Surface/vertex error with B3d loader

Archives Forums/Blitz3D Bug Reports/Surface/vertex error with B3d loader

GrumpyOldMan

(Posted 2005) [#1]

When a mesh is loaded with either LoadMesh or LoadAnimMesh there seemes to be random reassignment of vertex numbers/positions.

Below is a modified version of Peter Scheutz's B3d to XML to B3d program that shows what's recorded within the B3d file doesn't correspond to what's loaded.

;--------------------------------------------------------------
; Date: 2003.05.02
; B3D text file (xml) format Rev 0.3 by Peter Scheutz
; Based on the official Sample Blitz code for the B3D format
;
;
; This is a rough version, expect cleanups in the near future...
;
;--------------------------------------------------------------

Include "b3dfile.bb" 	; get this file from www.blitzbasic.com -> 
				; Community  -> Specs And utils -> Sample Blitz code
				
;OSB:	in b3dfile.bb change "Function b3dReadFloat()" to "Function b3dReadFloat#()"			
				
Graphics3D 800,600,32

Const B3DXML_ERROR_NONE=True
Const B3DXML_ERROR_NOFILE=-1
Const B3DXML_ERROR_FILENOTVALID =-2
Const B3DXML_ERROR_WRONGVERSION =-3


Const B3DXML_FLAG_StripTexturePaths=1
Const B3DXML_FLAG_StripBrushPaths=2
Const B3DXML_FLAG_StripNodePaths=4
Const B3DXML_FLAG_SkipVertices=8
Const B3DXML_FLAG_SkipTriangles=16
Const B3DXML_FLAG_SkipKeys=32
Const B3DXML_FLAG_SkipWeights=64

Global b3dxml_emf
Global b3dxml_xml$
Global b3dxml_xmlpos
Global b3dxml_xmlpos2
Global b3dxml_xmlpos3
Global b3dxml_kflags
Global b3dxml_brushtexcount
Global b3dxml_vflags
Global b3dxml_vtexsets
Global b3dxml_vtexsize

Global deb=WriteFile("vertex_debug.txt")

Dim verts#(1000,3)

Dim verts_l#(1000,3)

xc=LoadMesh("zombie.b3d")

surf1=GetSurface(xc,1)

num_l=CountVertices(surf1)

For ww=0 To num_l-1

verts_l(ww,1)=VertexX(surf1,ww)

verts_l(ww,2)=VertexY(surf1,ww)

verts_l(ww,3)=VertexZ(surf1,ww)

Next


			
;retval=b3d2xml( "man.b3d" ,"maplet.xml",127)


; convert a b3d to xml
retval=b3d2xml( "zombie.b3d" ,"temp.xml")

; path stripping version:
;retval=b3d2xml( "robot2.b3d" ,"robot.xml",7)




If  retval= B3DXML_ERROR_NONE Then
	msg$ = "File successfully converted"
Else
	Select retval
	
		Case B3DXML_ERROR_NOFILE
			msg$ = "Input file not found"	
		Case B3DXML_ERROR_FILENOTVALID
			msg$ = "This is not a valid B3D file"	
		Case B3DXML_ERROR_WRONGVERSION
			msg$ = "Wrong B3D version"	
	End Select


EndIf


; convert xml back to b3d
retval = xml2B3d( "temp.xml" ,"zombie2.b3d")

If  retval= B3DXML_ERROR_NONE Then
	msg$ = "File successfully converted"
Else
	Select retval
	
		Case B3DXML_ERROR_NOFILE
			msg$ = "Input file not found"	
		Case B3DXML_ERROR_FILENOTVALID
			msg$ = "This is not a valid B3D file"	
		Case B3DXML_ERROR_WRONGVERSION
			msg$ = "Wrong B3D version"	
	End Select


EndIf


; convert to xml again
;retval=b3d2xml( "test.b3d" ,"test.xml")


If  retval= B3DXML_ERROR_NONE Then
	msg$ = "File successfully converted"
Else
	Select retval
	
		Case B3DXML_ERROR_NOFILE
			msg$ = "Input file not found"	
		Case B3DXML_ERROR_FILENOTVALID
			msg$ = "This is not a valid B3D file"	
		Case B3DXML_ERROR_WRONGVERSION
			msg$ = "Wrong B3D version"	
	End Select


EndIf

;ExecFile "test.xml" ;uncomment to view in default xml viewer (usually IE)



Print msg$ 
DebugLog msg$ 


WaitKey

End



Function xml2B3d(xmlfile$,b3dfile$)

	Local xbank=CreateBank(FileSize(xmlfile$))




	File=ReadFile(xmlfile$)
	
	If Not File Return B3DXML_ERROR_NOFILE
	
	;ret=ReadBytes(xbank,file,0,BankSize(xbank))
	
	While Not Eof(File)
		b3dxml_xml$=b3dxml_xml$ + ReadLine(File)
	Wend
	
	
	CloseFile 	File	


;	DebugLog b3dxml_xml$

;	DebugLog "*************************************************"


	b3dxml_xml$ = Replace (b3dxml_xml$," >",">")
	b3dxml_xml$ = Replace (b3dxml_xml$," />","/>")



;	DebugLog b3dxml_xml$


;	WaitKey
;	End

	File=WriteFile( b3dfile$ )

	b3dSetFile( File )
	
	b3dxml_xmlpos=Instr(b3dxml_xml$,"<BB3D")-1
	TransChunks 
	
	CloseFile 	File

	Return B3DXML_ERROR_NONE	

End Function






Function bankToString$(bank)
	Local ret$

	For n=0 To BankSize(bank)-1
		ret$=ret$ + Chr$(PeekByte(bank,n))	
	Next

	Return ret$

End Function




Function xmlReadTag$()
	Local pos2
	
	b3dxml_xmlpos=Instr(b3dxml_xml$,"<",b3dxml_xmlpos+1)
	
	
	
	If b3dxml_xmlpos>0 Then
		b3dxml_xmlpos2=Instr(b3dxml_xml$," ",b3dxml_xmlpos+1)
		pos3=Instr(b3dxml_xml$,">",b3dxml_xmlpos+1)
		
		If pos3<>0 
			If b3dxml_xmlpos2<>0
				If pos3<b3dxml_xmlpos2 Then b3dxml_xmlpos2=pos3
			Else
				b3dxml_xmlpos2=pos3
			EndIf
		
		EndIf

		If b3dxml_xmlpos2<>0
			b3dxml_xmlpos3=Instr(b3dxml_xml$,">",b3dxml_xmlpos2)
			Return Mid$(b3dxml_xml$,b3dxml_xmlpos+1,b3dxml_xmlpos2-b3dxml_xmlpos-1) 
		EndIf
	EndIf

End Function

Function xmlReadInt(attrib$,defval=0)
	Local pos1,pos2
	Local lookfor$=attrib$ + "=" + Chr$(34)

	pos1=Instr(b3dxml_xml$,lookfor$,b3dxml_xmlpos)
	If Not pos1 Return defval
	pos1=pos1+Len(lookfor$)
	pos2=Instr(b3dxml_xml$,Chr$(34),pos1+1)
	
	
	 
	
	Return Int(Mid$(b3dxml_xml$,pos1,pos2-pos1))


End Function


Function xmlReadString$(attrib$)
	Local pos1,pos2
	Local lookfor$=attrib$ + "=" + Chr$(34)

	pos1=Instr(b3dxml_xml$,lookfor$,b3dxml_xmlpos)
	If Not pos1 Return
	pos1=pos1+Len(lookfor$)
	pos2=Instr(b3dxml_xml$,Chr$(34),pos1+1)
	
	

	
	
	Return Mid$(b3dxml_xml$,pos1,pos2-pos1)


End Function



Function xmlReadFloat#(attrib$,defval#=0)
	Local pos1,pos2
	Local lookfor$=attrib$ + "=" + Chr$(34)

	pos1=Instr(b3dxml_xml$,lookfor$,b3dxml_xmlpos)
	If Not pos1 Return defval

	pos1=pos1+Len(lookfor$)
	pos2=Instr(b3dxml_xml$,Chr$(34),pos1+1)
	
	;DebugLog "here. " + Mid$(b3dxml_xml$,pos1,pos2-pos1)
	
	;DebugLog "****" + Mid$(b3dxml_xml$,pos1,pos2-pos1) + "****"	
	
	Return Float(Mid$(b3dxml_xml$,pos1,pos2-pos1)) 


End Function



Function TransChunks()
	Local closing


	While b3dxml_xmlpos
		closing=False
		chunk$=xmlReadTag$()
		

		Select chunk$
		Case "BB3D"
			b3dBeginChunk(chunk$)
			b3dWriteInt xmlReadInt("version")
			
		Case "/BB3D"
			b3dEndChunk	

		Case "ANIM"
			b3dBeginChunk(chunk$)
			
			b3dWriteInt xmlReadInt("version")
			b3dWriteInt xmlReadInt("frames")
			b3dWritefloat xmlReadFloat("fps")
			
			b3dEndChunk


		Case "KEYS"
			b3dBeginChunk(chunk$)
			b3dxml_kflags=xmlReadInt("flags")
			b3dWriteInt b3dxml_kflags

		Case "/KEYS"
			b3dEndChunk
		Case "KEY"
				
			b3dWriteInt xmlReadInt("frame")

			
			If b3dxml_kflags And 1
				b3dWritefloat xmlReadFloat("xpos")
				b3dWritefloat xmlReadFloat("ypos")
				b3dWritefloat xmlReadFloat("zpos")
			EndIf
			
			If b3dxml_kflags And 2
				b3dWritefloat xmlReadFloat("xscale")
				b3dWritefloat xmlReadFloat("yscale")
				b3dWritefloat xmlReadFloat("zscale")

			EndIf
			
			If b3dxml_kflags And 4
				b3dWritefloat xmlReadFloat("wrot")
				b3dWritefloat xmlReadFloat("xrot")
				b3dWritefloat xmlReadFloat("yrot")
				b3dWritefloat xmlReadFloat("zrot")
			EndIf

		Case "TEXS"
			b3dBeginChunk(chunk$)
		Case "/TEXS"
			b3dEndChunk
		
		Case "TEXTURE"
			b3dWriteString xmlReadString("name")
			b3dWriteInt xmlReadInt("flags")
			b3dWriteInt xmlReadInt("blend")
			b3dWritefloat xmlReadFloat("xpos")
			b3dWritefloat xmlReadFloat("ypos")
			b3dWritefloat xmlReadFloat("xscale")
			b3dWritefloat xmlReadFloat("yscale")
			b3dWritefloat xmlReadFloat("rot")
		

		Case "BRUS"
			b3dBeginChunk(chunk$)
			b3dxml_brushtexcount=xmlReadInt("count")
			b3dWriteInt b3dxml_brushtexcount
		Case "/BRUS"
			b3dEndChunk
			
		Case "BRUSH"
			b3dWriteString xmlReadString("name")
			b3dWritefloat xmlReadFloat("red")
			b3dWritefloat xmlReadFloat("green")
			b3dWritefloat xmlReadFloat("blue")
			b3dWritefloat xmlReadFloat("alpha")
			b3dWritefloat xmlReadFloat("shininess")
			b3dWriteInt xmlReadInt("blend")
			b3dWriteInt xmlReadInt("fx")

														
			For n=0 To b3dxml_brushtexcount-1
				b3dWriteInt xmlReadInt("texture" + n)		
			Next		
					
		Case "NODE"
			b3dBeginChunk(chunk$)
			b3dWriteString xmlReadString("name")
			
		;	DebugLog "*" + xmlReadString("name") + "*"

		;	DebugLog "*" + xmlReadFloat("xscale") + "*"
			
			
			b3dWritefloat xmlReadFloat("xpos")
			b3dWritefloat xmlReadFloat("ypos")
			b3dWritefloat xmlReadFloat("zpos")
			
			b3dWritefloat xmlReadFloat("xscale")
			b3dWritefloat xmlReadFloat("yscale")
			b3dWritefloat xmlReadFloat("zscale")
			
			b3dWritefloat xmlReadFloat("wrot")
			b3dWritefloat xmlReadFloat("xrot")
			b3dWritefloat xmlReadFloat("yrot")
			b3dWritefloat xmlReadFloat("zrot")
		
		Case "/NODE"
			b3dEndChunk
		
		Case "MESH"
			b3dBeginChunk(chunk$)
			b3dWriteInt xmlReadInt("brush")
			
		Case "/MESH"
			b3dEndChunk

		Case "BONE"
			b3dBeginChunk(chunk$)
		
		Case "/BONE"
			b3dEndChunk
			
		Case "WEIGHT"
			b3dWriteInt xmlReadInt("vertex")
			b3dWritefloat xmlReadFloat("weight")
		
	
	
		Case "VRTS"
			b3dBeginChunk(chunk$)
			b3dxml_vflags=xmlReadInt("flags")
			b3dxml_vtexsets=xmlReadInt("texturecoordsets")
			b3dxml_vtexsize=xmlReadInt("texturecoordsize")
			
			b3dWriteInt b3dxml_vflags
			b3dWriteInt b3dxml_vtexsets
			b3dWriteInt b3dxml_vtexsize

		Case "/VRTS"
			b3dEndChunk
			
		Case "VERTEX"
		
		
			b3dWritefloat xmlReadFloat("x")
			b3dWritefloat xmlReadFloat("y")
			b3dWritefloat xmlReadFloat("z")
			
											
						
			If b3dxml_vflags And 1
				b3dWritefloat xmlReadFloat("nx")
				b3dWritefloat xmlReadFloat("ny")
				b3dWritefloat xmlReadFloat("nz")						
										
			EndIf
			If b3dxml_vflags And 2
				b3dWritefloat xmlReadFloat("r")
				b3dWritefloat xmlReadFloat("g")
				b3dWritefloat xmlReadFloat("b")
				b3dWritefloat xmlReadFloat("a")
			EndIf


			For j=1 To b3dxml_vtexsets
				
				
				If b3dxml_vtexsize>0 Then b3dWritefloat xmlReadFloat("u"+(j-1))
				If b3dxml_vtexsize>1 Then b3dWritefloat xmlReadFloat("v"+(j-1))				
				If b3dxml_vtexsize>2 Then b3dWritefloat xmlReadFloat("w"+(j-1))
						
			Next

		Case "TRIS"
			b3dBeginChunk(chunk$)
			b3dWriteInt xmlReadInt("brush")
					  
		Case "/TRIS"
			b3dEndChunk			

		Case "TRI"

			b3dWriteInt xmlReadInt("v0")
			b3dWriteInt xmlReadInt("v1")
			b3dWriteInt xmlReadInt("v2")
			
		End Select

	;	TransChunks()	;dump any subchunks
	;	If	closing Then b3dEndChunk					;exit this chunk
;		DebugLog "- " + Mid$(b3dxml_xml$,b3dxml_xmlpos3-1,1)
	
	 ; If chunk$<>"ANIM" Then emit "</" + chunk$ +  ">" 	
		
	Wend
End Function







Function b3d2xml(b3dfile$,xmlfile$,dumpflags=0)

	Local File


	File=ReadFile( b3dfile$)
	If Not File Return B3DXML_ERROR_NOFILE
	
	b3dSetFile( File )
	
	If b3dReadChunk$()<>"BB3D"  Return B3DXML_ERROR_FILENOTVALID ;RuntimeError "Invalid b3d file"
	
	version=b3dReadInt()
	
	If version/100>0 Return Return B3DXML_ERROR_WRONGVERSION ;RuntimeError "Invalid b3d file version"
	
	
	emitfile$=xmlfile$
	
	b3dxml_emf=WriteFile(emitfile$)
	
	
	emit  "<?xml version=" + Chr$(34) + "1.0"  +  Chr$(34) +  "?>"
	emit  "<BB3D version=" +  Chr$(34) + version +Chr$(34) + " exporter=" + Chr$(34) + "dumpb3dasxml version 0.1" + Chr$(34) +">"
	
	
	DumpChunks(dumpflags,"*")
	
	b3dExitChunk()
	
	emit "</BB3D>"
	
	If b3dxml_emf Then CloseFile b3dxml_emf
	
	
	CloseFile File


	Return B3DXML_ERROR_NONE

End Function



Function DumpChunks(dumpflags, tab$="" )
	tt$=tab$
	tab$=tab$+"  "
	While b3dChunkSize()
		chunk$=b3dReadChunk$()
		
		
		Select chunk$
		Case "ANIM"
	
			flags=b3dReadInt()
			n_frames=b3dReadInt()
			fps=b3dReadFloat()
			
			out$=BeginTag$("ANIM")
			out$=AddIntegerAttrib(out$,"flags",flags)
			out$=AddIntegerAttrib(out$,"frames",n_frames)
			out$=AddFloatAttrib(out$,"fps",fps)																							
			out$ = CloseAndEndTag(out$)				
			emit out$			
			
						
		Case "KEYS"
		
			flags=b3dReadInt()

			out$=BeginTag$("KEYS")
			out$=AddIntegerAttrib(out$,"flags",flags)																						
			out$ = CloseTag(out$)				
			emit out$			
			

			sz=4
			If flags And 1 sz=sz+12
			If flags And 2 sz=sz+12
			If flags And 4 sz=sz+16
			n_keys=b3dChunkSize()/sz
			If n_keys*sz=b3dChunkSize() 
			
				While b3dChunkSize()
					frame=b3dReadInt()
						
					out$=BeginTag$("KEY")
					out$=AddIntegerAttrib(out$,"frame",frame)
					
					
					If flags And 1
						key_px#=b3dReadFloat()
						key_py#=b3dReadFloat()
						key_pz#=b3dReadFloat()
						
						out$=AddFloatAttrib(out$,"xpos",key_px)
						out$=AddFloatAttrib(out$,"ypos",key_py)
						out$=AddFloatAttrib(out$,"zpos",key_pz)				
						
					EndIf
					
					If flags And 2
						key_sx#=b3dReadFloat()
						key_sy#=b3dReadFloat()
						key_sz#=b3dReadFloat()

						out$=AddFloatAttrib(out$,"xscale",key_sx)
						out$=AddFloatAttrib(out$,"yscale",key_sy)
						out$=AddFloatAttrib(out$,"zscale",key_sz)

					EndIf
					
					If flags And 4
						key_rw#=b3dReadFloat()
						key_rx#=b3dReadFloat()
						key_ry#=b3dReadFloat()
						key_rz#=b3dReadFloat()

						out$=AddFloatAttrib(out$,"wrot",key_rw)
						out$=AddFloatAttrib(out$,"xrot",key_rx)
						out$=AddFloatAttrib(out$,"yrot",key_ry)
						out$=AddFloatAttrib(out$,"zrot",key_rz)

					EndIf
					
					out$ = CloseAndEndTag(out$)				
					If Not (dumpflags And B3DXML_FLAG_SkipKeys )
						emit out$
					EndIf						
					
				Wend
			Else
				;;;DebugLog tab$+"***** Illegal number of keys *****"
			EndIf
		Case "TEXS"
		  emit "<" + chunk$ + ">"
		
			While b3dChunkSize()
				name$=b3dReadString$()
				flags=b3dReadInt()
				blend=b3dReadInt()
				x_pos#=b3dReadFloat()
				y_pos#=b3dReadFloat()
				x_scl#=b3dReadFloat()
				y_scl#=b3dReadFloat()
				rot#=b3dReadFloat()



				If dumpflags And B3DXML_FLAG_StripTexturePaths Then  name$=StripPath(name$)

				out$=BeginTag$("TEXTURE")
				out$=AddStringAttrib(out$,"name",name$)
				out$=AddIntegerAttrib(out$,"flags",flags)				
				out$=AddIntegerAttrib(out$,"blend",blend)
				out$=AddFloatAttrib(out$,"xpos",x_pos)	; Changed from xoffset to xpos
				out$=AddFloatAttrib(out$,"ypos",y_pos)	; Changed from yoffset to ypos
				out$=AddFloatAttrib(out$,"xscale",x_scl)
				out$=AddFloatAttrib(out$,"yscale",y_scl)
				out$=AddFloatAttrib(out$,"rot",rot)																								
				
				out$ = CloseAndEndTag(out$)				
				emit out$	
				
			Wend
		Case "BRUS"

			n_texs=b3dReadInt()
			
			out$=BeginTag$("BRUS")
			out$=AddIntegerAttrib(out$,"count",n_texs)																						
			out$ = CloseTag(out$)				
			emit out$				
			
			
			;read all brushes in chunk...
			While b3dChunkSize()
				name$=b3dReadString$()
				red#=b3dReadFloat()
				grn#=b3dReadFloat()
				blu#=b3dReadFloat()
				alp#=b3dReadFloat()
				shi#=b3dReadFloat()
				blend=b3dReadInt()
				fx=b3dReadInt()
				
				If dumpflags And B3DXML_FLAG_StripBrushPaths Then  name$=StripPath(name$)
				
				
				out$=BeginTag$("BRUSH")
				out$=AddStringAttrib(out$,"name",name$)
				out$=AddFloatAttrib(out$,"red",red)				
				out$=AddFloatAttrib(out$,"green",grn)
				out$=AddFloatAttrib(out$,"blue",blu)
				out$=AddFloatAttrib(out$,"alpha",alp)
				out$=AddFloatAttrib(out$,"shininess",shi)
				out$=AddIntegerAttrib(out$,"blend",blend)
				out$=AddIntegerAttrib(out$,"fx",fx)																								
				
					
				For k=0 To n_texs-1
					tex_id=b3dReadInt()
					out$ =  AddIntegerAttrib(out$,"texture" + k ,tex_id)
				Next
				
				out$ = CloseAndEndTag(out$)				
				emit out$	
				
			Wend
		Case "VRTS"
			flags=b3dReadInt()
			tc_sets=b3dReadInt()
			tc_size=b3dReadInt()
			sz=12+tc_sets*tc_size*4
			If flags And 1 Then sz=sz+12
			If flags And 2 Then sz=sz+16
			n_verts=b3dChunkSize()/sz
			
			
			out$=BeginTag$("VRTS")
			out$=AddIntegerAttrib(out$,"count",n_verts) 
			out$=AddIntegerAttrib(out$,"flags",flags) 
			out$=AddIntegerAttrib(out$,"texturecoordsets",tc_sets)
			out$=AddIntegerAttrib(out$,"texturecoordsize",tc_size)
			out$ = CloseTag(out$)				
			emit out$			
			
			If n_verts*sz=b3dChunkSize() 
				;read all verts in chunk
				While b3dChunkSize()
									
					x#=b3dReadFloat()
					y#=b3dReadFloat()
					z#=b3dReadFloat()
					
					out$=BeginTag$("VERTEX")
					out$=AddFloatAttrib(out$,"x",x):verts(num_v,1)=x
					out$=AddFloatAttrib(out$,"y",y):verts(num_v,2)=y
					out$=AddFloatAttrib(out$,"z",z):verts(num_v,3)=z
					
					WriteLine deb,num_v+"  "+verts(num_v,1)+"  "+verts(num_v,2)+"  "+verts(num_v,3)+"        "+verts_l(num_v,1)+"  "++verts_l(num_v,2)+"  "++verts_l(num_v,3)
					
					num_v=num_v+1
					
					If flags And 1
						nx#=b3dReadFloat()
						ny#=b3dReadFloat()
						nz#=b3dReadFloat()
						
						out$=AddFloatAttrib(out$,"nx",nx)
						out$=AddFloatAttrib(out$,"ny",ny)
						out$=AddFloatAttrib(out$,"nz",nz)						
												
					EndIf
					If flags And 2
						r#=b3dReadFloat()
						g#=b3dReadFloat()
						b#=b3dReadFloat()
						a#=b3dReadFloat()
						
						out$=AddFloatAttrib(out$,"r",r)
						out$=AddFloatAttrib(out$,"g",g)
						out$=AddFloatAttrib(out$,"b",b)						
						out$=AddFloatAttrib(out$,"a",a)
						
					EndIf


					coordnameindex=0
					set=0
					;read tex coords...
					For j=1 To tc_sets*tc_size
						uvw#=b3dReadFloat()
						
						coordnameindex=coordnameindex + 1
						If coordnameindex>tc_size Then
							coordnameindex =1
							set=set+1
						EndIf

						If coordnameindex=1
							cn$="u"
						ElseIf coordnameindex=2
							cn$="v"
						Else
							cn$="w"
						EndIf
						
						out$=AddFloatAttrib(out$,cn$ + Str$(set),uvw)
						
					Next

					out$ = CloseAndEndTag(out$)	
								
					If Not (dumpflags And B3DXML_FLAG_SkipVertices )
						emit out$
					EndIf
					
				Wend
			Else
				;;;DebugLog tab$+"***** Illegal number of vertices *****"
			EndIf
		Case "TRIS"
		  
			brush_id=b3dReadInt()
			sz=12
			n_tris=b3dChunkSize()/sz
			
			out$=BeginTag$("TRIS")
			out$=AddIntegerAttrib(out$,"count",n_tris) ; trianglecount changed to count
			out$=AddIntegerAttrib(out$,"brush",brush_id)
			out$ = CloseTag(out$)				
			emit out$			
			
			If n_tris*sz=b3dChunkSize()
				;read all tris in chunk
				While b3dChunkSize()
					v0=b3dReadInt()
					v1=b3dReadInt()
					v2=b3dReadInt()

					If Not (dumpflags And B3DXML_FLAG_SkipTriangles )
						out$=BeginTag$("TRI")
						out$=AddIntegerAttrib(out$,"v0",v0)
						out$=AddIntegerAttrib(out$,"v1",v1)
						out$=AddIntegerAttrib(out$,"v2",v2)
						out$ = CloseAndEndTag(out$)				
						emit out$						
					EndIf
					
				Wend
			Else
				;;;DebugLog tab$+"***** Illegal number of triangles *****"
			EndIf
		Case "MESH"
			brush_id=b3dReadInt()
			
			out$=BeginTag$("MESH")
			out$=AddIntegerAttrib(out$,"brush",brush_id)																						
			out$ = CloseTag(out$)				
			emit out$				
			
		Case "BONE"
		  emit "<" + chunk$ + ">"
			sz=8
			n_weights=b3dChunkSize()/sz
			
			
			If n_weights*sz=b3dChunkSize()
				;read all weights
				While b3dChunkSize()
					vertex_id=b3dReadInt()
					
					WriteLine deb,vertex_id+"  "+verts(vertex_id,1)+"  "+verts(vertex_id,2)+"  "+verts(vertex_id,3)+"        "+"  "+verts_l(vertex_id,1)+"  "+verts_l(vertex_id,2)+"  "+verts_l(vertex_id,3)
					
					weight#=b3dReadFloat()
					
					If Not (dumpflags And B3DXML_FLAG_SkipWeights )
						out$=BeginTag$("WEIGHT")
						out$=AddIntegerAttrib(out$,"vertex",vertex_id)
						out$=AddFloatAttrib(out$,"weight",weight)
						out$ = CloseAndEndTag(out$)				
						emit out$						
					EndIf
					
				Wend
			Else
				;;;DebugLog tab$+"***** Illegal number of bone weights *****"
			EndIf
		Case "NODE"
			name$=b3dReadString$()
			
			If name$<>"ROOT" Then 
			WriteLine (deb,name$)			
			EndIf
			
			x_pos#=b3dReadFloat()
			y_pos#=b3dReadFloat()
			z_pos#=b3dReadFloat()
			x_scl#=b3dReadFloat()
			y_scl#=b3dReadFloat()
			z_scl#=b3dReadFloat()
			w_rot#=b3dReadFloat()
			x_rot#=b3dReadFloat()
			y_rot#=b3dReadFloat()
			z_rot#=b3dReadFloat()
	
			If dumpflags And B3DXML_FLAG_StripNodePaths Then  name$=StripPath(name$)	
			
			out$=BeginTag$("NODE")
			out$=AddStringAttrib(out$,"name",name$)
			out$=AddFloatAttrib(out$,"xpos",x_pos)				
			out$=AddFloatAttrib(out$,"ypos",y_pos)
			out$=AddFloatAttrib(out$,"zpos",z_pos)
			out$=AddFloatAttrib(out$,"xscale",x_scl)
			out$=AddFloatAttrib(out$,"yscale",y_scl)
			out$=AddFloatAttrib(out$,"zscale",z_scl)
			out$=AddFloatAttrib(out$,"wrot",w_rot)
			out$=AddFloatAttrib(out$,"xrot",x_rot)
			out$=AddFloatAttrib(out$,"yrot",y_rot)
			out$=AddFloatAttrib(out$,"zrot",z_rot)
		
			out$ = CloseTag(out$)				
			emit out$			
			
		Default
			; OBS untested!

	;		out$=BeginTag$(chunk$)
	;		out$=AddIntegerAttrib(out$,"size",b3dChunkSize())
	;		out$ = CloseTag(out$)				
	;		emit out$
			
	;		out$="<![CDATA[" 
		
	;		While b3dChunkSize()
	;			out$=out$ + Chr$(b3dReadByte())	
	;		Wend
		
	;		out$=out$ + "]]>"
	;		emit out$
		
			
		End Select

		DumpChunks(dumpflags, tab$ )	;dump any subchunks
		b3dExitChunk()					;exit this chunk
	
	
	  If chunk$<>"ANIM" Then emit "</" + chunk$ +  ">" 	
		
	Wend
End Function


Function StripPath$(name$)
	Local pos

	For pos=Len(name$) To 1 Step -1
		If Mid$(name$,pos,1)="\" Or Mid$(name$,pos,1)="/" Then Exit
	Next

	Return Right$(name$,Len(name$)-pos)


End Function

Function emit(out$)
	;DebugLog out$

	If b3dxml_emf Then WriteLine b3dxml_emf,out$
End Function


Function AddFloatAttrib$(tag$,name$,value#)

	If Right$(tag$,1)<>" " Then
		Return tag$ + " " + name$ + "=" + Chr$(34) + value# + Chr$(34)
	Else
		Return tag$ + name$ + "=" + Chr$(34) + value# + Chr$(34)
	EndIf


End Function

Function AddStringAttrib$(tag$,name$,value$)

	If Right$(tag$,1)<>" " Then
		Return tag$ + " " + name$ + "=" + Chr$(34) + value$ + Chr$(34)
	Else
		Return tag$ + name$ + "=" + Chr$(34) + value$ + Chr$(34)
	EndIf


End Function

Function AddIntegerAttrib$(tag$,name$,value%)

	If Right$(tag$,1)<>" " Then
		Return tag$ + " " + name$ + "=" + Chr$(34) + value% + Chr$(34)
	Else
		Return tag$ + name$ + "=" + Chr$(34) + value% + Chr$(34)
	EndIf


End Function



Function BeginTag$(tag$)
	Return "<" + tag$

End Function

Function CloseTag$(tag$)
	Return tag$ + ">"

End Function

Function CloseAndEndTag$(tag$)
	Return tag$ + "/>"

End Function

jfk EO-11110

(Posted 2005) [#2]

This may have something to do with the fact that DX is assigning the Surfaces in random order. I even think the vertex assigning is correct, but you are investigating the wrong surfaces?

You can identify the surfaces by the texturepaths they use, check out the SaveB3D example in the archives.

Beaker

(Posted 2005) [#3]

Please try and use the codebox tags for long code snippets.

GrumpyOldMan

(Posted 2005) [#4]

jfk

I'm using the test on a single surface mesh so there's no problem with getting the surfaces mixed up. If you run the test on any mesh you'll find that the xyz values stored in the .b3d are not what's listed when you examine the surface. It seems to transpose values for two adjacent vertices at irregular intervals. This can be extremely frustrating if you are trying to use mesh transformation/animation or vertex manipulation and the wrong bits are affected.

Here's a sample from a previous vertex_debug.txt I did. It's from the second part that shows the vertices assigned to a bone (first identifier) and the .b3d stored values (first three values) and the surface values (last three values):-

bone_Lupperarm
114 -0.509136 0.566088 -0.037949
-0.509136 0.566088 -0.037949

115 -0.475962 0.512421 0.052254
-0.755178 0.49754 0.029134

122 -0.509131 0.446608 -0.037958
-0.509131 0.446608 -0.037958

123 -0.470354 0.5 -0.086906
-0.767302 0.497315 -0.047245

Beaker

Mea culpa. I stand rightfully admonished and will now always use the codebox tags.

Cheers

GrumpyOldMan

jfk EO-11110

(Posted 2005) [#5]

Ok, I see. Sorry, I have no idea why this happens. Maybe Mr. Sibly knows what's going on. you may also try to build the mesh from scatch with vertex data from your perosnal file format. (tho I am not sure if you can do everything you want when bones are involved).

GrumpyOldMan

(Posted 2005) [#6]

Hi jfk

Thanks for the reply. Since I was going to be using the bones only from b3d's for matrix transformations of meshes, it's no great loss. Only it would have been handy to be able to rely on the b3d loader to load a mesh as recorded instead of coming up with my own mesh format and loader.

Cheers

GrumpyOldMan