Tuesday 23 October 2012

Lighting

Method 1: select material from "arch and design", select "self illumination", change intensity, select "illuminate the scene." Colour of light can be changed.

Method 2: Artificial lighting: select photometric target light, place in model. Shadows can be turned on.

IES files can be used for superior artificial lighting.
To use IES file, change light distribution. Uniform spherical is default for photometric.
Select photometric web > choose photometric file, select and load IES file, and render. Intensity can be changed. http://bim.wikispaces.com/file/view/Creating+a+Light+with+a+photometric+web+using+an+ies+file.pdf

For downlight model (light washing over wall), model a small sphere, place it on top of photometric light, and apply the self illuminating material to it. To duplicate: press shift > drag with mouse > select instance.

Shadow types: raytracing/advanced raytracing is very accurate but takes longer time to render.
                       shadowmap/mentalray shadowmap is less accurate, but saves time.

Note: Configure > lighting and shadows > enable hardware shading, enable shadows.

To achieve glowing effect, render tab, scroll to camera effects select glare shader, drag and drop to an empty material slot, select instance.

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