trouble migrating from PDE to Eclipse - classes no longer move across screen

originalsurfmex

Thanks for the help so far, I'm just getting the hang of using Eclipse. Powerful stuff.

I cannot figure out why myBlob.move() doesn't have any effect.I did create an extra object in the main public class and it moves, but the other class does not.

I don't have any errors anymore and can't find anything online that helps me understand what's going on.

RotatingBlob.java:

package rotatingBlob;

import processing.core.*;

public class RotatingBlob extends PApplet {
    Blob myBlob;
    Blob myBlob2;
    Blob myBlob3;
    float xPos = 0.0f;

    public void setup() {
        size(1200, 400);

        // initialize blob
        myBlob = new Blob(this);
        myBlob2 = new Blob(this);
        myBlob3 = new Blob(this);

    }

    public void draw() {

        frameRate(60);
        background(255);
        myBlob.display(255, width / 2, height / 2, 1);
        myBlob.center();
        myBlob.body();
        myBlob.move();
        myBlob2.display(155, width / 2, height - height / 4, 1);
        myBlob2.center();
        myBlob2.body();
        myBlob2.move();
        myBlob3.display(45, width / 2, height / 4, 1);
        myBlob3.center();
        myBlob3.body();
        myBlob3.move();

        ellipse(xPos, 200, 40, 40);
        xPos = xPos + 1;

    }
}

Blob.java:

package rotatingBlob;

import processing.core.PApplet;

public class Blob {
    PApplet parent; // rendering selves onto parent PApplet

    int c;
    float xpos;
    float ypos;
    float xspeed;
    float nVal;
    float nVal2;

    // initialize parent
    Blob(PApplet p) {
        parent = p;
    }

    // must always access processing functions with parent variable
    // like this --> parent.method(argument, argument);

    public void display(int _C, float _Xpos, float _Ypos, float _Xspeed) {
        c = _C; // color(244);
        xpos = _Xpos; // width/2;
        ypos = _Ypos; // height/2;
        xspeed = _Xspeed; // 1;
        nVal = parent.random(0.001f,0.1f);
        nVal2 = parent.random(0.001f,0.1f);
    }

    public void center() {
        parent.rectMode(parent.CENTER);
        parent.fill(c);
        parent.rect(xpos, ypos, 5, 2);

    }

    public void ring(float radian, float w, float h, int grey) {
        parent.noFill();
        parent.rotate(parent.millis() * 0.001f * (parent.radians(radian)));
        parent.stroke(grey);
        parent.ellipse(0, 0, w, h);
    }

    public void body() {
        nVal = nVal + .01f;
        nVal2 = nVal + .05f;
        float n = parent.noise(nVal) * 40;
        float n1 = parent.noise(nVal) * 50 * parent.noise(nVal2);

        parent.pushMatrix();

        parent.translate(xpos, ypos);
        parent.ellipseMode(parent.CENTER);

        parent.pushMatrix();
        ring(-270+n1, 40 + n, 55 + n1, 1533);
        parent.popMatrix();

        parent.pushMatrix();
        ring(120+n1, 50 + n1, 40 + n, 150);
        ring(45+n, 45 + n, 50 + n1, 155);
        parent.popMatrix();

        parent.popMatrix();
    }

    public void move() {
        xpos = xpos + xspeed;
        if (xpos > parent.width) {
            xpos = 0;
        }
    }
}

GoToLoop

I don't understand much Java outside Processing's fenced garden! X_X
But I believe the way you set out things above demands a:

public static final void main(String... args) {}

starting point method, right? 8-X

Also don't forget invoking PApplet.main(args); within that to initialize Processing framework! \m/

PhiLho

http://processing.org/tutorials/eclipse/

originalsurfmex

<edited because I figured out the problem but don't understand why it was a problem>

I turns out that I should have put all of my parameters and arguments in the Blob parent class, not in a function within that class. The code is below - I trimmed out several lines to make it easy to look over the changes.

Wrong - as in not working:

RotatingBlob.java

public class RotatingBlob extends PApplet {
    Blob myBlob;
    public void setup() {
        size(1200, 400);
        myBlob = new Blob(this);
    }
    public void draw() {
        myBlob.display(255, width / 2, height / 2, 1);
    ....

Blob.java

Public class Blob {
    Blob(PApplet p) {
        parent = p;
    }
    public void display(int _C, float _Xpos, float _Ypos, float _Xspeed) {
        c = _C; // color(244);
        xpos = _Xpos; // width/2;
        ypos = _Ypos; // height/2;
        xspeed = _Xspeed; // 1;
        nVal = parent.random(0.001f,0.1f);
        nVal2 = parent.random(0.001f,0.1f);
    }
    ....

Right - as in working:

RotatingBlob.java

public class RotatingBlob extends PApplet {
    Blob myBlob;
public void setup() {
    size(1200, 400);
    myBlob = new Blob(this, 255, width / 2, height / 2, 1);
    ....

Blob.java

Public class Blob {
Blob(PApplet p, int _C, float _Xpos, float _Ypos, float _Xspeed) {
    parent = p;
    c = _C; // color(244);
    xpos = _Xpos; // width/2;
    ypos = _Ypos; // height/2;
    xspeed = _Xspeed; // 1;
    nVal = parent.random(0.001f, 0.1f);
    nVal2 = parent.random(0.001f, 0.1f);
}
    ....

The thing I don't understand is why, can someone please enlighten me?