/************************************************************************* ** ShadingPatch.cpp ** ** ** ** This file is part of dvisvgm -- the DVI to SVG converter ** ** Copyright (C) 2005-2015 Martin Gieseking ** ** ** ** This program is free software; you can redistribute it and/or ** ** modify it under the terms of the GNU General Public License as ** ** published by the Free Software Foundation; either version 3 of ** ** the License, or (at your option) any later version. ** ** ** ** This program 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 General Public License for more details. ** ** ** ** You should have received a copy of the GNU General Public License ** ** along with this program; if not, see . ** *************************************************************************/ #include #include "ShadingPatch.h" #include "TensorProductPatch.h" #include "TriangularPatch.h" using namespace std; /** Get functions to get/set the current color depending on the assigned color space. */ void ShadingPatch::colorQueryFuncs (ColorGetter &getter, ColorSetter &setter) const { switch (_colorspace) { case Color::CMYK_SPACE: getter = &Color::getCMYK; setter = &Color::setCMYK; break; case Color::LAB_SPACE: getter = &Color::getLab; setter = &Color::setLab; break; case Color::RGB_SPACE: getter = &Color::getRGB; setter = &Color::setRGB; break; case Color::GRAY_SPACE: getter = &Color::getGray; setter = &Color::setGray; } } /** Factory method: Creates a shading patch object depending on the given PostScript shading type. */ ShadingPatch* ShadingPatch::create (int psShadingType, Color::ColorSpace cspace) { switch (psShadingType) { case 4: return new TriangularPatch(cspace); case 5: return new LatticeTriangularPatch(cspace); case 6: return new CoonsPatch(cspace); case 7: return new TensorProductPatch(cspace); } ostringstream oss; if (psShadingType > 0 && psShadingType < 4) oss << "shading type " << psShadingType << " not supported"; else oss << "invalid shading type " << psShadingType; throw ShadingException(oss.str()); }