Update #[min/max] node macro attributes to #[soft/hard]_[min/max] and make them clamp their input data (#2464)

* Fix min and max macro not enforcing limits when data flows

* Use trait based clamping

* Remove min/max from testing

* cargo fmt

* Resolve into min, and hard_min

* cargo fmt

* fix traits

* cargo fmt

* fix tests

* rename as soft_x

* Add validation code

* Clean up (not compiling because of DVec2 clamping)

* Avoid needing to add trait bounds to node definitions

* Code review

---------

Co-authored-by: Dennis Kobert <dennis@kobert.dev>
Co-authored-by: Keavon Chambers <keavon@keavon.com>

node-graph/gcore/src/misc.rs

@@ -0,0 +1,62 @@
+// TODO(TrueDoctor): Replace this with the more idiomatic approach instead of using `trait Clampable`.
+
+/// A trait for types that can be clamped within a min/max range defined by f64.
+pub trait Clampable: Sized {
+	/// Clamps the value to be no less than `min`.
+	fn clamp_hard_min(self, min: f64) -> Self;
+	/// Clamps the value to be no more than `max`.
+	fn clamp_hard_max(self, max: f64) -> Self;
+}
+
+// Implement for common numeric types
+macro_rules! impl_clampable_float {
+	($($ty:ty),*) => {
+		$(
+			impl Clampable for $ty {
+				#[inline(always)]
+				fn clamp_hard_min(self, min: f64) -> Self {
+					self.max(min as $ty)
+				}
+				#[inline(always)]
+				fn clamp_hard_max(self, max: f64) -> Self {
+					self.min(max as $ty)
+				}
+			}
+		)*
+	};
+}
+impl_clampable_float!(f32, f64);
+
+macro_rules! impl_clampable_int {
+	($($ty:ty),*) => {
+		$(
+			impl Clampable for $ty {
+				#[inline(always)]
+				fn clamp_hard_min(self, min: f64) -> Self {
+					// Using try_from to handle potential range issues safely, though min should ideally be valid.
+					// Consider using a different approach if f64 precision vs integer range is a concern.
+					<$ty>::try_from(min.ceil() as i64).ok().map_or(self, |min_val| self.max(min_val))
+				}
+				#[inline(always)]
+				fn clamp_hard_max(self, max: f64) -> Self {
+					<$ty>::try_from(max.floor() as i64).ok().map_or(self, |max_val| self.min(max_val))
+				}
+			}
+		)*
+	};
+}
+// Add relevant integer types (adjust as needed)
+impl_clampable_int!(u32, u64, i32, i64);
+
+// Implement for DVec2 (component-wise clamping)
+use glam::DVec2;
+impl Clampable for DVec2 {
+	#[inline(always)]
+	fn clamp_hard_min(self, min: f64) -> Self {
+		self.max(DVec2::splat(min))
+	}
+	#[inline(always)]
+	fn clamp_hard_max(self, max: f64) -> Self {
+		self.min(DVec2::splat(max))
+	}
+}