[x3d-public] comments on Projective texture mapping: near/far naming, textureTransform

[Don Brutzman]

Comments on

42  Projective texture mapping component
https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-WD2/Part01/components/ProjectiveTextureMapping.html

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1. the SFFloat nearDistance and farDistance fields are very similar (perhaps identical) to nearClippingPlane and farClippingPlane in

23.3.1 X3DViewpointNode
https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-WD2/Part01/components/navigation.html#X3DViewpointNode

Any reason why we shouldn't use the same name?

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2. Why don't the TextureProjector (Parallel/Perspective) nodes include a textureTransform field?  It can be applied to the texture field just as in Appearance textureTransform field

* 12.4.2 Appearance
   https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-WD2/Part01/components/shape.html#Appearance

   SFNode [in,out] texture            NULL [X3DTextureNode]
   SFNode [in,out] textureTransform   NULL [X3DTextureTransformNode]

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all the best, Don
-- 
Don Brutzman  Naval Postgraduate School, Code USW/Br       brutzman at nps.edu
Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA   +1.831.656.2149
X3D graphics, virtual worlds, navy robotics http://faculty.nps.edu/brutzman