Arrowhead
Martin McBride, 2020-08-25
Tags geometry arrow
Categories generativepy generative art

The arrowhead
function adds a small arrow marker to the end of a line. It looks like this:
arrowhead function
arrowhead(ctx, a, b, length=4)
Parameter | Type | Description |
---|---|---|
ctx | Context | The Pycairo Context to draw to |
a | (number, number) | Tuple (x, y) for point a |
b | (number, number) | Tuple (x, y) for point b |
length | number | length of the tick in user units. |
Draws an arrowhead on the line ab. The arrow point is at b
and points in the direction a
to b
.
Example
See the example in the angle_marker article.
If you found this article useful, you might be interested in the book Computer Graphics in Python or other books by the same author.
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