一点对m3g模型文件解析的工作，希望有帮助

wingser · 发表于 2005-6-11 00:01:00

因为最近不会在m3g文件上继续工作，把之前一点少少的工作放出来，希望可以有点帮助

/*
* Main.java
*
* Created on 2005年5月15日, 下午11:41
*/
package m3gloader;
import java.io.*;
import java.util.zip.*;
/**
*
* @author admin
*/
public class Main {
/** Creates a new instance of Main */
public Main() {
}
/**
* @param args the command line arguments
*/
public static void main(String[] args) throws Exception {
File f=new File("otokka_jump2.m3g");
System.out.println("\nFile \""+f.toString()+"\" exists? : "+f.exists());
if(!f.exists())
err("File "+f.toString()+" does not exists!");
FileInputStream fis=new FileInputStream(f);
M3GDataInputStream dis=new M3GDataInputStream(fis);
System.out.println("====== File identifier ======");
byte[] fileIdentifier=new byte[12];
if(dis.available()>=12){
dis.read(fileIdentifier);
System.out.println("File Identifier is: ");
for(int l=0;l<fileIdentifier.length;l++)
System.out.print(fileIdentifier[l]+" ");
System.out.print("\nFile Identifier characters is: \n");
System.out.println(new String(fileIdentifier));
System.out.println("====== end of file identifier ======\n");
} else
err("File Identifier Error! ");
/*
Section 0: Header Object
*/
System.out.println("====== Section 0: Header Object ======");
if(dis.available()<5)
err("Section 0: Header error! ");
System.out.println("CompressionScheme: "+dis.readByte());
UInt32 totalSectionLength=dis.readUInt32();
//We have read 5 bytes.So we just check if (totalSectionLength.longValue()-5) is available.
if(dis.available()<totalSectionLength.longValue()-5)
err("Section 0: Content error! ");
System.out.println("TotalSectionLength: "+totalSectionLength);
System.out.println("UncompressedLength: "+dis.readUInt32());
System.out.println("$$$$$$ Objects $$$$$$");
System.out.println("ObjectType: "+dis.readByte());
//length1 is the length of 1st object we load, length2 is the 2nd.
UInt32 length1=dis.readUInt32();
System.out.println("Length: "+length1);
System.out.print("VersionNumber: ");
System.out.print(dis.readByte()+".");
System.out.println(dis.readByte());
System.out.println("hasExternalReferences: "+dis.readBoolean());
System.out.println("TotalFileSize: "+dis.readUInt32());
System.out.println("ApproximateContentSize: "+dis.readUInt32());
/*
Head Object contain:
Byte[2] VersionNumber
Boolean hasExternalReferences
UInt32 TotalFileSize
UInt32 ApproximateContentSize
String AuthoringField
So AuthoringField's length is object (length-11)
*/
byte[] authoringField=new byte[length1.intValue()-11];
dis.readFully(authoringField);
System.out.println("------ AuthoringField ------");
System.out.println(new String(authoringField,"UTF-8"));
System.out.println("------ End of AuthoringField ------");
System.out.println("$$$$$$ End of Objects $$$$$$");
System.out.println("Checksum: "+dis.readUInt32());
System.out.println("====== End of Section 0: Header Object ======\n");
//new section
System.out.println(dis.readByte());
System.out.println(dis.readUInt32());
System.out.println(dis.readUInt32());
M3GInflaterInputStream iis=new M3GInflaterInputStream(fis);
System.out.println(iis.read());
System.out.println(iis.readUInt32());
/////////////////////a camera
//user id
System.out.println(iis.readUInt32());
//animation track
System.out.println(iis.readUInt32());
//user para
System.out.println(iis.readUInt32());
//hasComponentTransform;
System.out.println(iis.read());
//hasGeneralTransform;
System.out.println(iis.read());
//enable rendering
System.out.println(iis.read());
// enablePicking;
System.out.println(iis.read());
// alphaFactor;
System.out.println(iis.read());
//scope;
System.out.println(iis.readUInt32());
//hasAlignment;
System.out.println(iis.read());
//h
System.out.println(iis.read());
System.out.println(iis.readUInt32());
System.out.println(iis.readUInt32());
System.out.println(iis.readUInt32());
System.out.println(iis.readUInt32());
/////////////next object/////////////////////
//image 2d
System.out.println(iis.read());
System.out.println(iis.readUInt32());
//user id
System.out.println(iis.readUInt32());
//animation tracks
System.out.println(iis.readUInt32());
//user object
System.out.println(iis.readUInt32());
//format
System.out.println(iis.read());
//is mutable
System.out.println(iis.read());
//width
System.out.println(iis.readUInt32());
//height
System.out.println(iis.readUInt32());
// palette;
System.out.println(iis.read());
//pixels;
System.out.println(iis.read());
/*
for(int l=0;l<4894;l++)
iis.read();
System.out.println(iis.read());
System.out.println(iis.readUInt32());
for(int l=0;l<40;l++)
iis.read();
System.out.println(iis.read());
System.out.println(iis.readUInt32());
for(int l=0;l<66;l++)
iis.read();
System.out.println(iis.read());
System.out.println(iis.readUInt32());
for(int l=0;l<66;l++)
iis.read();
System.out.println(iis.read());
System.out.println(iis.readUInt32());
for(int l=0;l<66;l++)
iis.read();
System.out.println(iis.read());
System.out.println(iis.readUInt32());
for(int l=0;l<41;l++)
iis.read();
System.out.println(iis.read());
System.out.println(iis.readUInt32());
for(int l=0;l<29;l++)
iis.read();
System.out.println(iis.read());
System.out.println(iis.readUInt32());
for(int l=0;l<25;l++)
iis.read();
System.out.println(iis.read());
System.out.println(iis.readUInt32());
for(int l=0;l<68;l++)
iis.read();
System.out.println(iis.read());
System.out.println(iis.readUInt32());
*/
dis.close();
fis.close();
}
public static void err(String msg){
System.out.println("\n**** An error has occured!!! The program was terminated!!! The errot infomation is: ");
System.out.println(msg+"\n");
System.exit(0);
}
static class M3GDataInputStream extends DataInputStream{
public M3GDataInputStream(InputStream in){
super(in);
}
public UInt32 readUInt32() throws IOException {
int ch1 = in.read();
int ch2 = in.read();
int ch3 = in.read();
long ch4 = in.read();
//System.out.println(ch1+" "+ch2+" "+ch3+" "+ch4);
if ((ch1 | ch2 | ch3 | ch4) < 0)
throw new EOFException();
return new UInt32((ch1 << 0) + (ch2 << 8) + (ch3 << 16) + (ch4 << 24));
}
}
static class M3GInflaterInputStream extends InflaterInputStream{
public M3GInflaterInputStream(InputStream in){
super(in,new Inflater(),32);
}
public UInt32 readUInt32() throws IOException {
int ch1 = super.read();
int ch2 = super.read();
int ch3 = super.read();
long ch4 = super.read();
//System.out.println(ch1+" "+ch2+" "+ch3+" "+ch4);
if ((ch1 | ch2 | ch3 | ch4) < 0)
throw new EOFException();
return new UInt32((ch1 << 0) + (ch2 << 8) + (ch3 << 16) + (ch4 << 24));
}
}
static class Float32{
}
static class UInt32{
private long value;
public UInt32(long value){
this.value=value;
Integer f=new Integer(2);
}
public long longValue(){
return value;
}
public int intValue(){
if(value > 2147483647 && value < -2147483648)
throw new ClassCastException();
return (int)value;
}
public String toString(){
return Long.toString(value);
}
}
}

复制代码

[em10] [em10]

wingser · 发表于 2005-6-11 00:02:00

与之匹配的m3g模型
http://forweb.myrice.com/otokka_jump2.m3g

伊拉虾伊 · 发表于 2005-6-11 19:28:00

支持，有备无患，哈哈

akid · 发表于 2005-6-16 22:30:00

为什么要做这个呢？似乎没什么大用吧现在最新的3dmax可以导出.m3g了然后直接放在手机上用

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一点对m3g模型文件解析的工作，希望有帮助

Re: 一点对m3g模型文件解析的工作，希望有帮助

Re:一点对m3g模型文件解析的工作，希望有帮助

Re:一点对m3g模型文件解析的工作，希望有帮助