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Author Topic: Glib : a 3D graphics axe library  (Read 91092 times)

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Offline TheMachine02

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Re: GLIB a graphics axe 3d librairy
« Reply #105 on: July 02, 2013, 05:39:36 am »
O_o I forgot to precise it's a 6Mhz screen and there is a pause 100 in the principal loop (principally to catch  bug)  ;D
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Offline Sorunome

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Re: GLIB a graphics axe 3d librairy
« Reply #106 on: July 02, 2013, 05:40:48 am »
wow, that means it is even faster O.O EPIC
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Offline Streetwalrus

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Re: GLIB a graphics axe 3d librairy
« Reply #107 on: July 02, 2013, 11:28:47 am »
/Totally/ epic. :thumbsup:
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Offline ben_g

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Re: GLIB a graphics axe 3d librairy
« Reply #108 on: July 02, 2013, 01:54:35 pm »
This seems to be able to do what my 3D engine kept failing at, and at a thrutely great speed.
It really looks like an epic library. I think I'm going to get started with axe again for this.
I can't wait untill the next release.

BTW: is this open-source?
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Offline Matrefeytontias

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Re: GLIB a graphics axe 3d librairy
« Reply #109 on: July 02, 2013, 02:03:50 pm »
Looks great :D

How are you handling the frustum culling ? Because it's something I could never figure out how to do.
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Re: GLIB a graphics axe 3d librairy
« Reply #110 on: July 02, 2013, 03:12:15 pm »
THat really looks nice TheMachine02! O.O Will collision detection be hard to implement btw?
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Offline tr1p1ea

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Re: GLIB a graphics axe 3d librairy
« Reply #111 on: July 02, 2013, 07:30:31 pm »
Im not sure its frustrum culling (in 3D) rather its line clipping in 2D. Either way it looks great and the speed is impressive!

What method is used for clipping? Cohen-Sutherland? Do your filled surfaces clip as well?
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Offline Matrefeytontias

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Re: GLIB a graphics axe 3d librairy
« Reply #112 on: July 02, 2013, 07:35:44 pm »
I asked him, he uses frustum culling. Didn't ask how though.
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Offline tr1p1ea

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Re: GLIB a graphics axe 3d librairy
« Reply #113 on: July 02, 2013, 07:39:14 pm »
It would be cool to get an explanation of the method used ... plus more screenies :).
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Offline TIfanx1999

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Re: GLIB a graphics axe 3d librairy
« Reply #114 on: July 02, 2013, 07:57:53 pm »
Wow, this is looking quite impressive. :) Nice work TheMachine02!
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Offline TheMachine02

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Re: GLIB a graphics axe 3d librairy
« Reply #115 on: July 03, 2013, 09:25:42 am »
Well,well...

I use a 2d method and a 3d one.
The clipping line routine first check if the 2 point we want to draw is not behind the camera.
If so, it's apply the cohen sutherland algorithm to clip the line in 2d
If one point is behind camera, it's calculate the 3d coordinate of the two needed point and then clip in 3d. (clip against the camera x,y plane)
It's simply after render with the 2d clipping line routine.

The result is a good clipping, but a very slow thing when calculating the 3d clipping. I have optimizations in mind, though  :P
Filled surface is not clip for the moment

Quote from: ben_g on July 02, 2013, 01:54:35 pm
This seems to be able to do what my 3D engine kept failing at, and at a thrutely great speed.

I am not agree with that. You have texture, and they give me a very hard time !

Else :
*You can of course take any part of the librairy you want at each update, as long you credits me  ;D
*I don'y (currently) know how to handle collision (but you can be sure I will find a way)
*I can't currently make screenshot, sorry
*And of course thanks for all support  :D

EDIT: 200 posts  :w00t:
« Last Edit: July 03, 2013, 09:27:45 am by TheMachine02 »
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Offline ben_g

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Re: GLIB a graphics axe 3d librairy
« Reply #116 on: July 03, 2013, 05:10:30 pm »
Quote from: TheMachine02 on July 03, 2013, 09:25:42 am
Quote from: ben_g on July 02, 2013, 01:54:35 pm
This seems to be able to do what my 3D engine kept failing at, and at a thrutely great speed.
I am not agree with that. You have texture, and they give me a very hard time !
Well, my 3D engine failed missarably at clipping in indoor scenes. But I didn't do any 3D clipping when only one point is behind the camera.

Anyway, if you want help with textures, I can always see if I can modify my texture drawing code to make it compatible with axe.
« Last Edit: July 03, 2013, 05:11:40 pm by ben_g »
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 - Oxo, with single-calc multiplayer and AI (axe) RELEASED (screenshot) (topic)
 - An android version of oxo (java)  ACTIVE
 - A 3D collision detection library (axe) RELEASED! (topic)(screenshot)(more recent screenshot)(screenshot of it being used in a tilemapper)
Spoiler For inactive:
- A first person shooter with a polygon-based 3d engine. (z80, will probably be recoded in axe using GLib) ON HOLD (screenshot)
 - A java MORPG. (pc) DEEP COMA(read more)(screenshot)
 - a minecraft game in axe DEAD (source code available)
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Offline tr1p1ea

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Re: GLIB a graphics axe 3d librairy
« Reply #117 on: July 03, 2013, 06:04:19 pm »
Sounds like a great solution for wireframe clipping.

So i guess you clip coordinates to positive 3D space and then utilise 2D clipping when drawing (cohen-sutherland clipping against a 2D viewport). Very impressive and i agree that clipping filled surfaces can be a bit of a pain.

That said i guess you could try to clip each endpoint if z<=0 in a similar way? It would however require that your triangle drawing routine be able to handle shapes with > 3 sides.

Can i ask if this will likely be used for indoor scenes?
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Offline TheMachine02

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Re: GLIB a graphics axe 3d librairy
« Reply #118 on: July 06, 2013, 08:01:02 am »
Yeah of course. Clipping are mainely for indoor scene, as well as portals.

A very very very very  :P  super good new :

TEXTURES WORKS !!!!  :w00t:

but it's slllllllloooooooowwwwwwwwwwwwwwwww  :crazy:
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Offline Hayleia

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Re: GLIB a graphics axe 3d librairy
« Reply #119 on: July 06, 2013, 10:46:43 am »
Congratulations !
And you say it is slow, but at least it works, and it is easier to optimize a working code than to create and optimize a working code, so I'm sure you'll manage.
All I can do is wish you good luck (and give you a +1) to encourage you to keep making that lib awesome.
« Last Edit: July 06, 2013, 10:48:13 am by Hayleia »
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