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// Copyright (C) 2019 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include <QTest>
#include <QSignalSpy>
#include <QtQuick3D/private/qquick3dperspectivecamera_p.h>
#include <QtQuick3DRuntimeRender/private/qssgrendercamera_p.h>
#include <QtQuick3DUtils/private/qssgutils_p.h>
#include <limits>
class tst_QQuick3DPerspectiveCamera : public QObject
{
Q_OBJECT
// Work-around to get access to updateSpatialNode
class Camera : public QQuick3DPerspectiveCamera
{
public:
using QQuick3DCamera::updateSpatialNode;
};
class NodeItem : public QQuick3DNode
{
public:
using QQuick3DNode::updateSpatialNode;
};
private slots:
void testClipAndFov();
void testLookAt();
void mapToViewport();
};
void tst_QQuick3DPerspectiveCamera::testClipAndFov()
{
Camera camera;
auto node = static_cast<QSSGRenderCamera *>(camera.updateSpatialNode(nullptr));
const auto originalNode = node; // for comparisons later...
QVERIFY(node);
const float clipNear = 0.2f;
camera.setClipNear(clipNear);
node = static_cast<QSSGRenderCamera *>(camera.updateSpatialNode(node));
QCOMPARE(originalNode, node);
QVERIFY(node->isDirty(QSSGRenderCamera::DirtyFlag::CameraDirty));
QCOMPARE(clipNear, node->clipPlanes.clipNear());
const float clipFar = 0.4f;
camera.setClipFar(clipFar);
node = static_cast<QSSGRenderCamera *>(camera.updateSpatialNode(node));
QCOMPARE(originalNode, node);
QVERIFY(node->isDirty(QSSGRenderCamera::DirtyFlag::CameraDirty));
QCOMPARE(clipFar, node->clipPlanes.clipFar());
const float fov = 6.2f;
camera.setFieldOfView(fov);
node = static_cast<QSSGRenderCamera *>(camera.updateSpatialNode(node));
QCOMPARE(originalNode, node);
QVERIFY(node->isDirty(QSSGRenderCamera::DirtyFlag::CameraDirty));
QCOMPARE(fov, node->fov.degrees()); // fov is in degrees in the front-end API.
const QQuick3DPerspectiveCamera::FieldOfViewOrientation fovOrientation
= QQuick3DPerspectiveCamera::FieldOfViewOrientation::Horizontal;
camera.setFieldOfViewOrientation(fovOrientation);
node = static_cast<QSSGRenderCamera *>(camera.updateSpatialNode(node));
QCOMPARE(originalNode, node);
QVERIFY(node->isDirty(QSSGRenderCamera::DirtyFlag::CameraDirty));
QVERIFY(node->fov.orientation() == QSSGRenderCamera::FieldOfView::Orientation::Horizontal);
camera.setFieldOfViewOrientation(QQuick3DPerspectiveCamera::FieldOfViewOrientation::Vertical);
node = static_cast<QSSGRenderCamera *>(camera.updateSpatialNode(node));
QVERIFY(node->fov.orientation() == QSSGRenderCamera::FieldOfView::Orientation::Vertical);
}
void tst_QQuick3DPerspectiveCamera::testLookAt()
{
Camera cam1;
Camera cam2;
NodeItem nodeItem;
nodeItem.setPosition(QVector3D(200.f, 0.f, 0.f));
cam1.setPosition(QVector3D(100.f, 0.f, 100.f));
cam2.setPosition(QVector3D(100.f, 0.f, 100.f));
auto node = static_cast<QSSGRenderNode *>(nodeItem.updateSpatialNode(nullptr));
auto camNode1 = static_cast<QSSGRenderNode *>(cam1.updateSpatialNode(nullptr));
auto camNode2 = static_cast<QSSGRenderNode *>(cam2.updateSpatialNode(nullptr));
QVERIFY(node);
QVERIFY(camNode1);
QVERIFY(camNode2);
// Verify that using lookAt method and lookAtNode property result in same rotation
cam1.setLookAtNode(&nodeItem);
cam2.lookAt(&nodeItem);
camNode1 = static_cast<QSSGRenderNode *>(cam1.updateSpatialNode(camNode1));
camNode2 = static_cast<QSSGRenderNode *>(cam2.updateSpatialNode(camNode2));
QVERIFY(qFuzzyIsNull(cam1.eulerRotation().x()));
QVERIFY(qFuzzyCompare(cam1.eulerRotation().y(), -45.f));
QVERIFY(qFuzzyIsNull(cam1.eulerRotation().z()));
QVERIFY(qFuzzyIsNull(cam2.eulerRotation().x()));
QVERIFY(qFuzzyCompare(cam2.eulerRotation().y(), -45.f));
QVERIFY(qFuzzyIsNull(cam2.eulerRotation().z()));
QVERIFY(qFuzzyCompare(QQuaternion::fromRotationMatrix(QSSGUtils::mat44::getUpper3x3(camNode1->localTransform)), cam1.rotation()));
QVERIFY(qFuzzyCompare(QQuaternion::fromRotationMatrix(QSSGUtils::mat44::getUpper3x3(camNode2->localTransform)), cam2.rotation()));
// Verify that rotation automatically changes when moving camera and using lookAtNode property
cam1.setPosition(QVector3D(300.f, 0.f, 100.f));
cam2.setPosition(QVector3D(300.f, 0.f, 100.f));
camNode1 = static_cast<QSSGRenderNode *>(cam1.updateSpatialNode(camNode1));
camNode2 = static_cast<QSSGRenderNode *>(cam2.updateSpatialNode(camNode2));
QVERIFY(qFuzzyIsNull(cam1.eulerRotation().x()));
QVERIFY(qFuzzyCompare(cam1.eulerRotation().y(), 45.f)); // rotation updates
QVERIFY(qFuzzyIsNull(cam1.eulerRotation().z()));
QVERIFY(qFuzzyIsNull(cam2.eulerRotation().x()));
QVERIFY(qFuzzyCompare(cam2.eulerRotation().y(), -45.f)); // rotation doesn't update
QVERIFY(qFuzzyIsNull(cam2.eulerRotation().z()));
QVERIFY(qFuzzyCompare(QQuaternion::fromRotationMatrix(QSSGUtils::mat44::getUpper3x3(camNode1->localTransform)), cam1.rotation()));
QVERIFY(qFuzzyCompare(QQuaternion::fromRotationMatrix(QSSGUtils::mat44::getUpper3x3(camNode2->localTransform)), cam2.rotation()));
// Verify that rotation automatically changs when moving the target node
nodeItem.setPosition(QVector3D(200.f, 0.f, 100.f));
node = static_cast<QSSGRenderNode *>(nodeItem.updateSpatialNode(node));
camNode1 = static_cast<QSSGRenderNode *>(cam1.updateSpatialNode(camNode1));
camNode2 = static_cast<QSSGRenderNode *>(cam2.updateSpatialNode(camNode2));
QVERIFY(qFuzzyIsNull(cam1.eulerRotation().x()));
QVERIFY(qFuzzyCompare(cam1.eulerRotation().y(), 90.f)); // rotation updates
QVERIFY(qFuzzyIsNull(cam1.eulerRotation().z()));
QVERIFY(qFuzzyIsNull(cam2.eulerRotation().x()));
QVERIFY(qFuzzyCompare(cam2.eulerRotation().y(), -45.f)); // rotation doesn't update
QVERIFY(qFuzzyIsNull(cam2.eulerRotation().z()));
QVERIFY(qFuzzyCompare(QQuaternion::fromRotationMatrix(QSSGUtils::mat44::getUpper3x3(camNode1->localTransform)), cam1.rotation()));
QVERIFY(qFuzzyCompare(QQuaternion::fromRotationMatrix(QSSGUtils::mat44::getUpper3x3(camNode2->localTransform)), cam2.rotation()));
}
void tst_QQuick3DPerspectiveCamera::mapToViewport()
{
Camera camera;
auto node = static_cast<QSSGRenderCamera *>(camera.updateSpatialNode(nullptr));
QVERIFY(node);
// QTBUG-100832
const float floatMax = std::numeric_limits<float>::max();
const QVector3D largeValue(-floatMax, floatMax, floatMax);
QVector3D result = camera.mapToViewport(largeValue);
QVERIFY(result.isNull());
}
QTEST_APPLESS_MAIN(tst_QQuick3DPerspectiveCamera)
#include "tst_qquick3dperspectivecamera.moc"
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