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| |
| #include "qquick3dcustomcamera_p.h" |
| |
| #include <QtQuick3DRuntimeRender/private/qssgrendercamera_p.h> |
| |
| #include <QtMath> |
| #include <QtQuick3DUtils/private/qssgutils_p.h> |
| |
| #include "qquick3dutils_p.h" |
| |
| QT_BEGIN_NAMESPACE |
| |
| /*! |
| \qmltype CustomCamera |
| \inherits Camera |
| \inqmlmodule QtQuick3D |
| \brief Defines a Custom Camera for viewing the content of a 3D scene. |
| |
| A Camera is always necessary to view the content of a 3D scene. A camera |
| defines how to project the content of a 3D scene into a 2D coordinate space, |
| which can then be used on a 2D surface. When a camera is present in the scene |
| it can be used to direct what is displayed in a View3D. |
| |
| To determine the projection of this camera a high level API is provided. |
| First it is possible to position this Camera like any other spatial Node in |
| the scene. This determines where the Camera is in the scene, and what |
| direction it is facing. The default direction of the camera is such that the |
| forward vector is looking up the +Z axis, and the up direction vector is up |
| the +Y axis. With this in mind any transformation applied to the camera as |
| well as the transformations inherited from it's parent Nodes you can define |
| exactly where and in what direction your camera is facing. |
| |
| If you need full-control over how the projection matrix is created, this is the camera |
| to use. |
| |
| \sa PerspectiveCamera, OrthographicCamera, FrustumCamera |
| */ |
| |
| /*! |
| * \internal |
| */ |
| QQuick3DCustomCamera::QQuick3DCustomCamera() {} |
| |
| /*! |
| \qmlproperty matrix4x4 CustomCamera::projection |
| |
| This property defines a custom projection matrix. |
| */ |
| QMatrix4x4 QQuick3DCustomCamera::projection() const |
| { |
| return m_projection; |
| } |
| |
| void QQuick3DCustomCamera::setProjection(const QMatrix4x4 &projection) |
| { |
| if (m_projection == projection) |
| return; |
| |
| m_projection = projection; |
| emit projectionChanged(); |
| update(); |
| } |
| |
| bool QQuick3DCustomCamera::checkSpatialNode(QSSGRenderCamera *camera) |
| { |
| camera->flags.setFlag(QSSGRenderNode::Flag::CameraCustomProjection, true); |
| |
| bool changed = false; |
| changed |= qUpdateIfNeeded(camera->projection, m_projection); |
| changed |= qUpdateIfNeeded(camera->enableFrustumClipping, frustumCullingEnabled()); |
| |
| return changed; |
| } |
| |
| QT_END_NAMESPACE |