pandemonium_engine/main/tests/test_transform.cpp

271 lines
7.6 KiB
C++
Raw Normal View History

/*************************************************************************/
/* test_transform.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 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. */
/*************************************************************************/
#include "test_transform.h"
#include "core/math/random_number_generator.h"
#include "core/math/transform.h"
#include "core/math/vector3.h"
#include "core/os/os.h"
#include "core/ustring.h"
// #define GODOT_TEST_TRANSFORM_NON_UNIFORM_SCALE_TESTS_ENABLED
namespace TestTransform {
bool test_plane() {
bool pass = true;
// test non-uniform scaling, forward and inverse
Transform tr;
tr.scale(Vector3(1, 2, 3));
Plane p(Vector3(1, 1, 1), Vector3(1, 1, 1).normalized());
Plane p2 = tr.xform(p);
Plane p3 = tr.xform_inv(p2);
if (!p3.normal.is_equal_approx(p.normal)) {
OS::get_singleton()->print("Fail due to Transform::xform(Plane)\n");
pass = false;
}
return pass;
}
bool test_aabb_regular() {
bool pass = true;
Transform tr;
tr.basis = Basis(Vector3(Math_PI, 0, 0));
tr.origin = Vector3(1, 2, 3);
AABB bb(Vector3(1, 1, 1), Vector3(2, 3, 4));
// Test forward xform.
AABB bb2 = tr.xform(bb);
AABB bb3 = tr.xform_inv(bb2);
if (!bb3.position.is_equal_approx(bb.position)) {
OS::get_singleton()->print("Fail due to Transform::xform_inv(AABB) position\n");
pass = false;
}
if (!bb3.size.is_equal_approx(bb.size)) {
OS::get_singleton()->print("Fail due to Transform::xform_inv(AABB) size\n");
pass = false;
}
if (!pass) {
String string = String("bb2 : ") + String(Variant(bb2));
OS::get_singleton()->print("\t%ls\n", string.c_str());
string = String("bb3 : ") + String(Variant(bb3));
OS::get_singleton()->print("\t%ls\n", string.c_str());
}
return pass;
}
bool test_aabb_non_uniform_scale() {
bool pass = true;
Transform tr;
tr.scale(Vector3(1, 2, 3));
AABB bb(Vector3(1, 1, 1), Vector3(2, 3, 4));
// Test forward xform.
AABB bb2 = tr.xform(bb);
if (!bb2.position.is_equal_approx(Vector3(1, 2, 3))) {
OS::get_singleton()->print("Fail with non-uniform scale due to Transform::xform(AABB) position\n");
pass = false;
}
if (!bb2.size.is_equal_approx(Vector3(2, 6, 12))) {
OS::get_singleton()->print("Fail with non-uniform scale due to Transform::xform(AABB) size\n");
pass = false;
}
// Now test inverse.
// This will fail if using the transpose and not the affine_inverse.
bb2.position = Vector3(1, 2, 3);
bb2.size = Vector3(2, 6, 12);
AABB bb3 = tr.xform_inv(bb2);
if (!bb3.position.is_equal_approx(bb.position)) {
OS::get_singleton()->print("Fail with non-uniform scale due to Transform::xform_inv(AABB) position\n");
pass = false;
}
if (!bb3.size.is_equal_approx(bb.size)) {
OS::get_singleton()->print("Fail with non-uniform scale due to Transform::xform_inv(AABB) size\n");
pass = false;
}
if (!pass) {
String string = String("bb2 : ") + String(Variant(bb2));
OS::get_singleton()->print("\t%ls\n", string.c_str());
string = String("bb3 : ") + String(Variant(bb3));
OS::get_singleton()->print("\t%ls\n", string.c_str());
}
return pass;
}
bool test_aabb() {
bool pass = true;
if (!test_aabb_regular()) {
pass = false;
}
#ifdef GODOT_TEST_TRANSFORM_NON_UNIFORM_SCALE_TESTS_ENABLED
if (!test_aabb_non_uniform_scale()) {
pass = false;
}
#endif
return pass;
}
bool test_vector3_regular() {
bool pass = true;
Transform tr;
RandomNumberGenerator rng;
const real_t range = 1800.0;
const real_t range_rot = Math_PI;
bool passed_multi = true;
for (int n = 0; n < 1000; n++) {
Vector3 pt_test = Vector3(rng.randf_range(-range, range), rng.randf_range(-range, range), rng.randf_range(-range, range));
tr.origin = Vector3(rng.randf_range(-range, range), rng.randf_range(-range, range), rng.randf_range(-range, range));
tr.basis = Basis(Vector3(rng.randf_range(-range_rot, range_rot), rng.randf_range(-range_rot, range_rot), rng.randf_range(-range_rot, range_rot)));
Vector3 pt = tr.xform(pt_test);
pt = tr.xform_inv(pt);
if (!pt.is_equal_approx(pt_test, 0.1)) {
passed_multi = false;
}
}
if (!passed_multi) {
OS::get_singleton()->print("Failed multitest due to Transform::xform and xform_inv(Vector3)\n");
pass = false;
}
return pass;
}
bool test_vector3_non_uniform_scale() {
bool pass = true;
// Regular scale.
Transform tr;
tr.scale(Vector3(3, 3, 3));
Vector3 pt(1, 1, 1);
Vector3 res = tr.xform(pt);
if (!res.is_equal_approx(Vector3(3, 3, 3))) {
OS::get_singleton()->print("Fail with scale due to Transform::xform(Vector3)\n");
pass = false;
}
res = tr.xform_inv(res);
if (!res.is_equal_approx(pt)) {
OS::get_singleton()->print("Fail with scale due to Transform::xform_inv(Vector3)\n");
pass = false;
}
// Non uniform scale.
tr.scale(Vector3(1, 2, 3));
res = tr.xform(pt);
if (!res.is_equal_approx(Vector3(1, 2, 3))) {
OS::get_singleton()->print("Fail with non-uniform scale due to Transform::xform(Vector3)\n");
pass = false;
}
pt = Vector3(1, 2, 3);
res = tr.xform_inv(pt);
if (!res.is_equal_approx(Vector3(1, 1, 1))) {
OS::get_singleton()->print("Fail with non-uniform scale due to Transform::xform_inv(Vector3)\n");
pass = false;
}
return pass;
}
bool test_vector3() {
bool pass = true;
if (!test_vector3_regular()) {
pass = false;
}
#ifdef GODOT_TEST_TRANSFORM_NON_UNIFORM_SCALE_TESTS_ENABLED
if (!test_vector3_non_uniform_scale()) {
pass = false;
}
#endif
return pass;
}
MainLoop *test() {
OS::get_singleton()->print("Start Transform checks.\n");
bool success = true;
if (!test_vector3()) {
success = false;
}
if (!test_plane()) {
success = false;
}
if (!test_aabb()) {
success = false;
}
if (success) {
OS::get_singleton()->print("Transform checks passed.\n");
} else {
OS::get_singleton()->print("Transform checks FAILED.\n");
}
return nullptr;
}
} // namespace TestTransform