Le_Forgeron <jgr### [at] freefr> wrote:
> Le 15/11/2018 à 18:08, Le_Forgeron a écrit :
> > Le 14/11/2018 à 11:05, And a écrit :
> >> In my imagine there is another function traceUvMap(start_point, direction)
> >> return the uv-map <u, v>
> >
> > Objections, my dear:
> > 1. usual SDL is lowercase, and words are separated with underscore, not
> > Camel syntax (as Uppercase is reserved to users)
> >
> > 2. trace() requires an object, as the whole scene is not yet available,
> > and you might trace to defined but not present in scene object
> >
> > So it would rather looks like
> > trace_uv_map( object, start_point, direction)
> >




> >
> And it's a kind of 5 minutes patch, see at;
> https://github.com/LeForgeron/povray/tree/feature/traceUvMap
>

Sorry, how to use...

I mean github



> demo to get output:
> UV : <0.000, 1.000>
>
> with
>
> ======================
>
> #version 3.8;
> global_settings{ assumed_gamma 1.0 }
>
> #declare Object = sphere { 0, 1 }
>
> #declare Start = <0,4,0>;
> #declare Dir = -Start;
>
> #declare UV= trace_uv_map( Object, Start, Dir );
>
> #debug concat("UV : <", vstr(2, UV, ", ", 0, 3 ), ">\n")
>
>
> ======================
>
> Now, let's fight about trace_uv_map or any better spelling or wording.

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