CGTalk - Referencing a `normal` array element? (3Delight/SL)

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kungfuelmosan

09-15-2007, 12:03 PM

I just went to compile my shader (3Delight 6.5) and im getting errors
for trying to get an array element from a normal variable? I just
compiled the same shader at work with same version of 3Delight
yesterday morning and it worked fine?

normal NN = normalize(N);
color CN = color( NN[0], NN[1], depth(P) );

returns:

ERROR: variable 'NN' is not an array

that should work right?

Thanks in advance

1armedScissor

09-15-2007, 03:12 PM

I'm going to guess that the "normal" struct isn't an array, but rather a vector. Try finding the header file where the normal struct is defined & it will show you exactly how to access the individual elements.

cheers

rendermaniac

09-15-2007, 05:12 PM

You probably want this:

normal NN = normalize(N);
color CN = color( xcomp(NN), ycomp(NN), depth(P) );

I know prman you can reference vector components as if it was an array. This was added very recently. I don't know if 3delight supports this or not.

It is probably worth posting on the 3dlight forum too:
http://www.3delight.com/en/modules/PunBB/viewforum.php?id=5

Simon

Mauritius

09-20-2007, 01:57 AM

I know prman you can reference vector components as if it was an array. This was added very recently. I don't know if 3delight supports this or not.
It does. But not the 6.5 public release. If you're a customer, you can get access to intermediate versions. Otherwise wait for 3Delight 7.0 whiich is due very soon. :)

.mm

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