How can I make FilledCurve smoother?

Question

In How can I generate and randomly assign color to annular sectors? J.M. showed an interesting way to create a sector graphic using FilledCurve. Unfortunately it was marred by an inferior rendering resulting in a faceted appearance when the concentric rings should be smooth:

faceted

How can we fix this?

Community · Accepted Answer · 2017-04-13 12:56:06Z

14

Fortunately there is a solution but it appears to be undocumented and takes a bit of guess work.

The magic is:

FilledCurveBoxOptions -> {Method -> {"SplinePoints" -> (* integer value *)}}

This may be set globally or for a Notebook:

SetOptions[InputNotebook[], FilledCurveBoxOptions -> {Method -> {"SplinePoints" -> 30}}]

(Use $FrontEnd in place of InputNotebook[] for persistent global setting.)

By using BaseStyle it may also be set directly in Graphics or with Show:

sec = (* J.M.'s sector graphic *)

Show[sec,
 BaseStyle -> FilledCurveBoxOptions -> {Method -> {"SplinePoints" -> 30}}, 
 ImageSize -> 800]

enter image description here

Style also works but the syntax highlighter will complain of an unknown option:

Style[sec, FilledCurveBoxOptions -> {Method -> {"SplinePoints" -> 30}}]

CommunityBot

1

answered May 24, 2015 at 11:06

Mr.Wizard

273k34 gold badges595 silver badges1.4k bronze badges

$\begingroup$ (out of votes again) Could you edit my answer there and insert the appropriate changes, please? Thanks! $\endgroup$
– J. M.'s missing motivation ♦
Commented May 24, 2015 at 11:09
$\begingroup$ @J.M. Gladly. :-) $\endgroup$
– Mr.Wizard
Commented May 24, 2015 at 11:11

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