3dx后缀的文件是用3DMAX软件打开吗?

[cmjust]

我本人对3DMAX不太懂,有一个文件是3DX的后缀,我以为是3DMAX的文件,但是拿本软件打不开,有谁告诉我一下,怎样打开这个文件.谢谢!

[nba23]

3DX格式文件是3dmax啊,
怎么会打不开,
会不会是你的软件有问题?
你那文件有多大,
能不能发过来让我试下

[cmjust]

3DMAX生成的文件的后缀不是.MAX吗?

[cmjust]

能告诉我还需要安装什么插件吗?我用3DMAX不能打开次文件,而且在3DMAX保存文件中只有.MAX类型的文件.

[nba23]

3DMAX可以生成不止一种格式啊
平进我们在一些3D网站下载的模型都是3DX格式的

[fivestars070]

.3dx根本不是3dsmax支持的格式,至少不是本身的,如果是也是插件的

[zhangchaokun]

是不是你的3DMAX的版本低，而你的文件版本高。

[fivestars070]

This file is for programmers that would like to use this file

format, to include them into their programs/demos.

The purpose of this new object format is to provide an optimised

object, for the different displaying modes, with expansion possi-

bilities, and the needed informations for 3d-clipping, animation,

and so on. The comments are preceded by a semi-colon:





;Here is the explanation of the different fileds:

;the length of the fields is given in bytes, in brackets.



"3DX01" + '\0', Null terminated identifier. (6)



;Now we got three different descriptions of the object, depending

;on the distance viewer-object: there is no point of drawing

;120 faces that are not bigger than one pixel, because the object

;is too far away.



;Short range description:

NOBJS_0 How many objects are there? (2)

{

NAME, A null terminated name for the object

len(name + null char) <= 15 (15)

NPTS, How many 3d points are there? (2)

NFFCS, How many faces are there for the shaded faces

representation? (2)

NWFCS, How many faces are there for the wireframe

representation? (2)



;The faces can have any number of vertices, they can be triangles,

;squares,... so we need to know, to know exactly how big the memory

;allocation should be, how big the sum of the number of vertices of

;every face is:

; if VFi,VWi is the number of vertices of the ith face for the

; shaded representation resp. the wireframe representation, then we

; need:

NFOFFS, = VF1+VF2+...VFn , n=NFFCS (2)

NWOFFS, = VW1+VW2+...VWn , n=NWFCS (2)



;Boundings of the object:

XMAX,XMIN,YMAX,YMIN,ZMAX,ZMIN, (2 each=12)



;Coordinates (=Crd.) of the gravity center of the object:

[Xg,Yg,Zg], (2 each=6)



;Crd. of the three light sources:

[Xl,Yl,Zl]*3, (6*3=18)



;Crd. of the points of the object (points table):

[X,Y,Z]*NPTS, (6*NPTS)



;Description of the shaded faces:

[

COL, coulour of the face (2)

NOFFS, # of vertices in the face (2)



;Here we have the description of the polygon. the ith OFFSET is the offset

;in the points table of the ith vertex.

;!!! Important !!! OFFSET is the offset of the *point* not the

;offset of the first coordinate:

; x1,y1,z1 <---- OFFSET == 0

; x2,y2,z2 <---- OFFSET == 1, and not equal 6 (6 bytes further)!

(OFFSET)*NFOFFS, (2*NFOFFS)

(Nx,Ny,Nz), Normal vector of the face (2*3=6)

(Xg,Yg,Zg), Gravity center of the face (2*3=6)

]*NFFCS,



;Description of the wireframe faces:

[

NOFFS, # of vertices in the face (2)



;Here we need to know, for each vertex in the face, if there has to be

;a drawn line from the actual point to the next point in the list.

;Ex:

; 1 2

; *---------------------------------*

; / Face 1 \

; / \

; 4*--This line should only be drawn once--*3

; / /

; / Face 2 /

; *---------------------------------------*

;From point 3 to point 4, there'll be no line for face 1, so here,

;CONT=0 on point 3. "no line from 3 to 4"

;Description of Face1:

;NOFFS==4

;(OFFSET==1,CONT==1)

;(OFFSET==2,CONT==1)

;(OFFSET==3,CONT==1)

;(OFFSET==4,CONT==0)

;and every line of Face2 is drawn.

;Of course, on situations like this:

; 1 2

; *-----*---------------------------------*

; /Face / Face 1 \

; / 3 / \

;*----4*--This line should only be drawn once--*3

; / /

; / Face 2 /

; *---------------------------------------*

;instead of having "no line from 3 to 4" and "no line from 4 to 1",

;the OFFSET 4 will simply not be present, so the face 1 will be:

;Description of Face1:

;NOFFS==3

;(OFFSET==1,CONT==1)

;(OFFSET==2,CONT==1)

;(OFFSET==3,CONT==0)

;OFFSET has the same meaning as above.

;and every line of Face2 and Fcae3 is drawn.

(OFFSET,CONT)*NWOFFS (4*NWOFFS)

]*NWFCS



;This additional zone is always structured this way (if not empty,

;that is, its length is 0):



additional zone=

[

-LEN length of additional zone (4)

-a 9 BYTES, null terminated string identifier:

("BSPTREE" , "MAPTGA" ,"" (if empty)...) (9)

-LEN bytes actual description of the zone

-[additional zone] ;next additional zone (might be empty)

]

}*NOBJS_0



;The description of the medium and the long range objects is the same.

NOBJS_1,

{...}*NOBJS_1

NOBJS_2,

{...}*NOBJS_2

这是我在国外的网站上找到的对.3dx格式的解释，不知你能否看懂