diff options
Diffstat (limited to 'mediagoblin/static/js/thingiview.js/thingiloader.js')
| -rw-r--r-- | mediagoblin/static/js/thingiview.js/thingiloader.js | 318 |
1 files changed, 0 insertions, 318 deletions
diff --git a/mediagoblin/static/js/thingiview.js/thingiloader.js b/mediagoblin/static/js/thingiview.js/thingiloader.js deleted file mode 100644 index 3791a49c..00000000 --- a/mediagoblin/static/js/thingiview.js/thingiloader.js +++ /dev/null @@ -1,318 +0,0 @@ -Thingiloader = function(event) { - // Code from https://developer.mozilla.org/En/Using_XMLHttpRequest#Receiving_binary_data - this.load_binary_resource = function(url) { - var req = new XMLHttpRequest(); - req.open('GET', url, false); - // The following line says we want to receive data as Binary and not as Unicode - req.overrideMimeType('text/plain; charset=x-user-defined'); - req.send(null); - if (req.status != 200) return ''; - - return req.responseText; - }; - - this.loadSTL = function(url) { - var looksLikeBinary = function(reader) { - // STL files don't specify a way to distinguish ASCII from binary. - // The usual way is checking for "solid" at the start of the file -- - // but Thingiverse has seen at least one binary STL file in the wild - // that breaks this. - - // The approach here is different: binary STL files contain a triangle - // count early in the file. If this correctly predicts the file's length, - // it is most probably a binary STL file. - - reader.seek(80); // skip the header - var count = reader.readUInt32(); - - var predictedSize = 80 /* header */ + 4 /* count */ + 50 * count; - return reader.getSize() == predictedSize; - }; - - workerFacadeMessage({'status':'message', 'content':'Downloading ' + url}); - var file = this.load_binary_resource(url); - var reader = new BinaryReader(file); - - if (looksLikeBinary(reader)) { - this.loadSTLBinary(reader); - } else { - this.loadSTLString(file); - } - }; - - this.loadOBJ = function(url) { - workerFacadeMessage({'status':'message', 'content':'Downloading ' + url}); - var file = this.load_binary_resource(url); - this.loadOBJString(file); - }; - - this.loadJSON = function(url) { - workerFacadeMessage({'status':'message', 'content':'Downloading ' + url}); - var file = this.load_binary_resource(url); - this.loadJSONString(file); - }; - - this.loadPLY = function(url) { - workerFacadeMessage({'status':'message', 'content':'Downloading ' + url}); - - var file = this.load_binary_resource(url); - - if (file.match(/format ascii/i)) { - this.loadPLYString(file); - } else { - this.loadPLYBinary(file); - } - }; - - this.loadSTLString = function(STLString) { - workerFacadeMessage({'status':'message', 'content':'Parsing STL String...'}); - workerFacadeMessage({'status':'complete', 'content':this.ParseSTLString(STLString)}); - }; - - this.loadSTLBinary = function(STLBinary) { - workerFacadeMessage({'status':'message', 'content':'Parsing STL Binary...'}); - workerFacadeMessage({'status':'complete', 'content':this.ParseSTLBinary(STLBinary)}); - }; - - this.loadOBJString = function(OBJString) { - workerFacadeMessage({'status':'message', 'content':'Parsing OBJ String...'}); - workerFacadeMessage({'status':'complete', 'content':this.ParseOBJString(OBJString)}); - }; - - this.loadJSONString = function(JSONString) { - workerFacadeMessage({'status':'message', 'content':'Parsing JSON String...'}); - workerFacadeMessage({'status':'complete', 'content':eval(JSONString)}); - }; - - this.loadPLYString = function(PLYString) { - workerFacadeMessage({'status':'message', 'content':'Parsing PLY String...'}); - workerFacadeMessage({'status':'complete_points', 'content':this.ParsePLYString(PLYString)}); - }; - - this.loadPLYBinary = function(PLYBinary) { - workerFacadeMessage({'status':'message', 'content':'Parsing PLY Binary...'}); - workerFacadeMessage({'status':'complete_points', 'content':this.ParsePLYBinary(PLYBinary)}); - }; - - this.ParsePLYString = function(input) { - var properties = []; - var vertices = []; - var colors = []; - - var vertex_count = 0; - - var header = /ply\n([\s\S]+)\nend_header/ig.exec(input)[1]; - var data = /end_header\n([\s\S]+)$/ig.exec(input)[1]; - - // workerFacadeMessage({'status':'message', 'content':'header:\n' + header}); - // workerFacadeMessage({'status':'message', 'content':'data:\n' + data}); - - header_parts = header.split("\n"); - - for (i in header_parts) { - if (/element vertex/i.test(header_parts[i])) { - vertex_count = /element vertex (\d+)/i.exec(header_parts[i])[1]; - } else if (/property/i.test(header_parts[i])) { - properties.push(/property (.*) (.*)/i.exec(header_parts[i])[2]); - } - } - - // workerFacadeMessage({'status':'message', 'content':'properties: ' + properties}); - - data_parts = data.split("\n"); - - for (i in data_parts) { - data_line = data_parts[i]; - data_line_parts = data_line.split(" "); - - vertices.push([ - parseFloat(data_line_parts[properties.indexOf("x")]), - parseFloat(data_line_parts[properties.indexOf("y")]), - parseFloat(data_line_parts[properties.indexOf("z")]) - ]); - - colors.push([ - parseInt(data_line_parts[properties.indexOf("red")]), - parseInt(data_line_parts[properties.indexOf("green")]), - parseInt(data_line_parts[properties.indexOf("blue")]) - ]); - } - - // workerFacadeMessage({'status':'message', 'content':'vertices: ' + vertices}); - - return [vertices, colors]; - }; - - this.ParsePLYBinary = function(input) { - return false; - }; - - this.ParseSTLBinary = function(input) { - // Skip the header. - input.seek(80); - - // Load the number of vertices. - var count = input.readUInt32(); - - // During the parse loop we maintain the following data structures: - var vertices = []; // Append-only list of all unique vertices. - var vert_hash = {}; // Mapping from vertex to index in 'vertices', above. - var faces = []; // List of triangle descriptions, each a three-element - // list of indices in 'vertices', above. - - for (var i = 0; i < count; i++) { - if (i % 100 == 0) { - workerFacadeMessage({ - 'status':'message', - 'content':'Parsing ' + (i+1) + ' of ' + count + ' polygons...' - }); - workerFacadeMessage({ - 'status':'progress', - 'content':parseInt(i / count * 100) + '%' - }); - } - - // Skip the normal (3 single-precision floats) - input.seek(input.getPosition() + 12); - - var face_indices = []; - for (var x = 0; x < 3; x++) { - var vertex = [input.readFloat(), input.readFloat(), input.readFloat()]; - - var vertexIndex = vert_hash[vertex]; - if (vertexIndex == null) { - vertexIndex = vertices.length; - vertices.push(vertex); - vert_hash[vertex] = vertexIndex; - } - - face_indices.push(vertexIndex); - } - faces.push(face_indices); - - // Skip the "attribute" field (unused in common models) - input.readUInt16(); - } - - return [vertices, faces]; - }; - - // build stl's vertex and face arrays - this.ParseSTLString = function(STLString) { - var vertexes = []; - var faces = []; - - var face_vertexes = []; - var vert_hash = {} - - // console.log(STLString); - - // strip out extraneous stuff - STLString = STLString.replace(/\r/, "\n"); - STLString = STLString.replace(/^solid[^\n]*/, ""); - STLString = STLString.replace(/\n/g, " "); - STLString = STLString.replace(/facet normal /g,""); - STLString = STLString.replace(/outer loop/g,""); - STLString = STLString.replace(/vertex /g,""); - STLString = STLString.replace(/endloop/g,""); - STLString = STLString.replace(/endfacet/g,""); - STLString = STLString.replace(/endsolid[^\n]*/, ""); - STLString = STLString.replace(/\s+/g, " "); - STLString = STLString.replace(/^\s+/, ""); - - // console.log(STLString); - - var facet_count = 0; - var block_start = 0; - - var points = STLString.split(" "); - - workerFacadeMessage({'status':'message', 'content':'Parsing vertices...'}); - for (var i=0; i<points.length/12-1; i++) { - if ((i % 100) == 0) { - workerFacadeMessage({'status':'progress', 'content':parseInt(i / (points.length/12-1) * 100) + '%'}); - } - - var face_indices = []; - for (var x=0; x<3; x++) { - var vertex = [parseFloat(points[block_start+x*3+3]), parseFloat(points[block_start+x*3+4]), parseFloat(points[block_start+x*3+5])]; - - var vertexIndex = vert_hash[vertex]; - if (vertexIndex == null) { - vertexIndex = vertexes.length; - vertexes.push(vertex); - vert_hash[vertex] = vertexIndex; - } - - face_indices.push(vertexIndex); - } - faces.push(face_indices); - - block_start = block_start + 12; - } - - return [vertexes, faces]; - }; - - this.ParseOBJString = function(OBJString) { - var vertexes = []; - var faces = []; - - var lines = OBJString.split("\n"); - - // var normal_position = 0; - - for (var i=0; i<lines.length; i++) { - workerFacadeMessage({'status':'progress', 'content':parseInt(i / lines.length * 100) + '%'}); - - line_parts = lines[i].replace(/\s+/g, " ").split(" "); - - if (line_parts[0] == "v") { - vertexes.push([parseFloat(line_parts[1]), parseFloat(line_parts[2]), parseFloat(line_parts[3])]); - } else if (line_parts[0] == "f") { - faces.push([parseFloat(line_parts[1].split("/")[0])-1, parseFloat(line_parts[2].split("/")[0])-1, parseFloat(line_parts[3].split("/")[0]-1), 0]) - } - } - - return [vertexes, faces]; - }; - - switch(event.data.cmd) { - case "loadSTL": - this.loadSTL(event.data.param); - break; - case "loadSTLString": - this.loadSTLString(event.data.param); - break; - case "loadSTLBinary": - this.loadSTLBinary(event.data.param); - break; - case "loadOBJ": - this.loadOBJ(event.data.param); - break; - case "loadOBJString": - this.loadOBJString(event.data.param); - break; - case "loadJSON": - this.loadJSON(event.data.param); - break; - case "loadPLY": - this.loadPLY(event.data.param); - break; - case "loadPLYString": - this.loadPLYString(event.data.param); - break; - case "loadPLYBinary": - this.loadPLYBinary(event.data.param); - break; - } - -}; - -if (typeof(window) === "undefined") { - onmessage = Thingiloader; - workerFacadeMessage = postMessage; - importScripts('binaryReader.js'); -} else { - workerFacadeMessage = WorkerFacade.add(thingiurlbase + "/thingiloader.js", Thingiloader); -} |