Le_Forgeron <jgr### [at] freefr> wrote:

> Sorry to disappoint you,

Not at all - very interesting and great to learn and get a link.

Of course, while we're on the topic, can we address .hf ?
I tried Vector.hf and POV-Ray was sad and made the Founding Coders cry.
Does this need an include file of some sort to work?

Note: The .hf operator is experimental and will generate a warning.
fn_Pigm( ).gray to get the gray value of the color vector
gray value = Red*29.7% + Green*58.9% + Blue*11.4%

fn_Pigm( ).hf to get the height_field value of the color vector
hf value = (Red + Green/255)*0.996093

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