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saveSTL.js
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/**
* Created by amandaghassaei on 5/2/17.
*/
function makeSaveGEO(doublesided){
var geo = new THREE.Geometry().fromBufferGeometry( globals.model.getGeometry() );
if (geo.vertices.length == 0 || geo.faces.length == 0) {
globals.warn("No geometry to save.");
return;
}
for (var i=0;i<geo.vertices.length;i++){
geo.vertices[i].multiplyScalar(globals.exportScale/globals.scale);
}
// if (globals.thickenModel){
// var numVertices = geo.vertices.length;
// geo.computeVertexNormals();
// geo.computeFaceNormals();
// for (var i=0;i<numVertices;i++){
// var face;
// var vertexNormal = new THREE.Vector3();
// var lastFaceIndex = 0;
// for (var j=0;j<geo.faces.length;j++){
// face = geo.faces[j];
// if (face.a == i) {
// var a = geo.vertices[face.a];
// var b = geo.vertices[face.b];
// var c = geo.vertices[face.c];
// var weight = Math.abs(Math.acos( (b.clone().sub(a)).normalize().dot( (c.clone().sub(a)).normalize() ) ));
// vertexNormal.add(face.normal.clone().multiplyScalar(weight));
// lastFaceIndex = j;
// } else if (face.b == i) {
// var a = geo.vertices[face.a];
// var b = geo.vertices[face.b];
// var c = geo.vertices[face.c];
// var weight = Math.abs(Math.acos( (c.clone().sub(b)).normalize().dot( (a.clone().sub(b)).normalize() ) ));
// vertexNormal.add(face.normal.clone().multiplyScalar(weight));
// lastFaceIndex = j;
// } else if (face.c == i) {
// var a = geo.vertices[face.a];
// var b = geo.vertices[face.b];
// var c = geo.vertices[face.c];
// var weight = Math.abs(Math.acos( (b.clone().sub(c)).normalize().dot( (a.clone().sub(c)).normalize() ) ));
// vertexNormal.add(face.normal.clone().multiplyScalar(weight));
// lastFaceIndex = j;
// }
// // if (vertexNormal !== null) break;
// }
// // if (vertexNormal === undefined) {
// // geo.vertices.push(new THREE.Vector3());
// // continue;
// // }
// //filter out duplicate normals
// vertexNormal.normalize();
// console.log(vertexNormal);
// var offset = vertexNormal.clone().multiplyScalar(5);//globals.thickenOffset/(2*vertexNormal.clone().dot(geo.faces[lastFaceIndex].normal)));
//
// geo.vertices.push(geo.vertices[i].clone().sub(offset));
// geo.vertices[i].add(offset);
// }
// var numFaces = geo.faces.length;
// for (var i=0;i<numFaces;i++){
// var face = geo.faces[i].clone();
// face.a += numVertices;
// face.b += numVertices;
// face.c += numVertices;
// var b = face.b;
// face.b = face.c;
// face.c = b;
// geo.faces.push(face);
// }
// geo.computeVertexNormals();
// geo.computeFaceNormals();
if (doublesided){
var numFaces = geo.faces.length;
for (var i=0;i<numFaces;i++){
var face = geo.faces[i];
geo.faces.push(new THREE.Face3(face.a, face.c, face.b));
}
}
return geo;
}
function saveSTL(){
var data = [];
data.push({geo: makeSaveGEO(globals.doublesidedSTL), offset:new THREE.Vector3(0,0,0), orientation:new THREE.Quaternion(0,0,0,1)});
var stlBin = geometryToSTLBin(data);
if (!stlBin) return;
var blob = new Blob([stlBin], {type: 'application/octet-binary'});
var filename = $("#stlFilename").val();
if (filename == "") filename = globals.filename;
saveAs(blob, filename + ".stl");
}
function saveOBJ(){
//custom export to be compatible with freeform origami
var geo = new THREE.Geometry().fromBufferGeometry( globals.model.getGeometry() );
if (!globals.includeCurves) {
var flatGeo = globals.pattern.getFoldData(false);
} else {
var flatGeo = globals.curvedFolding.getFoldData(false);
}
if (geo.vertices.length == 0 || geo.faces.length == 0) {
globals.warn("No geometry to save.");
return;
}
for (var i=0;i<geo.vertices.length;i++){
geo.vertices[i].multiplyScalar(globals.exportScale/globals.scale);
}
if (!globals.includeCurves) {
var fold = globals.pattern.getFoldData(false);
} else {
var fold = globals.curvedFolding.getFoldData(false);
}
var obj = "#output from https://origamisimulator.org/\n";
obj += "# "+ geo.vertices.length + "vertices\n";
for (var i=0;i<geo.vertices.length;i++){
var vertex = geo.vertices[i];
obj += "v " + vertex.x + " " + vertex.y + " " + vertex.z + "\n"
}
obj += "# uv texture coords\n";
// first get bounds for normalization
var min = [Infinity, Infinity];
var max = [-Infinity, -Infinity];
for (var i=0;i<flatGeo.vertices_coords.length;i++){
var vertex = flatGeo.vertices_coords[i];
if (vertex[0] < min[0]) min[0] = vertex[0];
if (vertex[2] < min[1]) min[1] = vertex[2];
if (vertex[0] > max[0]) max[0] = vertex[0];
if (vertex[2] > max[1]) max[1] = vertex[2];
}
var scale = max[0] - min[0];
if (max[1] - min[1] > scale) scale = max[1] - min[1];
for (var i=0;i<flatGeo.vertices_coords.length;i++){
var vertex = flatGeo.vertices_coords[i];
obj += "vt " + (vertex[0] - min[0]) / scale + " " + (vertex[2] - min[1]) / scale + "\n"
}
obj += "# "+ fold.faces_vertices.length + " faces\n";
for (var i=0;i<fold.faces_vertices.length;i++){
var face = fold.faces_vertices[i];//triangular faces
obj += "f " + (face[0]+1) + "/" + (face[0]+1) + " " + (face[1]+1) + "/" + (face[1]+1)+ " " +
(face[2]+1) + "/" + (face[2]+1) + "\n"
}
obj += "# "+ fold.edges_vertices.length + " edges\n";
for (var i=0;i<fold.edges_vertices.length;i++){
var edge = fold.edges_vertices[i];//triangular faces
obj += "#e " + (edge[0]+1) + " " + (edge[1]+1) + " ";
if (fold.edges_assignment[i] == "F") obj += 1;
else if (fold.edges_assignment[i] == "B") obj += 0;
else if (fold.edges_assignment[i] == "M") obj += 3;
else if (fold.edges_assignment[i] == "V") obj += 2;
else {
console.log("don't know how to convert type " + fold.edges_assignment[i]);
obj += 0;
}
//todo fold angle
obj += " 0\n";
}
// var exporter = new THREE.OBJExporter();
// var result = exporter.parse (new THREE.Mesh(makeSaveGEO(globals.doublesidedOBJ)));
// if (!result) return;
var blob = new Blob([obj], {type: 'application/octet-binary'});
var filename = $("#objFilename").val();
if (filename == "") filename = globals.filename;
saveAs(blob, filename + ".obj");
}