Trying to use processing in eclipse

jon.jekeli

Trying to use processing in eclipse

in Integration and Hardware • 3 years ago

I have been creating a project in eclipse that is essentially a network map of connections between people (each person is a node, and it graphs connections between people by drawing edges between nodes). I created it in Processing, and am now trying to move it over to eclipse. It works fine in Processing, and in eclipse, as a Java Applet, it shows only a gray area. However, as a Java Application in Eclipse, it works fine, except the image shown is not in the center of the screen, but rather is in the bottom right and the edges are cut off. How do I re-position the image created into the Java Application box?

Thanks

Relevant code attached:

public void setup() {
size(260, 160);
if (showEdges)
defaultEdgeColor = edgeColor;
else
defaultEdgeColor = noEdgeColor;
c = new GUIController (this, true);
familyBtn = new IFButton ("Show family only", 40, 40, 180, 17);
nonfamilyBtn = new IFButton ("Show non-family only", 40, 70, 180, 17);
allBtn = new IFButton ("Show all", 40, 100, 180, 17);
familyBtn.addActionListener(this);
nonfamilyBtn.addActionListener(this);
allBtn.addActionListener(this);
c.add (familyBtn);
c.add (nonfamilyBtn);
c.add (allBtn);
}
public void runProgram() {
c.setVisible (false);
loadData();
font = createFont("Serif-48.vlw", 10);
writeData();
size(scrX, scrY);
frame.setSize(scrX, scrY);
createNodes();
running = true;
}
public void createNodes() {
if (record) {
beginRecord(PDF, "output.pdf");
}
background(255);
textFont(font);
smooth();
Iterator iter = (Iterator)edges.iterator();
while (iter.hasNext()){
Edge e = (Edge)iter.next();
e.relax();
}
iter = (Iterator)nodes.iterator();
while (iter.hasNext()){
Node v = (Node)iter.next();
v.relax();
}
iter = (Iterator)nodes.iterator();
while (iter.hasNext()){
Node v = (Node)iter.next();
v.update();
}
iter = (Iterator)edges.iterator();
while (iter.hasNext()){
Edge e = (Edge)iter.next();
// e.eColor = noEdgeColor;
e.draw();
}
iter = (Iterator)nodes.iterator();
while (iter.hasNext()){
Node v = (Node)iter.next();
v.draw();
}
if (record) {
endRecord();
record = false;
}
}
public void draw() {
if(running)
{
createNodes();
}
}

Replies(4)

adamcsmit..

Re: Trying to use processing in eclipse

3 years ago

How does frame get set? It gets set automatically in the PDE, but if you run a PApplet in Eclipse, frame will be null unless you set it yourself.

If you're doing something like:

Frame frame = (Frame) this.getParent();

then you'll get hard-to-explain behavior in Eclipse, because in this case getParent() won't be returning the actual window frame, but rather an intermediate object (so setting its size will have no effect.)

Replace it with something like:

Frame frame;
Object ftemp = this;
while (ftemp!=null && !(ftemp instanceof Frame)) {
ftemp = ftemp.getParent();
}
if (ftemp!=null) {
frame = (Frame) ftemp;
}

This will keep looking "up the chain" of nested display components until it gets to something that can actually be resized.

Hope that makes some kind of sense.

jon.jekeli

Re: Trying to use processing in eclipse

3 years ago

Thanks for your quick response adamcsmitty, but I'm afraid that didn't work... getParent() isn't a method of the Object class, so I had to add a cast to ftemp (I casted it to Component, I don't know if that's why it didn't work, but I don't think so). I've included a screenshot of the problem this time as I realize this is probably the best way to explain it: The whole frame is of the correct size, it is just that for some reason the stuff I am trying to display is not wholly on the frame. Any other suggestions?

Screenshot of problem:

adamcsmit..

Re: Trying to use processing in eclipse

3 years ago

Oh, right. Well, it sounds like this isn't your problem, but here's the code I used in a sketch of mine:

                
                 public 
                 Frame 
                 findFrame
                 () 
                 {		
                
                
                       
                 
                 
                 
                 
                 Container 
                 f 
                 = 
                 this.getParent
                 ();
                
                
                       
                 while 
                 (!(
                 f 
                 instanceof 
                 Frame
                 ) 
                 && 
                 f
                 !=
                 null
                 )
                
                
                             
                 f 
                 = 
                 f
                 .
                 getParent
                 ();
                
                
                       
                 return 
                 (
                 Frame
                 ) 
                 f
                 ;
                
                
                 }

Assuming this doesn't magically solve your problem, next question: What JDK are you using?

I recently tried to switch from Sun's Java-1.6 JDK to OpenJDK, and got some strange behavior where PApplets run from Eclipse as applets would only display in a 200x200 square in the upper left corner of their window. The window would be the right size, and in every other way the applet would behave like it was the right size, but everything outside of that 200x200 block was grey.

Not exactly the problem you're having, but it might be a clue.

And if nothing else works, can you boil it down to the simplest program that demonstrates the behavior you're seeing and post the full code here? (e.g., does a simple 400x400 sketch with a black background show this bug?)

jon.jekeli

Re: Trying to use processing in eclipse

3 years ago

I managed to fix the problem by using this.setLocation(0, 0) in the draw method.

Thanks again.

Top Reply