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loadFont trouble (Read 465 times)

vibou

loadFont trouble
Dec 9^th, 2008, 10:14am

Hi everybody.

I m programing a software. I wanted to load all fonts once, and used it as static in my PApplet. I don't know why I can load 3 different fonts but no more. That's weird. All fonts file are correct I tested it one by one.

public abstract class Form extends PApplet{

public static Hashtable<String,PFont> Fonts = new Hashtable<String,PFont>();

public void setupApplet()
{
if(Form.Fonts.isEmpty())
{
Form.Fonts.put("Normal-48", loadFont("DejaVuSans-48.vlw"));
Form.Fonts.put("Bold-48", loadFont("DejaVuSans-Bold-48.vlw"));
Form.Fonts.put("Normal-12", loadFont("DejaVuSans-12.vlw"));
Form.Fonts.put("Bold-12", loadFont("DejaVuSans-Bold-12.vlw"));
}
}
}

I ve got this message:

Exception in thread "Animation Thread" java.lang.OutOfMemoryError: Java heap space
at processing.core.PImage.init(PImage.java:144)
at processing.core.PImage.<init>(PImage.java:130)
at processing.core.PFont.<init>(PFont.java:207)
at processing.core.PApplet.loadFont(PApplet.java:3500)
at processing.util.Form.setupApplet(Form.java:62)
at main.setup(main.java:12)
at processing.core.PApplet.handleDraw(PApplet.java:1383)
at processing.core.PApplet.run(PApplet.java:1311)
at java.lang.Thread.run(Thread.java:619)

Thanks for your help

papo YaBB Newbies Offline Posts: 5	Re: loadFont trouble Reply #1 - Dec 9^th, 2008, 12:04pm Hi, Since you got an java.lang.OutOfMemoryError you should try to increase the heap size. java -Xms<initial heap size> -Xmx<maximum heap size> have you tried to "Increase maximum available memory to xxx MB" in the Processing Preferences? Cheers, Paul

PhiLho

Re: loadFont trouble
Reply #2 - Dec 9^th, 2008, 1:09pm

papo, unless the generated fonts are MB in size, I doubt the issue is so trivial. Plus vibou seems to run out of Processing, although I am not sure.

vibou, some remarks:
- Since Fonts is part of the class, you don't need to prefix with Form on each call.
- If setupApplet is called only once, no need for the test.
- Why is Form abstract
- Why Form extends PApplet This might be the main culprit. See Processing in Eclipse which explain you should have only one PApplet class. Both conceptually (OO design) and in practice. Other classes should get and use a reference to the PApplet.

vibou

Re: loadFont trouble
Reply #3 - Dec 9^th, 2008, 8:43pm

Quote:

- Since Fonts is part of the class, you don't need to prefix with Form on each call.

I call it with Form because the hashtable is static so that it's better practice to do so. (it avoids a warning in Eclipse

)

Quote:

- If setupApplet is called only once, no need for the test.

Just to make the function more robust

Quote:

- Why is Form abstract?
Why Form extends PApplet?

That's some good question

. I'm trying to make my own library of composents for processing because processing and swing are not very friends

.
It's not finished yet of course...

Fonts altogether are 1,4 MB.... that's probably why.
I'll make fonts not with all character so...

But I'm still interresting in changing maximum memory available for processing, or my application, but I don't know where is that option.

Thanks a lot for suggestions Wink

PhiLho

Re: loadFont trouble
Reply #4 - Dec 9^th, 2008, 9:33pm

I don't want to prevent you from using your own style of coding, but I will just point out that using Form.Font is indeed better practice that using instanceOfForm.Font, and necessary when accessing it from another class, but you can just use Font within the Form class. Just to be sure I tested in Eclipse 3.4 and it didn't complained...

Again, I see a problem with the abstract Form extending PApplet (but I can be wrong here!): you cannot instantiate Form, so you have to instantiate sub-classes, meaning you might have several instances of PApplet, which seems to be a bad thing (if I understood correctly the page I link to).

And Java is very able to manage 1.4MB of data, it shouldn't be an issue. A 800x800 sketch is already using 2.5MB!

vibou

Re: loadFont trouble
Reply #5 - Dec 9^th, 2008, 9:53pm

So first: Sorry you completely right about Form.Font it doesn't complain. ups

so I changed it for your solution.

Yeah I have such a thing in head... Several instances of PApplet... I'm trying to work on Dialog meaning that the parent PApplet will wait for the other. It might be a solution.

Even though I don't use several instance of Form but one, I still usefull to have abstract class you can re-used in other project.

let see my draw in a class which inherits of form.
public void setup()
{
size(500,500);
startButton start = new startButton(10,10,120,30,"Start"); //start button inherits of my class Button

this.addComponent(start);
//Call after setting all components;
this.setupApplet();
}

public void draw()
{
this.update();
}

With this code, I'm able to manage whatever I want on my "Form" with my button with 3 function implements overidable.
onMouseOver, onMouseReleased, onMousePressed

onMouseReleased is executed only once of course

Thanks so much for advice

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