The tick function adds a small cross line marker to a line, of the type often used in geometric diagrams to show that two lines are the same length. They look like this:
You can add 1, 2 or 3 ticks.
tick function
tick(ctx, a, b, count=1, length=4, gap=1)
| 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 |
| count | int | Number of ticks on the line, 1, 2 or 3. |
| length | number | length of the tick in user units. |
| gap | number | Gap between ticks in user units. |
Draws an tick across the line ab. The tick is half way between points a and b.
Example
See the example in the angle_marker article.
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