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virtualx-engine/tests/test_curve.h

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/*************************************************************************/
/* 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 "thirdparty/doctest/doctest.h"
namespace TestCurve {
TEST_CASE("[Curve] Default curve") {
const Ref<Curve> 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> 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_equal_approx(curve->interpolate(-0.1), 0),
"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_equal_approx(curve->interpolate_baked(-0.1), 0),
"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> 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_equal_approx(curve->interpolate(-0.1), 0),
"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_equal_approx(curve->interpolate_baked(-0.1), 0),
"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.");
}
} // namespace TestCurve
#endif // TEST_CURVE_H
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