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ae18928748
"sampling" is a more accurate term than "interpolating" for what's happening when using that function.
255 lines
11 KiB
C++
255 lines
11 KiB
C++
/*************************************************************************/
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/* test_curve.h */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#ifndef TEST_CURVE_H
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#define TEST_CURVE_H
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#include "scene/resources/curve.h"
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#include "tests/test_macros.h"
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namespace TestCurve {
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TEST_CASE("[Curve] Default curve") {
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const Ref<Curve> curve = memnew(Curve);
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CHECK_MESSAGE(
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curve->get_point_count() == 0,
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"Default curve should contain the expected number of points.");
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CHECK_MESSAGE(
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Math::is_zero_approx(curve->sample(0)),
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"Default curve should return the expected value at offset 0.0.");
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CHECK_MESSAGE(
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Math::is_zero_approx(curve->sample(0.5)),
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"Default curve should return the expected value at offset 0.5.");
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CHECK_MESSAGE(
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Math::is_zero_approx(curve->sample(1)),
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"Default curve should return the expected value at offset 1.0.");
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}
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TEST_CASE("[Curve] Custom curve with free tangents") {
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Ref<Curve> curve = memnew(Curve);
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// "Sawtooth" curve with an open ending towards the 1.0 offset.
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curve->add_point(Vector2(0, 0));
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curve->add_point(Vector2(0.25, 1));
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curve->add_point(Vector2(0.5, 0));
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curve->add_point(Vector2(0.75, 1));
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CHECK_MESSAGE(
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Math::is_zero_approx(curve->get_point_left_tangent(0)),
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"get_point_left_tangent() should return the expected value for point index 0.");
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CHECK_MESSAGE(
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Math::is_zero_approx(curve->get_point_right_tangent(0)),
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"get_point_right_tangent() should return the expected value for point index 0.");
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CHECK_MESSAGE(
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curve->get_point_left_mode(0) == Curve::TangentMode::TANGENT_FREE,
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"get_point_left_mode() should return the expected value for point index 0.");
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CHECK_MESSAGE(
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curve->get_point_right_mode(0) == Curve::TangentMode::TANGENT_FREE,
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"get_point_right_mode() should return the expected value for point index 0.");
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CHECK_MESSAGE(
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curve->get_point_count() == 4,
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"Custom free curve should contain the expected number of points.");
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CHECK_MESSAGE(
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Math::is_zero_approx(curve->sample(-0.1)),
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"Custom free curve should return the expected value at offset 0.1.");
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CHECK_MESSAGE(
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Math::is_equal_approx(curve->sample(0.1), (real_t)0.352),
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"Custom free curve should return the expected value at offset 0.1.");
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CHECK_MESSAGE(
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Math::is_equal_approx(curve->sample(0.4), (real_t)0.352),
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"Custom free curve should return the expected value at offset 0.1.");
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CHECK_MESSAGE(
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Math::is_equal_approx(curve->sample(0.7), (real_t)0.896),
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"Custom free curve should return the expected value at offset 0.1.");
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CHECK_MESSAGE(
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Math::is_equal_approx(curve->sample(1), 1),
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"Custom free curve should return the expected value at offset 0.1.");
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CHECK_MESSAGE(
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Math::is_equal_approx(curve->sample(2), 1),
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"Custom free curve should return the expected value at offset 0.1.");
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CHECK_MESSAGE(
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Math::is_zero_approx(curve->sample_baked(-0.1)),
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"Custom free curve should return the expected baked value at offset 0.1.");
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CHECK_MESSAGE(
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Math::is_equal_approx(curve->sample_baked(0.1), (real_t)0.352),
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"Custom free curve should return the expected baked value at offset 0.1.");
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CHECK_MESSAGE(
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Math::is_equal_approx(curve->sample_baked(0.4), (real_t)0.352),
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"Custom free curve should return the expected baked value at offset 0.1.");
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CHECK_MESSAGE(
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Math::is_equal_approx(curve->sample_baked(0.7), (real_t)0.896),
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"Custom free curve should return the expected baked value at offset 0.1.");
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CHECK_MESSAGE(
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Math::is_equal_approx(curve->sample_baked(1), 1),
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"Custom free curve should return the expected baked value at offset 0.1.");
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CHECK_MESSAGE(
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Math::is_equal_approx(curve->sample_baked(2), 1),
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"Custom free curve should return the expected baked value at offset 0.1.");
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curve->remove_point(1);
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CHECK_MESSAGE(
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Math::is_equal_approx(curve->sample(0.1), 0),
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"Custom free curve should return the expected value at offset 0.1 after removing point at index 1.");
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CHECK_MESSAGE(
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Math::is_equal_approx(curve->sample_baked(0.1), 0),
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"Custom free curve should return the expected baked value at offset 0.1 after removing point at index 1.");
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curve->clear_points();
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CHECK_MESSAGE(
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Math::is_equal_approx(curve->sample(0.6), 0),
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"Custom free curve should return the expected value at offset 0.6 after clearing all points.");
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CHECK_MESSAGE(
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Math::is_equal_approx(curve->sample_baked(0.6), 0),
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"Custom free curve should return the expected baked value at offset 0.6 after clearing all points.");
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}
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TEST_CASE("[Curve] Custom curve with linear tangents") {
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Ref<Curve> curve = memnew(Curve);
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// "Sawtooth" curve with an open ending towards the 1.0 offset.
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curve->add_point(Vector2(0, 0), 0, 0, Curve::TangentMode::TANGENT_LINEAR, Curve::TangentMode::TANGENT_LINEAR);
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curve->add_point(Vector2(0.25, 1), 0, 0, Curve::TangentMode::TANGENT_LINEAR, Curve::TangentMode::TANGENT_LINEAR);
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curve->add_point(Vector2(0.5, 0), 0, 0, Curve::TangentMode::TANGENT_LINEAR, Curve::TangentMode::TANGENT_LINEAR);
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curve->add_point(Vector2(0.75, 1), 0, 0, Curve::TangentMode::TANGENT_LINEAR, Curve::TangentMode::TANGENT_LINEAR);
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CHECK_MESSAGE(
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Math::is_equal_approx(curve->get_point_left_tangent(3), 4),
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"get_point_left_tangent() should return the expected value for point index 3.");
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CHECK_MESSAGE(
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Math::is_zero_approx(curve->get_point_right_tangent(3)),
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"get_point_right_tangent() should return the expected value for point index 3.");
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CHECK_MESSAGE(
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curve->get_point_left_mode(3) == Curve::TangentMode::TANGENT_LINEAR,
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"get_point_left_mode() should return the expected value for point index 3.");
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CHECK_MESSAGE(
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curve->get_point_right_mode(3) == Curve::TangentMode::TANGENT_LINEAR,
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"get_point_right_mode() should return the expected value for point index 3.");
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ERR_PRINT_OFF;
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CHECK_MESSAGE(
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Math::is_zero_approx(curve->get_point_right_tangent(300)),
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"get_point_right_tangent() should return the expected value for invalid point index 300.");
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CHECK_MESSAGE(
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curve->get_point_left_mode(-12345) == Curve::TangentMode::TANGENT_FREE,
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"get_point_left_mode() should return the expected value for invalid point index -12345.");
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ERR_PRINT_ON;
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CHECK_MESSAGE(
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curve->get_point_count() == 4,
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"Custom linear curve should contain the expected number of points.");
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CHECK_MESSAGE(
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Math::is_zero_approx(curve->sample(-0.1)),
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"Custom linear curve should return the expected value at offset -0.1.");
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CHECK_MESSAGE(
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Math::is_equal_approx(curve->sample(0.1), (real_t)0.4),
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"Custom linear curve should return the expected value at offset 0.1.");
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CHECK_MESSAGE(
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Math::is_equal_approx(curve->sample(0.4), (real_t)0.4),
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"Custom linear curve should return the expected value at offset 0.4.");
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CHECK_MESSAGE(
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Math::is_equal_approx(curve->sample(0.7), (real_t)0.8),
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"Custom linear curve should return the expected value at offset 0.7.");
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CHECK_MESSAGE(
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Math::is_equal_approx(curve->sample(1), 1),
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"Custom linear curve should return the expected value at offset 1.0.");
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CHECK_MESSAGE(
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Math::is_equal_approx(curve->sample(2), 1),
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"Custom linear curve should return the expected value at offset 2.0.");
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CHECK_MESSAGE(
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Math::is_zero_approx(curve->sample_baked(-0.1)),
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"Custom linear curve should return the expected baked value at offset -0.1.");
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CHECK_MESSAGE(
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Math::is_equal_approx(curve->sample_baked(0.1), (real_t)0.4),
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"Custom linear curve should return the expected baked value at offset 0.1.");
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CHECK_MESSAGE(
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Math::is_equal_approx(curve->sample_baked(0.4), (real_t)0.4),
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"Custom linear curve should return the expected baked value at offset 0.4.");
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CHECK_MESSAGE(
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Math::is_equal_approx(curve->sample_baked(0.7), (real_t)0.8),
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"Custom linear curve should return the expected baked value at offset 0.7.");
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CHECK_MESSAGE(
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Math::is_equal_approx(curve->sample_baked(1), 1),
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"Custom linear curve should return the expected baked value at offset 1.0.");
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CHECK_MESSAGE(
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Math::is_equal_approx(curve->sample_baked(2), 1),
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"Custom linear curve should return the expected baked value at offset 2.0.");
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ERR_PRINT_OFF;
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curve->remove_point(10);
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ERR_PRINT_ON;
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CHECK_MESSAGE(
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Math::is_equal_approx(curve->sample(0.7), (real_t)0.8),
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"Custom free curve should return the expected value at offset 0.7 after removing point at invalid index 10.");
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CHECK_MESSAGE(
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Math::is_equal_approx(curve->sample_baked(0.7), (real_t)0.8),
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"Custom free curve should return the expected baked value at offset 0.7 after removing point at invalid index 10.");
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}
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TEST_CASE("[Curve2D] Linear sampling should return exact value") {
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Ref<Curve2D> curve = memnew(Curve2D);
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real_t len = 2048.0;
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curve->add_point(Vector2(0, 0));
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curve->add_point(Vector2(len, 0));
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real_t baked_length = curve->get_baked_length();
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CHECK(len == baked_length);
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for (int i = 0; i < len; i++) {
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Vector2 pos = curve->sample_baked(i);
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CHECK_MESSAGE(pos.x == i, "sample_baked should return exact value");
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}
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}
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TEST_CASE("[Curve3D] Linear sampling should return exact value") {
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Ref<Curve3D> curve = memnew(Curve3D);
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real_t len = 2048.0;
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curve->add_point(Vector3(0, 0, 0));
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curve->add_point(Vector3(len, 0, 0));
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real_t baked_length = curve->get_baked_length();
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CHECK(len == baked_length);
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for (int i = 0; i < len; i++) {
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Vector3 pos = curve->sample_baked(i);
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CHECK_MESSAGE(pos.x == i, "sample_baked should return exact value");
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}
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}
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} // namespace TestCurve
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#endif // TEST_CURVE_H
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