3DS MAX标准文本导出格式ASE的文件结构

3DS MAX

标准文本导出格式

ASE

的文件结构

如果 你正在寻找它的几何体存放在哪的话，事实上，这不是描述具体信息层级关系的图示，而是类似

< br>XML

的一种

存储规范

，它

具有

独立标签

和

嵌 套标签

，独立标签有

名称

和

，而嵌套标签不仅可以

嵌套子标签

嵌套

“

子嵌套标 签

”

，如此递归下去。

这种格式固然带 来很大的灵活性，但是非常浪费时间。需要对它们

全部解套然后利用一致的算法

，提供一个匹配标签名进行标签

取出和迭代。

*3DSMAX_ASCIIEXPORT 200

*COMMENT

版本

2.00 - Wed Sep 19 22:16:39 2007

*SCENE {

*SCENE_FILENAME

*SCENE_FIRSTFRAME 0

*SCENE_LASTFRAME 100

*SCENE_FRAMESPEED 30

*SCENE_TICKSPERFRAME 160

*SCENE_BACKGROUND_STA

TIC 0.00000000 0.00000000 0.00000000

*SCENE_AMBIENT_STA

TIC 0.00000000 0.00000000 0.00000000

}

第二行使用了双引号对值进行了限定，避免被分割成子单元。我们可以假设

*SCENE

块还可以内嵌子块，假如存在，便可将此子

块作 为独立单元进行递归分解。直到所有嵌套子块全部被遍历。

* QUICK NOTES *

This tutorial shows how to load a .Ase file.

An ASE file is a 3D Studio Max ASCII file that saves all the information in a text

file instead of in binary.

The good thing about this is that it's easy to read in, as well as easy to change without having the software. The bad thing is

that it's a HUGE file size, it takes a lot longer to read in, no other programs support it and it can't even be imported back into 3D

Studio Max.

I

would recommend looking at this tutorial before you look at the 3DS tutorial though.

That way you can see

what is actually being read in.

Let me mention that the math functions above are not so important and don't need to be in this file.

I wanted to show how to

calculate vertex normals so your models would have some excellent lighting.

You most likely have functions alre

ady that do

the basics so I encourage you to just use those.

This will cut down the code significantly.

* What's An STL (Standard Template Library) Vector? *

Let me quickly explain the STL vector for those of you who are not familiar with them.

To use a vector you must include and use the std namespace: using namespace std;

A vector is an array based link list.

It allows you to dynamically add and remove nodes.

This is a template class so it can be a list of ANY type.

To create a vector of type

vector myIntList;

Now you can add a integer to the dynamic array by saying: _back(10);

or you can say:

_back(num);.

The more you push back, the larger

your array gets.

You can index the vector like an array.

myIntList[0] = 0;

To get rid of a node you use the pop_back() function.

To clear the vector use clear().

It frees itself so you don't need to worry about it, except if you have data

structures that need information freed from inside them, like our objects.

Let's go over

some

of

the

format

of

the .Ase

file.

I

will

only

address

the

information

that

we

really

care

about

for object

loading.

The rest is Scene stuff.

I created a single box around the origin that had a texture map over it to show

the simplest and smallest amount of data.

This next block is the material block.

This holds all the info on the materials.

*MATERIAL_LIST {

// This is the tag for the start of the material info

*MATERIAL_COUNT 1

// This tells us how many materials there are

*MATERIAL 0 {

// This is the material ID that the next data is refering too.

*MATERIAL_NAME

// The material name

*MATERIAL_CLASS

*MATERIAL_AMBIENT 0.1791 0.0654

0.0654

*MATERIAL_DIFFUSE 0.5373

0.1961

0.1961

// The color of the object

*MATERIAL_SPECULAR 0.9000

0.9000

0.9000

*MATERIAL_SHINE 0.2500

*MATERIAL_SHINESTRENGTH 0.0500

*MATERIAL_TRANSPARENCY 0.0000

*MATERIAL_WIRESIZE 1.0000

*MATERIAL_SHADING Blinn

*MATERIAL_XP_FALLOFF 0.0000

*MATERIAL_SELFILLUM 0.0000

*MATERIAL_FALLOFF In

*MATERIAL_XP_TYPE Filter

*MAP_DIFFUSE {

*MAP_NAME

*MAP_CLASS

*MAP_SUBNO 1

*MAP_AMOUNT 1.0000

*BITMAP

*MAP_TYPE Screen

// This is the file name for the texture

*UVW_U_OFFSET 0.0000

*UVW_V_OFFSET 0.0000

*UVW_U_TILING 1.0000

*UVW_V_TILING 1.0000

*UVW_ANGLE 0.0000

*UVW_BLUR 1.0000

// This is the U offset for the tile

// This is the V offset for the tile

// This is the U tiling ratio (1 is standard)

// This is the V tiling ratio (1 is standard)

*UVW_BLUR_OFFSET 0.0000

*UVW_NOUSE_AMT 1.0000

*UVW_NOISE_SIZE 1.0000

*UVW_NOISE_LEVEL 1

*UVW_NOISE_PHASE 0.0000

*BITMAP_FILTER Pyramidal

}

}

}

*GEOMOBJECT {

*NODE_TM {

}

*NODE_NAME

*INHERIT_POS 0 0 0

*INHERIT_ROT 0 0 0

*INHERIT_SCL 0 0 0

*TM_ROW0 1.0000

*TM_ROW1 0.0000

// Once again, this is the objects name

// This tag let's us know that objects are next

// This is the object name

*NODE_NAME

0.0000

0.0000

1.0000

0.0000

*TM_ROW2 0.0000

0.0000

1.0000

*TM_ROW3 0.0000

0.0000

0.0000

*TM_POS 0.0000

0.0000

0.0000

*TM_ROTAXIS 0.0000

0.0000

0.0000

*TM_ROTANGLE 0.0000

*TM_SCALE 1.0000

1.0000

1.0000

*TM_SCALEAXIS 0.0000

0.0000

0.0000

*TM_SCALEAXISANG 0.0000

// This tells us an objects data is next

// This holds the number of vertices for this object

// This is the number of faces in this object

// The tag for the start of the vertex list

*MESH {

*TIMEVALUE 0

*MESH_NUMVERTEX 8

*MESH_NUMFACES 12

*MESH_VERTEX_LIST {

*MESH_VERTEX

0

*MESH_VERTEX

1

*MESH_VERTEX

2

-1.5000

-1.5000

0.0000

// These next 8 are the vertices.

1.5000

-1.5000

0.0000

// The first number is the index

-1.5000

1.5000

0.0000

// and the next 3 are the (X, Y, Z)