Did someone here solve this in Pd before?
https://en.wikipedia.org/wiki/Point_in_polygon https://rosettacode.org/wiki/Ray-casting_algorithm
I think so for point in polygon, see attached. It's an old attempt of mine, with a mechanism to draw polygons in Gem and then tell in which polygon your mouse pointer is.
2017-04-20 9:13 GMT+02:00 Max abonnements@revolwear.com:
Did someone here solve this in Pd before?
https://en.wikipedia.org/wiki/Point_in_polygon https://rosettacode.org/wiki/Ray-casting_algorithm
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If it's about mouse binding in [gemwin], the math is really heavy, particulary if the camera is moving.
It can be solved differently by rendering the polygons in an hidden frame or another gemwin, and set a different color for each new polygon, the binding will be about detecting color under mouse cursor with the help of [pix_snap] and [pix_data] and it will work even if the camera is moving.
Le 20/04/2017 à 12:26, baptiste chatel a écrit :
I think so for point in polygon, see attached. It's an old attempt of mine, with a mechanism to draw polygons in Gem and then tell in which polygon your mouse pointer is.
2017-04-20 9:13 GMT+02:00 Max <abonnements@revolwear.com mailto:abonnements@revolwear.com>:
Did someone here solve this in Pd before? https://en.wikipedia.org/wiki/Point_in_polygon <https://en.wikipedia.org/wiki/Point_in_polygon> https://rosettacode.org/wiki/Ray-casting_algorithm <https://rosettacode.org/wiki/Ray-casting_algorithm> _______________________________________________ Pd-list@lists.iem.at <mailto:Pd-list@lists.iem.at> mailing list UNSUBSCRIBE and account-management -> https://lists.puredata.info/listinfo/pd-list <https://lists.puredata.info/listinfo/pd-list>
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I took this particular road only to have a gui to draw in. This was an interactive musical project, where people equipped with a smartphone would trigger different sounds or events by visiting a city. The patch i've sent could be easily reduced to a single object taking the polygon's points coordinates and a position, only telling if the point is inside the polygon or not.
2017-04-20 12:53 GMT+02:00 patrice colet colet.patrice@free.fr:
If it's about mouse binding in [gemwin], the math is really heavy, particulary if the camera is moving.
It can be solved differently by rendering the polygons in an hidden frame or another gemwin, and set a different color for each new polygon, the binding will be about detecting color under mouse cursor with the help of [pix_snap] and [pix_data] and it will work even if the camera is moving.
Le 20/04/2017 à 12:26, baptiste chatel a écrit :
I think so for point in polygon, see attached. It's an old attempt of mine, with a mechanism to draw polygons in Gem and then tell in which polygon your mouse pointer is.
2017-04-20 9:13 GMT+02:00 Max <abonnements@revolwear.com mailto: abonnements@revolwear.com>:
Did someone here solve this in Pd before? https://en.wikipedia.org/wiki/Point_in_polygon <https://en.wikipedia.org/wiki/Point_in_polygon> https://rosettacode.org/wiki/Ray-casting_algorithm <https://rosettacode.org/wiki/Ray-casting_algorithm> _______________________________________________ Pd-list@lists.iem.at <mailto:Pd-list@lists.iem.at> mailing list UNSUBSCRIBE and account-management -> https://lists.puredata.info/listinfo/pd-list <https://lists.puredata.info/listinfo/pd-list>
Pd-list@lists.iem.at mailing list UNSUBSCRIBE and account-management -> https://lists.puredata.info/li stinfo/pd-list
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impressive, thanks babtiste! (a bit complicated to find all its dependancies for getting it to run though :) )
On 2017년 04월 20일 12:26, baptiste chatel wrote:
I think so for point in polygon, see attached. It's an old attempt of mine, with a mechanism to draw polygons in Gem and then tell in which polygon your mouse pointer is.
2017-04-20 9:13 GMT+02:00 Max <abonnements@revolwear.com mailto:abonnements@revolwear.com>:
Did someone here solve this in Pd before? https://en.wikipedia.org/wiki/Point_in_polygon <https://en.wikipedia.org/wiki/Point_in_polygon> https://rosettacode.org/wiki/Ray-casting_algorithm <https://rosettacode.org/wiki/Ray-casting_algorithm> _______________________________________________ Pd-list@lists.iem.at <mailto:Pd-list@lists.iem.at> mailing list UNSUBSCRIBE and account-management -> https://lists.puredata.info/listinfo/pd-list <https://lists.puredata.info/listinfo/pd-list>
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baptiste chatel -
Max -
patrice colet