Align the coordinate labels of the triangles, so that they never collide with each other. Actionscript 3

Question

Hi all,

Im trying to achieve something similar to the flash movie in the below link. http://mathopenref.com/coordtrianglearea.html

As we drag the points of the triangle, the coordinates labels, ( A(1,2)) are properly aligned and arrange themselves so that they never collide with each other and never falls inside the triangle.

Please guide me..

Thanks in advance.

Answer 1

in the example you gave, the textfield seems to be aligned outside the triangle on the angle bisection of the corresponding corner.

for the position in one corner, take the two vectors to the other corners. normalize them and then add them and normalize the resulting vector again. this gives you the vector v of the angle bisection in that corner. multiply the vector with a negative constant and add it to the corner, and you'll obtain a position p outside the triangle. finally, if the angle of v is between pi/2 and -pi/2 (pointing right) align the right border of the label to p, and the left border otherwise.

for simple vector calculations, please see flash.geom.Point.

greetz
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