User`s Manual
Contents
1. multiplied by the light s own Intensity value Shadow Darkness The reach is affected multiplied by the light s Shadow Darkness value Shadow Diffusion The reach is affected additive by the light s Shadow Diffusion value Example There are three spot lights in a scene the red has intensity 100 the blue has 200 and the green 400 If the Reach control is set to 100 and Individual Reach is set to In tensity then the red spot light will have a reach of 100 the blue 200 and the green 400 11 Reach Comp Layer not Active One side stops the light Reach Comp Layer Active The other side starts the light Reach Comp Layer When Reach Comp Layer is activated a 3D layer can be se lected in the layer pop up below The spot light cones will then reach that particular 3D layer Set Reach Layer When a layer is selected in this pop up menu all spot light cones will be set up to reach that particular layer As soon as the layer has been selected the pop up will flip back to its original state None and a new light called Lux Reach layer name will be created This is a locked light you are not sup posed to edit it it s just there to keep track of the reach layer The layer selected here must be a 3D layer otherwise it will have no effect This control only works when Reach Comp Layer above is checked Reach Both Sides All layers have two sides Normally Lux doesn t care which side2. s Intensity check box controls if the intensity values from the lights should be used It is on by default but can be switched off when desired that all spot light cones have the same intensity regardless of their own intensity setting Intensity This slider acts as a master slider for all spot lights intensities By increasing this value all spot lights will be visualized with more intensity by Lux It however has no effect on the lights own intensity values only on how they are rendered by Lux The image on the left shows how a light using the Natural Spot Light Model is affected Notice how the lit area on the layer below the floor remains unchanged In order to also affect the lit area the light s own intensity value should be changed instead Short Start Distance Short Reach Long Start Distance Long Reach Start Distance The Start Distance is the distance from the light to where the light cone starts Reach The Reach slider control how far the light cone reaches This setting is only active if Reach Comp Layer is not checked 10 Individual Reach The Individual Reach pop up menu only works if Reach Comp Layer is not checked Sometimes it is desired to give the spot lights representations individual reach length This pop up gives four choices on how the length of the individual lights should can be affected None All lights have the same reach Intensity The reach is affected
3. Y Rotation 4 2 Rotation F w Options Intensity Color Cone Angle Cone Feather Casts Shadows Shadow Darkness Shadow Diffusion Spot Lights F a a CH H H H T Spot Light Model Light s Intensity Intensity Start Distance Reach Individual Reach Reach Comp Layer Distance Y Active Mone Spot Lights Spot lights in After Effects are points in 3D space that emit light in a certain direction and with a certain spread cone angle Lux uses six of the properties of the point light to ren der its representation they are position direction color cone angle cone feather and intensity The image on the left shows After Effects properties for a spot light The setting called ntensity 1s in this document some times referred to as the ight s own intensity In Lux there are controls for how spot light cones are ren dered The functionality of the controls are described on the following pages Natural Low Distance Medium Constant High Spot Light Model The Spot Light Model controls what type of visualization 1s used the look of spot light cones There are four settings Off No visualization of spot lights Natural Light falls off with distance squared 1 R2 This is the most physically correct model Distance Light falls off with distance 1 R Constant Constant light intensity Light s Intensity The Light
4. faces the light it will still get stopped by the reach layer anyway But if this option is unchecked then only one side of the layer will be able to stop cut off the light cone the other side will do the inverse start the light cone The image on the left shows what happens when Reach Both Sides is off and the reach layer is rotated so that the other side faces the light 12 zz General Use Lights that are e Name starts with e A Look General The settings in the general group affects both point and spot lights Use Lights that are The setting allows for using only lights that are switched on or only lights that are off or to use all lights regardless of 1f they are switched on or off Name starts with Using this option Lux will only visualize the lights that have names that start with a certain word This gives flexibility to add many lights to light the scene but only let a few of those be rendered by Lux It also helps when it is desired to have lights behind and in front of some layers In this case two instances of Lux are used One is placed on top of the layer stack and another at the bottom then this pop up can be used to control which lights are rendered in what Lux layer Anything All lights are rendered Lux Only lights whose name starts with Lux are rendered Front Only lights whose name starts with Front Back Only lights whose name starts with Back Important no
5. TRrIPCOWe LUX User s Manual Contents Quick Start Introduction License keys Point Lights Point Light Model Light s Intensity Intensity Softness Radius Individual Radius Source Intensity Source Radius Trapcode 2003 All rights reserved INADA A Spot Lights Spot Light Model Light s Intensity Intensity Start Distance Reach Individual Reach Reach Comp Layer Set Reach Layer Reach Both Sides General Use Lights that are Name starts with Look Gamma ooy 10 I 12 12 12 13 13 13 14 14 7 OOS Effect Favorites Point Lights Point Light Model Light s Intensity nf Use Quick Start Create a new composition Then create a camera and a spot light Then create a composition sized solid and apply Trapcode Lux You will right away see Lux rendering the light cone of the spotlight Try and orbit the camera press c on the keyboard around the light to see it from all directions Introduction Adobe After Effects produces wonderful lighting and shadows on layers but what about the actual lights The lights them selves are not visualized in any manner by After Effects That is where Lux comes in handy Trapcode Lux renders represen tations of all point and spot lights in a scene Just apply it to a composition sized 2D solid and it will automatically get the po sition color and all other properties of all point and spot lights and render visual repres
6. controls are Point Light Model The Point Light Model controls what type of visualization is used the look of point lights There are five settings Off No visualization of point lights Natural Light falls off with distance squared 1 R2 This is the most physically correct model Radius Constant light up to a certain radius It has the look of a volumetric sphere Radius Source Like above but adds a smaller sphere in the center Source Only the smaller center sphere Medium High Medium High Light s Intensity The Light s Intensity check box controls if the intensity values from the lights should be used It is on by default but can be switched off when desired that all point lights look the same regardless of their individual intensity setting Cd nternssity This slider acts as a master slider for all point lights intensi ties By increasing this value all point lights will be visualized with more intensity by Lux It however has no effect on the lights own intensity values only on how they are rendered by Lux The top row in the image on the left shows how a light using the Natural Point Light Model is affected The bottom row shows a light using the Radius model Softness The Softness slider sets the softness of the visualization The top row in the image on the left shows how a light using the Natural Point Light Model is affected The bottom row shows a light using the Radius model Radi
7. entations of them Lux can even be set up so the spot lights reach a certain 3D layer in the composition to make the on stage spotlight effect look very realistic This manual will describe in high detail all the controls in Lux It should be used as a reference when working with the plug in For more hands on training material there are tutorials at the Trapcode web site License keys Trapcode Lux is distributed as an unlockable demo It is fully functional but will render a red cross over the frame At any time a license key can be purchased and fed into the plug in by clicking Options When a valid name amp key pair is entered the red cross will disappear License keys can be purchased at the Trapcode web site lt E i g Light 1 lt Transform Position F Options e Intensity e Color Casts Shadows Shadow Darkness Shadow Diffusion Point Lights Point Light Model Light s Intensity gt 5 Intensity t Softness 38 gt amp Radius e Individual Radius b amp Source Intensity b amp Source Radius Natural RadiustSource af Use Radius Source Point Lights Point lights in After Effects are points in 3D space that emit light uniformly in all directions Lux uses three of the prop erties of the point light to render its representation they are position color and intensity In Lux there are controls for how point lights are rendered The
8. te Changing the name of a light does not force After Effects to re render This must be done manually by for example purging the image cache or switching the Lux layer off and then back on 13 Weak Natural Linear Strong Look This setting controls how lights are mixed together and the overall brightness and look of the result There are six modes for Look Weak An overall weak look Linear A normal look with bright areas in the overlaps between lights Natural A normal look with natural looking overlaps between lights Strong An overall bright look Adjustable Linear An adjustable look with bright areas in the overlaps between lights Adjustable Natural An adjustable look with natural looking overlaps between lights Gamma The two last Look modes the adjustable modes enables this gamma slider that allows for adjusting the overall brightness and look 14
9. us The Radius slider only works when Point Light Model 1s set to Radius or Radius Source It controls the size of the spheres Individual Radius The Individual Radius pop up menu only works when Point Light Model is set to Radius or Radiust Source Sometimes it is desired to give the point lights representations individual size This pop up gives four choices on how the radius of the individual lights should can be affected None All lights have the same radius Intensity The radius is affected multiplied by the light s Intensity value Shadow Darkness The radius is affected multiplied by the light s Shadow Darkness value Shadow Diffusion The radius is affected additive by the light s Shadow Diffusion value Example There are three lights in a scene the first has inten sity 100 the second has 200 and the third 400 If the Radius control is set to 100 and Individual Radius is set to Intensity then the first point light will have a radius of 100 the second 200 and the third 400 Source Intensity The Source Intensity slider only works when Point Light Mod el is set to Source or Radius Source It controls the intensity of the inner spheres Source Radius The Source Radius slider only works when Point Light Model is set to Source or Radius Source It controls the size of the inner spheres lt E 2 Y Light 2 v Transform Point of Interest Position Orientation amp Rotation Oy
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