diff options
Diffstat (limited to 'Build/source/texk/dvisvgm/dvisvgm-src/tests/EllipticalArcTest.cpp')
-rw-r--r-- | Build/source/texk/dvisvgm/dvisvgm-src/tests/EllipticalArcTest.cpp | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/tests/EllipticalArcTest.cpp b/Build/source/texk/dvisvgm/dvisvgm-src/tests/EllipticalArcTest.cpp new file mode 100644 index 00000000000..127f7b08e3a --- /dev/null +++ b/Build/source/texk/dvisvgm/dvisvgm-src/tests/EllipticalArcTest.cpp @@ -0,0 +1,142 @@ +/************************************************************************* +** EllipticalArcTest.cpp ** +** ** +** 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/>. ** +*************************************************************************/ + +#include <gtest/gtest.h> +#include <sstream> +#include "EllipticalArc.hpp" +#include "utility.hpp" + +using namespace std; + +#define EXPECT_NEAR_PAIR(p1, p2, eps) \ + EXPECT_NEAR(p1.x(), p2.x(), eps); \ + EXPECT_NEAR(p1.y(), p2.y(), eps) + + +TEST(EllipticalArcTest, construct1) { + EllipticalArc arc(DPair(125,75), 100, 50, math::deg2rad(30), 1, 1, DPair(225, 125)); + EXPECT_FALSE(arc.isStraightLine()); + EXPECT_EQ(arc.startPoint(), DPair(125,75)); + EXPECT_EQ(arc.endPoint(), DPair(225,125)); + EXPECT_EQ(arc.rx(), 100); + EXPECT_EQ(arc.ry(), 50); + EXPECT_NEAR(math::rad2deg(arc.rotationAngle()), 30, 0.0001); + EXPECT_TRUE(arc.largeArc()); + EXPECT_TRUE(arc.sweepPositive()); +} + + +TEST(EllipticalArcTest, construct2) { + // radii two small, check automatic adaption + EllipticalArc arc(DPair(125,75), 20, 10, math::deg2rad(30), 1, 1, DPair(225, 125)); + EXPECT_FALSE(arc.isStraightLine()); + EXPECT_EQ(arc.startPoint(), DPair(125,75)); + EXPECT_EQ(arc.endPoint(), DPair(225,125)); + EXPECT_NEAR(arc.rx(), 56.2, 0.01); + EXPECT_NEAR(arc.ry(), 28.1, 0.01); + EXPECT_NEAR(math::rad2deg(arc.rotationAngle()), 30, 0.0001); + EXPECT_TRUE(arc.largeArc()); + EXPECT_TRUE(arc.sweepPositive()); +} + + +TEST(EllipticalArcTest, construct3) { + EXPECT_TRUE(EllipticalArc(DPair(125,75), 0, 10, math::deg2rad(30), 1, 1, DPair(225, 125)).isStraightLine()); + EXPECT_TRUE(EllipticalArc(DPair(125,75), 20, 0, math::deg2rad(30), 1, 1, DPair(225, 125)).isStraightLine()); + EXPECT_TRUE(EllipticalArc(DPair(125,75), 0, 0, math::deg2rad(30), 1, 1, DPair(225, 125)).isStraightLine()); +} + + +TEST(EllipticalArcTest, construct4) { + // center parameterization + EllipticalArc arc(DPair(100,100), 100, 50, math::deg2rad(30), math::deg2rad(30), math::deg2rad(80)); + EXPECT_FALSE(arc.isStraightLine()); + EXPECT_NEAR_PAIR(arc.startPoint(), DPair(152.452, 164.952), 0.001); + EXPECT_NEAR_PAIR(arc.endPoint(), DPair(50.856, 123.589), 0.001); + EXPECT_NEAR(arc.rx(), 100, 0.1); + EXPECT_NEAR(arc.ry(), 50, 0.1); + EXPECT_NEAR(math::rad2deg(arc.rotationAngle()), 30, 0.0001); + EXPECT_FALSE(arc.largeArc()); + EXPECT_TRUE(arc.sweepPositive()); +} + + +TEST(EllipticalArcTest, transform) { + EllipticalArc arc(DPair(125,75), 100, 50, math::deg2rad(30), 1, 1, DPair(225, 125)); + Matrix m(1); + m.scale(1,2).rotate(30).xskewByAngle(15).rotate(20).yskewByAngle(-20); + arc.transform(m); + EXPECT_NEAR_PAIR(arc.startPoint(), DPair(13.8871, 204.752), 0.001); + EXPECT_NEAR_PAIR(arc.endPoint(), DPair(35.957, 350.121), 0.001); + EXPECT_NEAR(arc.rx(), 154.73, 0.001); + EXPECT_NEAR(arc.ry(), 64.629, 0.001); + EXPECT_NEAR(math::rad2deg(arc.rotationAngle()), -81.748, 0.001); + EXPECT_TRUE(arc.largeArc()); + EXPECT_TRUE(arc.sweepPositive()); +} + + +TEST(EllipticalArcTest, bbox1) { + EllipticalArc arc(DPair(125,75), 100, 50, math::deg2rad(30), 1, 1, DPair(225, 125)); + BoundingBox bbox = arc.getBBox(); + EXPECT_NEAR(bbox.minX(), 96.854, 0.001); + EXPECT_NEAR(bbox.minY(), -6.633, 0.001); + EXPECT_NEAR(bbox.width(), 180.278, 0.001); + EXPECT_NEAR(bbox.height(), 132.288, 0.001); +} + + +TEST(EllipticalArcTest, bbox2) { + EllipticalArc arc(DPair(125,75), 100, 50, math::deg2rad(30), 0, 1, DPair(225, 125)); + BoundingBox bbox = arc.getBBox(); + EXPECT_NEAR(bbox.minX(), 125, 0.1); + EXPECT_NEAR(bbox.minY(), 75, 0.1); + EXPECT_NEAR(bbox.width(), 100, 0.1); + EXPECT_NEAR(bbox.height(), 50, 0.1); +} + + +TEST(EllipticalArcTest, approximate1) { + EllipticalArc arc(DPair(125,75), 100, 50, math::deg2rad(30), 1, 1, DPair(225, 125)); + auto beziers = arc.approximate(); + ASSERT_EQ(beziers.size(), 4u); + DPair data[4][4] = { + {DPair(125, 75), DPair(96.271, 46.768), DPair(88.655, 17.402), DPair(106.223, 2.602)}, + {DPair(106.223, 2.602), DPair(123.791, -12.198), DPair(162.434, -8.971), DPair(201.493, 10.558)}, + {DPair(201.493, 10.558), DPair(240.551, 30.088), DPair(270.89, 61.351), DPair(276.289, 87.635)}, + {DPair(276.289, 87.635), DPair(281.688, 113.919), DPair(260.884, 129.074), DPair(225, 125)} + }; + for (int i=0; i < 4; i++) { + for (int j=0; j < 4; j++) { + EXPECT_NEAR_PAIR(beziers[i].point(j), data[i][j], 0.001); + } + } +} + + +TEST(EllipticalArcTest, approximate2) { + EllipticalArc arc(DPair(125,75), 100, 50, math::deg2rad(30), 0, 1, DPair(225, 125)); + auto beziers = arc.approximate(); + ASSERT_EQ(beziers.size(), 1u); + DPair data[] = {DPair(125, 75), DPair(158.522, 78.806), DPair(198.163, 98.627), DPair(225, 125)}; + for (int j=0; j < 4; j++) { + EXPECT_NEAR_PAIR(beziers[0].point(j), data[j], 0.001); + } +} |