Add dot product node (#2126)

* dot product node

* dot product node

* cross product node

* formatting n deleted comments

* name changed

* name changed

* cross product removed

* Minor code style changes

---------

Co-authored-by: hypercube <0hypercube@gmail.com>

Author: Gulshan1-3

node-graph/gcore/src/ops.rs

@@ -408,6 +408,11 @@ fn clone<'i, T: Clone + 'i>(_: (), #[implementations(&ImageFrame<Color>)] value:
 	value.clone()
 }
 
+#[node_macro::node(category("Math: Vector"))]
+fn dot_product(vector_a: DVec2, vector_b: DVec2) -> f64 {
+	vector_a.dot(vector_b)
+}
+
 // TODO: Rename to "Passthrough"
 /// Passes-through the input value without changing it. This is useful for rerouting wires for organization purposes.
 #[node_macro::node(skip_impl)]
@@ -471,9 +476,17 @@ mod test {
 		let value = ValueNode(4u32).then(IdentityNode::new());
 		assert_eq!(value.eval(()), &4);
 	}
+
 	#[test]
 	pub fn foo() {
 		let fnn = FnNode::new(|(a, b)| (b, a));
 		assert_eq!(fnn.eval((1u32, 2u32)), (2, 1));
 	}
+
+	#[test]
+	pub fn dot_product_function() {
+		let vector_a = glam::DVec2::new(1., 2.);
+		let vector_b = glam::DVec2::new(3., 4.);
+		assert_eq!(dot_product(vector_a, vector_b), 11.);
+	}
 }