Posts: 142
Threads: 6
Joined: Aug 2001
Quote:You have to write a program that imports the obj files that it exports. The obj format is actually really simple. Just open the program, create a simple cube or something, save it as an obj and open the file with notepad so you can study the way it's stored. 
That or read this document covering the format: http://www.wotsit.org/download.asp?f=w_obj
Posts: 2,404
Threads: 153
Joined: Jan 2005
Hehe.. I figured it out already.. this good enough?
http://members.aol.com/rattrapmax6/download/BlueOrb.zip
:wink:
Kevin ( x.t.r.GRAPHICS)
![[Image: 11895-r.png]](http://fileanchor.com/11895-r.png)
Posts: 1,774
Threads: 62
Joined: Aug 2003
:o
I would suggest using arrays, for simplicities sake.
This is what I did. Lightwave doesn't export Wavefront material files with the objects, so I named the surfaces of my objects like this...
002_Sphere_Surface
003_Torus_Surface
Then, in your program you just load the textures in that order...
I could post a demo of mine, if you want.
EDIT:
I realize you aren't using texures, but eve the vertices benefit greatly when using arrays.
Posts: 489
Threads: 34
Joined: Jan 2005
:o
got enough code there? :lol:
i think the idea was to write a loader that would load the file at runtime, not something that would convert the file into source ;P
ttp://m0n573r.afraid.org/
Quote:quote: "<+whtiger> you... you don't know which way the earth spins?" ... see... stupidity leads to reverence, reverence to shakiness, shakiness to... the dark side
...phear
Posts: 2,404
Threads: 153
Joined: Jan 2005
I figured to make it source, but I left it where my parser should be able to Inport OBJs.... :lol:
Yeah,.. a array would be less code.. thats what the parser does,  , But I'm just playing atm.. hehehe.. :wink:
Kevin ( x.t.r.GRAPHICS)
Posts: 442
Threads: 107
Joined: Feb 2005
he he, looks about like what i had going on, but my converter is written in Basic4GL.... i know this is a fb forum, but here's the src to my obj converter in b4gl
Code: dim infile, outfile, code$, vertex#(10000)(2), vertexCount
dim normal#(10000)(2), normalCount, faceVertexCount(10000), faceVertex(10000)(10), faceNormal(10000)(10), faceCount
dim faceToken$, i, j, k, v#(2), n#(2), count
printr "Reading input file"
infile = OpenFileRead ("files\sphere.obj")
if FileError () <> "" then
printr FileError ()
end
endif
while not EndOfFile (inFile)
code$ = lcase$ (ReadText (inFile, true))
if code$ = "v" then
for i = 0 to 2
vertex#(vertexCount)(i) = val (ReadText (inFile, false))
next
vertexCount = vertexCount + 1
elseif code$ = "vn" then
for i = 0 to 2
normal#(normalCount)(i) = val (ReadText (inFile, false))
next
normalCount = normalCount + 1
elseif code$ = "f" then
count = 0
' Read in the tokens
faceToken$ = ReadText (inFile, false)
while faceToken$ <> "" and count < 10
i = 1
while i <= len (faceToken$) and mid$(faceToken$, i, 1) <> "/"
i = i + 1
wend
faceVertex (faceCount)(count) = val (left$ (faceToken$, i - 1)) - 1
i = i + 1
while i <= len (faceToken$) and mid$(faceToken$, i, 1) <> "/"
i = i + 1
wend
faceNormal (faceCount)(count) = val (mid$ (faceToken$, i + 1, 999)) - 1
count = count + 1
faceToken$ = ReadText (inFile, false)
wend
faceVertexCount (faceCount) = count
faceCount = faceCount + 1
endif
while ReadText (inFile, false) <> "": wend
wend
CloseFile (inFile)
printr vertexCount + " vertices"
printr normalCount + " normals"
printr faceCount + " faces"
printr "Writing output file"
outfile = OpenFileWrite ("files\Generated.gb")
if FileError () <> "" then
printr FileError ()
end
endif
WriteLine (outfile, "dim a#")
WriteLine (outfile, "glEnable (GL_LIGHTING)")
WriteLine (outfile, "glEnable (GL_LIGHT0)")
WriteLine (outfile, "while true")
WriteLine (outfile, " glClear (GL_DEPTH_BUFFER_BIT or GL_COLOR_BUFFER_BIT)")
WriteLine (outfile, " glLoadIdentity ()")
WriteLine (outfile, " glTranslatef (0, 0, -10): glRotatef (25, 1, 0, 0): glRotatef (a#, 0, 1, 0)")
for i = 0 to faceCount - 1
WriteLine (outFile, " glBegin(GL_TRIANGLE_FAN)")
for j = 0 to faceVertexCount (i) - 1
v# = vertex# (faceVertex (i)(j))
n# = normal# (faceNormal (i)(j))
for k = 0 to 2
v#(k) = int (v#(k) * 10000) / 10000.0
n#(k) = int (n#(k) * 10000) / 10000.0
next
WriteLine (outFile, " glNormal3f(" + n#(0) + "," + n#(1) + "," + n#(2) + "): glVertex3f(" + v#(0) + "," + v#(1) + "," + v#(2) + ")")
next
WriteLine (outFile, " glEnd()")
next
WriteLine (outfile, " SwapBuffers ()")
WriteLine (outfile, " a# = a# + 1")
WriteLine (outfile, "wend")
CloseFile (outFile)
printr "All done"
url=http://www.random-seed.net] ![[Image: asylumsig.png]](http://www.random-seed.net/files/asylumsig.png) [/url]
Posts: 2,404
Threads: 153
Joined: Jan 2005
:lol: This is mine for FB, tho it still has alot of my debuggers REMed in it.. My personal use codes are always like this.. :lol: .. It works with Wings3D OBJ's, minus they aren't too big.. :wink:
Edit: Don't comment on any unnessisary code, I was writing it one way, and had to change alot of it which left allot of things unneeded that still works.. I didn't feel like removing all of it.. :wink:
Code: SCREEN 13
OPEN "FileName.obj" FOR INPUT AS #1
OPEN "FileName.bas" FOR OUTPUT AS #2
vert = 0
DO
IF init = 0 THEN INPUT #1, Blank1: init = 1
LINE INPUT #1, LineRender$
'###########################
'# Find number of vertices #
'###########################
IF MID$(LineRender$, 1, 1) = "#" THEN
cont = 2
FOR i = 2 TO LEN(LineRender$)
cont += 1
IF MID$(LineRender$, i, 1) = " " THEN EXIT FOR
NmTx$ += MID$(LineRender$, i, 1)
NEXT
Num = VAL(NmTx$)
'FOR i = (cont + 10) TO LEN(LineRender$)
'IF MID$(LineRender$, i, 1) = " " THEN EXIT FOR
'Fac = Fac + VAL(MID$(LineRender$, i, 1))
' NEXT
DIM SHARED Vertex(Num, 3) as string
DIM SHARED Normal(Num, 3) as string
'DIM SHARED Face(Fac, 8) as string
END IF
'###########################
'# Find value of vertices #
'###########################
IF MID$(LineRender$, 1, 2) = "v " THEN
vert = vert + 1
cont1 = 3
FOR i = 3 TO LEN(LineRender$)
cont1 = cont1 + 1
IF MID$(LineRender$, i, 1) = " " THEN EXIT FOR
IF MID$(LineRender$, 3, 1) = "-" THEN
Vertex(vert, 1) += MID$(LineRender$, i, 1)
ELSE
Vertex(vert, 1) += MID$(LineRender$, i, 1)
END IF
NEXT
cont2 = cont1
FOR i = cont2 TO LEN(LineRender$)
cont2 = cont2 + 1
IF MID$(LineRender$, i, 1) = " " THEN EXIT FOR
IF MID$(LineRender$, cont1, 1) = "-" THEN
Vertex(vert, 2) += MID$(LineRender$, i, 1)
ELSE
Vertex(vert, 2) += MID$(LineRender$, i, 1)
END IF
NEXT
cont3 = cont2
FOR i = cont3 TO LEN(LineRender$)
cont3 = cont3 + 1
IF MID$(LineRender$, i, 1) = " " THEN EXIT FOR
IF MID$(LineRender$, cont2, 1) = "-" THEN
Vertex(vert, 3) += MID$(LineRender$, i, 1)
ELSE
Vertex(vert, 3) += MID$(LineRender$, i, 1)
END IF
NEXT
END IF
'###########################
'# Find value of Normals #
'###########################
IF MID$(LineRender$, 1, 2) = "vn" THEN
norm = norm + 1
cont1 = 4
FOR i = 4 TO LEN(LineRender$)
cont1 = cont1 + 1
IF MID$(LineRender$, i, 1) = " " THEN EXIT FOR
IF MID$(LineRender$, 4, 1) = "-" THEN
Normal(norm, 1) += MID$(LineRender$, i, 1)
ELSE
Normal(norm, 1) += MID$(LineRender$, i, 1)
END IF
NEXT
cont2 = cont1
FOR i = cont2 TO LEN(LineRender$)
cont2 = cont2 + 1
IF MID$(LineRender$, i, 1) = " " THEN EXIT FOR
IF MID$(LineRender$, cont1, 1) = "-" THEN
Normal(norm, 2) += MID$(LineRender$, i, 1)
ELSE
Normal(norm, 2) += MID$(LineRender$, i, 1)
END IF
NEXT
cont3 = cont2
FOR i = cont3 TO LEN(LineRender$)
cont3 = cont3 + 1
IF MID$(LineRender$, i, 1) = " " THEN EXIT FOR
IF MID$(LineRender$, cont2, 1) = "-" THEN
Normal(norm, 3) += MID$(LineRender$, i, 1)
ELSE
Normal(norm, 3) += MID$(LineRender$, i, 1)
END IF
NEXT
END IF
'###########################
'# Find Order Ratios #
'###########################
IF MID$(LineRender$, 1, 2) = "f " THEN
cont = 3
DO
IF MID$(LineRender$, cont, 1) = "/" THEN
Number = VAL(Face$)
PRINT #2, "glNormal3f ", Normal(Number, 1), ",", Normal(Number, 2), ",", Normal(Number, 3)
'PRINT #2, "glVertex3f", Vertex(Number, 1), ",", Vertex(Number, 2), ",", Vertex(Number, 3)
cont += 2
'PRINT Face$
'SLEEP 100
Face$ = ""
'END IF
ELSEIF MID$(LineRender$, cont, 1) = " " THEN
Number = VAL(Face$)
'PRINT #2, "glNormal3f ", Normal(Number, 1), ",", Normal(Number, 2), ",", Normal(Number, 3)
PRINT #2, "glVertex3f", Vertex(Number, 1), ",", Vertex(Number, 2), ",", Vertex(Number, 3)
cont += 1
'PRINT Face$
' SLEEP 100
Face$ = ""
ELSEIF cont >= LEN(LineRender$) THEN
Face$ += MID$(LineRender$, cont, 1)
Number = VAL(Face$)
'PRINT #2, "glNormal3f ", Normal(Number, 1), ",", Normal(Number, 2), ",", Normal(Number, 3)
PRINT #2, "glVertex3f", Vertex(Number, 1), ",", Vertex(Number, 2), ",", Vertex(Number, 3)
cont += 1
'PRINT Face$
'SLEEP 100
Face$ = ""
EXIT DO
END IF
Face$ += MID$(LineRender$, cont, 1)
cont += 1
LOOP
END IF
IF INKEY$ = CHR$(255) + "X" THEN END
LOOP UNTIL EOF(1)
CLOSE #1
CLOSE #2
'FOR i = 1 TO Num
'PRINT Vertex(i, 1); Vertex(i, 2); Vertex(i, 3)
'NEXT
'FOR i = 1 TO Num
'PRINT Normal(i, 1); Normal(i, 2); Normal(i, 3)
'NEXT
PRINT "Done!!"
SLEEP
Kevin ( x.t.r.GRAPHICS)
Posts: 442
Threads: 107
Joined: Feb 2005
lol, thats awesome... maybe we should start a challange in the challanges area, it would be
"write the smallest .obj file to openGL code converter"
and ":" symbols would obviously not be alloud
:lol:
(i bet the community thought i died)
url=http://www.random-seed.net] [/url]
Posts: 2,404
Threads: 153
Joined: Jan 2005
Hehehe.. yeah, mine can be shorter.. lets see.. Heres a slim-fast version, works all the same tho.. :lol: (Removed Debugers, and needless code)
Dead? No, I figured you were at your forum.. I tried to venture there a couple of times, but my browser crashes, or basicaly stops loading when I get there..  ...
Code: SCREEN 13
OPEN "FileName.obj" FOR INPUT AS #1
OPEN "FileName.bas" FOR OUTPUT AS #2
vert = 0
DO
IF init = 0 THEN INPUT #1, Blank1: init = 1
LINE INPUT #1, LineRender$
'###########################
'# Find number of vertices #
'###########################
IF MID$(LineRender$, 1, 1) = "#" THEN
cont = 2
FOR i = 2 TO LEN(LineRender$)
cont += 1
IF MID$(LineRender$, i, 1) = " " THEN EXIT FOR
NmTx$ += MID$(LineRender$, i, 1)
NEXT
Num = VAL(NmTx$)
DIM SHARED Vertex(Num, 3) as string
DIM SHARED Normal(Num, 3) as string
END IF
'###########################
'# Find value of vertices #
'###########################
IF MID$(LineRender$, 1, 2) = "v " THEN
vert = vert + 1
cont1 = 3
FOR i = 3 TO LEN(LineRender$)
cont1 = cont1 + 1
IF MID$(LineRender$, i, 1) = " " THEN EXIT FOR
Vertex(vert, 1) += MID$(LineRender$, i, 1)
NEXT
cont2 = cont1
FOR i = cont2 TO LEN(LineRender$)
cont2 = cont2 + 1
IF MID$(LineRender$, i, 1) = " " THEN EXIT FOR
Vertex(vert, 2) += MID$(LineRender$, i, 1)
NEXT
cont3 = cont2
FOR i = cont3 TO LEN(LineRender$)
cont3 = cont3 + 1
IF MID$(LineRender$, i, 1) = " " THEN EXIT FOR
Vertex(vert, 3) += MID$(LineRender$, i, 1)
NEXT
END IF
'###########################
'# Find value of Normals #
'###########################
IF MID$(LineRender$, 1, 2) = "vn" THEN
norm = norm + 1
cont1 = 4
FOR i = 4 TO LEN(LineRender$)
cont1 = cont1 + 1
IF MID$(LineRender$, i, 1) = " " THEN EXIT FOR
Normal(norm, 1) += MID$(LineRender$, i, 1)
NEXT
cont2 = cont1
FOR i = cont2 TO LEN(LineRender$)
cont2 = cont2 + 1
IF MID$(LineRender$, i, 1) = " " THEN EXIT FOR
Normal(norm, 2) += MID$(LineRender$, i, 1)
NEXT
cont3 = cont2
FOR i = cont3 TO LEN(LineRender$)
cont3 = cont3 + 1
IF MID$(LineRender$, i, 1) = " " THEN EXIT FOR
Normal(norm, 3) += MID$(LineRender$, i, 1)
NEXT
END IF
'###########################
'# Find Order Ratios #
'###########################
IF MID$(LineRender$, 1, 2) = "f " THEN
cont = 3
DO
IF MID$(LineRender$, cont, 1) = "/" THEN
Number = VAL(Face$)
PRINT #2, "glNormal3f ", Normal(Number, 1), ",", Normal(Number, 2), ",", Normal(Number, 3)
cont += 2
Face$ = ""
ELSEIF MID$(LineRender$, cont, 1) = " " THEN
Number = VAL(Face$)
PRINT #2, "glVertex3f", Vertex(Number, 1), ",", Vertex(Number, 2), ",", Vertex(Number, 3)
cont += 1
Face$ = ""
ELSEIF cont >= LEN(LineRender$) THEN
Face$ += MID$(LineRender$, cont, 1)
Number = VAL(Face$)
PRINT #2, "glVertex3f", Vertex(Number, 1), ",", Vertex(Number, 2), ",", Vertex(Number, 3)
cont += 1
Face$ = ""
EXIT DO
END IF
Face$ += MID$(LineRender$, cont, 1)
cont += 1
LOOP
END IF
IF INKEY$ = CHR$(255) + "X" THEN END
LOOP UNTIL EOF(1)
CLOSE #1
CLOSE #2
PRINT "Done!!"
SLEEP
Kevin ( x.t.r.GRAPHICS)
Posts: 489
Threads: 34
Joined: Jan 2005
hehe, check your blue orb thread for the obj file i tried to convert, it crashed your program :lol: :lol:
ttp://m0n573r.afraid.org/
Quote:quote: "<+whtiger> you... you don't know which way the earth spins?" ... see... stupidity leads to reverence, reverence to shakiness, shakiness to... the dark side
...phear
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Open GL + Lamborghini = Cool
