Andreas, We started working on this but with an almost complete lack of documentation it's basically trial and error (and I haven't made much progress). If you've got more information about how all this works I'd be glad to add support to our loader.
- John Wright Starfire Research Andreas Jerke wrote: > > Hi All, > > I have testet several importers for 3DS files and > all don`t support correct reading of chunk 0x4160 . > This chunk contains 12 float values describing an > 4*3 matrix, with which all vertices of an object > must be transformed. > > Most 3DS files exported from 3DSMax contain this chunk. > > Me problem is, that the objects in my imported 3DS scene > are not in the correct position/scaling/rotation. > > I tried to implement this chunk in the > org.opentools.java3d.ThreeDSProcessor.class , > but I get wrong results. > > Does anyone know how to transform all vertices with > the matrix ? > > Does anyone know which 3DS importer supports 0x4160 ? > > Best regards, > Andreas > > extension to org.opentools.java3d.ThreeDSProcessor from > Aaron Mulder's 3DS Loader, > http://www.j3d.org/utilities/loaders/3ds/mulder.html > > <schnipp> > [...] > > case TYPE_MESH_MATRIX: > //offset for this object ! > float rmatrix[] = new float[16]; > > //read rotate/scale matrix (CORRECT ORDER ???) > rmatrix[0]=readFloat(); > rmatrix[3]=readFloat(); > rmatrix[6]=readFloat(); > > rmatrix[1]=readFloat(); > rmatrix[4]=readFloat(); > rmatrix[7]=readFloat(); > > rmatrix[2]=readFloat(); > rmatrix[5]=readFloat(); > rmatrix[8]=readFloat(); > > //read transformation vector > Point3f trans = new > Point3f(readFloat(),readFloat(),readFloat()); > > Matrix3f matrix = new Matrix3f(rmatrix); > debug("Transform all vertices with matrix > \n"+matrix); > > //center of current object, calculated from > bounding box (DO I NEED THIS ???) > Point3f center = new Point3f( > -((omaxx-ominx)/2+ominx), > -((omaxy-ominy)/2+ominy), > -((omaxz-ominz)/2+ominz) > ); > //transform all vertices, >BUGGY< > for (int i=0; i<vertices.length; i++) { > debug("before:"+vertices[i].toString()); > vertices[i].add(center); > matrix.transform(vertices[i]); > vertices[i].add(trans); > > debug("after:"+vertices[i].toString()); > } > break; > > </schnapp> > > =========================================================================== > To unsubscribe, send email to [EMAIL PROTECTED] and include in the body > of the message "signoff JAVA3D-INTEREST". For general help, send email to > [EMAIL PROTECTED] and include in the body of the message "help". =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
