[Therion] Can't change default l_wall style with metapost

[Paul Rowe]

Thanks, that's exactly what I needed.

Is that approach the case for any point/line/area that has subtypes? i.e.
You have to override the default subtype.

Paul

On Wed, 26 Jul 2023 at 07:01, Martin Budaj <m.budaj at gmail.com> wrote:

> Hi,
>
> define l_wall_bedrock instead of l_wall
>
> M.
>
> On Tue, Jul 25, 2023 at 2:03 AM Paul Rowe <armchair.caver.nz at gmail.com>
> wrote:
>
>> Hi,
>> I have changed wall subtypes before in my layout. e.g. Using Bruce
>> Mutton's
>>
>> code metapost
>> def l_wall_unsurveyed (expr P) =
>>   T:=identity;
>>   pickup PenC;
>>   thdraw P dashed evenly scaled (2*optical_zoom);
>> enddef;
>> endcode
>>
>> However, I can't get this working on the default l_wall type. Any
>> changes, including using the same style as in the above l_wall_unsurveyed
>> example get ignored. e.g.
>> code metapost
>> def l_wall (expr P) =
>>   T:=identity;
>>   pickup PenC;
>>   thdraw P dashed evenly scaled (2*optical_zoom);
>> enddef;
>> endcode
>>
>> I'm not sure what I'm missing. I'm first trying to prove I can override
>> this, and then working on a wall style with a shadow or external
>> cross-hatching.
>>
>> Thanks,
>> Paul
>>
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