[x3d-public] Projective Texture Mapping PTM node definitions

[Don Brutzman]

Found that the PTM nodes had never been put into X3D XML Schema, DOCTYPE or X3DUOM, etc. etc.  Working to remedy that.

[1] 42  Projective Texture Mapping (PTM) Component
     https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-WD2/Part01/components/ProjectiveTextureMapping.html

Suggest following changes in nodes below:

a. modify farDistance, nearDistance to have bounds of [0,∞)

b. farDistance default of 10m seems like a good value if used in virtual rooms. nevertheless might consider longer default value for farDistance, perhaps 100 (meters) to reduce potential for future author puzzlement.

Anything else?

=============================
42.3.1 X3DTextureProjectorNode

X3DTextureProjectorNode : X3DChildNode {
   SFString [in,out] description  ""
   SFVec3f  [in,out] direction    0 0 1  (-∞,∞)
   SFFloat  [in,out] farDistance  10
   SFBool   [in,out] global       TRUE
   SFVec3f  [in,out] location     0 0 0  (-∞,∞)
   SFNode   [in,out] metadata     NULL   [X3DMetadataObject]
   SFFloat  [in,out] nearDistance 1
   SFBool   [in,out] on           TRUE
   SFNode   [in,out] texture      NULL   [X3DTexture2DNode]
   SFFloat  [out]    aspectRatio         (0,∞)
}
=============================
42.4.1 TextureProjectorParallel

TextureProjectorParallel : X3DTextureProjectorNode {
   SFString [in,out] description  ""
   SFVec3f  [in,out] direction    0 0 1     (-∞,∞)
   SFFloat  [in,out] farDistance  10
   SFVec4f  [in,out] fieldOfView  -1 -1 1 1 (-∞,∞)
   SFBool   [in,out] global       TRUE
   SFVec3f  [in,out] location     0 0 0     (-∞,∞)
   SFNode   [in,out] metadata     NULL      [X3DMetadataObject]
   SFFloat  [in,out] nearDistance 1
   SFBool   [in,out] on           TRUE
   SFNode   [in,out] texture      NULL      [X3DTexture2DNode]
   SFFloat  [out]    aspectRatio            (0,∞)
}
=============================
42.4.2 TextureProjectorPerspective

TextureProjectorPerspective : X3DTextureProjectorNode {
   SFString [in,out] description  ""
   SFVec3f  [in,out] direction    0 0 1  (-∞,∞)
   SFFloat  [in,out] farDistance  10
   SFFloat  [in,out] fieldOfView  π/4 (0,π)
   SFBool   [in,out] global       TRUE
   SFVec3f  [in,out] location     0 0 0  (-∞,∞)
   SFNode   [in,out] metadata     NULL   [X3DMetadataObject]
   SFFloat  [in,out] nearDistance 1
   SFBool   [in,out] on           TRUE
   SFNode   [in,out] texture      NULL   [X3DTexture2DNode]
   SFVec3f  [in,out] upVector    0 0 1
   SFFloat  [out]    aspectRatio         (0,∞)
}
=============================

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