 | GradientTextureSkyNode Class |
Renders the sky using lookup textures which contain color gradients.
Inheritance HierarchySystemObject
DigitalRune.Graphics.SceneGraphSceneNode
DigitalRune.Graphics.SceneGraphSkyNode
DigitalRune.Graphics.SceneGraphGradientTextureSkyNode
DigitalRune.Graphics.SceneGraphSceneNode
DigitalRune.Graphics.SceneGraphSkyNode
DigitalRune.Graphics.SceneGraphGradientTextureSkyNode
Namespace: DigitalRune.Graphics.SceneGraph
Assembly: DigitalRune.Graphics (in DigitalRune.Graphics.dll) Version: 1.2.0.0 (1.2.1.14562)
SyntaxThe GradientTextureSkyNode type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | GradientTextureSkyNode |
Initializes a new instance of the GradientTextureSkyNode 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 SkyNodeCloneCore(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.
(Inherited from SceneNode.) |
| 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.) |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| Invalidate |
Invalidates this scene node and all children.
(Inherited from SceneNode.) |
| 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.) |
Fields| Name | Description | |
|---|---|---|
 | CieSkyParameters |
The parameters of the CIE sky luminance distribution.
|
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.) |
| BackTexture |
Gets or sets the gradient lookup texture for the side opposite to the sun.
|
| 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.) |
| CieSkyStrength |
Gets or sets the strength of the CIE sky luminance distribution (see
CieSkyParameters).
|
| Color |
Gets or sets the tint color of the sky.
|
| DrawOrder |
Gets or sets the draw order.
(Inherited from SkyNode.) |
| FrontTexture |
Gets or sets the gradient lookup texture for the side facing to the sun.
|
| 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.) |
| 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 SkyNode.) |
| SortTag |
Gets or sets the sort tag.
(Inherited from SceneNode.) |
| SunDirection |
Gets or sets the direction to the sun.
|
| TimeOfDay |
Gets or sets the time of day.
|
| 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.) |
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.) |
RemarksThis class represents a sky. Only the top hemisphere is rendered. The sky colors are determined by two lookup textures: FrontTexture and BackTexture. The FrontTexture determines the sky colors in the direction of the sun. The BackTexture determines the sky colors opposite to the sun.
The lookup texture are used like this: The columns of the textures represent the sky colors of a specific time of the day. The first column is for the hour 0 (midnight). The middle column is for the hour 12 (noon). The last column is for the hour 24 (midnight). Each column contains the sky colors. The bottom color is the horizon color. The top color is the zenith color.
To render the sky, the TimeOfDay is used to determine which column of the textures should be sampled. Then the gradient of the FrontTexture is used to render the sky in the direction of the sun. The gradient of the BackTexture is used to render the sky opposite to the sun. The other sky colors are interpolated from both gradients.
To avoid artifacts in the zenith, the colors of the top row of both textures should be identical.
Cloning: When a GradientTextureSkyNode is cloned the lookup textures are not duplicated. The textures are copied by reference (shallow copy). The original GradientTextureSkyNode and the cloned instance will reference the same textures.
See Also