[Radiance-general] Textures: perturbations in x,y,z normals

[Martin Moeck]

void texfunc id1
   3  Px*A1  Py*A2  PZ*A3  
   0
   3 A1 A2 A3

id1 texfunc id2

5  Px*A1  Py*A2  PZ*A3  -s .1
   0
   3 A1 A2 A3

Just mix two textures. The second texture is ten times smaller and superimposed on the first one, I believe - let me know if it does not work

Martin Moeck



________________________________

From: radiance-general-bounces at radiance-online.org on behalf of alira at gsd.harvard.edu
Sent: Mon 4/24/2006 3:17 PM
To: radiance-general at radiance-online.org
Subject: [Radiance-general] Textures: perturbations in x,y,z normals




Hi all,

   I want to experiment with the texture of the materials by modifying the
x, y and/or z normals of the surfaces in order to see how the reflected
light changes in its characteristics. However, when I modify the
normals, using texfunc as the following example, apparently, just the
main normal is modified.

   void texfunc id
   3 Px*A1  Py*A2  PZ*A3
   0
   3 A1 A2 A3


   Does anyone have any suggestions on how I can make a "grid of normals"
in order to modify the normals of smaller regions of the surface? and
how can I change the scale of that "grid"?
Thanks in advance,

Adriana Lira
Master in Design Studies, 2003
Candidate for Doctor in Design Studies
Harvard Graduate School of Design


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