Yes, did it with a few lines,
beginShape();
vertex (10,24);
vertex (100,23);
vertex (100,180);
//bezierVertex (mouseX,mouseY, 400, 400,mouseX,mouseY,350,200,200);
endShape(0);
but output was the same - just a print-out of coordinates or something, no graphic. Any other ideas for saving 3D custom shapes?