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From: Marco Patzer <lists@homerow.info>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Shading to transparent using withshademethod
Date: Wed, 27 Jan 2016 22:05:32 +0100	[thread overview]
Message-ID: <20160127220532.6a017853@homerow> (raw)

Hi,

some months ago the withshading, withfromshadecolor etc. have apparently been
replaced by the more general withshademethod, withshadevector,
withshadecolors, etc. methods.

I have issues converting the old withshading code to the withshademethod
version. The old code had no problems shading to transparent:

\definecolor [trans] [a=multiply, t=.5, s=.5]
\starttext
\startMPcode
  path p; p:=fullsquare xyscaled (8cm, 8cm);
  fill p
    withshading("linear", ulcorner p, llcorner p)
    withfromshadecolor \MPcolor{black}
    withtoshadecolor   \MPcolor{trans};
\stopMPcode
\stoptext

The new code appears to work in general, but only if no shading to
transparent is being used:

\definecolor [trans] [a=multiply, t=.5, s=.5]
\starttext
  \startMPcode
    % works
    fill fullcircle scaled 10cm withcolor \MPcolor{trans};

    fill fullsquare xyscaled (15cm, 15cm)
      withshademethod "linear"
      withshadevector (0,1)
      % works
      withshadecolors (red,\MPcolor{blue})
      % fails
      %% withshadecolors (red,\MPcolor{trans})
      ;
  \stopMPcode
\stoptext

How to make transparent shadings work with the new mechanism?

Marco
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             reply	other threads:[~2016-01-27 21:05 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-01-27 21:05 Marco Patzer [this message]
2016-01-28  8:43 ` Hans Hagen
2016-01-28 10:45   ` Marco Patzer
2016-01-28 11:33     ` Hans Hagen
2016-01-28 12:53       ` Marco Patzer
2016-01-28 13:45         ` Hans Hagen
2016-01-28 14:34           ` Marco Patzer
2016-01-28 17:26             ` Hans Hagen
2016-01-28 18:09               ` Marco Patzer
2016-01-28 11:29   ` Hans Hagen
2016-01-28 13:02     ` Marco Patzer
2016-01-28 15:16       ` Hans Hagen

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