Method evaluateCubicFrame

src/main/java/field/graphics/FLine.java:77–91

(double ax, double ay, double c1x, double c1y, double c2x, double c2y, double bx, double by, double alpha, Vec2 out)

	public FLine(Map<Object, Object> attributes) {
		for (Map.Entry e : attributes.entrySet()) {
			String name = (String) Conversions.convert(e.getKey(), String.class);
			asMap_set(name, e.getValue());
		}
	}

	@HiddenInAutocomplete
	static public Vec2 evaluateCubicFrame(double ax, double ay, double c1x, double c1y, double c2x, double c2y, double bx, double by, double alpha, Vec2 out) {
		if (out == null) out = new Vec2();

		double oma = 1 - alpha;
		double oma2 = oma * oma;
		double oma3 = oma2 * oma;
		double alpha2 = alpha * alpha;
		double alpha3 = alpha2 * alpha;

		out.x = ax * oma3 + 3 * c1x * alpha * oma2 + 3 * c2x * alpha2 * oma + bx * alpha3;
		out.y = ay * oma3 + 3 * c1y * alpha * oma2 + 3 * c2y * alpha2 * oma + by * alpha3;