 | CameraNode Class |
Represents a camera in a scene.
Inheritance HierarchyNamespace: DigitalRune.Graphics.SceneGraph
Assembly: DigitalRune.Graphics (in DigitalRune.Graphics.dll) Version: 1.2.0.0 (1.2.1.14562)
SyntaxThe CameraNode type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | CameraNode |
Initializes a new instance of the CameraNode class.
|
Methods| Name | Description | |
|---|---|---|
| Clone |
Creates a new SceneNode that is a clone of the current instance (incl. all
children).
|
 | CloneCore |
Makes the instance a clone (deep copy) of the specified SceneNode.
(Overrides SceneNodeCloneCore(SceneNode).) |
| CreateInstanceCore |
When implemented in a derived class, creates a new instance of the
SceneNode derived class.
(Overrides SceneNodeCreateInstanceCore.) |
| Dispose(Boolean) |
Releases all resources used by the scene node and all descendant nodes.
(Inherited from SceneNode.) |
| Dispose(Boolean, Boolean) |
Releases the unmanaged resources used by an instance of the SceneNode class
and optionally releases the managed resources.
(Overrides SceneNodeDispose(Boolean, Boolean).) |
| Equals | (Inherited from Object.) |
| Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
| GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
 | GetInstances |
Gets a read-only collection of all camera node instances.
|
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| Invalidate |
Invalidates this scene node and all children.
(Inherited from SceneNode.) |
| InvalidateViewDependentData |
Resets any view-dependent information in the ViewDependentData dictionary.
|
| MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
| OnParentChanged |
Called when Parent was changed.
(Inherited from SceneNode.) |
| OnPoseChanged |
Raises the PoseChanged event.
(Inherited from SceneNode.) |
| OnSceneChanged |
Raises the SceneChanged event.
(Inherited from SceneNode.) |
| OnShapeChanged |
Raises the ShapeChanged event.
(Inherited from SceneNode.) |
| ToString | Returns a string that represents the current object. (Inherited from Object.) |
Extension Methods| Name | Description | |
|---|---|---|
 | ClearLastPose |
Clears the LastPoseWorld property of the current scene node (and its
descendants).
(Defined by SceneHelper.) |
| ClearLastScale |
Clears the LastScaleWorld property of the current scene node (and
its descendants).
(Defined by SceneHelper.) |
| Contains |
Determines whether whether a scene node contains another scene node in its subtree.
(Defined by SceneHelper.) |
| GetAncestors |
Gets the ancestors of the given scene node.
(Defined by SceneHelper.) |
| GetChildren |
Gets the children of the given scene node.
(Defined by SceneHelper.) |
| GetDescendants | Overloaded.
Gets the descendants of the given scene node using a depth-first search.
(Defined by SceneHelper.) |
| GetDescendants(Boolean) | Overloaded.
Gets the descendants of the given scene node using a depth-first or a breadth-first search.
(Defined by SceneHelper.) |
| GetLeaves |
Gets the leaves of the scene node.
(Defined by SceneHelper.) |
| GetRoot |
Gets the root node.
(Defined by SceneHelper.) |
| GetSceneNode |
Gets a scene node by name from the subtree of the specified scene node.
(Defined by SceneHelper.) |
| GetSelfAndAncestors |
Gets the scene node and its ancestors scene.
(Defined by SceneHelper.) |
| GetSubtree | Overloaded.
Gets the subtree (the given scene node and all of its descendants) using a depth-first
search.
(Defined by SceneHelper.) |
| GetSubtree(Boolean) | Overloaded.
Gets the subtree (the given scene node and all of its descendants) using a depth-first or a
breadth-first search.
(Defined by SceneHelper.) |
| GetSubtreeAabb |
Gets the AABB of the current subtree.
(Defined by SceneHelper.) |
| LookAt(Vector3F, Vector3F) | Overloaded.
Rotates the scene node so that it faces a certain direction (in world space).
(Defined by SceneHelper.) |
| LookAt(Vector3F, Vector3F, Vector3F) | Overloaded.
Moves and rotates the scene node so that it faces a certain direction (in world space).
(Defined by SceneHelper.) |
| SetInstanceAlpha |
Sets the opacity (alpha) of a scene node - see remarks.
(Defined by SceneHelper.) |
| SetLastPose |
Sets LastPoseWorld to the current
PoseWorld.
(Defined by SceneHelper.) |
| SetLastScale |
Sets LastScaleWorld to the current
ScaleWorld.
(Defined by SceneHelper.) |
| SupportsInstanceAlpha |
Determines whether the opacity of the scene node can be changed using
SetInstanceAlpha(SceneNode, Single).
(Defined by SceneHelper.) |
Properties| Name | Description | |
|---|---|---|
 | Aabb |
Gets the axis-aligned bounding box (AABB) in world space.
(Inherited from SceneNode.) |
| ActualIsEnabled |
Gets a value indicating whether this scene node is actually enabled. (The method checks the
current scene node and its ancestors.)
(Inherited from SceneNode.) |
| Camera |
Gets or sets the camera.
|
| CastsShadows |
Gets or sets a value indicating whether this scene node blocks the light and casts shadows.
(Inherited from SceneNode.) |
| Children |
Gets or sets the children of this scene node.
(Inherited from SceneNode.) |
| IsDisposed |
Gets a value indicating whether this scene node has been disposed of.
(Inherited from SceneNode.) |
| IsEnabled |
Gets or sets a value indicating whether this scene node is enabled. (May override children -
see remarks.)
(Inherited from SceneNode.) |
| IsRenderable |
Gets or sets a value indicating whether this scene node can be rendered with a
SceneNodeRenderer.
(Inherited from SceneNode.) |
| IsShadowCasterCulled |
Gets or sets a value indicating whether the occlusion culling determined that this scene
node does not need to be rendered into the shadow map of the directional light.
(Inherited from SceneNode.) |
| IsStatic |
Gets or sets a value indicating whether this scene node is static (immobile).
(Inherited from SceneNode.) |
| LastFrame |
Gets or sets the number of the last frame in which the scene node was rendered.
(Inherited from SceneNode.) |
| LastPoseWorld |
Gets or sets the PoseWorld of the last frame.
(Inherited from SceneNode.) |
| LastScaleWorld |
Gets or sets the ScaleWorld of the last frame.
(Inherited from SceneNode.) |
| LodBias |
Gets or sets the LOD bias of the camera.
|
| MaxDistance |
Gets or sets the maximum distance up to which the scene node is rendered. (Needs to be
normalized - see remarks.)
(Inherited from SceneNode.) |
| Name |
Gets or sets the name of this scene node.
(Inherited from SceneNode.) |
| Parent |
Gets the parent scene node.
(Inherited from SceneNode.) |
| PoseLocal |
Gets or sets the pose (position and orientation) relative to the parent scene node.
(Inherited from SceneNode.) |
| PoseWorld |
Gets or sets the pose (position and orientation) in world space.
(Inherited from SceneNode.) |
| Proxy |
Gets or sets the proxy node.
(Inherited from SceneNode.) |
| RenderData |
Gets or sets the cached renderer data.
(Inherited from SceneNode.) |
| ScaleLocal |
Gets or sets the scale relative to the parent scene node.
(Inherited from SceneNode.) |
| ScaleWorld |
Gets the total effective scale (which incorporates the scale factors of parent scene nodes).
(Inherited from SceneNode.) |
| SceneData |
Gets or sets scene data.
(Inherited from SceneNode.) |
| Shape |
Gets (or sets) the bounding shape of this scene node.
(Inherited from SceneNode.) |
| SortTag |
Gets or sets the sort tag.
(Inherited from SceneNode.) |
| UserData |
Gets or sets user-defined data.
(Inherited from SceneNode.) |
| UserFlags |
Gets or sets a 16-bit value which can be used to store user-defined information or flags.
(Inherited from SceneNode.) |
| View |
Gets or sets the view matrix.
|
| ViewDependentData |
Gets a dictionary that can be used to store view-dependent information.
|
| ViewInverse |
Gets or sets the inverse of the view matrix.
|
Events| Name | Description | |
|---|---|---|
 | SceneChanged |
Occurs when the local subtree changed.
(Inherited from SceneNode.) |
| ShapeChanged |
Occurs when the Shape or ScaleWorld was changed.
(Inherited from SceneNode.) |
Explicit Interface Implementations| Name | Description | |
|---|---|---|
  | IDisposableDispose |
Releases all resources used by the scene node and all descendant nodes.
(Inherited from SceneNode.) |
| IGeometricObjectClone |
Creates a new IGeometricObject that is a clone (deep copy) of the current
instance.
(Inherited from SceneNode.) |
 | IGeometricObjectPose |
Gets the pose (position and orientation) in world space.
(Inherited from SceneNode.) |
 | IGeometricObjectPoseChanged |
Occurs when the pose was changed.
(Inherited from SceneNode.) |
| IGeometricObjectScale |
Gets the total effective scale (which incorporates the scale factors of parent scene nodes).
(Inherited from SceneNode.) |
RemarksA CameraNode positions a Camera object in a 3D scene. The CameraNode defines the view transformation, whereas the Camera object defines the projection transformation and imaging properties. Multiple CameraNodes can share the same Camera object.
The view transformation is defined by the following properties: PoseLocal, PoseWorld, View, or ViewInverse. A new view transformation can be set in several ways:
- By setting the property PoseLocal to define a position and orientation in a scene relative to a parent node.
- By setting the property PoseWorld to define an absolute position and orientation in world space.
- By setting the property View or ViewInverse which sets the absolute transformation in world space.
- By calling the method LookAt(SceneNode, Vector3F, Vector3F).
View Space (View Coordinate System): View space is the local coordinate system of a camera. In view space x-axis points to the right, the y-axis points up, and the z-axis points towards the viewer.
View-Dependent Information: In special cases other objects need to store information which is only valid for a certain view. This data can be stored in the ViewDependentData dictionary. The method InvalidateViewDependentData can be called to reset any data in the dictionary. This is necessary when there is an abrupt change ("cut") in the scene.
Cloning: When a CameraNode is cloned the Camera is not duplicated. The Camera is copied by reference (shallow copy). The original CameraNode and the cloned CameraNode will reference the same Camera object.
See Also