OSC controlling HSB

Programming Questions

forge13

in Programming Questions • 2 years ago

Hi all

first time here so maybe a noob question. Pretty new to processing but getting to grips.

I want to use OSC messages to control colour elements such as brightness using the HSB colorMode.

I have my sketch running with all the correct code as far as I can tell. I have my OSC message coming in with the prepended title of /a1. I then define colour (in HSB) as:

color(350,100,a1);

I am hoping then that I can then use a slider in MaxMSP to increase/decrease the brightness of my object.

However, this isn't working. I know there is not an issue with my Max patch as I have tested it with a sketch that my lecturer created and I can control that fine. And in comparison, my code seems to be the same.

Is it just not possible to adjust elements like this? I doubt it of course.

Any help would be greatly appreciated!

p.s. I can post some code if needs be :)

Replies(4)

PhiLho

Re: OSC controlling HSB

2 years ago

Yes, show some code.

forge13

Re: OSC controlling HSB

2 years ago

Ok here's my code:

//OSC Definition Tab

//OSC Message

int a1 =0;

int a2 =0;

// int a3 =90;

// this gets called back whenever there's a new OSC message coming back from the board.

void oscEvent(OscMessage theOscMessage)

{ // compare the incoming address to the address we asked for.

if(theOscMessage.checkAddrPattern("/a1")==true)

a1 = theOscMessage.get(0).intValue();

}

-----------------------------------------------------------------------------------------

//Class Definition Tab

class Circle

{

color c;

float xpos;

float ypos;

Circle(color tempC, float tempXpos, float tempYpos)

{

c = tempC;

xpos = tempXpos;

ypos = tempYpos;

}

void display ()

{

stroke(0);

fill(c);

ellipseMode (CENTER);

ellipse(xpos,ypos, 60, 60);

}

------------------------------------------------------------------------------------------------------

// Main Tab

import processing.opengl.*;

import oscP5.*;

import netP5.*;

OscP5 oscP5;

NetAddress makeControllerAddress;

OscMessage myMessage;

//Define Circle

Circle myCircle;

void setup()

{

size(630, 750);

colorMode (HSB, 360,100,100);

//start oscP5, listening for incoming messages at port 8000

oscP5 = new OscP5(this, 8000);

makeControllerAddress = new NetAddress( "192.168.1.6", 7971 );

//Circle value

myCircle = new Circle(color(255,100,a1),50,50); // Set position and HSB colour. Brightness //set with a1

}

void draw()

{

background(5, 0, 0);

//display Circle

myCircle.display();

}

PhiLho

Re: OSC controlling HSB

2 years ago

You define the color with a1 when creating the new Circle (it is probably at 0 then), and you don't use a1 updates later... There is no binding there, you have to change myCircle.c (or create a setColor() method) on each draw().

forge13

Re: OSC controlling HSB

2 years ago

Brilliant thanks for the advice. All I need to do was alter the class as you say.

I simply adjusted the fill value so it wasn't defined as c. but as the values.

void display ()

{

stroke(0);

fill(255,100,c); //Altered code

ellipseMode (CENTER);

ellipse(xpos,ypos, 60, 60);

}

works a treat now. thanks for the help!

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