From: Mojca Miklavec <mojca.miklavec.lists@gmail.com>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Cc: Christian Feuersaenger <ludewich@users.sourceforge.net>
Subject: Re: TikZ and wrong drawing order
Date: Sun, 14 Jun 2015 23:26:11 +0200 [thread overview]
Message-ID: <CALBOmsZUyiGwW-WyGp7RVtmXd2C25HkdGcPf8y_CsKYrUsQnNA@mail.gmail.com> (raw)
In-Reply-To: <557A0F8F.9000403@wxs.nl>
On Fri, Jun 12, 2015 at 12:45 AM, Hans Hagen wrote:
>
> Most shades look ugly and useless to me anyway but you have more control
> than you think (always had but nicer interfaced in mpiv):
>
> \startMPpage
> fill fullcircle scaled 10cm
> withshademethod "circular"
> withshadevector (5cm,1cm)
> withshadecenter (.1,.5)
> withshadedomain (.2,.6)
> withshadefactor 1.2
> withshadecolors (red,green)
> ;
> \stopMPage
Great, I love the new syntax (compared to the MKII "ugliness" of shadings).
But how does one declare more than one colour? In particular, how
would you do the following in MP?
\usemodule
[tikz]
\pgfdeclareverticalshading{rainbow}{100bp}{
color(0bp)=(red);
color(25bp)=(red);
color(35bp)=(yellow);
color(45bp)=(green);
color(55bp)=(cyan);
color(65bp)=(blue);
color(75bp)=(violet);
color(100bp)=(violet)}
\starttext
\starttikzpicture[shading=rainbow]
\shade[shading angle=90] (0,0) rectangle +(10,1);
\stoptikzpicture
\stoptext
> Of course you need to play with the values as there is no 'best'
> combination.
This is how TikZ defines the ball:
\pgfdeclareradialshading[tikz@ball]{ball}{\pgfqpoint{-10bp}{10bp}}{%
color(0bp)=(tikz@ball!15!white);
color(9bp)=(tikz@ball!75!white);
color(18bp)=(tikz@ball!70!black);
color(25bp)=(tikz@ball!50!black);
color(50bp)=(black)}
Your example uses just two colours, while TikZ uses five and I don't
know how to translate this "ball shading" to MP (I know or at least
knew how to do it in plain PostScript and could dig it up; I think it
uses function shading with predefined colours at predefined distances,
but it's all a single shading (a single function), not a composition
of multiple sections).
Mojca
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next prev parent reply other threads:[~2015-06-14 21:26 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-11 17:27 Mojca Miklavec
2015-06-11 17:59 ` Aditya Mahajan
2015-06-11 20:14 ` Mojca Miklavec
2015-06-11 20:43 ` Aditya Mahajan
2015-06-11 20:58 ` Mojca Miklavec
2015-06-11 21:26 ` Hans Hagen
2015-06-14 21:09 ` Mojca Miklavec
2015-06-11 21:12 ` Hans Hagen
2015-06-11 22:28 ` Mojca Miklavec
2015-06-11 22:45 ` Hans Hagen
2015-06-14 21:26 ` Mojca Miklavec [this message]
2015-06-14 21:38 ` Mojca Miklavec
2015-06-15 7:43 ` Hans Hagen
2015-06-15 8:02 ` Mojca Miklavec
2015-06-15 13:02 ` Hans Hagen
2015-06-15 13:36 ` Mojca Miklavec
2015-06-15 9:48 ` Alan BRASLAU
2015-06-15 11:47 ` Hans Hagen
2015-06-12 7:11 ` Alan BRASLAU
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