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Index › Programming Questions & Help › Syntax Questions › static methods in processing
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static methods in processing (Read 1265 times)
Giles
static methods in processing
Oct 13th, 2009, 11:38am  
I came to Processing from Java, and I'm enjoying having all the graphical side of things set up and easy to use. One thing I used to do in Java, if I had a whole load of methods dealing with one particular issue (e.g colour) is to put them all in one class and then make them static. For my colourMethods class I would then call colourMethods.complementary(myColour), for example,  to get the complementary of the colour. It's exactly like calling Math.sqrt() using the static method in the Math class.

I've tried to do this in Processing, but the compiler doesn't like it. Something about not being allowed to call a static method from a non-static Papplet class? Does anyone know how to make this work?
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ben_hem
Re: static methods in processing
Reply #1 - Oct 13th, 2009, 11:52am  
try keeping your existing code, and just creating a colorMethods object "myColorProcessor" or what have you -- then call myColorProcessor.complementary(myColor); ...

Or, you can use pure java code by putting it in a tab that ends with .java instead of .pde.
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Giles
Re: static methods in processing
Reply #2 - Oct 13th, 2009, 11:59am  
That's not a bad idea.... only takes one extra line to make the object, after all (plus the empty constructor). Thanks for your reply.
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Giles
Re: static methods in processing
Reply #3 - Oct 13th, 2009, 12:08pm  
I like your WayFarer game, by the way. As enjoyable and frustrating as the all the Nethack variants, but it's got something fresh about it too.
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ben_hem
Re: static methods in processing
Reply #4 - Oct 13th, 2009, 12:09pm  
Sure -- hopefully someone with more Java experience can explain why you can't just call a class method directly -- my guess is it has to do with everything existing inside PApplet class, as you mentioned.

Edit: Oh hey!  Thank you!
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PhiLho 
Re: static methods in processing
Reply #5 - Oct 13th, 2009, 12:22pm  
Giles, your classes are likely not to use Processing methods. So you can just make a class in .java tab/file: it will be in a separate class, not internal to the PApplet.
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Giles
Re: static methods in processing
Reply #6 - Oct 13th, 2009, 12:50pm  
Great..I'll try that too..thanks.
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