[Staff][Dev] 3D WireFrame Program

[tr1p1ea]

Hi, just to let you guys know that i am still coding, i thought i would post this. Last week i was bored so i whipped up this ... a 3D WireFrame rendering program.

It only renders lines, nothing is filled or anything so dont get too excited ... plus there is need for some optimisation. Anyway here are some screenshots:



Its supposed to be a crude model of an X-Wing Fighter .

Anyway it runs a little better on-calc than in the screen (its definately not as jumpy).

Also this will NOT eventuate into a game or anything, i am really just fooling around a little .

[tr1p1ea]

Oh yes i forgot, you can also try this:

http://users.tpgi.com.au/adslmpxk/Files/wFrame.8xp

Its the crude X-Wing demo .

[Kozak]

I've always liked these 3d demos but yeah it might be unfeasible to transform them into a good game .

[Stickmanofdoom]

Could you post the source code, or at least the math needed to represent a point in 3D space on a 2D screen? I have been wanting to play around with 3D on the calc.

You say it couldn't work for a real game? I would think wireframe graphics would be great for an NBA jam type game. The players could be wireframe stickmen, and the mode-7 style floor used in the real game could be faked with a 3D vector plane.
Perhaps that's demanding a little too much from the 83+? It would be fun to at least try.

[Madskillz]

Wow...very cool Tr1p! A neat little demo thingy!

[tr1p1ea]

heh, i dont think it will turn into much more, maybe just a wireframe model viewer .

Also w00t, 100th post! .

[Calv!n.n0.1]

Neato tr1p!

[shadowing]

Whoa... Cool. It's not bad. I'm guessing you used vectors...

[Jim e]

Stickmanofdoom,
converting 3d croods to 2d is pretty simple.

screen x = ( x * eye) / ( z + eye )
screen y = ( y * eye ) / ( z + eye )

eye is the dist the viewer is from the screen.

[teoryn]

Very cool. Do models have to have every line hand entered?

[tr1p1ea]

Well, atm it will just read an array of values and draw the lines. An example is:

Code: Select all

CubeModel:
	.dw 12					; Number of lines in model

	.db 10,10,10,-10,10,10			; x3D1, y3D1, z3D1, x3D2, y3D2, z3D2
	.db -10,10,10,-10,10,-10
	.db -10,10,-10,10,10,-10
	.db 10,10,-10,10,10,10

	.db 10,-10,10,-10,-10,10
	.db -10,-10,10,-10,-10,-10
	.db -10,-10,-10,10,-10,-10
	.db 10,-10,-10,10,-10,10

	.db 10,10,10,10,-10,10
	.db -10,10,10,-10,-10,10
	.db -10,10,-10,-10,-10,-10
	.db 10,10,-10,10,-10,-10

[DarkAuron]

Maybe you should make a model editor, tr1p. That'd be awesome.. a 3d modeler on the calc

[Jim e]

An on-clac modeler, now that would be some awsome code. That matt 3d designer is kinda tough to work with. I ended up writing 53 lines worth of croods on paper just to make a plane. I think I'll stick cubes till something better comes along.
Man, PAPER, what is this the dark ages, forced to use papyrus. poor trees.

[Stickmanofdoom]

Thanks for the math, jim e. I'll see what I can do with it.

[Duck]

Looks nifty. I see the coordinates are 1 byte, that must have eased coding.

Do you know how fast/slow it is against that 3d engine in the making? I think I forgot the name of it.