Picking with JAVA2D

Processing Libraries
1

hello, is possible to use picking library with the default renderer? (java2d, no P3D or P2D)

in processing 1.5 it was possible…but in processing 3…not anymore.

any idea?

or other library o code?

i need for pick complex shapes…not only rect or circles…

thanks a lot !!

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Dunno. You can always maintain your own off-screen buffer (in a PGraphics) that uses false-color drawings of things to do your own picking.

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The source code for Picking is very compact – you can find it here:

At first glance, it looks like the dependency on P2D / P3D (OpenGL) is in Buffer.java – specifically, the use of PShader (31) and the fact that Buffer extends PGraphics3D (33):

As @TfGuy44 mentioned, you could write your own false-color buffer from scratch (copy the picking concept). As an alternative, you could fork Picking and write your own Buffer that extends PGraphicsJava2D instead.

4

OK. I will try. Thank you!

5

Good luck!

The Picking repo does not accept issues, but if you do a fork then you might also be able to do a pull request – or simply suggest that your changed version be considered for integration back into the original library…