Processing 1.0 - Processing Discourse - Object using another object?

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Object using another object? (Read 231 times)

jmytyk

Object using another object?
Feb 28^th, 2009, 11:14am

Hi Guys,

Maybe this is an easy one, or not. I'm building a Class MyVideo, and have the Capture object declared - but when i go and try to use it, i'm stuck. is it in the right spot- in the constructor? or should it be else where, or something totally different.

(i'm using eclipse, that's what the other stuff is in there for)

Thanks
Jon
Quote:

import processing.video.*;
import processing.core.*;

public class MyVideo {

PApplet p5; // PApplet parent

Capture vid;

MyVideo(PApplet _p){

p5 = _p; //parent = p;

vid = new Capture(this,640,480,15);

}

public void disp(PApplet _p){

p5.image(vid,10,10);

}

public void captureEvent(Capture vid){

vid.read();

}

}

PhiLho YaBB Moderator Offline Posts: 4190 Near Paris (France)	Re: Object using another object? Reply #1 - Feb 28^th, 2009, 11:34am You don't tell us what error message you have and where. The class looks OK although I would make the constructor public. PS.: avoid tabs in Discourse, they make lines too spaced!

jmytyk YaBB Newbies Offline Posts: 22	Re: Object using another object? Reply #2 - Feb 28^th, 2009, 2:03pm Error message is.... The Constructor Capture(MyVideo, int, int, int) is undefined http://www.flickr.com/photos/jonny_m/3315518517/ http://www.flickr.com/photos/jonny_m/3316344964/ thanks jon

jmytyk

Re: Object using another object?
Reply #3 - Feb 28^th, 2009, 2:15pm

I think this works... which means I actually understand what I'm doing

amazing...

So, the constructor needs to know where the PApplet is - and if the constructor is called from inside setup() then use 'this' since you already there, if it is called from somewhere else, in my case the MyVideo class, you need to connect the two together- so, change 'this' to 'p5' (or whatever you named the PApplet parent(?))

http://www.flickr.com/photos/jonny_m/3315531741/

But then, inside my Sketch class, this doesn't work

image(vid.disp(),10,10);

PhiLho YaBB Moderator Offline Posts: 4190 Near Paris (France)	Re: Object using another object? Reply #4 - Feb 28^th, 2009, 6:07pm I never used capture (no camera here) but somebody has a similar question: Re: Capture constructor trouble. Maybe this can help.

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