mjs at apple.com
Wed Jan 7 13:28:37 PST 2009
On Jan 7, 2009, at 11:50 AM, Martin Wengenmayer wrote:
> some problems. So far I only found the JSPong example for embedding
> which didn't answer my question.
> I want to create a simple Vector3f class which can be used in
> scripts like the String or Array types. But I couldn't figure out
> how to set it up so that I can create objects with "new". I want the
> class to work like this example.
> var a = new Vector3f(0,1,0);
> var b = new Vector3f(1,1,1);
> var c = a.add(b);
Yes, it's possible. Here are the steps you need to take:
1) Create a Vector3f class using JSClassCreate.
2) Make a constructor for the Vector3f using JSObjectMakeConstructor,
passing the class from step 1 and a function that uses JSObjectMake
with the class to create the object.
3) Add the constructor from step 2 to the global namespace, using
JSObjectSetProperty on the global object, which you can retrieve using
After these 3 steps, JS code will see a global variable named Vector3f
which holds your newly created constructor. At that point, your code
using "new" should work.
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