Class TAbstractLightNode
Unit
X3DNodes
Declaration
type TAbstractLightNode = class(TAbstractChildNode)
Description
Base class for all the light nodes.
Hierarchy
Overview
Methods
Properties
Description
Methods
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procedure GroupBeforeTraverse(const State: TX3DGraphTraverseState; var WasPointingDeviceSensor: Boolean); override; |
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constructor Create(const AX3DName: string = ''; const ABaseUrl: string = ''); override; |
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procedure UpdateLightInstanceState( var LightInstance: TLightInstance; State: TX3DGraphTraverseState); |
Update TLightInstance record when lighting State changes. Assumes that LightInstance.Node = Self.
This will set LightInstance.Transform properties, and recalculate all LightInstance properties based on Transform.
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procedure UpdateLightInstance( var LightInstance: TLightInstance); virtual; |
Update TLightInstance record when lighting location/direction (and other properties precalculated on TLightInstance) change. Assumes that LightInstance.Node = Self.
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function Scope: TLightScope; virtual; |
Light scope. Default implementation returns lsGlobal or lsLocal, depending on "global" field value (this follows VRML/X3D >= 2.0 rules).
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function Transform: TMatrix4; |
Transformation of this light node. Beware: In X3D, light nodes can be instantiated many times within the scene, with different transformations, so this transformation property should not be used in general.
Use this only if you you know that light node occurs only once within the scene (see [https://castle-engine.io/x3d_extensions.php#section_ext_shadow_maps]). Or if you're fine with just getting an undefined transformation, for any of the light instances.
This value is calculated during traversing. Last BeforeTraverse call for this node sets this property. By default, it represents identity transformation.
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procedure CreateNode; override; |
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class function ClassX3DType: string; override; |
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procedure SetEffects(const Value: array of TEffectNode); |
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Properties
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property AmbientIntensity: Single read GetAmbientIntensity write SetAmbientIntensity; |
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property FdColor: TSFColor read FFdColor; |
Internal wrapper for property Color. This wrapper API may change, we advise to access simpler Color instead.
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property FdGlobal: TSFBool read FFdGlobal; |
Internal wrapper for property Global. This wrapper API may change, we advise to access simpler Global instead.
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property Global: Boolean read GetGlobal write SetGlobal; |
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property FdIntensity: TSFFloat read FFdIntensity; |
Internal wrapper for property Intensity. This wrapper API may change, we advise to access simpler Intensity instead.
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property Intensity: Single read GetIntensity write SetIntensity; |
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property FdOn: TSFBool read FFdOn; |
Internal wrapper for property IsOn. This wrapper API may change, we advise to access simpler IsOn instead.
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property IsOn: Boolean read GetIsOn write SetIsOn; |
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property FdEffects: TMFNode read FFdEffects; |
Internal wrapper for property Effects . This wrapper API may change, we advise to access simpler Effects instead.
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property FdShadowVolumes: TSFBool read FFdShadowVolumes; |
Internal wrapper for property ShadowVolumes. This wrapper API may change, we advise to access simpler ShadowVolumes instead.
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property ShadowVolumes: Boolean read GetShadowVolumes write SetShadowVolumes; |
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