87 lines
2.9 KiB
Ucode
87 lines
2.9 KiB
Ucode
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/**
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* Copyright 1998-2013 Epic Games, Inc. All Rights Reserved.
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*/
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class DirectionalLightComponent extends LightComponent
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native(Light)
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hidecategories(Object)
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dependson(EngineTypes)
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editinlinenew;
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/**
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* Trace distance for static lighting. Objects further than TraceDistance away from an object won't be taken into
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* account for static shadowing applied to said object. This is used to work around floating point consistency
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* issues in the collision code with regard to very long traces. The old default was WORLD_MAX.
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*/
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var(AdvancedLighting) float TraceDistance;
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/**
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* Radius of the whole scene dynamic shadow centered on the viewer, which replaces the precomputed shadows based on distance from the camera.
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* A Radius of 0 disables the dynamic shadow. This feature is currently only supported on dominant directional lights.
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*/
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`if(`__TW_)
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var(CascadedShadowMaps) interp float WholeSceneDynamicShadowRadius<UIMin=0.0 | UIMax=1000.0>;
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`else
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var(CascadedShadowMaps) interp float WholeSceneDynamicShadowRadius;
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`endif
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/**
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* Number of cascades to split the view frustum into for the whole scene dynamic shadow.
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* More cascades result in better shadow resolution and allow WholeSceneDynamicShadowRadius to be further, but add rendering cost.
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*/
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`if(`__TW_)
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var(CascadedShadowMaps) editconst const int NumWholeSceneDynamicShadowCascades;
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`else
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var(CascadedShadowMaps) editconst const int NumWholeSceneDynamicShadowCascades;
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`endif
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/**
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* Exponent that is applied to the cascade transition distances as a fraction of WholeSceneDynamicShadowRadius.
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* An exponent of 1 means that cascade transitions will happen at a distance proportional to their resolution.
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* A value greater than 1 brings transitions closer to the camera.
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*/
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`if(`__TW_)
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var const float CascadeDistributionExponent;
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`else
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var(CascadedShadowMaps) const float CascadeDistributionExponent;
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`endif
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/** The Lightmass settings for this object. */
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var(Lightmass) LightmassDirectionalLightSettings LightmassSettings <ScriptOrder=true>;
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cpptext
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{
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virtual FLightSceneInfo* CreateSceneInfo() const;
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virtual FVector4 GetPosition() const;
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virtual ELightComponentType GetLightType() const;
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/**
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* Called after property has changed via e.g. property window or set command.
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*
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* @param PropertyThatChanged UProperty that has been changed, NULL if unknown
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*/
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virtual void PostEditChangeProperty(FPropertyChangedEvent& PropertyChangedEvent);
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}
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/** Called from matinee code when LightColor property changes. */
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function OnUpdatePropertyLightColor()
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{
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UpdateColorAndBrightness();
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}
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/** Called from matinee code when Brightness property changes. */
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function OnUpdatePropertyBrightness()
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{
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UpdateColorAndBrightness();
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}
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defaultproperties
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{
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TraceDistance=100000
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NumWholeSceneDynamicShadowCascades=1
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CascadeDistributionExponent=4
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`if(`__TW_LIGHTING_MODIFICATIONS_)
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WholeSceneDynamicShadowRadius=750
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bCastPerObjectShadows=TRUE
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`endif
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}
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