#5604: average Color objects when adding them together
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Reporter: jason | Owner: was
Type: enhancement | Status: closed
Priority: minor | Milestone: sage-4.4.2
Component: graphics | Resolution: fixed
Keywords: | Author:
Upstream: N/A | Reviewer:
Merged: | Work_issues:
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Changes (by mvngu):
* status: new => closed
* resolution: => fixed
Comment:
This looks like fixed, but the averaging operator "+" is binary:
{{{
[mv...@sage ~]$ sage
----------------------------------------------------------------------
| Sage Version 4.4.1, Release Date: 2010-05-02 |
| Type notebook() for the GUI, and license() for information. |
----------------------------------------------------------------------
sage: r = sage.plot.colors.red
sage: g = sage.plot.colors.green
sage: b = sage.plot.colors.blue
sage: r; g; b
RGB color (1.0, 0.0, 0.0)
RGB color (0.0, 0.50196078431372548, 0.0)
RGB color (0.0, 0.0, 1.0)
sage: r + g; r + b
RGB color (0.5, 0.25098039215686274, 0.0)
RGB color (0.5, 0.0, 0.5)
sage: (r + g) + b; r + g + b
RGB color (0.25, 0.12549019607843137, 0.5)
RGB color (0.25, 0.12549019607843137, 0.5)
sage: (r + b) + g; r + b + g
RGB color (0.25, 0.25098039215686274, 0.25)
RGB color (0.25, 0.25098039215686274, 0.25)
sage: (g + b) + r; g + b + r
RGB color (0.5, 0.12549019607843137, 0.25)
RGB color (0.5, 0.12549019607843137, 0.25)
}}}
For more than two operands, I thought that "+" would average over the
number of operands. Instead, "+" averages the first two, then average the
result with the last operand.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/5604#comment:3>
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