Cycling 74 » Topic: collision http://cycling74.com/forums/topic/collision/feed Thu, 20 Jun 2013 04:12:20 +0000 http://bbpress.org/?v=2.2.4 http://cycling74.com/forums/topic/collision/#post-50374 <![CDATA[collision]]> http://cycling74.com/forums/topic/collision/#post-50374 Sat, 15 May 2010 11:11:56 +0000 personal_username Hi all,

i have three *bidimensional* elements, each of them with x and y coordinates.
I’d like to be able to detect when two of them get closer than a certain distance, and then send a bang.
Right now i’m using a web of [if].
I take every couple of x and y coordinates and process them. like this: [if $1-$2 < mythreshold && $1-$2 >0 then bang], but it seems to be a (very) dumb approach, and never ending…
anybody has an idea?
thanks much!

]]> http://cycling74.com/forums/topic/collision/#post-180754 <![CDATA[Re: collision]]> http://cycling74.com/forums/topic/collision/#post-180754 Sat, 15 May 2010 11:25:56 +0000 Tim Lloyd I recently got loads of forum help on something similar to this. I needed to detect the collision of the mouse with the edge of an ellipse drawn in lcd. I’m not sure if it will be helpful for you, but the maths needed will be similar, although this depends on what shapes you need to detect for……..it could get very complex!

http://cycling74.com/forums/topic.php?id=26171
(many thanks pizza_olives and jvkr!)

Also, check out the cosm externals from CNMAT. They offer collision detection, but I’m not sure if that includes unusual shapes as well as spherical. I’m not familiar with them ‘yet’, and they seem to be geared towards 3D applications, but they’re worth checking out.

http://www.allosphere.ucsb.edu/cosm/

]]> http://cycling74.com/forums/topic/collision/#post-180755 <![CDATA[Re: collision]]> http://cycling74.com/forums/topic/collision/#post-180755 Sat, 15 May 2010 12:18:22 +0000 Floating Point is this what you want?

– Pasted Max Patch, click to expand. –
]]> http://cycling74.com/forums/topic/collision/#post-180756 <![CDATA[Re: collision]]> http://cycling74.com/forums/topic/collision/#post-180756 Sat, 15 May 2010 12:41:48 +0000 personal_username Terry and Tim, thank you very much.
Terry, your patch is as elegant as can be ;-) , AND it what i was looking forward. thanks!

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