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A '''corona''' is created by making a light that has a skin associated with it.  It is often erroneously called [[Legacy:Lens Flare|lens flare]]. To see a corona through a [[Legacy:Static Mesh|Static Mesh]] change Collision>bBlockZeroExtentTraces to false.

==UT==

Here are the steps for making a corona in [[Legacy:UT|UT]]:

# Place a [[Legacy:Light (UT)|Light (UT)]] wherever you want the corona to appear.

# Open the [[Legacy:Texture Browser|Texture Browser]] and select a corona texture.  There are some nice ones in GenFX and City.

# Open the [[Legacy:Actor Properties|Actor Properties]] for the light. Set the following properties:

{|

|-
|'''Group'''
|'''Property'''
|'''Value'''
|'''Explanation''' 
|-
|Display
|Skin
|
|Click ''Use'' to give your light the texture you just picked out.
|-
|Display
|DrawScale
| style="text-align: center" |0.1...0.3
|Scales the corona image; with 1.0 it's rather large. One unfortunate consequence of this is that this property also scales the actor icon in UnrealEd, making corona actors hard to find.
|-
|LightColor
|Brightness
| style="text-align: center" |0.0
|Set so that your corona won't also cast light. You'll need to use a second light for that. 
|-
|LightColor
|LightHue
|
|Set a colour for your corona (if you are using a white skin that is, if you have a colored one then just leave it).
|-
|Lighting
|bCorona
| style="text-align: center" |True
|bLensFlare was used with Unreal1 and is obsolete in UnrealTournament.
|-
|Lighting
|LightRadius
|Anything
|sets how far the corona will be visible in game
|}

The map must be [[Legacy:Build|rebuilt]] (including geometry) to see the effect.

==UT 2004==

Here are the steps for making a corona in [[Legacy:UT2004|UT2004]]:

This is probably the same in UT2003

# Place a [[Legacy:Light|Light]] wherever you want the corona to appear.

# Open the [[Legacy:Texture Browser|Texture Browser]] and select a corona texture.  There are some in "EmitterTextures.Flares" and "EpicParticles.Flares".

# Open the [[Legacy:Actor Properties|Actor Properties]] for the light. [[Legacy:Set The Following Properties|Set the following properties]]:

{|

|-
|'''Group'''
|'''Property'''
|'''Value'''
|'''Explanation''' 
|-
|Display
|Skin
|
|Click ''Use'' to give your light the texture you just picked out.
|-
|Display
|DrawScale
| style="text-align: center" |0.1...0.3
|Scales the corona image; with 1.0 it's rather large. One unfortunate consequence of this is that this property also scales the actor icon in UnrealEd, making corona actors hard to find.
|-
|LightColor
|Brightness
| style="text-align: center" |0.0
|Set so that your corona won't also cast light. You'll need to use a second light for that. 
|-
|LightColor
|LightHue
|
|Set a colour for your corona (if you are using a white skin that is, if you have a colored one then just leave it).
|-
|Lighting
|bCorona
| style="text-align: center" |True
|bLensFlare was used with Unreal1 and is obsolete in UnrealTournament.
|-
|Lighting
|LightRadius
|anything
|sets how far the corona will be visible in game
|}

The map must be [[Legacy:Build|rebuilt]] (including geometry) to see the effect.

==Other Properties==

'''Other Corona properties you might be interested in.'''

{|

|-
|'''Group'''
|'''Property'''
|'''Value Type'''
|'''Explanation'''
|-
|Lighting
|bDirectionalCorona (UT2k4)
|Bool
|Activates/Deactivates Directional Coronas 
|-
|Corona
|CoronaRotation (UT2k4)
|Float
|If bDirectionalCorona True, will set the corona's rotation 
|-
|Corona
|CoronaRotationOffset (UT2k4)
|Float
|...???... 
|-
|Corona
|MaxCoronaSize
|Float
|The maximum size the corona can achieve 
|-
|Corona
|MinCoronaSize
|Float
|The minimum size the corona must achieve 
|-
|Corona
|UseOwnFinalBlend
|Bool
|...???... 
|-
|Display
|ScaleGlow
|Float
|Rate of fadein/out 
|}

===Caveats===
* Coronas can only be seen through masked [[Legacy:Semisolid|semisolid]] or [[Legacy:Nonsolid|nonsolid]] brush.
* A corona textured light can also be used as a light emitting source, but  the corona will only be seen in game as far as the radius is set.
* To make a small radius light seen from afar, use 2 lights.  Set the corona textured light actor brightness -> 0.

==Viewing Coronas in UnrealEd==

''(Could someone confirm which rendering modes display them in UnrealEd?)''
# Type <tt>camera open</tt> into the [[Legacy:UnrealEd Console|UnrealEd Console]]
# Maximize the floating viewport 
# The viewort should use accelerated rendering and show lens flares. 
# Press <tt>Alt+Tab</tt> to return to UnrealEd.

===Caveats===

'''Birelli:''' Software rendering in UED does ''not'' display coronas as D3D does. As for looking at it in the editor I always just right-click the top bar of my 3-D viewport and go down to D3D, I'm not sure what this camera open thing does though, maybe it's better

'''Tarquin:'''  "Camera Open" opens a floating viewport you can maximize to the entire screen. It's good for people with a dinosauresque 2-card setup who can only run OpenGL fullscreen (like me)

'''Generic Badass:''' Go into advanced properties, rendering, software rendering, coronas = true. then you can see coronas in software mode in UT and UnrealEd.

==Comments==

'''Tarquin:''' Do we need to update this for UT2003?

'''MythOpus:''' I think So.  Unfornately, I haven't mapping lately to see whats changed...

'''SirKline:''' That worked for me in UT2004. Hope, its clear now.

'''SuperApe:''' Does anyone know about a limit on the number of visible coronas in UT2003? (A friend is saying he can't see more than 64)

'''MythOpus:''' The properties of a light now have added options.  One of them is ' Coronas '.  In this list you can choose the min. distance and max distance of the corona as well as the Size of it.

==Related Topics ==
* [[Legacy:Lighting|Lighting]] topic page
* [[Legacy:Light (UT)|Light (UT)]] class reference
* [[Legacy:Actor (UT)/Lighting|Actor (UT)/Lighting]] &ndash; Reference page for Lighting and LightColor properties

[[Category:Legacy Mapping|{{PAGENAME}}]]
Return to Legacy:Corona.
Retrieved from "http://wiki.beyondunreal.com/Legacy:Corona"
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