Method byInsetting

src/main/java/field/graphics/FLine.java:1191–1202

returns a new line by insetting this shape. This is equivalent to stroking the shape with a line with a certain thickness and then removing that shape from this shape. Setting `amount` to a negative number 'outset's the shape.

(float amount)

		} else if (amount == 0) return duplicate();
		else {
			FLine nn = FLinesAndJavaShapes.javaShapeToFLine(FLinesAndJavaShapes.outsetShape(this, amount));
			nn.copyAttributesFrom(this);
			return nn;
		}
	}

	@HiddenInAutocomplete
	public void setAuxProperties(Map<Integer, String> propertiesToAuxChannels) {
		auxProperties = new LinkedHashMap<>();
		propertiesToAuxChannels.forEach((k, v) -> {
			Dict.Prop pv = new Dict.Prop(v);
			auxProperties.put(k, n -> n.attributes.get(pv));
		});
	}