diff options
| -rw-r--r-- | tests/meson.build | 1 | ||||
| -rw-r--r-- | tests/testmatrix.c | 205 |
2 files changed, 206 insertions, 0 deletions
diff --git a/tests/meson.build b/tests/meson.build index eff95dca..54345d3b 100644 --- a/tests/meson.build +++ b/tests/meson.build @@ -24,6 +24,7 @@ tests = [ [ 'testcolor' ], [ 'testscript' ], [ 'testlanguage' ], + [ 'testmatrix' ], ] if build_pangoft2 diff --git a/tests/testmatrix.c b/tests/testmatrix.c new file mode 100644 index 00000000..403dece1 --- /dev/null +++ b/tests/testmatrix.c @@ -0,0 +1,205 @@ +/* Pango + * testmatrix.c: Test program for PangoMatrix + * + * Copyright (C) 2021 Matthias Clasen + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library 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 + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#include <glib.h> +#include <math.h> +#include <pango/pango.h> + +#define matrix_equal(m1, m2) \ + (G_APPROX_VALUE ((m1)->xx, (m2)->xx, 0.0001) && \ + G_APPROX_VALUE ((m1)->xy, (m2)->xy, 0.0001) && \ + G_APPROX_VALUE ((m1)->yx, (m2)->yx, 0.0001) && \ + G_APPROX_VALUE ((m1)->yy, (m2)->yy, 0.0001) && \ + G_APPROX_VALUE ((m1)->x0, (m2)->x0, 0.0001) && \ + G_APPROX_VALUE ((m1)->y0, (m2)->y0, 0.0001)) + +static void +test_matrix_translate (void) +{ + PangoMatrix m = PANGO_MATRIX_INIT; + PangoMatrix m2 = PANGO_MATRIX_INIT; + + pango_matrix_translate (&m, 10, 10); + pango_matrix_translate (&m, -10, -10); + + g_assert_true (matrix_equal (&m, &m2)); +} + +static void +test_matrix_rotate (void) +{ + PangoMatrix m = PANGO_MATRIX_INIT; + PangoMatrix m2 = PANGO_MATRIX_INIT; + + pango_matrix_rotate (&m, 90); + pango_matrix_rotate (&m, 90); + pango_matrix_rotate (&m, 90); + pango_matrix_rotate (&m, 90); + + g_assert_true (matrix_equal (&m, &m2)); +} + +static void +test_matrix_scale(void) +{ + PangoMatrix m = PANGO_MATRIX_INIT; + PangoMatrix m2 = PANGO_MATRIX_INIT; + + pango_matrix_scale (&m, 4, 5); + m2.xx = 4; + m2.yy = 5; + + g_assert_true (matrix_equal (&m, &m2)); +} + +static void +test_matrix_concat (void) +{ + PangoMatrix m = PANGO_MATRIX_INIT; + PangoMatrix id = PANGO_MATRIX_INIT; + PangoMatrix *m2; + + pango_matrix_rotate (&m, 120); + m2 = pango_matrix_copy (&m); + pango_matrix_concat (m2, &m); + pango_matrix_concat (m2, &m); + + g_assert_true (matrix_equal (&id, m2)); + + pango_matrix_free (m2); +} + +static void +test_matrix_font_scale (void) +{ + PangoMatrix m = PANGO_MATRIX_INIT; + double x, y; + + pango_matrix_scale (&m, 2, 3); + + pango_matrix_get_font_scale_factors (&m, &x, &y); + g_assert_cmpfloat (x, ==, 2); + g_assert_cmpfloat (y, ==, 3); + g_assert_cmpfloat (pango_matrix_get_font_scale_factor (&m), ==, 3); + + pango_matrix_rotate (&m, 90); + pango_matrix_get_font_scale_factors (&m, &x, &y); + g_assert_cmpfloat (x, ==, 3); + g_assert_cmpfloat (y, ==, 2); +} + +static void +test_matrix_transform_point (void) +{ + PangoMatrix m = PANGO_MATRIX_INIT; + double x, y; + + pango_matrix_translate (&m, 1, 1); + pango_matrix_scale (&m, 2, 4); + pango_matrix_rotate (&m, -90); + + x = 1; + y = 0; + + pango_matrix_transform_point (&m, &x, &y); + + g_assert_cmpfloat_with_epsilon (x, 1, 0.001); + g_assert_cmpfloat_with_epsilon (y, 5, 0.001); +} + +static void +test_matrix_transform_distance (void) +{ + PangoMatrix m = PANGO_MATRIX_INIT; + double x, y; + + pango_matrix_translate (&m, 1, 1); + pango_matrix_scale (&m, 2, 4); + pango_matrix_rotate (&m, -90); + + x = 1; + y = 0; + + pango_matrix_transform_distance (&m, &x, &y); + + g_assert_cmpfloat_with_epsilon (x, 0, 0.001); + g_assert_cmpfloat_with_epsilon (y, 4, 0.001); +} + +static void +test_matrix_transform_rect (void) +{ + PangoMatrix m = PANGO_MATRIX_INIT; + PangoRectangle rect; + + pango_matrix_rotate (&m, 45); + + rect.x = 0; + rect.y = 0; + rect.width = 1 * PANGO_SCALE; + rect.height = 1 * PANGO_SCALE; + + pango_matrix_transform_rectangle (&m, &rect); + + g_assert_cmpfloat_with_epsilon (rect.x, 0, 0.5); + g_assert_cmpfloat_with_epsilon (rect.y, - M_SQRT2 / 2 * PANGO_SCALE, 0.5); + g_assert_cmpfloat_with_epsilon (rect.width, M_SQRT2 * PANGO_SCALE, 0.5); + g_assert_cmpfloat_with_epsilon (rect.height, M_SQRT2 * PANGO_SCALE, 0.5); +} + +static void +test_matrix_transform_pixel_rect (void) +{ + PangoMatrix m = PANGO_MATRIX_INIT; + PangoRectangle rect; + + pango_matrix_rotate (&m, 45); + + rect.x = 0; + rect.y = 0; + rect.width = 1; + rect.height = 1; + + pango_matrix_transform_pixel_rectangle (&m, &rect); + + g_assert_cmpfloat_with_epsilon (rect.x, 0, 0.1); + g_assert_cmpfloat_with_epsilon (rect.y, -1, 0.1); + g_assert_cmpfloat_with_epsilon (rect.width, 2, 0.1); + g_assert_cmpfloat_with_epsilon (rect.height, 2, 0.1); +} + +int +main (int argc, char *argv[]) +{ + g_test_init (&argc, &argv, NULL); + + g_test_add_func ("/matrix/translate", test_matrix_translate); + g_test_add_func ("/matrix/rotate", test_matrix_rotate); + g_test_add_func ("/matrix/scale", test_matrix_scale); + g_test_add_func ("/matrix/concat", test_matrix_concat); + g_test_add_func ("/matrix/font-scale", test_matrix_font_scale); + g_test_add_func ("/matrix/transform-point", test_matrix_transform_point); + g_test_add_func ("/matrix/transform-distance", test_matrix_transform_distance); + g_test_add_func ("/matrix/transform-rect", test_matrix_transform_rect); + g_test_add_func ("/matrix/transform-pixel-rect", test_matrix_transform_pixel_rect); + + return g_test_run (); +} |