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jPCT - a 3d engine for Java => Bugs => Topic started by: mystara on July 08, 2007, 12:12:39 pm

Title: Light positions?
Post by: mystara on July 08, 2007, 12:12:39 pm

Hi,

I think this is a bug...

Light l = new Light(theWorld);
l.setPosition(new SimpleVector(1.0, 2.0, 3.0));
System.out.println(l.getPosition());

Gives output: (0.0,1.0,2.0)
Whereas I would expect: (1.0,2.0,3.0)

Using version 1.14 of JPCT

Title: Re: Light positions?
Post by: EgonOlsen on July 08, 2007, 12:33:39 pm

Yes, the getPosition() seems to mix y- and x-coords. I'll correct it for the next version.

Title: Re: Light positions?
Post by: mystara on July 08, 2007, 02:19:57 pm

Is it a simple mix?
The output shows 0.0 which is not one of the inputs. And it loses 3.0 which is one of the inputs.

If it was mixing them, surely the values would be the same, but in the wrong order? Whereas this shows different values.

Title: Re: Light positions?
Post by: Melssj5 on July 08, 2007, 04:48:33 pm

It seems like (x, y , z) went into (x-x, y-x, z-x)

Title: Re: Light positions?
Post by: EgonOlsen on July 08, 2007, 06:19:01 pm

No, it's not just a mix. What it actually returns is this:

Code: [Select]

SimpleVector res=new SimpleVector();
res.z = z;
res.y = x;
res.z = y;
return res;

As you can see, it's complete bogus. I'll fix it.