I'm putting together a wavetable snare generator, and I want to be able to mouse over my array to draw a 64-point amp envelope for this snare. Same with frequency and various other parameters. I'd like to control them all with tables. However, mousing over tables is a huge pain. There's got to be an easier way, right? I'd use 64 vsliders, but then I can't draw a line across them all. Any suggestions?

Darrell

ggee\envgen.pd

[envgen] alows you to specify points and lines and you can set it to any scale you like

Thanks for the tip. This looks a little more like what I'm after. However, shortly after my first post, I got waylaid by data structures, which I'm sure I can bend to my purpose, and which facilitate really excellent gui elements.

I don't really understand how data structures work at this point, though I've been able to repurpose the demo patch to my ends. I've got a 64-point array represented as a data structure, and it's more attractive and grabbier (owing to the big square points I stuck on there). It's just about perfect, so now I need to figure out how to trigger it as an envelope.

Any thoughts?

Darrell

Just an aidea..Maybe the best way is to periodically traverse the DS reading all the points into an array. Only use the DS as the input. This way the data is in a more immediately usable form. Sometimes data structures are expensive to use in a real time context.

OTOH 64 points is small and you might work out a cool way to use them directly.

As they are points you need to read them in linear time sequence, interpolate using an averaging filter and turn that to a signal. A combination of [line] or [line~], [sig~] and [lop~] is likely.

Good call on the parallel DS and array. That'll allow me to continue using tabread4~.

I spent all of yesterday trying to shoehorn my DS into a graph-on-parent window, but it insisted on being huge in the subpatch, regardless of how I changed the canvas properties. Also, I'm having trouble orienting the DS, coordinate-wise. I want to constrain the DS array to a certain vertical range, and I want to create a graph with time-by-value measurements. It seemed that I could just drag the DS anywhere in the subpatch and give each point infinite arbitrary values. Too sloppy for me.

Given that I can designate the initial coordinates of my DS array using plot, I should be able to create a second DS that's simply a two-line graph, relative to the DS array, right? Then, if I subtracted the horizontal axis' y value from the y value of the array, I could forget about the placement of the whole DS arrangement and focus on the sound.

So I pirated my struct and templates from the plot helpfile, and I have no idea how to create a DS from scratch. How do I create my two-line graph, and how do I get it to coexist with my DS array?

As for envgen, I might find it more useful if I could designate a fixed number of points and mouseover edit the envelope as a whole. Do you know of any object that behaves this way? And how difficult would it be to create such an external?

Darrell

> might find it more useful if I could designate a fixed number of points
> and mouseover edit the envelope as a whole.
> Do you know of any object that behaves this way?

The closest thing is a lot of sliders stacked together, but as you say you tried that and can't drag the mouse.

I think the best way is to interpolate the input data. Most envelops are made up of only a few points, maybe 8 or 10 at most, then you interpolate those points to give you a curve or line.

This way you can have 64 points however many points are in your GUI.

> And how difficult would it be to create such an external?

Its mostly a graphics probllem so it depends on your GTK .