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Shapeways: Bring your creativity to life in 3DMeshLab: Render obj file with my own computed normals
http://www.shapeways.com/forum/index.php?t=rview&goto=29886&th=5671#msg_29886
I am not sure how I can visualize the normals that I computed/wrote to file. I want to apply Meshlab shader later based on my computed normals.
To test this I created a test obj file-
vn 0.517350 0.517350 0.517350
v 0.500000 0.500000 0.500000
vn -0.333333 0.666667 0.666667
v -0.500000 0.500000 0.500000
vn 0.666667 -0.333333 0.666667
v 0.500000 -0.500000 0.500000
vn -0.666667 -0.666667 0.333333
v -0.500000 -0.500000 0.500000
f 1//1 2//2 3//3
f 4//4 3//3 2//2
This is just one square. Now if I change the normal values in this file, it still shows its own vertex normals when I select 'Render->Show vertex normals'.
How can I have my own normals and apply shader that works on my computed normals?? Please help.