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March 6th, 2013, 03:14 AM   #1
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Circle shared point

I need to calculate a point 2 circles share when they collide in 2 dimensions.
What's the easiest way to do this?

The circles are spaceships with a velocity; I have already calculated the estimated image when they collide, so I have both their x and y values and radius when they collide.
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March 6th, 2013, 04:17 AM   #2
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Re: Circle shared point

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March 6th, 2013, 08:58 AM   #3
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Re: Circle shared point

You should wait more than 63 minutes to bump a topic, and it may be helpful when bumping to show what your progress on the problem has been in the meantime.

The two circles will touch one another (collide) when the distance between their radii is the sum of their radii. I would then use similar triangles to find the point of intersection.
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