I would like to get circles to represent the volume of an audio file (as you turn up the gain the circle radius increases). Is there a way to link max with some simple 2D graphics- and if so any recommendations please?

j

Marc P.

Quick question; can a jsui patch have 2 objects? i.e. can it have simple 2d dial functionality and 2d vector control combined, and if so do i need to edit the java code? I’m trying to combine the attached 2 objects;

----------begin_max5_patcher----------
229.3ocqPsjBBCCEbcD7NDx5ZII9sdUDQh0nlRaRIIUTDu6lO1pPstxEICLy
iYdu493Q.zd0UtAAWC2.Af6NFPfyy.ZI.nJ107RlILHpvzHPIuTJLL8olJtz
9xE31VIYSkPVxiBzVVwgfIp8ESnKPeLqpw1a3ZlM+rPdZmlmai9Syno3DHgL
2CzkQ.uJE+N4ihRtjUw6V2czCWbNnz4VcYZgoK2Xn1a07n6HTh6A2FjeLdjG
cPxeubp0biimYEJ4GWG1eMgOBcVGLPmR9RmNafJk7iJkfyBQMe5vA2un5URd
BG7DPczgBB
-----------end_max5_patcher-----------

The variable you’re interested in is vradius. You also need to know how the mouse has changed relative to its previous position so create a global variable called prev_w. (below)

var prev_w = [];

You’ll need to tweak the onclick and ondrag methods.

For onclick, you should store the value of w into prev_w (so it’s not blank, and also so if we click to jump we won’t have a crazy scaling factor)

Ondrag needs to be slightly changed. This call doesn’t have a shift parameter, but you can find the relevant looking one in the jsui dial’s source code. It looks like this:

function ondrag(x,y,but,cmd,shift,capslock,option,ctrl) { // note the presence of shift, which is what we need

w = sketch.screentoworld(x,y);
// w[0] = x pos, w[1] = y pos

// Now find the distance between the two points
var distx = w[0]-prev_w[0];
var disty = w[1]-prev_w[1];

var distance = Math.sqrt(distx*distx + disty*disty); // Pythagorean distance
if (distx<0) {
vradius -= distance;
} else {
vardius += distance;
}

// At the end of this function, you should store w into prev_w:
prev_w = w;

This is my best guess at it (haven’t tried this yet!)

thanks,
j