Add some missing Vector4 methods

2 files changed, 32 insertions, 5 deletions

diff --git a/core/math/vector4.cpp b/core/math/vector4.cpp
index c2a6f8ead2..ed42d8bfb9 100644
--- a/core/math/vector4.cpp
+++ b/core/math/vector4.cpp
@@ -50,7 +50,7 @@ Vector4 Vector4::normalized() const {
 }
 
 bool Vector4::is_normalized() const {
-	return Math::is_equal_approx(length_squared(), 1, (real_t)UNIT_EPSILON); //use less epsilon
+	return Math::is_equal_approx(length_squared(), 1, (real_t)UNIT_EPSILON); // Use less epsilon.
 }
 
 Vector4 Vector4::abs() const {
@@ -61,6 +61,26 @@ Vector4 Vector4::sign() const {
 	return Vector4(SIGN(x), SIGN(y), SIGN(z), SIGN(w));
 }
 
+Vector4 Vector4::floor() const {
+	return Vector4(Math::floor(x), Math::floor(y), Math::floor(z), Math::floor(w));
+}
+
+Vector4 Vector4::ceil() const {
+	return Vector4(Math::ceil(x), Math::ceil(y), Math::ceil(z), Math::ceil(w));
+}
+
+Vector4 Vector4::round() const {
+	return Vector4(Math::round(x), Math::round(y), Math::round(z), Math::round(w));
+}
+
+Vector4 Vector4::lerp(const Vector4 &p_to, const real_t p_weight) const {
+	return Vector4(
+			x + (p_weight * (p_to.x - x)),
+			y + (p_weight * (p_to.y - y)),
+			z + (p_weight * (p_to.z - z)),
+			w + (p_weight * (p_to.w - w)));
+}
+
 Vector4 Vector4::inverse() const {
 	return Vector4(1.0f / x, 1.0f / y, 1.0f / z, 1.0f / w);
 }
diff --git a/core/math/vector4.h b/core/math/vector4.h
index 645c51db87..37ddb509d6 100644
--- a/core/math/vector4.h
+++ b/core/math/vector4.h
@@ -54,11 +54,13 @@ struct _NO_DISCARD_ Vector4 {
 		real_t components[4] = { 0, 0, 0, 0 };
 	};
 
-	_FORCE_INLINE_ real_t &operator[](int idx) {
-		return components[idx];
+	_FORCE_INLINE_ real_t &operator[](const int p_axis) {
+		DEV_ASSERT((unsigned int)p_axis < 4);
+		return components[p_axis];
 	}
-	_FORCE_INLINE_ const real_t &operator[](int idx) const {
-		return components[idx];
+	_FORCE_INLINE_ const real_t &operator[](const int p_axis) const {
+		DEV_ASSERT((unsigned int)p_axis < 4);
+		return components[p_axis];
 	}
 	_FORCE_INLINE_ real_t length_squared() const;
 	bool is_equal_approx(const Vector4 &p_vec4) const;
@@ -66,8 +68,13 @@ struct _NO_DISCARD_ Vector4 {
 	void normalize();
 	Vector4 normalized() const;
 	bool is_normalized() const;
+
 	Vector4 abs() const;
 	Vector4 sign() const;
+	Vector4 floor() const;
+	Vector4 ceil() const;
+	Vector4 round() const;
+	Vector4 lerp(const Vector4 &p_to, const real_t p_weight) const;
 
 	Vector4::Axis min_axis_index() const;
 	Vector4::Axis max_axis_index() const;