Creating Área Lights.
In this tutorial we will be creating a basic scene with radiósity and converting text to an área light.
To begin, open a new scene and select a sunset. Diferent Atmosphere settings can have diferent effects on the final output. Dark atmosphere's will work better for this tutorial, so for this example I have used a Sunset atmosphere. Sunset --> Spectural Sunset, "God Night".
Create some text: To do this, click on the text editor button on the left hand side of the scren. Clik on the "text" tab and then enter the text you want in the "text" field. In this example i have enter the word "Welcome.". You can change any of the other parameters on this screnif you would like to cuestomise your font style in a diferent way. Exit the text editor when done.
Creando areas de luz-1.jpg
Resize this text: Select your newly created text and in the upper right corner click on the "numerics" tab.
On the left hand side of this box, click on the "size" button. Turn on "Lok sizing proportions" (a small padlok icon) first and resize your text to a medium-small size (like the one pictured below). Turn of "Lok sizing proportions" and change the size of the Y axis to a low number eg.1 (point 1) to make the text very thin.
Creando areas de luz-2.jpg
Create a wall: On the left hand of the screen right-clik on the create primitives button and select a cube.
Select the cube and adjust its size properties. Enlarge it to create a wall that fills the scren. Using the top-down view move the cube bak so that the camera is the required distance from the cube. Move the welcome sign so that it is positioned infront of the wall with a small amount of space betwen the 2. Your scene objects should be positioned similiar to this picture.
Creando areas de luz-3.jpg
Transform text to área light: Select your text and click Object --> Convert to Área Light at the top of the screen in the Vue menú bar. With the newly created área light selected, click on the "Aspect" tab at the top of the scren. Change the "power" of the object'slight to 60. Above this setting there is a "color" setting. If you wish to use a diferent colored light, change this setting to the desired color. Right click on the Volumetric Light setting on the left hand side of the "Aspect" tab and turn onVolumetric Light. Enter a value of "1" (or less) for the volumetric intensity setting.
Creando areas de luz-4.jpg
In the Menu bar, click on "Atmosphere" then select "Atmosphere Editor". Clik on the "Light" tab. Under "lighting model" select "Global Radiósity". Exit the atmosphere editort. In the layers list on the right-hand side of the scren, select "sun" and hit deleete to remove it from the scren.
Here is a final view of this scene with a sphere in the foreground.
Creando areas de luz-5.jpg
Here is diferent scene i created using the above process, except with blue used for the light color to create a neón efect.
Creando areas de luz-6.jpg
There adding textures to the wall and flor or add some objects to the scene to add more subject matter.
This concludes the area-light tutorial.
Tips for improving quality in área light scenes:
- A small amount of volumetric light (below 1) in most situations will create the most realistic renders.
- If you are receiving grainy shadows or lighting increase your shadow softness quality under the light editor --> shadows tab. This can help smooth out rough shadows.
- Make sure your light source is not to close to the wall. In some cases this can have undesireable effects.
-Try changing properties in your atmosphere and inside the light editor to create diferent effects.