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98 lines
2.9 KiB
C++
98 lines
2.9 KiB
C++
//
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// TransformTests.cpp
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// tests/shared/src
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//
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// Copyright 2013-2015 High Fidelity, Inc.
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//
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// Distributed under the Apache License, Version 2.0.
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// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
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//
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#include "TransformTests.h"
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#include <algorithm>
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#include <SharedLogging.h>
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#include <test-utils/QTestExtensions.h>
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#include <QtCore/QDebug>
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#include <Transform.h>
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#include <StreamUtils.h>
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#include <glm/glm.hpp>
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//using namespace glm;
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const vec3 xAxis(1.0f, 0.0f, 0.0f);
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const vec3 yAxis(0.0f, 1.0f, 0.0f);
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const vec3 zAxis(0.0f, 0.0f, 1.0f);
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const quat rot90 = glm::angleAxis((float)M_PI / 2.0f, yAxis);
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QTEST_MAIN(TransformTests)
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const float TEST_EPSILON = 0.001f;
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void TransformTests::getMatrix() {
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const vec3 t(0.0f, 0.0f, 10.0f);
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// create a matrix that is composed of a PI/2 rotation followed by a small z translation
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const mat4 m(vec4(rot90 * xAxis, 0.0f),
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vec4(rot90 * yAxis, 0.0f),
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vec4(rot90 * zAxis, 0.0f),
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vec4(vec4(t, 1.0f)));
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// postScale by a mirror about the x axis.
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const mat4 mirrorX(vec4(-1.0f, 0.0f, 0.0f, 0.0f),
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vec4( 0.0f, 1.0f, 0.0f, 0.0f),
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vec4( 0.0f, 0.0f, 1.0f, 0.0f),
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vec4( 0.0f, 0.0f, 0.0f, 1.0f));
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const mat4 result_a = m * mirrorX;
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Transform xform;
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xform.setRotation(rot90);
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xform.setTranslation(t);
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xform.postScale(vec3(-1.0f, 1.0f, 1.0f));
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mat4 result_b;
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xform.getMatrix(result_b);
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QCOMPARE_WITH_ABS_ERROR(result_a, result_b, TEST_EPSILON);
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}
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void TransformTests::getInverseMatrix() {
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const vec3 t(0.0f, 0.0f, 10.0f);
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// create a matrix that is composed of a PI/2 rotation followed by a small z translation
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const mat4 m(vec4(rot90 * xAxis, 0.0f),
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vec4(rot90 * yAxis, 0.0f),
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vec4(rot90 * zAxis, 0.0f),
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vec4(vec4(t, 1.0f)));
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// mirror about the x axis.
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const mat4 mirrorX(vec4(-1.0f, 0.0f, 0.0f, 0.0f),
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vec4( 0.0f, 1.0f, 0.0f, 0.0f),
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vec4( 0.0f, 0.0f, 1.0f, 0.0f),
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vec4( 0.0f, 0.0f, 0.0f, 1.0f));
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const mat4 result_a = glm::inverse(m * mirrorX);
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Transform xform;
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xform.setTranslation(t);
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xform.setRotation(rot90);
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xform.postScale(vec3(-1.0f, 1.0f, 1.0f));
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mat4 result_b;
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xform.getInverseMatrix(result_b);
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// don't check elements directly, instead compare each axis transformed by the matrix.
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auto xa = transformPoint(result_a, xAxis);
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auto ya = transformPoint(result_a, yAxis);
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auto za = transformPoint(result_a, zAxis);
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auto xb = transformPoint(result_b, xAxis);
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auto yb = transformPoint(result_b, yAxis);
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auto zb = transformPoint(result_b, zAxis);
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QCOMPARE_WITH_ABS_ERROR(xa, xb, TEST_EPSILON);
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QCOMPARE_WITH_ABS_ERROR(ya, yb, TEST_EPSILON);
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QCOMPARE_WITH_ABS_ERROR(za, zb, TEST_EPSILON);
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}
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