/*************************************************************************/ /* test_curve.h */ /*************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ /* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */ /* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */ /* */ /* Permission is hereby granted, free of charge, to any person obtaining */ /* a copy of this software and associated documentation files (the */ /* "Software"), to deal in the Software without restriction, including */ /* without limitation the rights to use, copy, modify, merge, publish, */ /* distribute, sublicense, and/or sell copies of the Software, and to */ /* permit persons to whom the Software is furnished to do so, subject to */ /* the following conditions: */ /* */ /* The above copyright notice and this permission notice shall be */ /* included in all copies or substantial portions of the Software. */ /* */ /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ /*************************************************************************/ #ifndef TEST_CURVE_H #define TEST_CURVE_H #include "scene/resources/curve.h" #include "tests/test_macros.h" namespace TestCurve { TEST_CASE("[Curve] Default curve") { const Ref curve = memnew(Curve); CHECK_MESSAGE( curve->get_point_count() == 0, "Default curve should contain the expected number of points."); CHECK_MESSAGE( Math::is_zero_approx(curve->interpolate(0)), "Default curve should return the expected value at offset 0.0."); CHECK_MESSAGE( Math::is_zero_approx(curve->interpolate(0.5)), "Default curve should return the expected value at offset 0.5."); CHECK_MESSAGE( Math::is_zero_approx(curve->interpolate(1)), "Default curve should return the expected value at offset 1.0."); } TEST_CASE("[Curve] Custom curve with free tangents") { Ref curve = memnew(Curve); // "Sawtooth" curve with an open ending towards the 1.0 offset. curve->add_point(Vector2(0, 0)); curve->add_point(Vector2(0.25, 1)); curve->add_point(Vector2(0.5, 0)); curve->add_point(Vector2(0.75, 1)); CHECK_MESSAGE( Math::is_zero_approx(curve->get_point_left_tangent(0)), "get_point_left_tangent() should return the expected value for point index 0."); CHECK_MESSAGE( Math::is_zero_approx(curve->get_point_right_tangent(0)), "get_point_right_tangent() should return the expected value for point index 0."); CHECK_MESSAGE( curve->get_point_left_mode(0) == Curve::TangentMode::TANGENT_FREE, "get_point_left_mode() should return the expected value for point index 0."); CHECK_MESSAGE( curve->get_point_right_mode(0) == Curve::TangentMode::TANGENT_FREE, "get_point_right_mode() should return the expected value for point index 0."); CHECK_MESSAGE( curve->get_point_count() == 4, "Custom free curve should contain the expected number of points."); CHECK_MESSAGE( Math::is_zero_approx(curve->interpolate(-0.1)), "Custom free curve should return the expected value at offset 0.1."); CHECK_MESSAGE( Math::is_equal_approx(curve->interpolate(0.1), (real_t)0.352), "Custom free curve should return the expected value at offset 0.1."); CHECK_MESSAGE( Math::is_equal_approx(curve->interpolate(0.4), (real_t)0.352), "Custom free curve should return the expected value at offset 0.1."); CHECK_MESSAGE( Math::is_equal_approx(curve->interpolate(0.7), (real_t)0.896), "Custom free curve should return the expected value at offset 0.1."); CHECK_MESSAGE( Math::is_equal_approx(curve->interpolate(1), 1), "Custom free curve should return the expected value at offset 0.1."); CHECK_MESSAGE( Math::is_equal_approx(curve->interpolate(2), 1), "Custom free curve should return the expected value at offset 0.1."); CHECK_MESSAGE( Math::is_zero_approx(curve->interpolate_baked(-0.1)), "Custom free curve should return the expected baked value at offset 0.1."); CHECK_MESSAGE( Math::is_equal_approx(curve->interpolate_baked(0.1), (real_t)0.352), "Custom free curve should return the expected baked value at offset 0.1."); CHECK_MESSAGE( Math::is_equal_approx(curve->interpolate_baked(0.4), (real_t)0.352), "Custom free curve should return the expected baked value at offset 0.1."); CHECK_MESSAGE( Math::is_equal_approx(curve->interpolate_baked(0.7), (real_t)0.896), "Custom free curve should return the expected baked value at offset 0.1."); CHECK_MESSAGE( Math::is_equal_approx(curve->interpolate_baked(1), 1), "Custom free curve should return the expected baked value at offset 0.1."); CHECK_MESSAGE( Math::is_equal_approx(curve->interpolate_baked(2), 1), "Custom free curve should return the expected baked value at offset 0.1."); curve->remove_point(1); CHECK_MESSAGE( Math::is_equal_approx(curve->interpolate(0.1), 0), "Custom free curve should return the expected value at offset 0.1 after removing point at index 1."); CHECK_MESSAGE( Math::is_equal_approx(curve->interpolate_baked(0.1), 0), "Custom free curve should return the expected baked value at offset 0.1 after removing point at index 1."); curve->clear_points(); CHECK_MESSAGE( Math::is_equal_approx(curve->interpolate(0.6), 0), "Custom free curve should return the expected value at offset 0.6 after clearing all points."); CHECK_MESSAGE( Math::is_equal_approx(curve->interpolate_baked(0.6), 0), "Custom free curve should return the expected baked value at offset 0.6 after clearing all points."); } TEST_CASE("[Curve] Custom curve with linear tangents") { Ref curve = memnew(Curve); // "Sawtooth" curve with an open ending towards the 1.0 offset. curve->add_point(Vector2(0, 0), 0, 0, Curve::TangentMode::TANGENT_LINEAR, Curve::TangentMode::TANGENT_LINEAR); curve->add_point(Vector2(0.25, 1), 0, 0, Curve::TangentMode::TANGENT_LINEAR, Curve::TangentMode::TANGENT_LINEAR); curve->add_point(Vector2(0.5, 0), 0, 0, Curve::TangentMode::TANGENT_LINEAR, Curve::TangentMode::TANGENT_LINEAR); curve->add_point(Vector2(0.75, 1), 0, 0, Curve::TangentMode::TANGENT_LINEAR, Curve::TangentMode::TANGENT_LINEAR); CHECK_MESSAGE( Math::is_equal_approx(curve->get_point_left_tangent(3), 4), "get_point_left_tangent() should return the expected value for point index 3."); CHECK_MESSAGE( Math::is_zero_approx(curve->get_point_right_tangent(3)), "get_point_right_tangent() should return the expected value for point index 3."); CHECK_MESSAGE( curve->get_point_left_mode(3) == Curve::TangentMode::TANGENT_LINEAR, "get_point_left_mode() should return the expected value for point index 3."); CHECK_MESSAGE( curve->get_point_right_mode(3) == Curve::TangentMode::TANGENT_LINEAR, "get_point_right_mode() should return the expected value for point index 3."); ERR_PRINT_OFF; CHECK_MESSAGE( Math::is_zero_approx(curve->get_point_right_tangent(300)), "get_point_right_tangent() should return the expected value for invalid point index 300."); CHECK_MESSAGE( curve->get_point_left_mode(-12345) == Curve::TangentMode::TANGENT_FREE, "get_point_left_mode() should return the expected value for invalid point index -12345."); ERR_PRINT_ON; CHECK_MESSAGE( curve->get_point_count() == 4, "Custom linear curve should contain the expected number of points."); CHECK_MESSAGE( Math::is_zero_approx(curve->interpolate(-0.1)), "Custom linear curve should return the expected value at offset -0.1."); CHECK_MESSAGE( Math::is_equal_approx(curve->interpolate(0.1), (real_t)0.4), "Custom linear curve should return the expected value at offset 0.1."); CHECK_MESSAGE( Math::is_equal_approx(curve->interpolate(0.4), (real_t)0.4), "Custom linear curve should return the expected value at offset 0.4."); CHECK_MESSAGE( Math::is_equal_approx(curve->interpolate(0.7), (real_t)0.8), "Custom linear curve should return the expected value at offset 0.7."); CHECK_MESSAGE( Math::is_equal_approx(curve->interpolate(1), 1), "Custom linear curve should return the expected value at offset 1.0."); CHECK_MESSAGE( Math::is_equal_approx(curve->interpolate(2), 1), "Custom linear curve should return the expected value at offset 2.0."); CHECK_MESSAGE( Math::is_zero_approx(curve->interpolate_baked(-0.1)), "Custom linear curve should return the expected baked value at offset -0.1."); CHECK_MESSAGE( Math::is_equal_approx(curve->interpolate_baked(0.1), (real_t)0.4), "Custom linear curve should return the expected baked value at offset 0.1."); CHECK_MESSAGE( Math::is_equal_approx(curve->interpolate_baked(0.4), (real_t)0.4), "Custom linear curve should return the expected baked value at offset 0.4."); CHECK_MESSAGE( Math::is_equal_approx(curve->interpolate_baked(0.7), (real_t)0.8), "Custom linear curve should return the expected baked value at offset 0.7."); CHECK_MESSAGE( Math::is_equal_approx(curve->interpolate_baked(1), 1), "Custom linear curve should return the expected baked value at offset 1.0."); CHECK_MESSAGE( Math::is_equal_approx(curve->interpolate_baked(2), 1), "Custom linear curve should return the expected baked value at offset 2.0."); ERR_PRINT_OFF; curve->remove_point(10); ERR_PRINT_ON; CHECK_MESSAGE( Math::is_equal_approx(curve->interpolate(0.7), (real_t)0.8), "Custom free curve should return the expected value at offset 0.7 after removing point at invalid index 10."); CHECK_MESSAGE( Math::is_equal_approx(curve->interpolate_baked(0.7), (real_t)0.8), "Custom free curve should return the expected baked value at offset 0.7 after removing point at invalid index 10."); } TEST_CASE("[Curve2D] Linear sampling should return exact value") { Ref curve = memnew(Curve2D); int len = 2048; curve->add_point(Vector2(0, 0)); curve->add_point(Vector2((float)len, 0)); float baked_length = curve->get_baked_length(); CHECK((float)len == baked_length); for (int i = 0; i < len; i++) { float expected = (float)i; Vector2 pos = curve->interpolate_baked(expected); CHECK_MESSAGE(pos.x == expected, "interpolate_baked should return exact value"); } } TEST_CASE("[Curve3D] Linear sampling should return exact value") { Ref curve = memnew(Curve3D); int len = 2048; curve->add_point(Vector3(0, 0, 0)); curve->add_point(Vector3((float)len, 0, 0)); float baked_length = curve->get_baked_length(); CHECK((float)len == baked_length); for (int i = 0; i < len; i++) { float expected = (float)i; Vector3 pos = curve->interpolate_baked(expected); CHECK_MESSAGE(pos.x == expected, "interpolate_baked should return exact value"); } } } // namespace TestCurve #endif // TEST_CURVE_H