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jPCT - a 3d engine for Java => Support => Topic started by: qjvictor on November 28, 2006, 09:17:07 pm

Title: 2 questions when using JPCT
Post by: qjvictor on November 28, 2006, 09:17:07 pm

1. will the Loader.load3DS() method load all the objects in a .3ds file? If the objects are the children objects of others.
    I find some objects in 3ds file are not loaded.
2. Some objects show sawtooth effect, how to solve it?

Thanks.

Title: 2 questions when using JPCT
Post by: EgonOlsen on November 28, 2006, 09:31:55 pm

1.) No idea... :wink: There are no official specifications for 3ds file format so the loader is based on reverse engineered data from the net. I can't remember that this data was saying something about child objects nor do i have such a 3ds object. It loads multiple objects from a 3ds but if child objects are a special case or not...i simply don't know. Can you decouple the childs from their parents to see if it loads that correctly?

2.) Screenshot? I'm not sure what you are talking about.

Title: ok, I've sent my screenshot to your email, please check it.
Post by: qjvictor on November 28, 2006, 09:33:43 pm

Thanks.

Title: 2 questions when using JPCT
Post by: cyberkilla on November 29, 2006, 02:18:44 am

Ive never experienced this, and I will be using 3DS heavily.

Title: 2 questions when using JPCT
Post by: Melssj5 on November 29, 2006, 04:30:09 am

Do you mean than the shape show a sawtooth efect, or the ilumination and the "shadows"?

Title: It is an anti-alias issue.
Post by: qjvictor on November 29, 2006, 03:59:33 pm

It is an anti-alias issue.
Any body has the solution in jPCT with hardware renderer?
Change the setting of hardware is not a good way to solve it.

Title: 2 questions when using JPCT
Post by: Melssj5 on November 29, 2006, 04:55:16 pm

The COnfig class have static fields to configurate the antialias.

Title: 2 questions when using JPCT
Post by: qjvictor on November 29, 2006, 05:03:18 pm

Thanks, but which static field works for it?

Title: 2 questions when using JPCT
Post by: Melssj5 on November 29, 2006, 05:09:48 pm

glMipMap I guess, I dont remember exactly because I have some propblems here, and just can write a few. definetely is the glmipmap

Title: 2 questions when using JPCT
Post by: qjvictor on November 29, 2006, 05:15:14 pm

You mean set the value as "Config.glMipmap = true;", but it doesn't work.

Title: 2 questions when using JPCT
Post by: EgonOlsen on November 29, 2006, 05:17:58 pm

It does work, it just doesn't address edge aliasing but texture aliasing. It's a good idea to enable it anyway.

Title: 2 questions when using JPCT
Post by: qjvictor on November 29, 2006, 05:21:11 pm

But the fact is that if I set the value to true, all the textures look not very clear as before, and the edge aliasing does exist.

Title: 2 questions when using JPCT
Post by: EgonOlsen on November 29, 2006, 05:24:13 pm

Yes, that's what it is supposed to do. Mip mapping "blurs" in the distance to prevent texture aliasing (shimmering etc.). It shows ugly banding between the mip map levels. To get rid of this, enable Config.glTrilinear=true in addition. If you still don't like it that way...well, then don't enable it but it's there for a reason. Most people prefer the slightly blurry but stable look.

Title: 2 questions when using JPCT
Post by: qjvictor on November 29, 2006, 05:31:33 pm

it seems that Config.glTrilinear=true is no effect. Strange.

Title: 2 questions when using JPCT
Post by: EgonOlsen on November 29, 2006, 05:34:12 pm

Could be that your hardware doesn't support trilinear filtering or that you are simply not noticing it. It doesn't reduce the blur, it just smoothes the egdes between the mip map levels.