252 lines
9.0 KiB
C++
252 lines
9.0 KiB
C++
/********************************************************************************
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* ReactPhysics3D physics library, http://code.google.com/p/reactphysics3d/ *
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* Copyright (c) 2010-2013 Daniel Chappuis *
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*********************************************************************************
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* *
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* This software is provided 'as-is', without any express or implied warranty. *
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* In no event will the authors be held liable for any damages arising from the *
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* use of this software. *
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* *
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* Permission is granted to anyone to use this software for any purpose, *
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* including commercial applications, and to alter it and redistribute it *
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* freely, subject to the following restrictions: *
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* *
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* 1. The origin of this software must not be misrepresented; you must not claim *
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* that you wrote the original software. If you use this software in a *
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* product, an acknowledgment in the product documentation would be *
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* appreciated but is not required. *
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* *
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* 2. Altered source versions must be plainly marked as such, and must not be *
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* misrepresented as being the original software. *
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* *
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* 3. This notice may not be removed or altered from any source distribution. *
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* *
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********************************************************************************/
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#ifndef TEST_MATRIX2X2_H
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#define TEST_MATRIX2X2_H
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// Libraries
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#include "../../Test.h"
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#include "../../../src/mathematics/Matrix2x2.h"
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/// Reactphysics3D namespace
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namespace reactphysics3d {
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// Class TestMatrix2x2
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/**
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* Unit test for the Matrix2x2 class
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*/
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class TestMatrix2x2 : public Test {
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private :
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// ---------- Atributes ---------- //
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/// Identity transform
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Matrix2x2 mIdentity;
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/// First example matrix
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Matrix2x2 mMatrix1;
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public :
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// ---------- Methods ---------- //
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/// Constructor
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TestMatrix2x2() : mIdentity(Matrix2x2::identity()),
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mMatrix1(2, 24, -4, 5) {
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}
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/// Run the tests
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void run() {
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testConstructors();
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testGetSet();
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testIdentity();
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testZero();
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testOthersMethods();
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testOperators();
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}
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/// Test the constructors
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void testConstructors() {
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Matrix2x2 test1(5.0);
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Matrix2x2 test2(2, 3, 4, 5);
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Matrix2x2 test3(mMatrix1);
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test(test1[0][0] == 5);
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test(test1[0][1] == 5);
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test(test1[1][0] == 5);
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test(test1[1][1] == 5);
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test(test2[0][0] == 2);
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test(test2[0][1] == 3);
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test(test2[1][0] == 4);
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test(test2[1][1] == 5);
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test(test3 == mMatrix1);
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}
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/// Test the getter and setter methods
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void testGetSet() {
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// Test method to set all the values
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Matrix2x2 test2;
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test2.setAllValues(2, 24, -4, 5);
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test(test2 == mMatrix1);
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// Test method to set to zero
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test2.setToZero();
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test(test2 == Matrix2x2(0, 0, 0, 0));
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// Test method that returns a column
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Vector2 column1 = mMatrix1.getColumn(0);
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Vector2 column2 = mMatrix1.getColumn(1);
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test(column1 == Vector2(2, -4));
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test(column2 == Vector2(24, 5));
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// Test method that returns a row
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Vector2 row1 = mMatrix1.getRow(0);
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Vector2 row2 = mMatrix1.getRow(1);
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test(row1 == Vector2(2, 24));
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test(row2 == Vector2(-4, 5));
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}
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/// Test the identity methods
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void testIdentity() {
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Matrix2x2 identity = Matrix2x2::identity();
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Matrix2x2 test1;
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test1.setToIdentity();
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test(identity[0][0] == 1);
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test(identity[0][1] == 0);
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test(identity[1][0] == 0);
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test(identity[1][1] == 1);
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test(test1 == Matrix2x2::identity());
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}
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/// Test the zero method
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void testZero() {
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Matrix2x2 zero = Matrix2x2::zero();
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test(zero[0][0] == 0);
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test(zero[0][1] == 0);
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test(zero[1][0] == 0);
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test(zero[1][1] == 0);
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}
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/// Test others methods
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void testOthersMethods() {
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// Test transpose
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Matrix2x2 transpose = mMatrix1.getTranspose();
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test(transpose == Matrix2x2(2, -4, 24, 5));
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// Test trace
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test(mMatrix1.getTrace() ==7);
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test(Matrix2x2::identity().getTrace() == 2);
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// Test determinant
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Matrix2x2 matrix(-24, 64, 253, -35);
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test(mMatrix1.getDeterminant() == 106);
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test(matrix.getDeterminant() == -15352);
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test(mIdentity.getDeterminant() == 1);
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// Test inverse
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Matrix2x2 matrix2(1, 2, 3, 4);
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Matrix2x2 inverseMatrix = matrix2.getInverse();
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test(approxEqual(inverseMatrix[0][0], decimal(-2), decimal(10e-6)));
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test(approxEqual(inverseMatrix[0][1], decimal(1), decimal(10e-6)));
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test(approxEqual(inverseMatrix[1][0], decimal(1.5), decimal(10e-6)));
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test(approxEqual(inverseMatrix[1][1], decimal(-0.5), decimal(10e-6)));
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Matrix2x2 inverseMatrix1 = mMatrix1.getInverse();
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test(approxEqual(inverseMatrix1[0][0], decimal(0.047169811), decimal(10e-6)));
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test(approxEqual(inverseMatrix1[0][1], decimal(-0.226415094), decimal(10e-6)));
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test(approxEqual(inverseMatrix1[1][0], decimal(0.037735849), decimal(10e-6)));
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test(approxEqual(inverseMatrix1[1][1], decimal(0.018867925), decimal(10e-6)));
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// Test absolute matrix
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Matrix2x2 matrix3(-2, -3, -4, -5);
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test(matrix.getAbsoluteMatrix() == Matrix2x2(24, 64, 253, 35));
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Matrix2x2 absoluteMatrix = matrix3.getAbsoluteMatrix();
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test(absoluteMatrix == Matrix2x2(2, 3, 4, 5));
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}
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/// Test the operators
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void testOperators() {
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// Test addition
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Matrix2x2 matrix1(2, 3, 4, 5);
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Matrix2x2 matrix2(-2, 3, -5, 10);
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Matrix2x2 addition1 = matrix1 + matrix2;
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Matrix2x2 addition2(matrix1);
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addition2 += matrix2;
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test(addition1 == Matrix2x2(0, 6, -1, 15));
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test(addition2 == Matrix2x2(0, 6, -1, 15));
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// Test substraction
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Matrix2x2 substraction1 = matrix1 - matrix2;
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Matrix2x2 substraction2(matrix1);
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substraction2 -= matrix2;
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test(substraction1 == Matrix2x2(4, 0, 9, -5));
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test(substraction2 == Matrix2x2(4, 0, 9, -5));
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// Test negative operator
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Matrix2x2 negative = -matrix1;
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test(negative == Matrix2x2(-2, -3, -4, -5));
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// Test multiplication with a number
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Matrix2x2 multiplication1 = 3 * matrix1;
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Matrix2x2 multiplication2 = matrix1 * 3;
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Matrix2x2 multiplication3(matrix1);
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multiplication3 *= 3;
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test(multiplication1 == Matrix2x2(6, 9, 12, 15));
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test(multiplication2 == Matrix2x2(6, 9, 12, 15));
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test(multiplication3 == Matrix2x2(6, 9, 12, 15));
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// Test multiplication with a matrix
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Matrix2x2 multiplication4 = matrix1 * matrix2;
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Matrix2x2 multiplication5 = matrix2 * matrix1;
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test(multiplication4 == Matrix2x2(-19, 36, -33, 62));
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test(multiplication5 == Matrix2x2(8, 9, 30, 35));
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// Test multiplication with a vector
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Vector2 vector1(3, -32);
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Vector2 vector2(-31, -422);
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Vector2 test1 = matrix1 * vector1;
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Vector2 test2 = matrix2 * vector2;
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test(test1 == Vector2(-90, -148));
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test(test2 == Vector2(-1204, -4065));
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// Test equality operators
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test(Matrix2x2(34, 38, 43, 64) ==
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Matrix2x2(34, 38, 43, 64));
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test(Matrix2x2(34, 64, 43, 7) !=
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Matrix2x2(34, 38, 43, 64));
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// Test operator to read a value
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test(mMatrix1[0][0] == 2);
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test(mMatrix1[0][1] == 24);
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test(mMatrix1[1][0] == -4);
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test(mMatrix1[1][1] == 5);
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// Test operator to set a value
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Matrix2x2 test3;
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test3[0][0] = 2;
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test3[0][1] = 24;
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test3[1][0] = -4;
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test3[1][1] = 5;
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test(test3 == mMatrix1);
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}
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};
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}
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#endif
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