| 1 | // Copyright (C) 2014 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 "transform_p.h" |
| 5 | |
| 6 | #include <Qt3DCore/private/qchangearbiter_p.h> |
| 7 | #include <Qt3DCore/qtransform.h> |
| 8 | #include <Qt3DCore/private/qtransform_p.h> |
| 9 | #include <Qt3DRender/qcamera.h> |
| 10 | |
| 11 | QT_BEGIN_NAMESPACE |
| 12 | |
| 13 | |
| 14 | namespace Qt3DRender { |
| 15 | namespace Render { |
| 16 | |
| 17 | using namespace Qt3DCore; |
| 18 | |
| 19 | Transform::Transform() |
| 20 | : BackendNode(ReadWrite) |
| 21 | , m_rotation() |
| 22 | , m_scale(1.0f, 1.0f, 1.0f) |
| 23 | , m_translation() |
| 24 | { |
| 25 | } |
| 26 | |
| 27 | void Transform::cleanup() |
| 28 | { |
| 29 | m_rotation = QQuaternion(); |
| 30 | m_scale = QVector3D(); |
| 31 | m_translation = QVector3D(); |
| 32 | m_transformMatrix = Matrix4x4(); |
| 33 | QBackendNode::setEnabled(false); |
| 34 | } |
| 35 | |
| 36 | Matrix4x4 Transform::transformMatrix() const |
| 37 | { |
| 38 | return m_transformMatrix; |
| 39 | } |
| 40 | |
| 41 | QVector3D Transform::scale() const |
| 42 | { |
| 43 | return m_scale; |
| 44 | } |
| 45 | |
| 46 | QQuaternion Transform::rotation() const |
| 47 | { |
| 48 | return m_rotation; |
| 49 | } |
| 50 | |
| 51 | QVector3D Transform::translation() const |
| 52 | { |
| 53 | return m_translation; |
| 54 | } |
| 55 | |
| 56 | void Transform::syncFromFrontEnd(const QNode *frontEnd, bool firstTime) |
| 57 | { |
| 58 | const Qt3DCore::QTransform *transform = qobject_cast<const Qt3DCore::QTransform *>(object: frontEnd); |
| 59 | if (!transform) |
| 60 | return; |
| 61 | |
| 62 | bool dirty = m_rotation != transform->rotation(); |
| 63 | m_rotation = transform->rotation(); |
| 64 | dirty |= m_scale != transform->scale3D(); |
| 65 | m_scale = transform->scale3D(); |
| 66 | dirty |= m_translation != transform->translation(); |
| 67 | m_translation = transform->translation(); |
| 68 | |
| 69 | if (dirty || firstTime) { |
| 70 | auto camera = qobject_cast<const Qt3DRender::QCamera *>(object: transform->parentNode()); |
| 71 | if (camera) { |
| 72 | m_viewMatrix = Matrix4x4(camera->viewMatrix()); |
| 73 | m_hasViewMatrix = true; |
| 74 | } else { |
| 75 | m_hasViewMatrix = false; |
| 76 | } |
| 77 | updateMatrix(); |
| 78 | markDirty(changes: AbstractRenderer::TransformDirty); |
| 79 | } |
| 80 | |
| 81 | if (transform->isEnabled() != isEnabled()) |
| 82 | markDirty(changes: AbstractRenderer::TransformDirty); |
| 83 | |
| 84 | BackendNode::syncFromFrontEnd(frontEnd, firstTime); |
| 85 | } |
| 86 | |
| 87 | void Transform::updateMatrix() |
| 88 | { |
| 89 | QMatrix4x4 m; |
| 90 | m.translate(vector: m_translation); |
| 91 | m.rotate(quaternion: m_rotation); |
| 92 | m.scale(vector: m_scale); |
| 93 | m_transformMatrix = Matrix4x4(m); |
| 94 | } |
| 95 | |
| 96 | } // namespace Render |
| 97 | } // namespace Qt3DRender |
| 98 | |
| 99 | QT_END_NAMESPACE |
| 100 |