Material Definitions

1
Material Definitions

• Plastic is a material with uncolored highlights.
  It is defined by a red green and blue reflectance
  value, a specularity value and by a roughness
  value. A positive roughness value will display
  highlights (uncolored by the materials modifier)
  but not show any reflections from other objects.
• The plastic primitive
• modifier plastic identifier
• 0
• 0
• 5 R G B spec rough
• Example
• void plastic gloss_white_paint
• 0
• 0
• 5 1 1 1 .03 .01

2
Plastic Acceptable values

• color 01,01,01
• Min 0, Max 1
• black - white
• specularity 01
• Min 0, Sug. Max 0.07
• matte - satin
• roughness 01
• Min 0, Sug. Max 0.02
• polished - low gloss

3
(No Transcript)
4
Material Definitions

• The metal material is similar to plastic except
  that its highlights are modified by the material
  color.
• The plastic primitive
• modifier metal identifier
• 0
• 0
• 5 R G B spec rough
• Example
• void metal brass
• 0
• 0
• 5 .68 .27 .002 .95 0

5
Metal Acceptable values

• colour 01,01,01 Min 0, Max 1
• 0-100 reflectance
• specularity 01 Sug Min
• 0.5, Max 1
• dirty - clean
• roughness 01 Min 0,
• Sug Max 0.5
• polished - roughened

6
(No Transcript)
7
Trans

• The trans material is basically a translucent
  plastic. It takes the same parameters as plastic
  as well as transmission factor and a transmitted
  specularity value. The transmission factor is the
  fraction of penetrating light that travels
  through the material. The fraction of transmitted
  light that is not
• diffusely scattered is the specular transmitted
  value. This material is infinitely thin and will
  modify the colour of the scattered light.
• The trans primitive
• modifier trans identifier
• 0
• 0
• 7 R G B spec rough trans tspec
• Color specularity roughness transmission
  transmitted specularity)
• void trans translucent Translucent_Skylight
• 0
• 0
• 7 1 1 1 0 0 0.5 0.2