OpenGL + selectFolder()

scientiff..

in Contributed Library Questions • 1 year ago

I am running into problems using both OpenGL and selectFolder() in my sketch. I am using the PeasyCam, controlP5, and OpenGL libraries, so as a sanity check, I used the following sample code:

http://www.sojamo.de/libraries/controlP5/examples/ControlP5withPeasyCam/ControlP5withPeasyCam.pde

I then added an extra line to select a folder and my program just hangs up without doing anything. BUT, if I change OpenGL to P3D, it works fine. Anyone know how to solve this problem? I need OpenGL for my application so...

/**
* ControlP5 with PeasyCam support. tested with peasy 0.8.2
*
* by jeffg 2009
* http://processing.org/discourse/yabb2/YaBB.pl?num=1234988194/30#30
*/
import peasy.*;
import controlP5.*;
import processing.opengl.*;
PeasyCam cam;
ControlP5 controlP5;
PMatrix3D currCameraMatrix;
PGraphics3D g3;
int buttonValue = 1;
int myColor = color(255,0,0);
void setup() {
size(400,400,OPENGL);
String directory = selectInput();
g3 = (PGraphics3D)g;
cam = new PeasyCam(this, 100);
controlP5 = new ControlP5(this);
controlP5.addButton("button",10,100,60,80,20).setId(1);
controlP5.addButton("buttonValue",4,100,90,80,20).setId(2);
controlP5.setAutoDraw(false);
}
void draw() {
background(0);
hint(ENABLE_DEPTH_TEST);
fill(myColor);
box(30);
pushMatrix();
translate(0,0,20);
fill(0,0,255);
box(5);
popMatrix();
// makes the gui stay on top of elements
// drawn before.
hint(DISABLE_DEPTH_TEST);
gui();
}
void gui() {
currCameraMatrix = new PMatrix3D(g3.camera);
camera();
controlP5.draw();
g3.camera = currCameraMatrix;
}
void controlEvent(ControlEvent theEvent) {
println(theEvent.controller().id());
}
void button(float theValue) {
myColor = color(random(255),random(255),random(255));
println("a button event. "+theValue);
}

Replies(5)

rbrauer

Re: OpenGL + selectFolder()

1 year ago

You can call selectInput() and call a method to do something with the selected input from inside a separate thread so it doesn't interrupt the main program. I moved selectInput(() so it is called by clicking the top button.

void button(float theValue) {
new Thread(
new Runnable() {
public void run() {
doSomethingWithSelected(selectInput());
}
}
).start();
myColor = color(random(255),random(255),random(255));
println("a button event. "+theValue);
}
void doSomethingWithSelected(String sel) {
println(sel);
}

I'm not sure if that is the proper way to do it, but it works. By the way, doesn't Processing 2.0 have an easier, wrapped up way to create a thread?

sam.kroni..

Re: Re: OpenGL + selectFolder()

1 year ago

This is the only thing that I could get to work using Processing 1.5.1 on OSX Snow Leopard with GLGraphics and ControlP5. Thanks for the tip!

scientiff..

Re: OpenGL + selectFolder()

1 year ago

Thanks for your response. I tried out your code, and it didn't seem to work. The program still hangs up without displaying anything.

This is my code:

/**
* ControlP5 with PeasyCam support. tested with peasy 0.8.2
*
* by jeffg 2009
* http://processing.org/discourse/yabb2/YaBB.pl?num=1234988194/30#30
*/
import peasy.*;
import controlP5.*;
import processing.opengl.*;
PeasyCam cam;
ControlP5 controlP5;
PMatrix3D currCameraMatrix;
PGraphics3D g3;
int buttonValue = 1;
int myColor = color(255,0,0);
void setup() {
size(400,400,OPENGL);
String directory = selectInput();
g3 = (PGraphics3D)g;
cam = new PeasyCam(this, 100);
controlP5 = new ControlP5(this);
controlP5.addButton("button",10,100,60,80,20).setId(1);
controlP5.addButton("buttonValue",4,100,90,80,20).setId(2);
controlP5.setAutoDraw(false);
}
void draw() {
background(0);
hint(ENABLE_DEPTH_TEST);
fill(myColor);
box(30);
pushMatrix();
translate(0,0,20);
fill(0,0,255);
box(5);
popMatrix();
// makes the gui stay on top of elements
// drawn before.
hint(DISABLE_DEPTH_TEST);
gui();
}
void gui() {
currCameraMatrix = new PMatrix3D(g3.camera);
camera();
controlP5.draw();
g3.camera = currCameraMatrix;
}
void controlEvent(ControlEvent theEvent) {
println(theEvent.controller().id());
}
void button(float theValue) {
myColor = color(random(255),random(255),random(255));
println("a button event. "+theValue);
myColor = color(random(255),random(255),random(255));
println("a button event. "+theValue);
new Thread(
new Runnable() {
public void run() {
doSomethingWithSelected(selectInput());
}
}
).start();
}
void doSomethingWithSelected(String sel) {
println(sel);
}

rbrauer

Re: OpenGL + selectFolder()

1 year ago

Oh, right. I should have mentioned before, you have to remove the original call to selectInput(). Remove line 25 and it should work.

scientiff..

Re: OpenGL + selectFolder()

1 year ago

cool, thanks!

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