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Diffstat (limited to 'dviware/dvisvgm/src/TriangularPatch.hpp')
| -rw-r--r-- | dviware/dvisvgm/src/TriangularPatch.hpp | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/dviware/dvisvgm/src/TriangularPatch.hpp b/dviware/dvisvgm/src/TriangularPatch.hpp new file mode 100644 index 0000000000..8c6405ef08 --- /dev/null +++ b/dviware/dvisvgm/src/TriangularPatch.hpp @@ -0,0 +1,62 @@ +/************************************************************************* +** TriangularPatch.hpp ** +** ** +** This file is part of dvisvgm -- a fast DVI to SVG converter ** +** Copyright (C) 2005-2019 Martin Gieseking <martin.gieseking@uos.de> ** +** ** +** 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 <http://www.gnu.org/licenses/>. ** +*************************************************************************/ + +#ifndef TRIANGULARPATCH_HPP +#define TRIANGULARPATCH_HPP + +#include "Color.hpp" +#include "Pair.hpp" +#include "ShadingPatch.hpp" + +class TriangularPatch : public ShadingPatch { + public: + TriangularPatch (); + explicit TriangularPatch (Color::ColorSpace cspace) : ShadingPatch(cspace) {} + TriangularPatch (const PointVec &points, const ColorVec &colors, Color::ColorSpace cspace, int edgeflag, TriangularPatch *patch); + int psShadingType() const override {return 4;} + DPair valueAt (double u, double v) const; + Color colorAt (double u, double v) const; + Color averageColor() const override; + void setPoints (const PointVec &points, int edgeflag, ShadingPatch *patch) override; + void setPoints (const DPair &p1, const DPair &p2, const DPair &p3); + void setColors (const ColorVec &colors, int edgeflag, ShadingPatch *patch) override; + void setColors (const Color &c1, const Color &c2, const Color &c3); + void approximate (int gridsize, bool overlap, double delta, Callback &listener) const override; + void getBBox (BoundingBox &bbox) const override; + void getBoundaryPath(GraphicsPath<double> &path) const override; + int numPoints (int edgeflag) const override {return edgeflag == 0 ? 3 : 1;} + int numColors (int edgeflag) const override {return edgeflag == 0 ? 3 : 1;} + + protected: + Color averageColor (const Color &c1, const Color &c2, const Color &c3) const; + + private: + DPair _points[3]; + Color _colors[3]; +}; + + +class LatticeTriangularPatch : public TriangularPatch { + public: + explicit LatticeTriangularPatch (Color::ColorSpace cspace) : TriangularPatch(cspace) {} + int psShadingType() const override {return 5;} +}; + +#endif |