add auto svg extrude to 3d object on import

src/moto/load-svg.js

@@ -0,0 +1,52 @@
+'use strict';
+
+(function() {
+
+    if (!self.moto) self.moto = {};
+    if (self.moto.SVG) return;
+
+    self.moto.SVG = {
+        parse,
+        parseAsync
+    };
+
+    /**
+     * @param {String} text
+     * @returns {Array} vertex face array
+     */
+
+    function parseAsync(text) {
+        return new Promise((resolve,reject) => {
+            resolve(parse(text));
+        });
+    }
+
+    function parse(text) {
+
+        let faces = [ ];
+        let objs = [ faces ];
+
+        let data = new THREE.SVGLoader().parse(text);
+        let paths = data.paths;
+
+        for (let i = 0; i < paths.length; i++) {
+            let path = paths[i];
+            let shapes = path.toShapes(true);
+            let geom = new THREE.ExtrudeGeometry(shapes, {
+                steps: 1,
+                depth: 5,
+                bevelEnabled: false
+            });
+            let array = geom.attributes.position.array;
+            // invert y
+            for (let i=0; i<array.length; i+=3) {
+                array[i+1] = -array[i+1];
+            }
+            // objs.push(geom.attributes.position.array);
+            faces.appendAll(array);
+        }
+
+        return objs;
+    }
+
+})();