From b6fc1ab6a8704b51dda1c05942b20b339407200c Mon Sep 17 00:00:00 2001
From: Amanda Ghassaei <amandaghassaei@gmail.com>
Date: Fri, 23 Oct 2015 18:23:32 -0400
Subject: [PATCH] writing bin stl file
---
dependencies/loaders/binary_stl_writer.js | 60 +++++++++++++++++++++++
js/cells/DMACell.js | 3 +-
js/main.js | 4 +-
js/models/FileSaver.js | 7 +--
4 files changed, 68 insertions(+), 6 deletions(-)
create mode 100755 dependencies/loaders/binary_stl_writer.js
diff --git a/dependencies/loaders/binary_stl_writer.js b/dependencies/loaders/binary_stl_writer.js
new file mode 100755
index 00000000..047cf7ae
--- /dev/null
+++ b/dependencies/loaders/binary_stl_writer.js
@@ -0,0 +1,60 @@
+// Written by Paul Kaplan
+
+
+var geometryToSTLBin = function(geometryArray) {
+
+ var writeVector = function(dataview, bufferIndex, vector, offset, orientation, isLittleEndian) {
+ vector = vector.clone();
+ console.log(orientation);
+ if (orientation) vector.applyQuaternion(orientation);
+ if (offset) vector.add(offset);
+ bufferIndex = writeFloat(dataview, bufferIndex, vector.x, isLittleEndian);
+ bufferIndex = writeFloat(dataview, bufferIndex, vector.y, isLittleEndian);
+ return writeFloat(dataview, bufferIndex, vector.z, isLittleEndian);
+ };
+
+ var writeFloat = function(dataview, bufferIndex, float, isLittleEndian) {
+ dataview.setFloat32(bufferIndex, float, isLittleEndian);
+ return bufferIndex + 4;
+ };
+
+
+ var isLittleEndian = true; // STL files assume little endian, see wikipedia page
+ var floatData = [];
+
+ for (var index = 0;index<geometryArray.length;index++){
+
+ var geometry = geometryArray[index].geo;
+ var orientation = geometryArray[index].orientation;
+ var offset = geometryArray[index].offset;
+ var tris = geometry.faces;
+ var verts = geometry.vertices;
+
+ for(var n = 0; n < tris.length; n++) {
+ floatData.push([tris[n].normal, verts[tris[n].a], verts[tris[n].b], verts[tris[n].c], offset, orientation]);
+ }
+ }
+
+ //write to DataView
+ var bufferSize = 84 + (50 * floatData.length);
+ var buffer = new ArrayBuffer(bufferSize);
+ var dv = new DataView(buffer);
+ var bufferIndex = 0;
+
+ bufferIndex += 80; // Header is empty
+
+ dv.setUint32(bufferIndex, floatData.length, isLittleEndian);
+ bufferIndex += 4;
+
+ for (var i=0;i<floatData.length;i++){
+ bufferIndex = writeVector(dv, bufferIndex, floatData[i][0], null, floatData[i][5], isLittleEndian);
+ for (var j=1;j<4;j++){
+ bufferIndex = writeVector(dv, bufferIndex, floatData[i][j], floatData[i][4], floatData[i][5], isLittleEndian);
+ }
+ bufferIndex += 2; // unused 'attribute byte count' is a Uint16
+ }
+
+
+ return dv;
+};
+
diff --git a/js/cells/DMACell.js b/js/cells/DMACell.js
index 4fd8903e..3d1619ce 100644
--- a/js/cells/DMACell.js
+++ b/js/cells/DMACell.js
@@ -352,8 +352,9 @@ define(['underscore', 'three', 'threeModel', 'lattice', 'appState', 'globals', '
DMACell.prototype.getVisibleGeometry = function(){//for save stl
var meshes = this.getVisibleMeshes();
var geometry = [];
+ var self = this;
_.each(meshes, function(mesh){
- geometry.push(mesh.geometry);
+ geometry.push({geo: mesh.geometry, offset:self.getAbsolutePosition(), orientation:self.getAbsoluteOrientation()});
});
return geometry;
};
diff --git a/js/main.js b/js/main.js
index 8708ab9c..a7ea11ae 100644
--- a/js/main.js
+++ b/js/main.js
@@ -23,7 +23,7 @@ require.config({
three: '../dependencies/three',
orbitControls: '../dependencies/OrbitControls',
stlLoader: '../dependencies/loaders/STLLoader',
- stlExport: '../dependencies/THREE2STL',
+ stlExport: '../dependencies/loaders/binary_stl_writer',
threeModel: 'three/ThreeModel',
threeView: 'three/ThreeView',
fillGeometry: 'three/FillGeometry',
@@ -241,7 +241,7 @@ require.config({
exports: 'THREE'
},
stlExport: {
- exports: 'stlFromGeometry'
+ exports: 'geometryToSTLBin'
},
threeProjector: {
deps: ['three'],
diff --git a/js/models/FileSaver.js b/js/models/FileSaver.js
index 7ba3899c..7fcdb152 100644
--- a/js/models/FileSaver.js
+++ b/js/models/FileSaver.js
@@ -130,14 +130,15 @@ define(['underscore', 'fileSaverLib', 'lattice', 'materials', 'ribbon', 'menuWra
}
function saveSTL(){
- require(['stlExport'], function(stlFromGeometry){
+ require(['stlExport'], function(geometryToSTLBin){
//merge geometry first
var geoArray = [];
lattice.loopCells(function(cell){
if (cell) geoArray = geoArray.concat(cell.getVisibleGeometry());
});
- var stlString = stlFromGeometry(geoArray);
- saveData(stlString, "DMAssembly", "stl");
+ var stlBin = geometryToSTLBin(geoArray);
+ var blob = new Blob([stlBin], {type: 'application/octet-binary'});
+ saveAs(blob, "STL.stl");
});
}
--
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