| 1 | // Copyright (C) 2016 Klaralvdalens Datakonsult AB (KDAB). |
|---|---|
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
| 3 | |
| 4 | #include "scene3dsgnode_p.h" |
| 5 | |
| 6 | #include <QtCore/qthread.h> |
| 7 | |
| 8 | #include <scene3dlogging_p.h> |
| 9 | |
| 10 | QT_BEGIN_NAMESPACE |
| 11 | |
| 12 | namespace Qt3DRender { |
| 13 | |
| 14 | /*! |
| 15 | \class Qt3DCore::Scene3DSGNode |
| 16 | \internal |
| 17 | |
| 18 | \brief The Qt3DCore::Scene3DSGNode class is a simple QSGeometryNode subclass that |
| 19 | uses a Qt3DCore::Scene3DMaterial |
| 20 | |
| 21 | The Qt3DCore::Scene3DSGNode allows to render a simple rectangle textured with a |
| 22 | texture using premultiplied alpha. |
| 23 | */ |
| 24 | Scene3DSGNode::Scene3DSGNode() |
| 25 | : QSGGeometryNode() |
| 26 | , m_geometry(QSGGeometry::defaultAttributes_TexturedPoint2D(), 4) |
| 27 | { |
| 28 | setMaterial(&m_material); |
| 29 | setOpaqueMaterial(&m_opaqueMaterial); |
| 30 | setGeometry(&m_geometry); |
| 31 | qCDebug(Scene3D) << Q_FUNC_INFO << QThread::currentThread(); |
| 32 | } |
| 33 | |
| 34 | Scene3DSGNode::~Scene3DSGNode() |
| 35 | { |
| 36 | qCDebug(Scene3D) << Q_FUNC_INFO << QThread::currentThread(); |
| 37 | // The Scene3DSGNode is deleted by the QSGRenderThread when the SceneGraph |
| 38 | // is terminated. |
| 39 | } |
| 40 | |
| 41 | void Scene3DSGNode::setRect(const QRectF &rect, bool mirrorVertically) |
| 42 | { |
| 43 | if (rect != m_rect) { |
| 44 | m_rect = rect; |
| 45 | // By default, map the item's bounding rect to normalized texture coordinates |
| 46 | |
| 47 | QRectF textureRect = QRectF(0.0f, 1.0f, 1.0f, -1.0f); |
| 48 | if (mirrorVertically) { |
| 49 | float tmp = textureRect.top(); |
| 50 | textureRect.setTop(textureRect.bottom()); |
| 51 | textureRect.setBottom(tmp); |
| 52 | } |
| 53 | |
| 54 | QSGGeometry::updateTexturedRectGeometry(g: &m_geometry, rect: m_rect, sourceRect: textureRect); |
| 55 | markDirty(bits: DirtyGeometry); |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | void Scene3DSGNode::show() |
| 60 | { |
| 61 | m_material.show(); |
| 62 | m_opaqueMaterial.show(); |
| 63 | } |
| 64 | |
| 65 | } // namespace Qt3DRender |
| 66 | |
| 67 | QT_END_NAMESPACE |
| 68 |