5 files changed, 24 insertions, 0 deletions
diff --git a/core/math/basis.cpp b/core/math/basis.cpp
index 6b0ecadc7f..9796ac59c2 100644
--- a/core/math/basis.cpp
+++ b/core/math/basis.cpp
@@ -96,6 +96,14 @@ bool Basis::is_orthogonal() const {
 	return m.is_equal_approx(identity);
 }
 
+bool Basis::is_conformal() const {
+	const Vector3 x = get_column(0);
+	const Vector3 y = get_column(1);
+	const Vector3 z = get_column(2);
+	const real_t x_len_sq = x.length_squared();
+	return Math::is_equal_approx(x_len_sq, y.length_squared()) && Math::is_equal_approx(x_len_sq, z.length_squared()) && Math::is_zero_approx(x.dot(y)) && Math::is_zero_approx(x.dot(z)) && Math::is_zero_approx(y.dot(z));
+}
+
 bool Basis::is_diagonal() const {
 	return (
 			Math::is_zero_approx(rows[0][1]) && Math::is_zero_approx(rows[0][2]) &&
diff --git a/core/math/basis.h b/core/math/basis.h
index 1a68bee686..adacd1c216 100644
--- a/core/math/basis.h
+++ b/core/math/basis.h
@@ -138,6 +138,7 @@ struct _NO_DISCARD_ Basis {
 	_FORCE_INLINE_ Basis operator*(const real_t p_val) const;
 
 	bool is_orthogonal() const;
+	bool is_conformal() const;
 	bool is_diagonal() const;
 	bool is_rotation() const;
 
diff --git a/core/math/transform_2d.cpp b/core/math/transform_2d.cpp
index a0187e00b1..bc4682fd90 100644
--- a/core/math/transform_2d.cpp
+++ b/core/math/transform_2d.cpp
@@ -164,6 +164,18 @@ Transform2D Transform2D::orthonormalized() const {
 	return ortho;
 }
 
+bool Transform2D::is_conformal() const {
+	// Non-flipped case.
+	if (Math::is_equal_approx(columns[0][0], columns[1][1]) && Math::is_equal_approx(columns[0][1], -columns[1][0])) {
+		return true;
+	}
+	// Flipped case.
+	if (Math::is_equal_approx(columns[0][0], -columns[1][1]) && Math::is_equal_approx(columns[0][1], columns[1][0])) {
+		return true;
+	}
+	return false;
+}
+
 bool Transform2D::is_equal_approx(const Transform2D &p_transform) const {
 	return columns[0].is_equal_approx(p_transform.columns[0]) && columns[1].is_equal_approx(p_transform.columns[1]) && columns[2].is_equal_approx(p_transform.columns[2]);
 }
diff --git a/core/math/transform_2d.h b/core/math/transform_2d.h
index c511034669..dd1a33c5d5 100644
--- a/core/math/transform_2d.h
+++ b/core/math/transform_2d.h
@@ -96,6 +96,7 @@ struct _NO_DISCARD_ Transform2D {
 
 	void orthonormalize();
 	Transform2D orthonormalized() const;
+	bool is_conformal() const;
 	bool is_equal_approx(const Transform2D &p_transform) const;
 	bool is_finite() const;
 
diff --git a/core/variant/variant_call.cpp b/core/variant/variant_call.cpp
index 772a540d22..b21e23b3ec 100644
--- a/core/variant/variant_call.cpp
+++ b/core/variant/variant_call.cpp
@@ -2076,6 +2076,7 @@ static void _register_variant_builtin_methods() {
 	bind_method(Transform2D, basis_xform, sarray("v"), varray());
 	bind_method(Transform2D, basis_xform_inv, sarray("v"), varray());
 	bind_method(Transform2D, interpolate_with, sarray("xform", "weight"), varray());
+	bind_method(Transform2D, is_conformal, sarray(), varray());
 	bind_method(Transform2D, is_equal_approx, sarray("xform"), varray());
 	bind_method(Transform2D, is_finite, sarray(), varray());
 	// Do not bind functions like set_rotation, set_scale, set_skew, etc because this type is immutable and can't be modified.
@@ -2095,6 +2096,7 @@ static void _register_variant_builtin_methods() {
 	bind_method(Basis, tdoty, sarray("with"), varray());
 	bind_method(Basis, tdotz, sarray("with"), varray());
 	bind_method(Basis, slerp, sarray("to", "weight"), varray());
+	bind_method(Basis, is_conformal, sarray(), varray());
 	bind_method(Basis, is_equal_approx, sarray("b"), varray());
 	bind_method(Basis, is_finite, sarray(), varray());
 	bind_method(Basis, get_rotation_quaternion, sarray(), varray());