Create parametric helix entities

src/modules/draw/defaults.rs

@@ -28,6 +28,10 @@ thread_local! {
     static RECT_FILLET:     Cell<f64> = Cell::new(0.0);
     static DONUT_INNER_DIAMETER: Cell<f64> = Cell::new(0.5);
     static DONUT_OUTER_DIAMETER: Cell<f64> = Cell::new(1.0);
+    static HELIX_BASE_RADIUS: Cell<f64> = Cell::new(1.0);
+    static HELIX_HEIGHT: Cell<f64> = Cell::new(1.0);
+    static HELIX_TURNS: Cell<f64> = Cell::new(3.0);
+    static HELIX_COUNTER_CLOCKWISE: Cell<bool> = Cell::new(true);
 }
 
 macro_rules! accessors {
@@ -70,6 +74,16 @@ accessors!(get_rect_rotation, set_rect_rotation, RECT_ROTATION);
 accessors!(get_rect_chamfer1, set_rect_chamfer1, RECT_CHAMFER1);
 accessors!(get_rect_chamfer2, set_rect_chamfer2, RECT_CHAMFER2);
 accessors!(get_rect_fillet, set_rect_fillet, RECT_FILLET);
+accessors!(get_helix_base_radius, set_helix_base_radius, HELIX_BASE_RADIUS);
+accessors!(get_helix_height, set_helix_height, HELIX_HEIGHT);
+accessors!(get_helix_turns, set_helix_turns, HELIX_TURNS);
+pub fn get_helix_counter_clockwise() -> bool {
+    HELIX_COUNTER_CLOCKWISE.with(|value| value.get())
+}
+
+pub fn set_helix_counter_clockwise(value: bool) {
+    HELIX_COUNTER_CLOCKWISE.with(|current| current.set(value));
+}
 accessors!(
     get_donut_inner_diameter,
     set_donut_inner_diameter,