[PD] how to capture window-related mouse-events when toxy is discontinued?
jancsika at yahoo.com
Wed Nov 2 23:08:00 CET 2011
----- Original Message -----
> From: katja <katjavetter at gmail.com>
> To: pd-list at iem.at
> Sent: Wednesday, November 2, 2011 1:45 PM
> Subject: Re: [PD] how to capture window-related mouse-events when toxy is discontinued?
> Wow, so many answers in so short time. Thank you all.
> To clarify, the moving squares in the video are sliders and / or
> radiobuttons, and they are moved in runtime. Attached is a patch
> demonstrating the idea, using [toxy/tot].
> As it seems, [iemguts/receivecanvas] could do this job indeed. It
> captures cursor position relative to the object's containing window,
> or relative to a parent if so desired. Phew, this will save my
> projects! I never knew about the existence of [iemguts/receivecanvas].
> It has no helpfile. I'd be happy to make one though. Hopefully the iem
> libs will stay a bit longer than toxy, though they're now categorized
> as 'unsupported, included libraries'.
> Jonathan, can you explain how a larger area of a polygon can be made
> reactive in runtime? Do you have a demo patch?
Sure. The attached allows the 50x30 polygon to be click-dragged anywhere
within the polygon-- basically ds hotspots happen in a 10x10 quadrant within
the polygon when an x/y pair is specified with a field variable, so I'm forcing
hotspots for the entire polygon by spacing all field value coordinates no more
than 10 pixels from each other. (You can overlay a simpler polygon if you want
a cleaner-looking control surface.)
My example allows click-dragging, but leaves out the ability to click-select
an object and move it by clicking a blank spot on the canvas. You could do
this by defining an additional data structure with a white rectangle, and make a
matrix of scalars to fill the canvas. Then when you click a "blank" area of the
canvas, you're actually clicking the white scalar rectangle which will send a
"click" message to its [struct], and you can then move the selected control-surface
scalar to the corresponding quadrant. (That's the hacky part.)
> I'm still interested in
> the data structure route, since I use them for parameter values
> anyway, and it is a bit underestimated aspect of Pure Data in my view.
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