1 files changed, 23 insertions, 3 deletions

diff --git a/core/math/aabb.cpp b/core/math/aabb.cpp
index 33aa65f15d..83726f46b5 100644
--- a/core/math/aabb.cpp
+++ b/core/math/aabb.cpp
@@ -33,7 +33,7 @@
 #include "core/string/print_string.h"
 #include "core/variant/variant.h"
 
-real_t AABB::get_area() const {
+real_t AABB::get_volume() const {
 	return size.x * size.y * size.z;
 }
 
@@ -46,14 +46,19 @@ bool AABB::operator!=(const AABB &p_rval) const {
 }
 
 void AABB::merge_with(const AABB &p_aabb) {
+#ifdef MATH_CHECKS
+	if (unlikely(size.x < 0 || size.y < 0 || size.z < 0 || p_aabb.size.x < 0 || p_aabb.size.y < 0 || p_aabb.size.z < 0)) {
+		ERR_PRINT("AABB size is negative, this is not supported. Use AABB.abs() to get an AABB with a positive size.");
+	}
+#endif
 	Vector3 beg_1, beg_2;
 	Vector3 end_1, end_2;
 	Vector3 min, max;
 
 	beg_1 = position;
 	beg_2 = p_aabb.position;
-	end_1 = Vector3(size.x, size.y, size.z) + beg_1;
-	end_2 = Vector3(p_aabb.size.x, p_aabb.size.y, p_aabb.size.z) + beg_2;
+	end_1 = size + beg_1;
+	end_2 = p_aabb.size + beg_2;
 
 	min.x = (beg_1.x < beg_2.x) ? beg_1.x : beg_2.x;
 	min.y = (beg_1.y < beg_2.y) ? beg_1.y : beg_2.y;
@@ -72,6 +77,11 @@ bool AABB::is_equal_approx(const AABB &p_aabb) const {
 }
 
 AABB AABB::intersection(const AABB &p_aabb) const {
+#ifdef MATH_CHECKS
+	if (unlikely(size.x < 0 || size.y < 0 || size.z < 0 || p_aabb.size.x < 0 || p_aabb.size.y < 0 || p_aabb.size.z < 0)) {
+		ERR_PRINT("AABB size is negative, this is not supported. Use AABB.abs() to get an AABB with a positive size.");
+	}
+#endif
 	Vector3 src_min = position;
 	Vector3 src_max = position + size;
 	Vector3 dst_min = p_aabb.position;
@@ -104,6 +114,11 @@ AABB AABB::intersection(const AABB &p_aabb) const {
 }
 
 bool AABB::intersects_ray(const Vector3 &p_from, const Vector3 &p_dir, Vector3 *r_clip, Vector3 *r_normal) const {
+#ifdef MATH_CHECKS
+	if (unlikely(size.x < 0 || size.y < 0 || size.z < 0)) {
+		ERR_PRINT("AABB size is negative, this is not supported. Use AABB.abs() to get an AABB with a positive size.");
+	}
+#endif
 	Vector3 c1, c2;
 	Vector3 end = position + size;
 	real_t near = -1e20;
@@ -147,6 +162,11 @@ bool AABB::intersects_ray(const Vector3 &p_from, const Vector3 &p_dir, Vector3 *
 }
 
 bool AABB::intersects_segment(const Vector3 &p_from, const Vector3 &p_to, Vector3 *r_clip, Vector3 *r_normal) const {
+#ifdef MATH_CHECKS
+	if (unlikely(size.x < 0 || size.y < 0 || size.z < 0)) {
+		ERR_PRINT("AABB size is negative, this is not supported. Use AABB.abs() to get an AABB with a positive size.");
+	}
+#endif
 	real_t min = 0, max = 1;
 	int axis = 0;
 	real_t sign = 0;