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+/*
+---------------------------------------------------------------------------
+Open Asset Import Library (assimp)
+---------------------------------------------------------------------------
+
+Copyright (c) 2006-2022, 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.
+---------------------------------------------------------------------------
+*/
+
+#ifndef ASSIMP_MATH_TEST_H
+#define ASSIMP_MATH_TEST_H
+
+#include "UnitTestPCH.h"
+#include <assimp/types.h>
+#include "RandomNumberGeneration.h"
+
+namespace Assimp {
+
+/** Custom test class providing several math related utilities. */
+class AssimpMathTest : public ::testing::Test {
+public:
+    /** Return a random non-null 2D vector. */
+    inline static aiVector2D random_vec2() {
+        return aiVector2D(RandNonZero.next(), RandNonZero.next());
+    }
+
+    /** Return a random non-null 3D vector. */
+    inline static aiVector3D random_vec3() {
+        return aiVector3D(RandNonZero.next(), RandNonZero.next(),RandNonZero.next());
+    }
+
+    /** Return a random unit 3D vector. */
+    inline static aiVector3D random_unit_vec3() {
+        return random_vec3().NormalizeSafe();
+    }
+
+    /** Return a quaternion with random orientation and
+      * rotation angle around axis. */
+    inline static aiQuaternion random_quat() {
+        return aiQuaternion(random_unit_vec3(), RandPI.next());
+    }
+
+    /** Return a random non-null 3x3 matrix. */
+    inline static aiMatrix3x3 random_mat3() {
+        return aiMatrix3x3(
+            RandNonZero.next(), RandNonZero.next(),RandNonZero.next(),
+            RandNonZero.next(), RandNonZero.next(),RandNonZero.next(),
+            RandNonZero.next(), RandNonZero.next(),RandNonZero.next());
+    }
+
+    /** Return a random non-null 4x4 matrix. */
+    inline static aiMatrix4x4 random_mat4() {
+        return aiMatrix4x4(
+            RandNonZero.next(), RandNonZero.next(),RandNonZero.next(), RandNonZero.next(),
+            RandNonZero.next(), RandNonZero.next(),RandNonZero.next(), RandNonZero.next(),
+            RandNonZero.next(), RandNonZero.next(),RandNonZero.next(), RandNonZero.next(),
+            RandNonZero.next(), RandNonZero.next(),RandNonZero.next(), RandNonZero.next());
+    }
+
+    /** Epsilon value to use in tests. */
+    static const float Epsilon;
+
+    /** Random number generators. */
+    static RandomUniformFloatGenerator RandNonZero, RandPI;
+};
+
+}
+
+#endif // ASSIMP_MATH_TEST_H