Doodle3D-Slicer/three.js-master/examples/js/exporters/STLExporter.js
2015-06-12 15:58:26 +02:00

75 lines
1.4 KiB
JavaScript
Executable File

/**
* @author kovacsv / http://kovacsv.hu/
* @author mrdoob / http://mrdoob.com/
*/
THREE.STLExporter = function () {};
THREE.STLExporter.prototype = {
constructor: THREE.STLExporter,
parse: ( function () {
var vector = new THREE.Vector3();
var normalMatrixWorld = new THREE.Matrix3();
return function ( scene ) {
var output = '';
output += 'solid exported\n';
scene.traverse( function ( object ) {
if ( object instanceof THREE.Mesh ) {
var geometry = object.geometry;
var matrixWorld = object.matrixWorld;
if ( geometry instanceof THREE.Geometry ) {
var vertices = geometry.vertices;
var faces = geometry.faces;
normalMatrixWorld.getNormalMatrix( matrixWorld );
for ( var i = 0, l = faces.length; i < l; i ++ ) {
var face = faces[ i ];
vector.copy( face.normal ).applyMatrix3( normalMatrixWorld ).normalize();
output += '\tfacet normal ' + vector.x + ' ' + vector.y + ' ' + vector.z + '\n';
output += '\t\touter loop\n';
var indices = [ face.a, face.b, face.c ];
for ( var j = 0; j < 3; j ++ ) {
vector.copy( vertices[ indices[ j ] ] ).applyMatrix4( matrixWorld );
output += '\t\t\tvertex ' + vector.x + ' ' + vector.y + ' ' + vector.z + '\n';
}
output += '\t\tendloop\n';
output += '\tendfacet\n';
}
}
}
} );
output += 'endsolid exported\n';
return output;
};
}() )
};