCurrPoly.append(B2DPoint(nX, nY)); 356cdf0e10cSrcweir } 357cdf0e10cSrcweir break; 358cdf0e10cSrcweir } 359cdf0e10cSrcweir 360cdf0e10cSrcweir case 'h' : 361cdf0e10cSrcweir { 362cdf0e10cSrcweir bRelative = true; 363cdf0e10cSrcweir // FALLTHROUGH intended 364cdf0e10cSrcweir } 365cdf0e10cSrcweir case 'H' : 366cdf0e10cSrcweir { 367cdf0e10cSrcweir nPos++; 368cdf0e10cSrcweir lcl_skipSpaces(nPos, rSvgDStatement, nLen); 369cdf0e10cSrcweir 370cdf0e10cSrcweir while(nPos < nLen && lcl_isOnNumberChar(rSvgDStatement, nPos)) 371cdf0e10cSrcweir { 372cdf0e10cSrcweir double nX, nY(nLastY); 373cdf0e10cSrcweir 374cdf0e10cSrcweir if(!lcl_importDoubleAndSpaces(nX, nPos, rSvgDStatement, nLen)) return false; 375cdf0e10cSrcweir 376cdf0e10cSrcweir if(bRelative) 377cdf0e10cSrcweir { 378cdf0e10cSrcweir nX += nLastX; 379cdf0e10cSrcweir } 380cdf0e10cSrcweir 381cdf0e10cSrcweir // set last position 382cdf0e10cSrcweir nLastX = nX; 383cdf0e10cSrcweir 384cdf0e10cSrcweir // add point 385cdf0e10cSrcweir aCurrPoly.append(B2DPoint(nX, nY)); 386cdf0e10cSrcweir } 387cdf0e10cSrcweir break; 388cdf0e10cSrcweir } 389cdf0e10cSrcweir 390cdf0e10cSrcweir case 'v' : 391cdf0e10cSrcweir { 392cdf0e10cSrcweir bRelative = true; 393cdf0e10cSrcweir // FALLTHROUGH intended 394cdf0e10cSrcweir } 395cdf0e10cSrcweir case 'V' : 396cdf0e10cSrcweir { 397cdf0e10cSrcweir nPos++; 398cdf0e10cSrcweir lcl_skipSpaces(nPos, rSvgDStatement, nLen); 399cdf0e10cSrcweir 400cdf0e10cSrcweir while(nPos < nLen && lcl_isOnNumberChar(rSvgDStatement, nPos)) 401cdf0e10cSrcweir { 402cdf0e10cSrcweir double nX(nLastX), nY; 403cdf0e10cSrcweir 404cdf0e10cSrcweir if(!lcl_importDoubleAndSpaces(nY, nPos, rSvgDStatement, nLen)) return false; 405cdf0e10cSrcweir 406cdf0e10cSrcweir if(bRelative) 407cdf0e10cSrcweir { 408cdf0e10cSrcweir nY += nLastY; 409cdf0e10cSrcweir } 410cdf0e10cSrcweir 411cdf0e10cSrcweir // set last position 412cdf0e10cSrcweir nLastY = nY; 413cdf0e10cSrcweir 414cdf0e10cSrcweir // add point 415cdf0e10cSrcweir aCurrPoly.append(B2DPoint(nX, nY)); 416cdf0e10cSrcweir } 417cdf0e10cSrcweir break; 418cdf0e10cSrcweir } 419cdf0e10cSrcweir 420cdf0e10cSrcweir case 's' : 421cdf0e10cSrcweir { 422cdf0e10cSrcweir bRelative = true; 423cdf0e10cSrcweir // FALLTHROUGH intended 424cdf0e10cSrcweir } 425cdf0e10cSrcweir case 'S' : 426cdf0e10cSrcweir { 427cdf0e10cSrcweir nPos++; 428cdf0e10cSrcweir lcl_skipSpaces(nPos, rSvgDStatement, nLen); 429cdf0e10cSrcweir 430cdf0e10cSrcweir while(nPos < nLen && lcl_isOnNumberChar(rSvgDStatement, nPos)) 431cdf0e10cSrcweir { 432cdf0e10cSrcweir double nX, nY; 433cdf0e10cSrcweir double nX2, nY2; 434cdf0e10cSrcweir 435cdf0e10cSrcweir if(!lcl_importDoubleAndSpaces(nX2, nPos, rSvgDStatement, nLen)) return false; 436cdf0e10cSrcweir if(!lcl_importDoubleAndSpaces(nY2, nPos, rSvgDStatement, nLen)) return false; 437cdf0e10cSrcweir if(!lcl_importDoubleAndSpaces(nX, nPos, rSvgDStatement, nLen)) return false; 438cdf0e10cSrcweir if(!lcl_importDoubleAndSpaces(nY, nPos, rSvgDStatement, nLen)) return false; 439cdf0e10cSrcweir 440cdf0e10cSrcweir if(bRelative) 441cdf0e10cSrcweir { 442cdf0e10cSrcweir nX2 += nLastX; 443cdf0e10cSrcweir nY2 += nLastY; 444cdf0e10cSrcweir nX += nLastX; 445cdf0e10cSrcweir nY += nLastY; 446cdf0e10cSrcweir } 447cdf0e10cSrcweir 448cdf0e10cSrcweir // ensure existance of start point 449cdf0e10cSrcweir if(!aCurrPoly.count()) 450cdf0e10cSrcweir { 451cdf0e10cSrcweir aCurrPoly.append(B2DPoint(nLastX, nLastY)); 452cdf0e10cSrcweir } 453cdf0e10cSrcweir 454cdf0e10cSrcweir // get first control point. It's the reflection of the PrevControlPoint 455cdf0e10cSrcweir // of the last point. If not existent, use current point (see SVG) 456cdf0e10cSrcweir B2DPoint aPrevControl(B2DPoint(nLastX, nLastY)); 457cdf0e10cSrcweir const sal_uInt32 nIndex(aCurrPoly.count() - 1); 458cdf0e10cSrcweir 459cdf0e10cSrcweir if(aCurrPoly.areControlPointsUsed() && aCurrPoly.isPrevControlPointUsed(nIndex)) 460cdf0e10cSrcweir { 461cdf0e10cSrcweir const B2DPoint aPrevPoint(aCurrPoly.getB2DPoint(nIndex)); 462cdf0e10cSrcweir const B2DPoint aPrevControlPoint(aCurrPoly.getPrevControlPoint(nIndex)); 463cdf0e10cSrcweir 464cdf0e10cSrcweir // use mirrored previous control point 465cdf0e10cSrcweir aPrevControl.setX((2.0 * aPrevPoint.getX()) - aPrevControlPoint.getX()); 466cdf0e10cSrcweir aPrevControl.setY((2.0 * aPrevPoint.getY()) - aPrevControlPoint.getY()); 467cdf0e10cSrcweir } 468cdf0e10cSrcweir 469cdf0e10cSrcweir // append curved edge 470cdf0e10cSrcweir aCurrPoly.appendBezierSegment(aPrevControl, B2DPoint(nX2, nY2), B2DPoint(nX, nY)); 471cdf0e10cSrcweir 472cdf0e10cSrcweir // set last position 473cdf0e10cSrcweir nLastX = nX; 474cdf0e10cSrcweir nLastY = nY; 475cdf0e10cSrcweir } 476cdf0e10cSrcweir break; 477cdf0e10cSrcweir } 478cdf0e10cSrcweir 479cdf0e10cSrcweir case 'c' : 480cdf0e10cSrcweir { 481cdf0e10cSrcweir bRelative = true; 482cdf0e10cSrcweir // FALLTHROUGH intended 483cdf0e10cSrcweir } 484cdf0e10cSrcweir case 'C' : 485cdf0e10cSrcweir { 486cdf0e10cSrcweir nPos++; 487cdf0e10cSrcweir lcl_skipSpaces(nPos, rSvgDStatement, nLen); 488cdf0e10cSrcweir 489cdf0e10cSrcweir while(nPos < nLen && lcl_isOnNumberChar(rSvgDStatement, nPos)) 490cdf0e10cSrcweir { 491cdf0e10cSrcweir double nX, nY; 492cdf0e10cSrcweir double nX1, nY1; 493cdf0e10cSrcweir double nX2, nY2; 494cdf0e10cSrcweir 495cdf0e10cSrcweir if(!lcl_importDoubleAndSpaces(nX1, nPos, rSvgDStatement, nLen)) return false; 496cdf0e10cSrcweir if(!lcl_importDoubleAndSpaces(nY1, nPos, rSvgDStatement, nLen)) return false; 497cdf0e10cSrcweir if(!lcl_importDoubleAndSpaces(nX2, nPos, rSvgDStatement, nLen)) return false; 498cdf0e10cSrcweir if(!lcl_importDoubleAndSpaces(nY2, nPos, rSvgDStatement, nLen)) return false; 499cdf0e10cSrcweir if(!lcl_importDoubleAndSpaces(nX, nPos, rSvgDStatement, nLen)) return false; 500cdf0e10cSrcweir if(!lcl_importDoubleAndSpaces(nY, nPos, rSvgDStatement, nLen)) return false; 501cdf0e10cSrcweir 502cdf0e10cSrcweir if(bRelative) 503cdf0e10cSrcweir { 504cdf0e10cSrcweir nX1 += nLastX; 505cdf0e10cSrcweir nY1 += nLastY; 506cdf0e10cSrcweir nX2 += nLastX; 507cdf0e10cSrcweir nY2 += nLastY; 508cdf0e10cSrcweir nX += nLastX; 509cdf0e10cSrcweir nY += nLastY; 510cdf0e10cSrcweir } 511cdf0e10cSrcweir 512cdf0e10cSrcweir // ensure existance of start point 513cdf0e10cSrcweir if(!aCurrPoly.count()) 514cdf0e10cSrcweir { 515cdf0e10cSrcweir aCurrPoly.append(B2DPoint(nLastX, nLastY)); 516cdf0e10cSrcweir } 517cdf0e10cSrcweir 518cdf0e10cSrcweir // append curved edge 519cdf0e10cSrcweir aCurrPoly.appendBezierSegment(B2DPoint(nX1, nY1), B2DPoint(nX2, nY2), B2DPoint(nX, nY)); 520cdf0e10cSrcweir 521cdf0e10cSrcweir // set last position 522cdf0e10cSrcweir nLastX = nX; 523cdf0e10cSrcweir nLastY = nY; 524cdf0e10cSrcweir } 525cdf0e10cSrcweir break; 526cdf0e10cSrcweir } 527cdf0e10cSrcweir 528cdf0e10cSrcweir // #100617# quadratic beziers are imported as cubic ones 529cdf0e10cSrcweir case 'q' : 530cdf0e10cSrcweir { 531cdf0e10cSrcweir bRelative = true; 532cdf0e10cSrcweir // FALLTHROUGH intended 533cdf0e10cSrcweir } 534cdf0e10cSrcweir case 'Q' : 535cdf0e10cSrcweir { 536cdf0e10cSrcweir nPos++; 537cdf0e10cSrcweir lcl_skipSpaces(nPos, rSvgDStatement, nLen); 538cdf0e10cSrcweir 539cdf0e10cSrcweir while(nPos < nLen && lcl_isOnNumberChar(rSvgDStatement, nPos)) 540cdf0e10cSrcweir { 541cdf0e10cSrcweir double nX, nY; 542cdf0e10cSrcweir double nX1, nY1; 543cdf0e10cSrcweir 544cdf0e10cSrcweir if(!lcl_importDoubleAndSpaces(nX1, nPos, rSvgDStatement, nLen)) return false; 545cdf0e10cSrcweir if(!lcl_importDoubleAndSpaces(nY1, nPos, rSvgDStatement, nLen)) return false; 546cdf0e10cSrcweir if(!lcl_importDoubleAndSpaces(nX, nPos, rSvgDStatement, nLen)) return false; 547cdf0e10cSrcweir if(!lcl_importDoubleAndSpaces(nY, nPos, rSvgDStatement, nLen)) return false; 548cdf0e10cSrcweir 549cdf0e10cSrcweir if(bRelative) 550cdf0e10cSrcweir { 551cdf0e10cSrcweir nX1 += nLastX; 552cdf0e10cSrcweir nY1 += nLastY; 553cdf0e10cSrcweir nX += nLastX; 554cdf0e10cSrcweir nY += nLastY; 555cdf0e10cSrcweir } 556cdf0e10cSrcweir 557cdf0e10cSrcweir // calculate the cubic bezier coefficients from the quadratic ones 558cdf0e10cSrcweir const double nX1Prime((nX1 * 2.0 + nLastX) / 3.0); 559cdf0e10cSrcweir const double nY1Prime((nY1 * 2.0 + nLastY) / 3.0); 560cdf0e10cSrcweir const double nX2Prime((nX1 * 2.0 + nX) / 3.0); 561cdf0e10cSrcweir const double nY2Prime((nY1 * 2.0 + nY) / 3.0); 562cdf0e10cSrcweir 563cdf0e10cSrcweir // ensure existance of start point 564cdf0e10cSrcweir if(!aCurrPoly.count()) 565cdf0e10cSrcweir { 566cdf0e10cSrcweir aCurrPoly.append(B2DPoint(nLastX, nLastY)); 567cdf0e10cSrcweir } 568cdf0e10cSrcweir 569cdf0e10cSrcweir // append curved edge 570cdf0e10cSrcweir aCurrPoly.appendBezierSegment(B2DPoint(nX1Prime, nY1Prime), B2DPoint(nX2Prime, nY2Prime), B2DPoint(nX, nY)); 571cdf0e10cSrcweir 572cdf0e10cSrcweir // set last position 573cdf0e10cSrcweir nLastX = nX; 574cdf0e10cSrcweir nLastY = nY; 575cdf0e10cSrcweir } 576cdf0e10cSrcweir break; 577cdf0e10cSrcweir } 578cdf0e10cSrcweir 579cdf0e10cSrcweir // #100617# relative quadratic beziers are imported as cubic 580cdf0e10cSrcweir case 't' : 581cdf0e10cSrcweir { 582cdf0e10cSrcweir bRelative = true; 583cdf0e10cSrcweir // FALLTHROUGH intended 584cdf0e10cSrcweir } 585cdf0e10cSrcweir case 'T' : 586cdf0e10cSrcweir { 587cdf0e10cSrcweir nPos++; 588cdf0e10cSrcweir lcl_skipSpaces(nPos, rSvgDStatement, nLen); 589cdf0e10cSrcweir 590cdf0e10cSrcweir while(nPos < nLen && lcl_isOnNumberChar(rSvgDStatement, nPos)) 591cdf0e10cSrcweir { 592cdf0e10cSrcweir double nX, nY; 593cdf0e10cSrcweir 594cdf0e10cSrcweir if(!lcl_importDoubleAndSpaces(nX, nPos, rSvgDStatement, nLen)) return false; 595cdf0e10cSrcweir if(!lcl_importDoubleAndSpaces(nY, nPos, rSvgDStatement, nLen)) return false; 596cdf0e10cSrcweir 597cdf0e10cSrcweir if(bRelative) 598cdf0e10cSrcweir { 599cdf0e10cSrcweir nX += nLastX; 600cdf0e10cSrcweir nY += nLastY; 601cdf0e10cSrcweir } 602cdf0e10cSrcweir 603cdf0e10cSrcweir // ensure existance of start point 604cdf0e10cSrcweir if(!aCurrPoly.count()) 605cdf0e10cSrcweir { 606cdf0e10cSrcweir aCurrPoly.append(B2DPoint(nLastX, nLastY)); 607cdf0e10cSrcweir } 608cdf0e10cSrcweir 609cdf0e10cSrcweir // get first control point. It's the reflection of the PrevControlPoint 610cdf0e10cSrcweir // of the last point. If not existent, use current point (see SVG) 611cdf0e10cSrcweir B2DPoint aPrevControl(B2DPoint(nLastX, nLastY)); 612cdf0e10cSrcweir const sal_uInt32 nIndex(aCurrPoly.count() - 1); 613cdf0e10cSrcweir const B2DPoint aPrevPoint(aCurrPoly.getB2DPoint(nIndex)); 614cdf0e10cSrcweir 615cdf0e10cSrcweir if(aCurrPoly.areControlPointsUsed() && aCurrPoly.isPrevControlPointUsed(nIndex)) 616cdf0e10cSrcweir { 617cdf0e10cSrcweir const B2DPoint aPrevControlPoint(aCurrPoly.getPrevControlPoint(nIndex)); 618cdf0e10cSrcweir 619cdf0e10cSrcweir // use mirrored previous control point 620cdf0e10cSrcweir aPrevControl.setX((2.0 * aPrevPoint.getX()) - aPrevControlPoint.getX()); 621cdf0e10cSrcweir aPrevControl.setY((2.0 * aPrevPoint.getY()) - aPrevControlPoint.getY()); 622cdf0e10cSrcweir } 623cdf0e10cSrcweir 624cdf0e10cSrcweir if(!aPrevControl.equal(aPrevPoint)) 625cdf0e10cSrcweir { 626cdf0e10cSrcweir // there is a prev control point, and we have the already mirrored one 627cdf0e10cSrcweir // in aPrevControl. We also need the quadratic control point for this 628cdf0e10cSrcweir // new quadratic segment to calculate the 2nd cubic control point 629cdf0e10cSrcweir const B2DPoint aQuadControlPoint( 630cdf0e10cSrcweir ((3.0 * aPrevControl.getX()) - aPrevPoint.getX()) / 2.0, 631cdf0e10cSrcweir ((3.0 * aPrevControl.getY()) - aPrevPoint.getY()) / 2.0); 632cdf0e10cSrcweir 633cdf0e10cSrcweir // calculate the cubic bezier coefficients from the quadratic ones. 634cdf0e10cSrcweir const double nX2Prime((aQuadControlPoint.getX() * 2.0 + nX) / 3.0); 635cdf0e10cSrcweir const double nY2Prime((aQuadControlPoint.getY() * 2.0 + nY) / 3.0); 636cdf0e10cSrcweir 637cdf0e10cSrcweir // append curved edge, use mirrored cubic control point directly 638cdf0e10cSrcweir aCurrPoly.appendBezierSegment(aPrevControl, B2DPoint(nX2Prime, nY2Prime), B2DPoint(nX, nY)); 639cdf0e10cSrcweir } 640cdf0e10cSrcweir else 641cdf0e10cSrcweir { 642cdf0e10cSrcweir // when no previous control, SVG says to use current point -> straight line. 643cdf0e10cSrcweir // Just add end point 644cdf0e10cSrcweir aCurrPoly.append(B2DPoint(nX, nY)); 645cdf0e10cSrcweir } 646cdf0e10cSrcweir 647cdf0e10cSrcweir // set last position 648cdf0e10cSrcweir nLastX = nX; 649cdf0e10cSrcweir nLastY = nY; 650cdf0e10cSrcweir } 651cdf0e10cSrcweir break; 652cdf0e10cSrcweir } 653cdf0e10cSrcweir 654cdf0e10cSrcweir case 'a' : 655cdf0e10cSrcweir { 656cdf0e10cSrcweir bRelative = true; 657cdf0e10cSrcweir // FALLTHROUGH intended 658cdf0e10cSrcweir } 659cdf0e10cSrcweir case 'A' : 660cdf0e10cSrcweir { 661cdf0e10cSrcweir nPos++; 662cdf0e10cSrcweir lcl_skipSpaces(nPos, rSvgDStatement, nLen); 663cdf0e10cSrcweir 664cdf0e10cSrcweir while(nPos < nLen && lcl_isOnNumberChar(rSvgDStatement, nPos)) 665cdf0e10cSrcweir { 666cdf0e10cSrcweir double nX, nY; 667cdf0e10cSrcweir double fRX, fRY, fPhi; 668cdf0e10cSrcweir sal_Int32 bLargeArcFlag, bSweepFlag; 669cdf0e10cSrcweir 670cdf0e10cSrcweir if(!lcl_importDoubleAndSpaces(fRX, nPos, rSvgDStatement, nLen)) return false; 671cdf0e10cSrcweir if(!lcl_importDoubleAndSpaces(fRY, nPos, rSvgDStatement, nLen)) return false; 672cdf0e10cSrcweir if(!lcl_importDoubleAndSpaces(fPhi, nPos, rSvgDStatement, nLen)) return false; 673cdf0e10cSrcweir if(!lcl_importNumberAndSpaces(bLargeArcFlag, nPos, rSvgDStatement, nLen)) return false; 674cdf0e10cSrcweir if(!lcl_importNumberAndSpaces(bSweepFlag, nPos, rSvgDStatement, nLen)) return false; 675cdf0e10cSrcweir if(!lcl_importDoubleAndSpaces(nX, nPos, rSvgDStatement, nLen)) return false; 676cdf0e10cSrcweir if(!lcl_importDoubleAndSpaces(nY, nPos, rSvgDStatement, nLen)) return false; 677cdf0e10cSrcweir 678cdf0e10cSrcweir if(bRelative) 679cdf0e10cSrcweir { 680cdf0e10cSrcweir nX += nLastX; 681cdf0e10cSrcweir nY += nLastY; 682cdf0e10cSrcweir } 683cdf0e10cSrcweir 684cdf0e10cSrcweir const B2DPoint aPrevPoint(aCurrPoly.getB2DPoint(aCurrPoly.count() - 1)); 685cdf0e10cSrcweir 686cdf0e10cSrcweir if( nX == nLastX && nY == nLastY ) 687cdf0e10cSrcweir continue; // start==end -> skip according to SVG spec 688cdf0e10cSrcweir 689cdf0e10cSrcweir if( fRX == 0.0 || fRY == 0.0 ) 690cdf0e10cSrcweir { 691cdf0e10cSrcweir // straight line segment according to SVG spec 692cdf0e10cSrcweir aCurrPoly.append(B2DPoint(nX, nY)); 693cdf0e10cSrcweir } 694cdf0e10cSrcweir else 695cdf0e10cSrcweir { 696cdf0e10cSrcweir // normalize according to SVG spec 697cdf0e10cSrcweir fRX=fabs(fRX); fRY=fabs(fRY); 698cdf0e10cSrcweir 699cdf0e10cSrcweir // from the SVG spec, appendix F.6.4 700cdf0e10cSrcweir 701cdf0e10cSrcweir // |x1'| |cos phi sin phi| |(x1 - x2)/2| 702cdf0e10cSrcweir // |y1'| = |-sin phi cos phi| |(y1 - y2)/2| 703cdf0e10cSrcweir const B2DPoint p1(nLastX, nLastY); 704cdf0e10cSrcweir const B2DPoint p2(nX, nY); 705cdf0e10cSrcweir B2DHomMatrix aTransform(basegfx::tools::createRotateB2DHomMatrix(-fPhi*M_PI/180)); 706cdf0e10cSrcweir 707cdf0e10cSrcweir const B2DPoint p1_prime( aTransform * B2DPoint(((p1-p2)/2.0)) ); 708cdf0e10cSrcweir 709cdf0e10cSrcweir // ______________________________________ rx y1' 710cdf0e10cSrcweir // |cx'| + / rx^2 ry^2 - rx^2 y1'^2 - ry^2 x1^2 ry 711cdf0e10cSrcweir // |cy'| =-/ rx^2y1'^2 + ry^2 x1'^2 - ry x1' 712cdf0e10cSrcweir // rx 713cdf0e10cSrcweir // chose + if f_A != f_S 714cdf0e10cSrcweir // chose - if f_A = f_S 715cdf0e10cSrcweir B2DPoint aCenter_prime; 716cdf0e10cSrcweir const double fRadicant( 717cdf0e10cSrcweir (fRX*fRX*fRY*fRY - fRX*fRX*p1_prime.getY()*p1_prime.getY() - fRY*fRY*p1_prime.getX()*p1_prime.getX())/ 718cdf0e10cSrcweir (fRX*fRX*p1_prime.getY()*p1_prime.getY() + fRY*fRY*p1_prime.getX()*p1_prime.getX())); 719cdf0e10cSrcweir if( fRadicant < 0.0 ) 720cdf0e10cSrcweir { 721cdf0e10cSrcweir // no solution - according to SVG 722cdf0e10cSrcweir // spec, scale up ellipse 723cdf0e10cSrcweir // uniformly such that it passes 724cdf0e10cSrcweir // through end points (denominator 725cdf0e10cSrcweir // of radicant solved for fRY, 726cdf0e10cSrcweir // with s=fRX/fRY) 727cdf0e10cSrcweir const double fRatio(fRX/fRY); 728cdf0e10cSrcweir const double fRadicant2( 729cdf0e10cSrcweir p1_prime.getY()*p1_prime.getY() + 730cdf0e10cSrcweir p1_prime.getX()*p1_prime.getX()/(fRatio*fRatio)); 731cdf0e10cSrcweir if( fRadicant2 < 0.0 ) 732cdf0e10cSrcweir { 733cdf0e10cSrcweir // only trivial solution, one 734cdf0e10cSrcweir // of the axes 0 -> straight 735cdf0e10cSrcweir // line segment according to 736cdf0e10cSrcweir // SVG spec 737cdf0e10cSrcweir aCurrPoly.append(B2DPoint(nX, nY)); 738cdf0e10cSrcweir continue; 739cdf0e10cSrcweir } 740cdf0e10cSrcweir 741cdf0e10cSrcweir fRY=sqrt(fRadicant2); 742cdf0e10cSrcweir fRX=fRatio*fRY; 743cdf0e10cSrcweir 744cdf0e10cSrcweir // keep center_prime forced to (0,0) 745cdf0e10cSrcweir } 746cdf0e10cSrcweir else 747cdf0e10cSrcweir { 748cdf0e10cSrcweir const double fFactor( 749cdf0e10cSrcweir (bLargeArcFlag==bSweepFlag ? -1.0 : 1.0) * 750cdf0e10cSrcweir sqrt(fRadicant)); 751cdf0e10cSrcweir 752cdf0e10cSrcweir // actually calculate center_prime 753cdf0e10cSrcweir aCenter_prime = B2DPoint( 754cdf0e10cSrcweir fFactor*fRX*p1_prime.getY()/fRY, 755cdf0e10cSrcweir -fFactor*fRY*p1_prime.getX()/fRX); 756cdf0e10cSrcweir } 757cdf0e10cSrcweir 758cdf0e10cSrcweir // + u - v 759cdf0e10cSrcweir // angle(u,v) = arccos( ------------ ) (take the sign of (ux vy - uy vx)) 760cdf0e10cSrcweir // - ||u|| ||v|| 761cdf0e10cSrcweir 762cdf0e10cSrcweir // 1 | (x1' - cx')/rx | 763cdf0e10cSrcweir // theta1 = angle(( ), | | ) 764cdf0e10cSrcweir // 0 | (y1' - cy')/ry | 765cdf0e10cSrcweir const B2DPoint aRadii(fRX,fRY); 766cdf0e10cSrcweir double fTheta1( 767cdf0e10cSrcweir B2DVector(1.0,0.0).angle( 768cdf0e10cSrcweir (p1_prime-aCenter_prime)/aRadii)); 769cdf0e10cSrcweir 770cdf0e10cSrcweir // |1| | (-x1' - cx')/rx | 771cdf0e10cSrcweir // theta2 = angle( | | , | | ) 772cdf0e10cSrcweir // |0| | (-y1' - cy')/ry | 773cdf0e10cSrcweir double fTheta2( 774cdf0e10cSrcweir B2DVector(1.0,0.0).angle( 775cdf0e10cSrcweir (-p1_prime-aCenter_prime)/aRadii)); 776cdf0e10cSrcweir 777cdf0e10cSrcweir // map both angles to [0,2pi) 778cdf0e10cSrcweir fTheta1 = fmod(2*M_PI+fTheta1,2*M_PI); 779cdf0e10cSrcweir fTheta2 = fmod(2*M_PI+fTheta2,2*M_PI); 780cdf0e10cSrcweir 781cdf0e10cSrcweir // make sure the large arc is taken 782cdf0e10cSrcweir // (since 783cdf0e10cSrcweir // createPolygonFromEllipseSegment() 784cdf0e10cSrcweir // normalizes to e.g. cw arc) 785*ddde725dSArmin Le Grand 786*ddde725dSArmin Le Grand // ALG: In my opinion flipping the segment only 787*ddde725dSArmin Le Grand // depends on the sweep flag. At least, this gives 788*ddde725dSArmin Le Grand // correct results forthe SVG example (see SVG doc 8.3.8 ff) 789*ddde725dSArmin Le Grand // 790*ddde725dSArmin Le Grand //const bool bFlipSegment( (bLargeArcFlag!=0) == 791*ddde725dSArmin Le Grand // (fmod(fTheta2+2*M_PI-fTheta1, 792*ddde725dSArmin Le Grand // 2*M_PI)<M_PI) ); 793*ddde725dSArmin Le Grand const bool bFlipSegment(!bSweepFlag); 794*ddde725dSArmin Le Grand 795cdf0e10cSrcweir if( bFlipSegment ) 796cdf0e10cSrcweir std::swap(fTheta1,fTheta2); 797cdf0e10cSrcweir 798cdf0e10cSrcweir // finally, create bezier polygon from this 799cdf0e10cSrcweir B2DPolygon aSegment( 800cdf0e10cSrcweir tools::createPolygonFromUnitEllipseSegment( 801cdf0e10cSrcweir fTheta1, fTheta2 )); 802cdf0e10cSrcweir 803cdf0e10cSrcweir // transform ellipse by rotation & move to final center 804cdf0e10cSrcweir aTransform = basegfx::tools::createScaleB2DHomMatrix(fRX, fRY); 805cdf0e10cSrcweir aTransform.translate(aCenter_prime.getX(), 806cdf0e10cSrcweir aCenter_prime.getY()); 807cdf0e10cSrcweir aTransform.rotate(fPhi*M_PI/180); 808cdf0e10cSrcweir const B2DPoint aOffset((p1+p2)/2.0); 809cdf0e10cSrcweir aTransform.translate(aOffset.getX(), 810cdf0e10cSrcweir aOffset.getY()); 811cdf0e10cSrcweir aSegment.transform(aTransform); 812cdf0e10cSrcweir 813cdf0e10cSrcweir // createPolygonFromEllipseSegment() 814cdf0e10cSrcweir // always creates arcs that are 815cdf0e10cSrcweir // positively oriented - flip polygon 816cdf0e10cSrcweir // if we swapped angles above 817cdf0e10cSrcweir if( bFlipSegment ) 818cdf0e10cSrcweir aSegment.flip(); 819cdf0e10cSrcweir aCurrPoly.append(aSegment); 820cdf0e10cSrcweir } 821cdf0e10cSrcweir 822cdf0e10cSrcweir // set last position 823cdf0e10cSrcweir nLastX = nX; 824cdf0e10cSrcweir nLastY = nY; 825cdf0e10cSrcweir } 826cdf0e10cSrcweir break; 827cdf0e10cSrcweir } 828cdf0e10cSrcweir 829cdf0e10cSrcweir default: 830cdf0e10cSrcweir { 831cdf0e10cSrcweir OSL_ENSURE(false, "importFromSvgD(): skipping tags in svg:d element (unknown)!"); 832cdf0e10cSrcweir OSL_TRACE("importFromSvgD(): skipping tags in svg:d element (unknown: \"%c\")!", aCurrChar); 833cdf0e10cSrcweir ++nPos; 834cdf0e10cSrcweir break; 835cdf0e10cSrcweir } 836cdf0e10cSrcweir } 837cdf0e10cSrcweir } 838cdf0e10cSrcweir 839cdf0e10cSrcweir if(aCurrPoly.count()) 840cdf0e10cSrcweir { 841cdf0e10cSrcweir // end-process last poly 842cdf0e10cSrcweir if(bIsClosed) 843cdf0e10cSrcweir { 844cdf0e10cSrcweir closeWithGeometryChange(aCurrPoly); 845cdf0e10cSrcweir } 846cdf0e10cSrcweir 847cdf0e10cSrcweir o_rPolyPolygon.append(aCurrPoly); 848cdf0e10cSrcweir } 849cdf0e10cSrcweir 850cdf0e10cSrcweir return true; 851cdf0e10cSrcweir } 852cdf0e10cSrcweir 853cdf0e10cSrcweir bool importFromSvgPoints( B2DPolygon& o_rPoly, 854cdf0e10cSrcweir const ::rtl::OUString& rSvgPointsAttribute ) 855cdf0e10cSrcweir { 856cdf0e10cSrcweir o_rPoly.clear(); 857cdf0e10cSrcweir const sal_Int32 nLen(rSvgPointsAttribute.getLength()); 858cdf0e10cSrcweir sal_Int32 nPos(0); 859cdf0e10cSrcweir double nX, nY; 860cdf0e10cSrcweir 861cdf0e10cSrcweir // skip initial whitespace 862cdf0e10cSrcweir lcl_skipSpaces(nPos, rSvgPointsAttribute, nLen); 863cdf0e10cSrcweir 864cdf0e10cSrcweir while(nPos < nLen) 865cdf0e10cSrcweir { 866cdf0e10cSrcweir if(!lcl_importDoubleAndSpaces(nX, nPos, rSvgPointsAttribute, nLen)) return false; 867cdf0e10cSrcweir if(!lcl_importDoubleAndSpaces(nY, nPos, rSvgPointsAttribute, nLen)) return false; 868cdf0e10cSrcweir 869cdf0e10cSrcweir // add point 870cdf0e10cSrcweir o_rPoly.append(B2DPoint(nX, nY)); 871cdf0e10cSrcweir 872cdf0e10cSrcweir // skip to next number, or finish 873cdf0e10cSrcweir lcl_skipSpaces(nPos, rSvgPointsAttribute, nLen); 874cdf0e10cSrcweir } 875cdf0e10cSrcweir 876cdf0e10cSrcweir return true; 877cdf0e10cSrcweir } 878cdf0e10cSrcweir 879cdf0e10cSrcweir ::rtl::OUString exportToSvgD( 880cdf0e10cSrcweir const B2DPolyPolygon& rPolyPolygon, 881cdf0e10cSrcweir bool bUseRelativeCoordinates, 882cdf0e10cSrcweir bool bDetectQuadraticBeziers) 883cdf0e10cSrcweir { 884cdf0e10cSrcweir const sal_uInt32 nCount(rPolyPolygon.count()); 885cdf0e10cSrcweir ::rtl::OUStringBuffer aResult; 886cdf0e10cSrcweir B2DPoint aCurrentSVGPosition(0.0, 0.0); // SVG assumes (0,0) as the initial current point 887cdf0e10cSrcweir 888cdf0e10cSrcweir for(sal_uInt32 i(0); i < nCount; i++) 889cdf0e10cSrcweir { 890cdf0e10cSrcweir const B2DPolygon aPolygon(rPolyPolygon.getB2DPolygon(i)); 891cdf0e10cSrcweir const sal_uInt32 nPointCount(aPolygon.count()); 892cdf0e10cSrcweir 893cdf0e10cSrcweir if(nPointCount) 894cdf0e10cSrcweir { 895cdf0e10cSrcweir const bool bPolyUsesControlPoints(aPolygon.areControlPointsUsed()); 896cdf0e10cSrcweir const sal_uInt32 nEdgeCount(aPolygon.isClosed() ? nPointCount : nPointCount - 1); 897cdf0e10cSrcweir sal_Unicode aLastSVGCommand(' '); // last SVG command char 898cdf0e10cSrcweir B2DPoint aLeft, aRight; // for quadratic bezier test 899cdf0e10cSrcweir 900cdf0e10cSrcweir // handle polygon start point 901cdf0e10cSrcweir B2DPoint aEdgeStart(aPolygon.getB2DPoint(0)); 902cdf0e10cSrcweir aResult.append(lcl_getCommand('M', 'm', bUseRelativeCoordinates)); 903cdf0e10cSrcweir lcl_putNumberCharWithSpace(aResult, aEdgeStart.getX(), aCurrentSVGPosition.getX(), bUseRelativeCoordinates); 904cdf0e10cSrcweir lcl_putNumberCharWithSpace(aResult, aEdgeStart.getY(), aCurrentSVGPosition.getY(), bUseRelativeCoordinates); 905cdf0e10cSrcweir aLastSVGCommand = lcl_getCommand('L', 'l', bUseRelativeCoordinates); 906cdf0e10cSrcweir aCurrentSVGPosition = aEdgeStart; 907cdf0e10cSrcweir 908cdf0e10cSrcweir for(sal_uInt32 nIndex(0); nIndex < nEdgeCount; nIndex++) 909cdf0e10cSrcweir { 910cdf0e10cSrcweir // prepare access to next point 911cdf0e10cSrcweir const sal_uInt32 nNextIndex((nIndex + 1) % nPointCount); 912cdf0e10cSrcweir const B2DPoint aEdgeEnd(aPolygon.getB2DPoint(nNextIndex)); 913cdf0e10cSrcweir 914cdf0e10cSrcweir // handle edge from (aEdgeStart, aEdgeEnd) using indices (nIndex, nNextIndex) 915cdf0e10cSrcweir const bool bEdgeIsBezier(bPolyUsesControlPoints 916cdf0e10cSrcweir && (aPolygon.isNextControlPointUsed(nIndex) || aPolygon.isPrevControlPointUsed(nNextIndex))); 917cdf0e10cSrcweir 918cdf0e10cSrcweir if(bEdgeIsBezier) 919cdf0e10cSrcweir { 920cdf0e10cSrcweir // handle bezier edge 921cdf0e10cSrcweir const B2DPoint aControlEdgeStart(aPolygon.getNextControlPoint(nIndex)); 922cdf0e10cSrcweir const B2DPoint aControlEdgeEnd(aPolygon.getPrevControlPoint(nNextIndex)); 923cdf0e10cSrcweir bool bIsQuadraticBezier(false); 924cdf0e10cSrcweir 925cdf0e10cSrcweir // check continuity at current edge's start point. For SVG, do NOT use an 926cdf0e10cSrcweir // existing continuity since no 'S' or 's' statement should be written. At 927cdf0e10cSrcweir // import, that 'previous' control vector is not available. SVG documentation 928cdf0e10cSrcweir // says for interpretation: 929cdf0e10cSrcweir // 930cdf0e10cSrcweir // "(If there is no previous command or if the previous command was 931cdf0e10cSrcweir // not an C, c, S or s, assume the first control point is coincident 932cdf0e10cSrcweir // with the current point.)" 933cdf0e10cSrcweir // 934cdf0e10cSrcweir // That's what is done from our import, so avoid exporting it as first statement 935cdf0e10cSrcweir // is necessary. 936cdf0e10cSrcweir const bool bSymmetricAtEdgeStart( 937cdf0e10cSrcweir 0 != nIndex 938cdf0e10cSrcweir && CONTINUITY_C2 == aPolygon.getContinuityInPoint(nIndex)); 939cdf0e10cSrcweir 940cdf0e10cSrcweir if(bDetectQuadraticBeziers) 941cdf0e10cSrcweir { 942cdf0e10cSrcweir // check for quadratic beziers - that's 943cdf0e10cSrcweir // the case if both control points are in 944cdf0e10cSrcweir // the same place when they are prolonged 945cdf0e10cSrcweir // to the common quadratic control point 946cdf0e10cSrcweir // 947cdf0e10cSrcweir // Left: P = (3P1 - P0) / 2 948cdf0e10cSrcweir // Right: P = (3P2 - P3) / 2 949cdf0e10cSrcweir aLeft = B2DPoint((3.0 * aControlEdgeStart - aEdgeStart) / 2.0); 950cdf0e10cSrcweir aRight= B2DPoint((3.0 * aControlEdgeEnd - aEdgeEnd) / 2.0); 951cdf0e10cSrcweir bIsQuadraticBezier = aLeft.equal(aRight); 952cdf0e10cSrcweir } 953cdf0e10cSrcweir 954cdf0e10cSrcweir if(bIsQuadraticBezier) 955cdf0e10cSrcweir { 956cdf0e10cSrcweir // approximately equal, export as quadratic bezier 957cdf0e10cSrcweir if(bSymmetricAtEdgeStart) 958cdf0e10cSrcweir { 959cdf0e10cSrcweir const sal_Unicode aCommand(lcl_getCommand('T', 't', bUseRelativeCoordinates)); 960cdf0e10cSrcweir 961cdf0e10cSrcweir if(aLastSVGCommand != aCommand) 962cdf0e10cSrcweir { 963cdf0e10cSrcweir aResult.append(aCommand); 964cdf0e10cSrcweir aLastSVGCommand = aCommand; 965cdf0e10cSrcweir } 966cdf0e10cSrcweir 967cdf0e10cSrcweir lcl_putNumberCharWithSpace(aResult, aEdgeEnd.getX(), aCurrentSVGPosition.getX(), bUseRelativeCoordinates); 968cdf0e10cSrcweir lcl_putNumberCharWithSpace(aResult, aEdgeEnd.getY(), aCurrentSVGPosition.getY(), bUseRelativeCoordinates); 969cdf0e10cSrcweir aLastSVGCommand = aCommand; 970cdf0e10cSrcweir aCurrentSVGPosition = aEdgeEnd; 971cdf0e10cSrcweir } 972cdf0e10cSrcweir else 973cdf0e10cSrcweir { 974cdf0e10cSrcweir const sal_Unicode aCommand(lcl_getCommand('Q', 'q', bUseRelativeCoordinates)); 975cdf0e10cSrcweir 976cdf0e10cSrcweir if(aLastSVGCommand != aCommand) 977cdf0e10cSrcweir { 978cdf0e10cSrcweir aResult.append(aCommand); 979cdf0e10cSrcweir aLastSVGCommand = aCommand; 980cdf0e10cSrcweir } 981cdf0e10cSrcweir 982cdf0e10cSrcweir lcl_putNumberCharWithSpace(aResult, aLeft.getX(), aCurrentSVGPosition.getX(), bUseRelativeCoordinates); 983cdf0e10cSrcweir lcl_putNumberCharWithSpace(aResult, aLeft.getY(), aCurrentSVGPosition.getY(), bUseRelativeCoordinates); 984cdf0e10cSrcweir lcl_putNumberCharWithSpace(aResult, aEdgeEnd.getX(), aCurrentSVGPosition.getX(), bUseRelativeCoordinates); 985cdf0e10cSrcweir lcl_putNumberCharWithSpace(aResult, aEdgeEnd.getY(), aCurrentSVGPosition.getY(), bUseRelativeCoordinates); 986cdf0e10cSrcweir aLastSVGCommand = aCommand; 987cdf0e10cSrcweir aCurrentSVGPosition = aEdgeEnd; 988cdf0e10cSrcweir } 989cdf0e10cSrcweir } 990cdf0e10cSrcweir else 991cdf0e10cSrcweir { 992cdf0e10cSrcweir // export as cubic bezier 993cdf0e10cSrcweir if(bSymmetricAtEdgeStart) 994cdf0e10cSrcweir { 995cdf0e10cSrcweir const sal_Unicode aCommand(lcl_getCommand('S', 's', bUseRelativeCoordinates)); 996cdf0e10cSrcweir 997cdf0e10cSrcweir if(aLastSVGCommand != aCommand) 998cdf0e10cSrcweir { 999cdf0e10cSrcweir aResult.append(aCommand); 1000cdf0e10cSrcweir aLastSVGCommand = aCommand; 1001cdf0e10cSrcweir } 1002cdf0e10cSrcweir 1003cdf0e10cSrcweir lcl_putNumberCharWithSpace(aResult, aControlEdgeEnd.getX(), aCurrentSVGPosition.getX(), bUseRelativeCoordinates); 1004cdf0e10cSrcweir lcl_putNumberCharWithSpace(aResult, aControlEdgeEnd.getY(), aCurrentSVGPosition.getY(), bUseRelativeCoordinates); 1005cdf0e10cSrcweir lcl_putNumberCharWithSpace(aResult, aEdgeEnd.getX(), aCurrentSVGPosition.getX(), bUseRelativeCoordinates); 1006cdf0e10cSrcweir lcl_putNumberCharWithSpace(aResult, aEdgeEnd.getY(), aCurrentSVGPosition.getY(), bUseRelativeCoordinates); 1007cdf0e10cSrcweir aLastSVGCommand = aCommand; 1008cdf0e10cSrcweir aCurrentSVGPosition = aEdgeEnd; 1009cdf0e10cSrcweir } 1010cdf0e10cSrcweir else 1011cdf0e10cSrcweir { 1012cdf0e10cSrcweir const sal_Unicode aCommand(lcl_getCommand('C', 'c', bUseRelativeCoordinates)); 1013cdf0e10cSrcweir 1014cdf0e10cSrcweir if(aLastSVGCommand != aCommand) 1015cdf0e10cSrcweir { 1016cdf0e10cSrcweir aResult.append(aCommand); 1017cdf0e10cSrcweir aLastSVGCommand = aCommand; 1018cdf0e10cSrcweir } 1019cdf0e10cSrcweir 1020cdf0e10cSrcweir lcl_putNumberCharWithSpace(aResult, aControlEdgeStart.getX(), aCurrentSVGPosition.getX(), bUseRelativeCoordinates); 1021cdf0e10cSrcweir lcl_putNumberCharWithSpace(aResult, aControlEdgeStart.getY(), aCurrentSVGPosition.getY(), bUseRelativeCoordinates); 1022cdf0e10cSrcweir lcl_putNumberCharWithSpace(aResult, aControlEdgeEnd.getX(), aCurrentSVGPosition.getX(), bUseRelativeCoordinates); 1023cdf0e10cSrcweir lcl_putNumberCharWithSpace(aResult, aControlEdgeEnd.getY(), aCurrentSVGPosition.getY(), bUseRelativeCoordinates); 1024cdf0e10cSrcweir lcl_putNumberCharWithSpace(aResult, aEdgeEnd.getX(), aCurrentSVGPosition.getX(), bUseRelativeCoordinates); 1025cdf0e10cSrcweir lcl_putNumberCharWithSpace(aResult, aEdgeEnd.getY(), aCurrentSVGPosition.getY(), bUseRelativeCoordinates); 1026cdf0e10cSrcweir aLastSVGCommand = aCommand; 1027cdf0e10cSrcweir aCurrentSVGPosition = aEdgeEnd; 1028cdf0e10cSrcweir } 1029cdf0e10cSrcweir } 1030cdf0e10cSrcweir } 1031cdf0e10cSrcweir else 1032cdf0e10cSrcweir { 1033cdf0e10cSrcweir // straight edge 1034cdf0e10cSrcweir if(0 == nNextIndex) 1035cdf0e10cSrcweir { 1036cdf0e10cSrcweir // it's a closed polygon's last edge and it's not a bezier edge, so there is 1037cdf0e10cSrcweir // no need to write it 1038cdf0e10cSrcweir } 1039cdf0e10cSrcweir else 1040cdf0e10cSrcweir { 1041cdf0e10cSrcweir const bool bXEqual(aEdgeStart.getX() == aEdgeEnd.getX()); 1042cdf0e10cSrcweir const bool bYEqual(aEdgeStart.getY() == aEdgeEnd.getY()); 1043cdf0e10cSrcweir 1044cdf0e10cSrcweir if(bXEqual && bYEqual) 1045cdf0e10cSrcweir { 1046cdf0e10cSrcweir // point is a double point; do not export at all 1047cdf0e10cSrcweir } 1048cdf0e10cSrcweir else if(bXEqual) 1049cdf0e10cSrcweir { 1050cdf0e10cSrcweir // export as vertical line 1051cdf0e10cSrcweir const sal_Unicode aCommand(lcl_getCommand('V', 'v', bUseRelativeCoordinates)); 1052cdf0e10cSrcweir 1053cdf0e10cSrcweir if(aLastSVGCommand != aCommand) 1054cdf0e10cSrcweir { 1055cdf0e10cSrcweir aResult.append(aCommand); 1056cdf0e10cSrcweir aLastSVGCommand = aCommand; 1057cdf0e10cSrcweir } 1058cdf0e10cSrcweir 1059cdf0e10cSrcweir lcl_putNumberCharWithSpace(aResult, aEdgeEnd.getY(), aCurrentSVGPosition.getY(), bUseRelativeCoordinates); 1060cdf0e10cSrcweir aCurrentSVGPosition = aEdgeEnd; 1061cdf0e10cSrcweir } 1062cdf0e10cSrcweir else if(bYEqual) 1063cdf0e10cSrcweir { 1064cdf0e10cSrcweir // export as horizontal line 1065cdf0e10cSrcweir const sal_Unicode aCommand(lcl_getCommand('H', 'h', bUseRelativeCoordinates)); 1066cdf0e10cSrcweir 1067cdf0e10cSrcweir if(aLastSVGCommand != aCommand) 1068cdf0e10cSrcweir { 1069cdf0e10cSrcweir aResult.append(aCommand); 1070cdf0e10cSrcweir aLastSVGCommand = aCommand; 1071cdf0e10cSrcweir } 1072cdf0e10cSrcweir 1073cdf0e10cSrcweir lcl_putNumberCharWithSpace(aResult, aEdgeEnd.getX(), aCurrentSVGPosition.getX(), bUseRelativeCoordinates); 1074cdf0e10cSrcweir aCurrentSVGPosition = aEdgeEnd; 1075cdf0e10cSrcweir } 1076cdf0e10cSrcweir else 1077cdf0e10cSrcweir { 1078cdf0e10cSrcweir // export as line 1079cdf0e10cSrcweir const sal_Unicode aCommand(lcl_getCommand('L', 'l', bUseRelativeCoordinates)); 1080cdf0e10cSrcweir 1081cdf0e10cSrcweir if(aLastSVGCommand != aCommand) 1082cdf0e10cSrcweir { 1083cdf0e10cSrcweir aResult.append(aCommand); 1084cdf0e10cSrcweir aLastSVGCommand = aCommand; 1085cdf0e10cSrcweir } 1086cdf0e10cSrcweir 1087cdf0e10cSrcweir lcl_putNumberCharWithSpace(aResult, aEdgeEnd.getX(), aCurrentSVGPosition.getX(), bUseRelativeCoordinates); 1088cdf0e10cSrcweir lcl_putNumberCharWithSpace(aResult, aEdgeEnd.getY(), aCurrentSVGPosition.getY(), bUseRelativeCoordinates); 1089cdf0e10cSrcweir aCurrentSVGPosition = aEdgeEnd; 1090cdf0e10cSrcweir } 1091cdf0e10cSrcweir } 1092cdf0e10cSrcweir } 1093cdf0e10cSrcweir 1094cdf0e10cSrcweir // prepare edge start for next loop step 1095cdf0e10cSrcweir aEdgeStart = aEdgeEnd; 1096cdf0e10cSrcweir } 1097cdf0e10cSrcweir 1098cdf0e10cSrcweir // close path if closed poly (Z and z are equivalent here, but looks nicer when case is matched) 1099cdf0e10cSrcweir if(aPolygon.isClosed()) 1100cdf0e10cSrcweir { 1101cdf0e10cSrcweir aResult.append(lcl_getCommand('Z', 'z', bUseRelativeCoordinates)); 1102cdf0e10cSrcweir } 1103cdf0e10cSrcweir } 1104cdf0e10cSrcweir } 1105cdf0e10cSrcweir 1106cdf0e10cSrcweir return aResult.makeStringAndClear(); 1107cdf0e10cSrcweir } 1108cdf0e10cSrcweir } 1109cdf0e10cSrcweir } 1110cdf0e10cSrcweir 1111cdf0e10cSrcweir // eof 1112