109 lines
3.6 KiB
C++
109 lines
3.6 KiB
C++
// Copyright (c) 2012-2024 Wojciech Figat. All rights reserved.
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#pragma once
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#include "Light.h"
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#include "Engine/Content/Assets/IESProfile.h"
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#include "Engine/Content/AssetReference.h"
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/// <summary>
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/// Point light emits light from point in all directions.
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/// </summary>
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API_CLASS(Attributes="ActorContextMenu(\"New/Lights/Point Light\"), ActorToolbox(\"Lights\")")
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class FLAXENGINE_API PointLight : public LightWithShadow
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{
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DECLARE_SCENE_OBJECT(PointLight);
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private:
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Float3 _direction;
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float _radius;
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public:
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/// <summary>
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/// Light source bulb radius
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/// </summary>
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API_FIELD(Attributes="EditorOrder(2), DefaultValue(0.0f), EditorDisplay(\"Light\"), Limit(0, 1000, 0.01f)")
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float SourceRadius = 0.0f;
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/// <summary>
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/// Light source bulb length
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/// </summary>
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API_FIELD(Attributes="EditorOrder(3), DefaultValue(0.0f), EditorDisplay(\"Light\"), Limit(0, 1000, 0.01f)")
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float SourceLength = 0.0f;
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/// <summary>
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/// Whether to use physically based inverse squared distance falloff, where Radius is only clamping the light's contribution.
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/// </summary>
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API_FIELD(Attributes = "EditorOrder(13), DefaultValue(false), EditorDisplay(\"Light\")")
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bool UseInverseSquaredFalloff = false;
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/// <summary>
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/// Controls the radial falloff of light when UseInverseSquaredFalloff is disabled.
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/// </summary>
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API_FIELD(Attributes="EditorOrder(14), DefaultValue(8.0f), EditorDisplay(\"Light\"), Limit(2, 16, 0.01f), VisibleIf(nameof(UseInverseSquaredFalloff), true)")
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float FallOffExponent = 8.0f;
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/// <summary>
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/// IES texture (light profiles from real world measured data)
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/// </summary>
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API_FIELD(Attributes="EditorOrder(211), DefaultValue(null), EditorDisplay(\"IES Profile\", \"IES Texture\")")
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AssetReference<IESProfile> IESTexture;
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/// <summary>
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/// Enable/disable using light brightness from IES profile
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/// </summary>
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API_FIELD(Attributes="EditorOrder(212), DefaultValue(false), EditorDisplay(\"IES Profile\", \"Use IES Brightness\")")
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bool UseIESBrightness = false;
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/// <summary>
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/// Global scale for IES brightness contribution
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/// </summary>
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API_FIELD(Attributes="EditorOrder(213), DefaultValue(1.0f), Limit(0, 10000, 0.01f), EditorDisplay(\"IES Profile\", \"Brightness Scale\")")
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float IESBrightnessScale = 1.0f;
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public:
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/// <summary>
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/// Computes light brightness value.
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/// </summary>
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float ComputeBrightness() const;
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/// <summary>
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/// Gets scaled light radius
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/// </summary>
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float GetScaledRadius() const;
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/// <summary>
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/// Gets light radius
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/// </summary>
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API_PROPERTY(Attributes="EditorOrder(1), DefaultValue(1000.0f), EditorDisplay(\"Light\"), Limit(0, 100000, 0.1f)")
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FORCE_INLINE float GetRadius() const
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{
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return _radius;
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}
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/// <summary>
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/// Sets light radius
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/// </summary>
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/// <param name="value">The new value</param>
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API_PROPERTY() void SetRadius(float value);
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private:
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void UpdateBounds();
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public:
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// [LightWithShadow]
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void Draw(RenderContext& renderContext) override;
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#if USE_EDITOR
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void OnDebugDraw() override;
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void OnDebugDrawSelected() override;
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void DrawLightsDebug(RenderView& view) override;
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#endif
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void OnLayerChanged() override;
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void Serialize(SerializeStream& stream, const void* otherObj) override;
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void Deserialize(DeserializeStream& stream, ISerializeModifier* modifier) override;
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bool IntersectsItself(const Ray& ray, Real& distance, Vector3& normal) override;
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protected:
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// [LightWithShadow]
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void OnTransformChanged() override;
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};
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