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- /*
- ---------------------------------------------------------------------------
- Open Asset Import Library (assimp)
- ---------------------------------------------------------------------------
- Copyright (c) 2006-2025, assimp team
- All rights reserved.
- Redistribution and use of this software in source and binary forms,
- with or without modification, are permitted provided that the following
- conditions are met:
- * Redistributions of source code must retain the above
- copyright notice, this list of conditions and the
- following disclaimer.
- * Redistributions in binary form must reproduce the above
- copyright notice, this list of conditions and the
- following disclaimer in the documentation and/or other
- materials provided with the distribution.
- * Neither the name of the assimp team, nor the names of its
- contributors may be used to endorse or promote products
- derived from this software without specific prior
- written permission of the assimp team.
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- ---------------------------------------------------------------------------
- */
- #include "UnitTestPCH.h"
- #include <iostream>
- using namespace ::Assimp;
- class utMatrix3x3Test : public ::testing::Test {
- // empty
- };
- TEST_F(utMatrix3x3Test, FromToMatrixTest) {
- aiVector3D res;
- aiMatrix3x3 trafo;
- const double PRECISION = 0.000001;
- // axes test
- aiVector3D axes[] = { aiVector3D(1, 0, 0), aiVector3D(0, 1, 0), aiVector3D(0, 0, 1) };
- for (int i = 0; i < 3; ++i) {
- for (int j = 0; j < 3; ++j) {
- aiMatrix3x3::FromToMatrix(axes[i], axes[j], trafo);
- res = trafo * axes[i];
- ASSERT_NEAR(axes[j].x, res.x, PRECISION);
- ASSERT_NEAR(axes[j].y, res.y, PRECISION);
- ASSERT_NEAR(axes[j].z, res.z, PRECISION);
- }
- }
- // random test
- const int NUM_SAMPLES = 10000;
- aiVector3D from, to;
- auto random_ratio = []() -> float {
- return static_cast<float>(rand()) / static_cast<float>(RAND_MAX);
- };
- for (int i = 0; i < NUM_SAMPLES; ++i) {
- from = aiVector3D(
- 1.f * random_ratio(),
- 1.f * random_ratio(),
- 1.f * random_ratio())
- .Normalize();
- to = aiVector3D(
- 1.f * random_ratio(),
- 1.f * random_ratio(),
- 1.f * random_ratio())
- .Normalize();
- aiMatrix3x3::FromToMatrix(from, to, trafo);
- res = trafo * from;
- ASSERT_NEAR(to.x, res.x, PRECISION);
- ASSERT_NEAR(to.y, res.y, PRECISION);
- ASSERT_NEAR(to.z, res.z, PRECISION);
- }
- }
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