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Index › Programming Questions & Help › Syntax Questions › ControlP5 Question

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ControlP5 Question (Read 282 times)

greeneggshammond

ControlP5 Question
Dec 3^rd, 2008, 10:01pm

i have a question about the behavior of the setAutoDraw() method in ControlP5. it seems to me that the following code should not draw the slider until a key is pressed, yet the slider is drawn, and the program runs exactly the same with or without the setAutoDraw() method:

import controlP5.*;
ControlP5 controlP5;
int myColorBackground = color(0,0,0);

void setup() {
size(400,400);
controlP5 = new ControlP5(this);
controlP5.addSlider("slider",100,200,128,100,160,100,10);
controlP5.setAutoDraw(false);
}

void draw() {
background(myColorBackground);
}

void slider(int theColor) {
myColorBackground = color(theColor);
}

void keyPressed()
{
controlP5.draw();
println("key pressed");
}

andyclifton

Re: ControlP5 Question
Reply #1 - Dec 8^th, 2008, 10:47pm

I noticed this, too. I think it's a bug. I used to use setAutoDraw(false) to hide the GUI, only displaying it under certain circumstances. But now I don't think it has any effect.

You can emulate it by hiding/showing the underlying ControlWindow, with something like

controlP5.controlWindow.hide(); //GUI will not be shown or active

and

controlP5.controlWindow.show(); //GUI will be drawn and active

But that requires a different sequence of control, as it doesn't allow you to draw the GUI on command (when not hidden, it will always be drawn at the end of your draw() function).

sojamo

Re: ControlP5 Question
Reply #2 - Dec 9^th, 2008, 3:47am

thanks andy, this was a little bug, thanks for pointing this out. fixed now with 0.3.6
a small example using setAutoDraw() and isAutoDraw()
Quote:

import controlP5.*;

ControlP5 controlP5;

void setup() {
size(400,400);
controlP5 = new ControlP5(this);
controlP5.setAutoDraw(false);
controlP5.addSlider("slider",100,167,128,100,160,10,100);
controlP5.addSlider("sliderValue",-10000,2550,12,200,200,10,100);
}

void draw() {
background(0);
}

void keyPressed() {
if(key==' ') {
controlP5.setAutoDraw(!controlP5.isAutoDraw());
}
}

andreas schlegel / http://www.sojamo.de

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