diff options
Diffstat (limited to 'Build/source/texk/dvisvgm/dvisvgm-1.2.1/tests/MatrixTest.cpp')
-rw-r--r-- | Build/source/texk/dvisvgm/dvisvgm-1.2.1/tests/MatrixTest.cpp | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/Build/source/texk/dvisvgm/dvisvgm-1.2.1/tests/MatrixTest.cpp b/Build/source/texk/dvisvgm/dvisvgm-1.2.1/tests/MatrixTest.cpp new file mode 100644 index 00000000000..f01878900e1 --- /dev/null +++ b/Build/source/texk/dvisvgm/dvisvgm-1.2.1/tests/MatrixTest.cpp @@ -0,0 +1,151 @@ +/************************************************************************* +** MatrixTest.cpp ** +** ** +** This file is part of dvisvgm -- the DVI to SVG converter ** +** Copyright (C) 2005-2013 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 <vector> +#include "Matrix.h" + +using namespace std; + + +TEST(MatrixTest, svg) { + double v1[] = {1,2,3,4,5,6,7,8,9}; + Matrix m1(v1); + ostringstream oss; + m1.write(oss); + EXPECT_EQ(oss.str(), "((1,2,3),(4,5,6),(7,8,9))"); + EXPECT_EQ(m1.getSVG(), "matrix(1 4 2 5 3 6)"); + + double v2[] = {1,2}; + Matrix m2(v2, 2); + oss.str(""); + m2.write(oss); + EXPECT_EQ(oss.str(), "((1,2,0),(0,1,0),(0,0,1))"); + EXPECT_EQ(m2.getSVG(), "matrix(1 0 2 1 0 0)"); +} + + +TEST(MatrixTest, transpose) { + double v[] = {1,2,3,4,5,6,7,8,9}; + Matrix m(v); + m.transpose(); + ostringstream oss; + m.write(oss); + EXPECT_EQ(oss.str(), "((1,4,7),(2,5,8),(3,6,9))"); + EXPECT_EQ(m.getSVG(), "matrix(1 2 4 5 7 8)"); +} + + +TEST(MatrixTest, scale) { + ScalingMatrix m(2,2); + DPair p = m*DPair(3,3); + EXPECT_DOUBLE_EQ(p.x(), 6); + EXPECT_DOUBLE_EQ(p.y(), 6); + + m = ScalingMatrix(-2,-2); + p = m*DPair(3,3); + EXPECT_DOUBLE_EQ(p.x(), -6); + EXPECT_DOUBLE_EQ(p.y(), -6); +} + + +TEST(MatrixTest, rotate) { + RotationMatrix m(90); + DPair p = m*DPair(2,0); + EXPECT_NEAR(p.x(), 0, 0.0000000001); + EXPECT_NEAR(p.y(), 2, 0.0000000001); + + p = m*p; + EXPECT_NEAR(p.x(), -2, 0.0000000001); + EXPECT_NEAR(p.y(), 0, 0.0000000001); +} + + +TEST(MatrixTest, checks) { + Matrix m(1); + EXPECT_TRUE(m.isIdentity()); + double tx, ty; + EXPECT_TRUE(m.isTranslation(tx, ty)); + EXPECT_EQ(tx, 0); + EXPECT_EQ(ty, 0); + m.translate(1,2); + EXPECT_TRUE(m.isTranslation(tx, ty)); + EXPECT_EQ(tx, 1); + EXPECT_EQ(ty, 2); + m.scale(2, 2); + EXPECT_FALSE(m.isTranslation(tx, ty)); +} + + +TEST(MatrixTest, vec) { + vector<double> v; + for (int i=1; i <= 15; ++i) + v.push_back(i); + Matrix m(v); + ostringstream oss; + m.write(oss); + EXPECT_EQ(oss.str(), "((1,2,3),(4,5,6),(7,8,9))"); + oss.str(""); + + m.set(v, 2); + m.write(oss); + EXPECT_EQ(oss.str(), "((3,4,5),(6,7,8),(9,10,11))"); +} + + +TEST(MatrixTest, det) { + Matrix m1(1); + EXPECT_EQ(det(m1), 1); + + double v2[] = {1,2,3, 4,5,6, 7,8,9}; + Matrix m2(v2); + EXPECT_EQ(det(m2), 1*5*9 + 2*6*7 + 3*4*8 - 3*5*7 - 2*4*9 - 1*6*8); + + EXPECT_EQ(det(m2, 0, 0), 5*9-6*8); + EXPECT_EQ(det(m2, 0, 1), 4*9-6*7); + EXPECT_EQ(det(m2, 0, 2), 4*8-5*7); + EXPECT_EQ(det(m2, 1, 0), 2*9-3*8); + + double v3[] = {1,1,1, 2,2,2, 3,3,3}; + Matrix m3(v3); + EXPECT_EQ(det(m2), 0); + m3.transpose(); + EXPECT_EQ(det(m2), 0); +} + + +TEST(MatrixTest, invert) { + Matrix m1(1); + EXPECT_EQ(m1.invert(), m1); + + double v2[] = {1,2,3, 2,3,1, 3,1,2}; + Matrix m2(v2); + EXPECT_EQ(det(m2), -18); + + double v3[] = {5,-1,-7, -1,-7,5, -7,5,-1}; + Matrix m3(v3); + + m3 *= 1.0/det(m2); + m2.invert(); + for (int i=0; i < 3; ++i) + for (int j=0; j < 3; ++j) + EXPECT_DOUBLE_EQ(m2.get(i,j), m3.get(i,j)); +} |