webvr js meetup initial commit

node_modules/three/examples/js/loaders/sea3d/o3dgc/SEA3DGC.js

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+/**
+ * 	SEA3D - o3dgc
+ * 	@author Sunag / http://www.sunag.com.br/
+ */
+
+'use strict';
+
+//
+//	Lossy Compression
+//
+
+SEA3D.GeometryGC = function ( name, data, sea3d ) {
+
+	this.name = name;
+	this.data = data;
+	this.sea3d = sea3d;
+
+	var i;
+	var attrib = data.readUShort();
+	var uvIDs = [], jointID, weightID;
+
+	this.isBig = ( attrib & 1 ) != 0;
+
+	data.readVInt = this.isBig ? data.readUInt : data.readUShort;
+
+	// Geometry Flags
+	// ..
+	// 1 isBig
+	// 2 groups
+	// 4 uv
+	// 8 tangent
+	// 16 colors
+	// 32 joints
+	// 64 morph
+	// 128 vertex-animation
+	// ..
+
+	if ( attrib & 2 ) {
+
+		this.groups = [];
+
+		var numGroups = data.readUByte(),
+			groupOffset = 0;
+
+		for ( i = 0; i < numGroups; i ++ )		{
+
+			var groupLength = data.readVInt() * 3;
+
+			this.groups.push( {
+				start: groupOffset,
+				count: groupLength,
+			} );
+
+			groupOffset += groupLength;
+
+		}
+
+	} else {
+
+		this.groups = [];
+
+	}
+
+	if ( attrib & 4 ) {
+
+		this.uv = [];
+
+		var uvCount = data.readUByte();
+
+		for ( i = 0; i < uvCount; i ++ ) {
+
+			uvIDs[ i ] = data.readUByte();
+
+		}
+
+	}
+
+	if ( attrib & 32 ) {
+
+		jointID = data.readUByte();
+		weightID = data.readUByte();
+
+	}
+
+	var size = data.readUInt();
+	var bytes = data.concat( data.position, size );
+
+	var bstream = new o3dgc.BinaryStream( bytes.buffer );
+
+	var decoder = new o3dgc.SC3DMCDecoder();
+	var ifs = new o3dgc.IndexedFaceSet();
+
+	decoder.DecodeHeader( ifs, bstream );
+
+	var numIndexes = ifs.GetNCoordIndex();
+	var numVertex = ifs.GetNCoord();
+
+	if ( ! this.groups.length ) this.groups.push( { start: 0, count: numIndexes * 3 } );
+
+	this.indexes = this.isBig ? new Uint32Array( numIndexes * 3 ) : new Uint16Array( numIndexes * 3 );
+	this.vertex = new Float32Array( numVertex * 3 );
+
+	ifs.SetCoordIndex( this.indexes );
+	ifs.SetCoord( this.vertex );
+
+	if ( ifs.GetNNormal() > 0 ) {
+
+		this.normal = new Float32Array( numVertex * 3 );
+		ifs.SetNormal( this.normal );
+
+	}
+
+	for ( i = 0; i < uvIDs.length; i ++ ) {
+
+		this.uv[ i ] = new Float32Array( numVertex * 2 );
+		ifs.SetFloatAttribute( uvIDs[ i ], this.uv[ i ] );
+
+	}
+
+	if ( jointID !== undefined ) {
+
+		this.jointPerVertex = ifs.GetIntAttributeDim( jointID );
+
+		this.joint = new Uint16Array( numVertex * this.jointPerVertex );
+		this.weight = new Float32Array( numVertex * this.jointPerVertex );
+
+		ifs.SetIntAttribute( jointID, this.joint );
+		ifs.SetFloatAttribute( weightID, this.weight );
+
+	}
+
+	// decode mesh
+
+	decoder.DecodePlayload( ifs, bstream );
+
+};
+
+SEA3D.GeometryGC.prototype.type = "s3D";
+
+//
+//	Extension
+//
+
+THREE.SEA3D.EXTENSIONS_LOADER.push( {
+
+	setTypeRead: function () {
+
+		this.file.addClass( SEA3D.GeometryGC, true );
+
+		this.file.typeRead[ SEA3D.GeometryGC.prototype.type ] = this.readGeometryBuffer;
+
+	}
+
+} );