pandemonium_engine/modules/network_synchronizer/tests/test_interpolator.h

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/*************************************************************************/
/* test_interpolator.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). */
/* */
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/* */
/* The above copyright notice and this permission notice shall be */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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#ifndef TEST_INTERPOLATOR_H
#define TEST_INTERPOLATOR_H
#include "modules/network_synchronizer/interpolator.h"
#include "tests/test_macros.h"
namespace TestInterpolator {
template <class T>
T generate_value(real_t value) {
if constexpr (std::is_same_v<T, Vector2> || std::is_same_v<T, Vector2i>) {
return T(value, value);
} else if constexpr (std::is_same_v<T, Vector3> || std::is_same_v<T, Vector3i>) {
return T(value, value, value);
} else {
return static_cast<T>(value);
}
}
// TODO: Add other types
TEST_CASE_TEMPLATE("[Modules][Interpolator] Interpolation", T, int, real_t, Vector2, Vector2i, Vector3) {
LocalVector<real_t> fractions;
fractions.reserve(7);
fractions.push_back(0.0);
fractions.push_back(1.0);
fractions.push_back(0.5);
fractions.push_back(0.001);
fractions.push_back(0.999);
fractions.push_back(0.25);
fractions.push_back(0.75);
Map<real_t, real_t> values;
values.insert(0.0, 1.0);
values.insert(-1.0, 1.0);
values.insert(0.0, -1.0);
values.insert(10, 15);
Interpolator interpolator;
for (const Map<real_t, real_t>::Element *E = values.front(); E; E = E->next()) {
for (uint32_t j = 0; j < fractions.size(); ++j) {
// Skip custom interpolator for now
for (int k = Interpolator::FALLBACK_INTERPOLATE; k < Interpolator::FALLBACK_CUSTOM_INTERPOLATOR; ++k) {
const T first_value = generate_value<T>(E->key());
const T second_value = generate_value<T>(E->value());
interpolator.reset();
const int variable_id = interpolator.register_variable(T(), static_cast<Interpolator::Fallback>(k));
interpolator.terminate_init();
interpolator.begin_write(0);
interpolator.epoch_insert(variable_id, first_value);
interpolator.end_write();
interpolator.begin_write(1);
interpolator.epoch_insert(variable_id, second_value);
interpolator.end_write();
CAPTURE(k);
CAPTURE(fractions[j]);
CAPTURE(first_value);
CAPTURE(second_value);
const T result = interpolator.pop_epoch(0, fractions[j])[0];
switch (k) {
case Interpolator::FALLBACK_INTERPOLATE: {
CHECK(result == Interpolator::interpolate(first_value, second_value, fractions[j]).operator T());
} break;
case Interpolator::FALLBACK_DEFAULT: {
if (fractions[j] == 0.0) {
CHECK(result == first_value);
} else if (fractions[j] == 1.0) {
CHECK(result == second_value);
} else {
CHECK(result == T());
}
} break;
case Interpolator::FALLBACK_OLD_OR_NEAREST: {
if (fractions[j] == 0.0) {
CHECK(result == first_value);
} else if (fractions[j] == 1.0) {
CHECK(result == second_value);
} else {
CHECK(result == first_value);
}
} break;
case Interpolator::FALLBACK_NEW_OR_NEAREST: {
if (fractions[j] == 0.0) {
CHECK(result == first_value);
} else if (fractions[j] == 1.0) {
CHECK(result == second_value);
} else {
CHECK(result == second_value);
}
} break;
}
}
}
}
}
} // namespace TestInterpolator
#endif // TEST_INTERPOLATOR_H