void build() {
filename = "my_tile2.svg";
shp = RG.loadShape(path + filename);
shp = RG.centerIn(shp, g, 100);
UVertexList vl, vl2;
vl = new UVertexList();
for (int i = 0; i < 5; i++) vl.add(i, 0);
vl.close();
vl.insert(2, vl.get(1));
println(UMB.str(vl.removeDuplID()));
println(vl.str());
// We decided the separation between the polygon points dependent of the mouseX
float pointSeparation = map(constrain(mouseX, 100, width - 100), 100, width - 100, 4, 20);
// We create the polygonized version
RG.setPolygonizer(RG.UNIFORMLENGTH);
RG.setPolygonizerLength(pointSeparation);
polyshp = RG.polygonize(shp);
poly = polyshp.toPolygon();
ArrayList<UVertexList> cont = UGeomerative.fromRContour(poly.contours);
println("contours " + cont.size());
// for(UVertexList tmp:cont) {
// tmp.removeDupl(true);
//// println("isClockwise "+tmp.isClockwise());
// }
// PGraphicsPDF pdf=(PGraphicsPDF)createGraphics(1000,1000,PDF,path+"test1.pdf");
// UMB.setGraphics(pdf);
// pdf.beginDraw();
// pdf.translate(500,500);
// pdf.stroke(0);
// geo.draw();
// pdf.endDraw();
// pdf.flush();
// pdf.dispose();
geo2 = UPoly2Tri.triangulate(cont);
geo = geo2.copy();
geo.extrudeSelf(50, true);
// geo.removeDuplV().regenerateFaceData();
geo.writeSTL(path + "test1.stl");
}