Author Topic: [Lua] Tiny3D  (Read 26586 times)

0 Members and 1 Guest are viewing this topic.

Offline Loulou 54

  • LV4 Regular (Next: 200)
  • ****
  • Posts: 165
  • Rating: +39/-0
    • View Profile
    • Mes programmes sur TI bank.
Re: [Lua] Tiny3D
« Reply #15 on: September 25, 2011, 10:20:33 am »
Quote
but I have to train with 3D
lol %)
Er... What's fun ?
Indeed you've never made 3D.. x)
http://ourl.ca/12034
Some of my program available here.. :)
http://ti.bank.free.fr/index.php?mod=archives&ac=voir2&id=1471

     

Offline Chockosta

  • LV6 Super Member (Next: 500)
  • ******
  • Posts: 447
  • Rating: +169/-6
    • View Profile
Re: [Lua] Tiny3D
« Reply #16 on: September 25, 2011, 11:29:33 am »
:)

Actually, raycasting is not real 3D.
Moreover, I followed a tutorial to do my raycaster whereas I'm doing tiny3D without any help.

EDIT :
Now it's also possible to draw 3D function...
« Last Edit: September 28, 2011, 08:47:34 am by Chockosta »

Offline Adriweb

  • Editor
  • LV10 31337 u53r (Next: 2000)
  • **********
  • Posts: 1708
  • Rating: +229/-17
    • View Profile
    • TI-Planet.org
Re: [Lua] Tiny3D
« Reply #17 on: September 26, 2011, 01:57:34 pm »
nice ! :D
My calculator programs
TI-Planet.org co-admin.
TI-Nspire Lua programming : Tutorials  |  API Documentation

Offline Scipi

  • Omni Kitten Meow~ =^ω^=
  • LV10 31337 u53r (Next: 2000)
  • **********
  • Posts: 1547
  • Rating: +192/-3
  • Meow :3
    • View Profile
    • ScipiSoftware
Re: [Lua] Tiny3D
« Reply #18 on: September 26, 2011, 02:23:46 pm »
How do you use this library? Like, how should you store the data to render a 3D object?

Imma Cat! =^_^= :3 (It's an emoticon now!)
Spoiler For Things I find interesting:
Spoiler For AI Programming:
Spoiler For Shameless advertising:

Spoiler For OldSig:





Spoiler For IMPORTANT NEWS!:
Late last night, Quebec was invaded by a group calling themselves, "Omnimaga". Not much is known about these mysterious people except that they all carried calculators of some kind and they all seemed to converge on one house in particular. Experts estimate that the combined power of their fabled calculators is greater than all the worlds super computers put together. The group seems to be holding out in the home of a certain DJ_O, who the Omnimagians claim to be their founder. Such power has put the world at a standstill with everyone waiting to see what the Omnimagians will do...

Wait... This just in, the Omnimagians have sent the UN a list of demands that must be met or else the world will be "submitted to the wrath of Netham45's Lobster Army". Such demands include >9001 crates of peanuts, sacrificial blue lobsters, and a wide assortment of cherry flavored items. With such computing power stored in the hands of such people, we can only hope these demands are met.

In the wake of these events, we can only ask, Why? Why do these people make these demands, what caused them to gather, and what are their future plans...

Offline Spyro543

  • LV9 Veteran (Next: 1337)
  • *********
  • Posts: 1189
  • Rating: +74/-3
    • View Profile
Re: [Lua] Tiny3D
« Reply #19 on: September 26, 2011, 02:27:33 pm »
Heh, tesseract. Love it  :D

Offline Levak

  • LV9 Veteran (Next: 1337)
  • *********
  • Posts: 1002
  • Rating: +208/-39
    • View Profile
    • My website
Re: [Lua] Tiny3D
« Reply #20 on: September 26, 2011, 02:32:51 pm »
How do you use this library? Like, how should you store the data to render a 3D object?
Two ways I guess :
1) library, like I made for Make3D
2) Using its source code
I do not get mad at people, I just want them to learn the way I learnt.
My website - TI-Planet - iNspired-Lua

Offline Chockosta

  • LV6 Super Member (Next: 500)
  • ******
  • Posts: 447
  • Rating: +169/-6
    • View Profile
Re: [Lua] Tiny3D
« Reply #21 on: September 26, 2011, 02:33:09 pm »
For now, to render 3D object with tiny3D library, you have to send them to the render() function in the Lua code.
I've made a 3D-viewer in which you can modify vertices and faces with TI-Nspire-Basic. (You can also modify them with the spreadsheet application)
I'll release it soon...
« Last Edit: September 26, 2011, 02:33:32 pm by Chockosta »

Offline Scipi

  • Omni Kitten Meow~ =^ω^=
  • LV10 31337 u53r (Next: 2000)
  • **********
  • Posts: 1547
  • Rating: +192/-3
  • Meow :3
    • View Profile
    • ScipiSoftware
Re: [Lua] Tiny3D
« Reply #22 on: September 26, 2011, 04:02:13 pm »
Well, what I meant was, I assume you send two tables to the render() function, one for vertices and one for edges. How are those tables formatted?

Suppose I had 8 points in space to make a cube:

[0,0,0][1,0,0][,1,1,0][0,1,0]
[0,0,1][1,0,1][,1,1,1][0,1,1]

How should that data look inside the tables that go to the render function?

Imma Cat! =^_^= :3 (It's an emoticon now!)
Spoiler For Things I find interesting:
Spoiler For AI Programming:
Spoiler For Shameless advertising:

Spoiler For OldSig:





Spoiler For IMPORTANT NEWS!:
Late last night, Quebec was invaded by a group calling themselves, "Omnimaga". Not much is known about these mysterious people except that they all carried calculators of some kind and they all seemed to converge on one house in particular. Experts estimate that the combined power of their fabled calculators is greater than all the worlds super computers put together. The group seems to be holding out in the home of a certain DJ_O, who the Omnimagians claim to be their founder. Such power has put the world at a standstill with everyone waiting to see what the Omnimagians will do...

Wait... This just in, the Omnimagians have sent the UN a list of demands that must be met or else the world will be "submitted to the wrath of Netham45's Lobster Army". Such demands include >9001 crates of peanuts, sacrificial blue lobsters, and a wide assortment of cherry flavored items. With such computing power stored in the hands of such people, we can only hope these demands are met.

In the wake of these events, we can only ask, Why? Why do these people make these demands, what caused them to gather, and what are their future plans...

Offline Chockosta

  • LV6 Super Member (Next: 500)
  • ******
  • Posts: 447
  • Rating: +169/-6
    • View Profile
Re: [Lua] Tiny3D
« Reply #23 on: September 27, 2011, 01:08:36 pm »
New ! Color is supported (and some optimizations) ! I think that it's finished...
New code :
Spoiler For Spoiler:
Code: [Select]
--Lua Tiny3D - By Loic Pujet

function multiplyMatrix(matrix,vector)
 local x=matrix[1][1]*vector[1]+matrix[1][2]*vector[2]+matrix[1][3]*vector[3]
 local y=matrix[2][1]*vector[1]+matrix[2][2]*vector[2]+matrix[2][3]*vector[3]
 local z=matrix[3][1]*vector[1]+matrix[3][2]*vector[2]+matrix[3][3]*vector[3]
 return x,y,z
end

function rotate(vertices,angle,x,y,z)
 local sum=x+y+z
 x,y,z=x/sum,y/sum,z/sum
 local c,s=math.cos(angle),math.sin(angle)
 local matrix={{x*x+(1-x*x)*c,x*y*(1-c)-z*s,x*z*(1-c)+y*s},{x*y*(1-c)+z*s,y*y+(1-y*y)*c,y*z*(1-c)-x*s},{x*z*(1-c)-y*s,y*z*(1-c)+x*s,z*z+(1-z*z)*c}}
 for i,e in pairs(vertices) do
  vertices[i]={multiplyMatrix(matrix,e)}
 end
end

function translate(vertices,x,y,z)
 for i,e in pairs(vertices) do
  vertices[i]={e[1]+x,e[2]+y,e[3]+z}
 end
end

function scale(vertices,x,y,z)
 for i,e in pairs(vertices) do
  vertices[i]={e[1]*x,e[2]*y,e[3]*z}
 end
end

function width() return platform.window:width() end
function height() return platform.window:height() end

function reverseTable(tbl)
 local tbl2={}
 for i,e in ipairs(tbl) do
  tbl2[#tbl-i+1]=e
 end
 return tbl2
end

function replaceFaces(tbl1,tbl2,faces)
 local faces2={}
 for i,e in pairs(tbl1) do
  for j,e2 in pairs(tbl2) do
   if e2 then
    if e==e2 then
     table.insert(faces2,faces[j])
     tbl2[j]=nil
    end
   end
  end
 end
 return reverseTable(faces2)
end

function sortFaces(vertices,faces)
 local faces2,distTbl,facesTbl={},{},{}
 local middle={}
 local dist,xsum,ysum,zsum=0,0,0,0
 for i,e in pairs(faces) do
  xsum,ysum,zsum=0,0,0,0
  for j,e2 in pairs(e) do
   xsum,ysum,zsum=xsum+vertices[e2][1],ysum+vertices[e2][2],zsum+vertices[e2][3]
  end
  middle={xsum/#e,ysum/#e+5,zsum/#e}
   dist=math.sqrt(middle[1]*middle[1]+middle[2]*middle[2]+middle[3]*middle[3])
  table.insert(distTbl,dist)
  table.insert(facesTbl,dist)
 end
 table.sort(distTbl)
 return replaceFaces(distTbl,facesTbl,faces)
end

function renderFaces(gc,vertices,faces,pos,mode,color)
 local polygon={}
 local faces2=sortFaces(vertices,faces)
 for i,e in pairs(faces2) do
  polygon={}
  drawPoly=true
  for j,f in pairs(faces2[i]) do
   if not pos[f] then
    drawPoly=false
   else
    table.insert(polygon,pos[f][1])
    table.insert(polygon,pos[f][2])
   end
  end
  if drawPoly then
   table.insert(polygon,pos[faces2[i][1]][1])
   table.insert(polygon,pos[faces2[i][1]][2])
   if mode==4 or mode==5 then
    gc:setColorRGB(color[1],color[2],color[3])
    gc:fillPolygon(polygon)
   end
   if mode==2 or mode==3 or mode==4 then
    gc:setColorRGB(0,0,0)
    gc:drawPolyLine(polygon)
   end
  end
 end
end

function renderVertices(gc,pos)
 gc:setColorRGB(0,0,0)
 for i,e in pairs(pos) do
  if e then
   gc:fillRect(e[1]-1,e[2]-1,3,3)
  end
 end
end

function render(gc,vertices,faces,mode,color)
 local yDist,pos=0,{}
 for i,e in pairs(vertices) do
  if e[2]>-5 then
   yDist=5/(e[2]+5)
   table.insert(pos,{e[1]*yDist*25+width()/2,height()/2-e[3]*yDist*25})
  else
   table.insert(pos,false)
  end
 end
 if mode==1 or mode==2 then
  renderVertices(gc,pos)
 end
 if mode==2 or mode==3 or mode==4 or mode==5 then
  renderFaces(gc,vertices,faces,pos,mode,color)
 end
end

HOMER-16 :
Here is how the (latest) function render works :
render(gc,vertices,faces,mode,color)
-gc is the graphic context (given in on.paint(gc))
-color is a table which contains RGB values
    ex : {200,200,200}
-mode :
    1 to render vertices only
    2 to render vertices and edges
    3 to render edges only
    4 to render edges and faces
    5 to render faces only
-vertices is a table which contains vertices pos
    ex : {{0,0,0},{1,1,1},{1,2,1},{0,1,2}}
-faces is a table which contains table of vertices.
    ex : {{1,2,3,4},{1,2,3}}

To render your cube, you should use
Code: [Select]
cubeVertices={{0,0,0},{1,0,0},{1,1,0},{0,1,0},{0,0,1},{1,0,1},{1,1,1},{0,1,1}}
cubeFaces={{1,2,3,4},{1,2,6,5},{2,3,7,6},{3,4,8,7},{4,1,5,8},{5,6,7,8}}
color={200,200,200}

function on.paint(gc)
 render(gc,cubeVertices,cubeFaces,4,color)
end

Offline Scipi

  • Omni Kitten Meow~ =^ω^=
  • LV10 31337 u53r (Next: 2000)
  • **********
  • Posts: 1547
  • Rating: +192/-3
  • Meow :3
    • View Profile
    • ScipiSoftware
Re: [Lua] Tiny3D
« Reply #24 on: September 27, 2011, 01:24:40 pm »
Thank you! That helps alot :D

Imma Cat! =^_^= :3 (It's an emoticon now!)
Spoiler For Things I find interesting:
Spoiler For AI Programming:
Spoiler For Shameless advertising:

Spoiler For OldSig:





Spoiler For IMPORTANT NEWS!:
Late last night, Quebec was invaded by a group calling themselves, "Omnimaga". Not much is known about these mysterious people except that they all carried calculators of some kind and they all seemed to converge on one house in particular. Experts estimate that the combined power of their fabled calculators is greater than all the worlds super computers put together. The group seems to be holding out in the home of a certain DJ_O, who the Omnimagians claim to be their founder. Such power has put the world at a standstill with everyone waiting to see what the Omnimagians will do...

Wait... This just in, the Omnimagians have sent the UN a list of demands that must be met or else the world will be "submitted to the wrath of Netham45's Lobster Army". Such demands include >9001 crates of peanuts, sacrificial blue lobsters, and a wide assortment of cherry flavored items. With such computing power stored in the hands of such people, we can only hope these demands are met.

In the wake of these events, we can only ask, Why? Why do these people make these demands, what caused them to gather, and what are their future plans...

Offline DJ Omnimaga

  • Clacualters are teh gr33t
  • CoT Emeritus
  • LV15 Omnimagician (Next: --)
  • *
  • Posts: 55943
  • Rating: +3154/-232
  • CodeWalrus founder & retired Omnimaga founder
    • View Profile
    • Dream of Omnimaga Music
Re: [Lua] Tiny3D
« Reply #25 on: September 27, 2011, 01:55:26 pm »
Looks nice Chokosta. I wonder if eventually it could be used for simple models in games like Space Dementia?

Offline Chockosta

  • LV6 Super Member (Next: 500)
  • ******
  • Posts: 447
  • Rating: +169/-6
    • View Profile
Re: [Lua] Tiny3D
« Reply #26 on: September 27, 2011, 02:21:09 pm »
That's the point of this engine : games.
I'll try, and I will see if it's fast enough...

Offline DJ Omnimaga

  • Clacualters are teh gr33t
  • CoT Emeritus
  • LV15 Omnimagician (Next: --)
  • *
  • Posts: 55943
  • Rating: +3154/-232
  • CodeWalrus founder & retired Omnimaga founder
    • View Profile
    • Dream of Omnimaga Music
Re: [Lua] Tiny3D
« Reply #27 on: September 27, 2011, 02:30:26 pm »
That's good to hear. I hope you don't have too much troubles with speed. :) I think Space Dementia ran at about 5 FPS and was very playable.

Offline aeTIos

  • Nonbinary computing specialist
  • LV12 Extreme Poster (Next: 5000)
  • ************
  • Posts: 3915
  • Rating: +184/-32
    • View Profile
    • wank.party
Re: [Lua] Tiny3D
« Reply #28 on: September 28, 2011, 09:53:24 am »
:O
just :O
I'm not a nerd but I pretend:

Offline calc84maniac

  • eZ80 Guru
  • Coder Of Tomorrow
  • LV11 Super Veteran (Next: 3000)
  • ***********
  • Posts: 2912
  • Rating: +471/-17
    • View Profile
    • TI-Boy CE
Re: [Lua] Tiny3D
« Reply #29 on: September 28, 2011, 12:20:39 pm »
On my Clickpad.
Which one is the slowest ?
The CX =)

Computer Software > ClickPad/TouchPad > CX
I thought CX was faster because it didn't have to do grayscale conversion. Or is that just for gc:drawImage()?
"Most people ask, 'What does a thing do?' Hackers ask, 'What can I make it do?'" - Pablos Holman