Points on a circle calculations (trig?)

[bellend]

Hi all



Have a look at the attachment.



I have a circle menu and i want to do something with it, but i need to find the specific amount of movement on each axes.



I do not know how to do this.



If there is a point on a circle at 0 degrees and radius 200 px in width and there is another point 10 degrees away with the same radius, then how can i find out from these values how much the x and y position moved in that rotation?



The drawing is more usful than me trying to explain it but thanks for giving it a go!



Cheers,



Clark

[mr_malee]

for both points:

var p1x = Math.cos(pointAngle1) * radius
var p1y = Math.sin(pointAngle1) * radius

then just find the distance between those points

var dx = p2x - p1x
var dy = p2y - p1y

[bellend]

Thanks