On 16/03/2010 17:24, Glen Pike wrote:
p...@ipauland.com wrote:
I was recently asked if I could add some arrowheads to some actionscript
generated curves. I initially thought "Triangle pointing to end
point", and that
would be a great solution. I can place a MC at the end of the curve,
but how can
I get the right angle to point it to?
Paul
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Hi,
If it's a 3 point Flash "Quadratic Bezier" curve with anchors and your
arrows point like this <---------> your direction will be along the
line from p1-p2 and p2-p3 or something like that?
e.g.
p1-----------------------p2------------------------------p3
so
graphics.moveTo(p1.x, p1.y);
graphics.curveTo(p2.x, p2.y, p3.x, p3.y);
v1 = p2 - p1;
v2 = p2 - p3;
calculate the angle using atan(v1.y / v1.x) and adjust for the
"quadrant" you are in.
HTH
Glen
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Thanks for the suggestions - I shall give it a go.
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