Draw dashed line

[oddbookworm]

TODO:

• write tests
• fix failures due to conversion from double to int implicitly

[MyreMylar]

This is progressing nicely. Still needs tests as the To do list indicates.

I've also noticed that the segments in a line can be drawn with different top/bottom angles to one another. Like so:

Which is not a particularly terrible problem.

I guess you could extend it to take a list of lengths which would make up a repeating pattern of segment lengths (counting the spaces as segments). See:

https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/setLineDash

for inspiration.

[oddbookworm]

Will revive this soon, I promise

[oddbookworm]

I've also noticed that the segments in a line can be drawn with different top/bottom angles to one another. Like so:

I think this is a problem with draw_line_width in draw.c. Not sure I can fix it without messing with that function, and I'm not sure that's the best idea

[damusss]

I will leave a comment so the discussion in #general isn't lost.
Problems I've found so far:

• if delay is greater than the line length, a line will be drawn past the end point. I suggest 2 approaches:
  • Don't draw anything
  • Loop the delay with the % operator ( I prefer this one )
• if start and end makes up to a perfectly vertical line, nothing is drawn

[damusss]

About my latest comment, to add the second approach of the first problem, this snipped seems to do the trick:

if (delay_gap > total_length) {
    delay_gap = delay_gap % (int)total_length;
}