Angle between node should use consistent direction

[0HyperCube]

Currently the «Angle Between» node returns a value between 0 and π radians. This should be adjusted to be between -π and +π radians, going in an anticlockwise direction. This can be achieved with DVec2::angle_to function in glam.

Graphite/node-graph/nodes/math/src/lib.rs

Lines 828 to 831 in 5543afd

	fn angle_between(_: impl Ctx, vector_a: DVec2, vector_b: DVec2, radians: bool) -> f64 {
	let dot_product = vector_a.normalize_or_zero().dot(vector_b.normalize_or_zero());
	let angle = dot_product.acos();
	if radians { angle } else { angle.to_degrees() }

Suggested by Paulchen in discord.

[Annonnymmousss]

Hey @0HyperCube should I write test for this function(angle_between) too or it's not required? And what to write in the suggestions of angle_between node as it is changed to -180 to 180.. Thankyou...

[0HyperCube]

The DVec2::angle_to function in glam already has tests. I don't think it is necessary to write another test.

I'm not sure what you mean by the "suggestions of angle_between"? I guess you'd need to update the tooltip to reflect the changed functionality.

[Annonnymmousss]

Sorry for the terminology, by "suggestion" which was not the appropriate term. I meant the information of the node that appears on hovering on the node.