#5601: Colors: CSS3/SVG presets, construct from HSL/HSV, lighter/darker methods,
linearly combine
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Reporter: jason | Owner: was
Type: enhancement | Status: needs_work
Priority: minor | Milestone: sage-4.3
Component: graphics | Keywords:
Work_issues: | Author: Mitesh Patel
Upstream: N/A | Reviewer: Jason Grout, Karl-Dieter Crisman
Merged: |
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Comment(by jason):
Good point. In the mma model (and my patch), c.lighter() is just
c.blend(white,1/3). c.lighter(k) is just c.blend(white,k), so
c.lighter(0) is c, and c.lighter(1) is white. I can see where your idea
would be very useful too, though. We ought to make lighter/darker take
the fraction as a keyword argument, though, and make the number of times
the first positional argument:
def lighter(self, times=1, fraction=1.0/3.0):
fraction=float(fraction)
c = self
for i in range(times):
c = c.blend((1.0, 1.0, 1.0), fraction)
return c
(that is, if we decide to go with the blending patch for now)
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/5601#comment:40>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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