Refactor baking code for Curve2D

The main change is to caculate tangent directly from bezier curve, without going
through discretized polyline, avoiding pitfalls of discretization. A similar refacor
had been applied to Curve3D.

The test cases for Curve2D is updated, comparing floating point with is_equal_approxmiate()
instead of `==`, in order to avoid float precision problem.

1 files changed, 1 insertions, 1 deletions

diff --git a/scene/2d/path_2d.cpp b/scene/2d/path_2d.cpp
index b5945a4562..b68a8fb031 100644
--- a/scene/2d/path_2d.cpp
+++ b/scene/2d/path_2d.cpp
@@ -177,7 +177,7 @@ void PathFollow2D::_update_transform() {
 	}
 
 	if (rotates) {
-		Transform2D xform = c->sample_baked_with_rotation(progress, cubic, loop, lookahead);
+		Transform2D xform = c->sample_baked_with_rotation(progress, cubic);
 		xform.translate_local(v_offset, h_offset);
 		set_rotation(xform[1].angle());
 		set_position(xform[2]);