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415 lines
9.9 KiB
415 lines
9.9 KiB
class LWO2Parser {
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constructor( IFFParser ) {
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this.IFF = IFFParser;
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}
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parseBlock() {
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this.IFF.debugger.offset = this.IFF.reader.offset;
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this.IFF.debugger.closeForms();
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const blockID = this.IFF.reader.getIDTag();
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let length = this.IFF.reader.getUint32(); // size of data in bytes
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if ( length > this.IFF.reader.dv.byteLength - this.IFF.reader.offset ) {
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this.IFF.reader.offset -= 4;
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length = this.IFF.reader.getUint16();
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}
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this.IFF.debugger.dataOffset = this.IFF.reader.offset;
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this.IFF.debugger.length = length;
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// Data types may be found in either LWO2 OR LWO3 spec
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switch ( blockID ) {
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case 'FORM': // form blocks may consist of sub -chunks or sub-forms
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this.IFF.parseForm( length );
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break;
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// SKIPPED CHUNKS
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// if break; is called directly, the position in the lwoTree is not created
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// any sub chunks and forms are added to the parent form instead
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// MISC skipped
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case 'ICON': // Thumbnail Icon Image
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case 'VMPA': // Vertex Map Parameter
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case 'BBOX': // bounding box
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// case 'VMMD':
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// case 'VTYP':
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// normal maps can be specified, normally on models imported from other applications. Currently ignored
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case 'NORM':
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// ENVL FORM skipped
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case 'PRE ':
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case 'POST':
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case 'KEY ':
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case 'SPAN':
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// CLIP FORM skipped
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case 'TIME':
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case 'CLRS':
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case 'CLRA':
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case 'FILT':
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case 'DITH':
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case 'CONT':
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case 'BRIT':
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case 'SATR':
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case 'HUE ':
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case 'GAMM':
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case 'NEGA':
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case 'IFLT':
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case 'PFLT':
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// Image Map Layer skipped
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case 'PROJ':
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case 'AXIS':
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case 'AAST':
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case 'PIXB':
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case 'AUVO':
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case 'STCK':
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// Procedural Textures skipped
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case 'PROC':
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case 'VALU':
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case 'FUNC':
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// Gradient Textures skipped
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case 'PNAM':
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case 'INAM':
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case 'GRST':
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case 'GREN':
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case 'GRPT':
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case 'FKEY':
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case 'IKEY':
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// Texture Mapping Form skipped
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case 'CSYS':
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// Surface CHUNKs skipped
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case 'OPAQ': // top level 'opacity' checkbox
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case 'CMAP': // clip map
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// Surface node CHUNKS skipped
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// These mainly specify the node editor setup in LW
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case 'NLOC':
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case 'NZOM':
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case 'NVER':
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case 'NSRV':
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case 'NVSK': // unknown
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case 'NCRD':
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case 'WRPW': // image wrap w ( for cylindrical and spherical projections)
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case 'WRPH': // image wrap h
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case 'NMOD':
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case 'NSEL':
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case 'NPRW':
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case 'NPLA':
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case 'NODS':
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case 'VERS':
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case 'ENUM':
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case 'TAG ':
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case 'OPAC':
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// Car Material CHUNKS
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case 'CGMD':
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case 'CGTY':
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case 'CGST':
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case 'CGEN':
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case 'CGTS':
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case 'CGTE':
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case 'OSMP':
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case 'OMDE':
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case 'OUTR':
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case 'FLAG':
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case 'TRNL':
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case 'GLOW':
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case 'GVAL': // glow intensity
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case 'SHRP':
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case 'RFOP':
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case 'RSAN':
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case 'TROP':
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case 'RBLR':
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case 'TBLR':
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case 'CLRH':
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case 'CLRF':
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case 'ADTR':
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case 'LINE':
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case 'ALPH':
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case 'VCOL':
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case 'ENAB':
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this.IFF.debugger.skipped = true;
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this.IFF.reader.skip( length );
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break;
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case 'SURF':
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this.IFF.parseSurfaceLwo2( length );
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break;
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case 'CLIP':
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this.IFF.parseClipLwo2( length );
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break;
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// Texture node chunks (not in spec)
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case 'IPIX': // usePixelBlending
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case 'IMIP': // useMipMaps
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case 'IMOD': // imageBlendingMode
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case 'AMOD': // unknown
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case 'IINV': // imageInvertAlpha
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case 'INCR': // imageInvertColor
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case 'IAXS': // imageAxis ( for non-UV maps)
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case 'IFOT': // imageFallofType
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case 'ITIM': // timing for animated textures
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case 'IWRL':
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case 'IUTI':
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case 'IINX':
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case 'IINY':
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case 'IINZ':
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case 'IREF': // possibly a VX for reused texture nodes
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if ( length === 4 ) this.IFF.currentNode[ blockID ] = this.IFF.reader.getInt32();
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else this.IFF.reader.skip( length );
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break;
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case 'OTAG':
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this.IFF.parseObjectTag();
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break;
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case 'LAYR':
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this.IFF.parseLayer( length );
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break;
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case 'PNTS':
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this.IFF.parsePoints( length );
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break;
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case 'VMAP':
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this.IFF.parseVertexMapping( length );
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break;
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case 'AUVU':
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case 'AUVN':
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this.IFF.reader.skip( length - 1 );
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this.IFF.reader.getVariableLengthIndex(); // VX
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break;
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case 'POLS':
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this.IFF.parsePolygonList( length );
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break;
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case 'TAGS':
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this.IFF.parseTagStrings( length );
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break;
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case 'PTAG':
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this.IFF.parsePolygonTagMapping( length );
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break;
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case 'VMAD':
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this.IFF.parseVertexMapping( length, true );
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break;
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// Misc CHUNKS
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case 'DESC': // Description Line
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this.IFF.currentForm.description = this.IFF.reader.getString();
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break;
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case 'TEXT':
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case 'CMNT':
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case 'NCOM':
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this.IFF.currentForm.comment = this.IFF.reader.getString();
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break;
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// Envelope Form
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case 'NAME':
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this.IFF.currentForm.channelName = this.IFF.reader.getString();
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break;
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// Image Map Layer
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case 'WRAP':
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this.IFF.currentForm.wrap = { w: this.IFF.reader.getUint16(), h: this.IFF.reader.getUint16() };
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break;
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case 'IMAG':
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const index = this.IFF.reader.getVariableLengthIndex();
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this.IFF.currentForm.imageIndex = index;
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break;
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// Texture Mapping Form
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case 'OREF':
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this.IFF.currentForm.referenceObject = this.IFF.reader.getString();
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break;
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case 'ROID':
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this.IFF.currentForm.referenceObjectID = this.IFF.reader.getUint32();
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break;
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// Surface Blocks
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case 'SSHN':
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this.IFF.currentSurface.surfaceShaderName = this.IFF.reader.getString();
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break;
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case 'AOVN':
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this.IFF.currentSurface.surfaceCustomAOVName = this.IFF.reader.getString();
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break;
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// Nodal Blocks
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case 'NSTA':
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this.IFF.currentForm.disabled = this.IFF.reader.getUint16();
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break;
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case 'NRNM':
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this.IFF.currentForm.realName = this.IFF.reader.getString();
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break;
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case 'NNME':
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this.IFF.currentForm.refName = this.IFF.reader.getString();
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this.IFF.currentSurface.nodes[ this.IFF.currentForm.refName ] = this.IFF.currentForm;
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break;
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// Nodal Blocks : connections
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case 'INME':
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if ( ! this.IFF.currentForm.nodeName ) this.IFF.currentForm.nodeName = [];
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this.IFF.currentForm.nodeName.push( this.IFF.reader.getString() );
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break;
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case 'IINN':
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if ( ! this.IFF.currentForm.inputNodeName ) this.IFF.currentForm.inputNodeName = [];
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this.IFF.currentForm.inputNodeName.push( this.IFF.reader.getString() );
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break;
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case 'IINM':
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if ( ! this.IFF.currentForm.inputName ) this.IFF.currentForm.inputName = [];
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this.IFF.currentForm.inputName.push( this.IFF.reader.getString() );
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break;
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case 'IONM':
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if ( ! this.IFF.currentForm.inputOutputName ) this.IFF.currentForm.inputOutputName = [];
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this.IFF.currentForm.inputOutputName.push( this.IFF.reader.getString() );
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break;
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case 'FNAM':
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this.IFF.currentForm.fileName = this.IFF.reader.getString();
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break;
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case 'CHAN': // NOTE: ENVL Forms may also have CHAN chunk, however ENVL is currently ignored
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if ( length === 4 ) this.IFF.currentForm.textureChannel = this.IFF.reader.getIDTag();
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else this.IFF.reader.skip( length );
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break;
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// LWO2 Spec chunks: these are needed since the SURF FORMs are often in LWO2 format
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case 'SMAN':
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const maxSmoothingAngle = this.IFF.reader.getFloat32();
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this.IFF.currentSurface.attributes.smooth = ( maxSmoothingAngle < 0 ) ? false : true;
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break;
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// LWO2: Basic Surface Parameters
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case 'COLR':
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this.IFF.currentSurface.attributes.Color = { value: this.IFF.reader.getFloat32Array( 3 ) };
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this.IFF.reader.skip( 2 ); // VX: envelope
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break;
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case 'LUMI':
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this.IFF.currentSurface.attributes.Luminosity = { value: this.IFF.reader.getFloat32() };
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this.IFF.reader.skip( 2 );
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break;
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case 'SPEC':
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this.IFF.currentSurface.attributes.Specular = { value: this.IFF.reader.getFloat32() };
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this.IFF.reader.skip( 2 );
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break;
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case 'DIFF':
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this.IFF.currentSurface.attributes.Diffuse = { value: this.IFF.reader.getFloat32() };
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this.IFF.reader.skip( 2 );
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break;
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case 'REFL':
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this.IFF.currentSurface.attributes.Reflection = { value: this.IFF.reader.getFloat32() };
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this.IFF.reader.skip( 2 );
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break;
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case 'GLOS':
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this.IFF.currentSurface.attributes.Glossiness = { value: this.IFF.reader.getFloat32() };
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this.IFF.reader.skip( 2 );
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break;
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case 'TRAN':
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this.IFF.currentSurface.attributes.opacity = this.IFF.reader.getFloat32();
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this.IFF.reader.skip( 2 );
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break;
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case 'BUMP':
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this.IFF.currentSurface.attributes.bumpStrength = this.IFF.reader.getFloat32();
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this.IFF.reader.skip( 2 );
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break;
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case 'SIDE':
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this.IFF.currentSurface.attributes.side = this.IFF.reader.getUint16();
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break;
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case 'RIMG':
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this.IFF.currentSurface.attributes.reflectionMap = this.IFF.reader.getVariableLengthIndex();
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break;
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case 'RIND':
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this.IFF.currentSurface.attributes.refractiveIndex = this.IFF.reader.getFloat32();
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this.IFF.reader.skip( 2 );
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break;
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case 'TIMG':
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this.IFF.currentSurface.attributes.refractionMap = this.IFF.reader.getVariableLengthIndex();
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break;
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case 'IMAP':
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this.IFF.reader.skip( 2 );
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break;
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case 'TMAP':
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this.IFF.debugger.skipped = true;
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this.IFF.reader.skip( length ); // needs implementing
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break;
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case 'IUVI': // uv channel name
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this.IFF.currentNode.UVChannel = this.IFF.reader.getString( length );
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break;
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case 'IUTL': // widthWrappingMode: 0 = Reset, 1 = Repeat, 2 = Mirror, 3 = Edge
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this.IFF.currentNode.widthWrappingMode = this.IFF.reader.getUint32();
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break;
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case 'IVTL': // heightWrappingMode
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this.IFF.currentNode.heightWrappingMode = this.IFF.reader.getUint32();
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break;
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// LWO2 USE
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case 'BLOK':
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// skip
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break;
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default:
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this.IFF.parseUnknownCHUNK( blockID, length );
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}
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if ( blockID != 'FORM' ) {
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this.IFF.debugger.node = 1;
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this.IFF.debugger.nodeID = blockID;
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this.IFF.debugger.log();
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}
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if ( this.IFF.reader.offset >= this.IFF.currentFormEnd ) {
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this.IFF.currentForm = this.IFF.parentForm;
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}
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}
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}
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export { LWO2Parser };
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