Code to clone PGraphics via reflection

clonePGraphics.java

static PGraphics cloneGraphics(PGraphics source) {

		final String renderer;
		switch (source.parent.sketchRenderer()) {
		case "processing.opengl.PGraphics2D":
			renderer = P2D;
			break;
		case "processing.opengl.PGraphics3D":
			renderer = P3D;
			break;
		default: // secondary sketches cannot use FX2D
			renderer = JAVA2D;
		}

		PGraphics clone = source.parent.createGraphics(source.width, source.height, renderer);

		clone.beginDraw();
		clone.style(source.getStyle());

		// A more simple approach would be clone.setStyle(source.style()) it's less
		// thorough than reflecting fields
		final Field[] fields = source.getClass().getFields();
		for (Field field : fields) {
			// non-static field and primitive fields
			if (!java.lang.reflect.Modifier.isStatic(field.getModifiers()) && (field.getType() == int.class
					|| field.getType() == boolean.class || field.getType() == float.class)) { 
				field.setAccessible(true);
				String name = field.getName();
				Object value;
				try {
					value = field.get(source); // get field value from source
					// if (name == "fillColor") {
					field.set(clone, value); // set clone field value using source
					// }
					// System.out.println(name + ": " + value.toString());
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		}

		source.loadPixels(); // graphics buffer -> int[] buffer
		clone.pixels = source.pixels.clone(); // in's int[] buffer -> clone's int[] buffer
		clone.updatePixels(); // int[] buffer -> graphics buffer
		clone.endDraw();

		return clone;
	}