fix: createFromMinAndSize clamps and validates result

On TeraMath classes `Rect2i` and `Rect2f` had the semantics that
creating them from min and size would validate that the size is positive
along both axis.
The JOML utility class was missing this feature.

This also adds overflow prevention.

Author: skaldarnar

nui/src/main/java/org/terasology/nui/util/RectUtility.java

@@ -6,23 +6,30 @@
 import org.joml.Vector2i;
 
 public final class RectUtility {
+
     private RectUtility() {
     }
 
     public static Rectanglei createFromMinAndSize(int minX, int minY, int width, int height) {
-        return new Rectanglei(minX, minY, minX + width, minY + height);
+        final int maxX = NUIMathUtil.addClampAtMax(minX, width);
+        final int maxY = NUIMathUtil.addClampAtMax(minY, height);
+        final Rectanglei rect = new Rectanglei(minX, minY, maxX, maxY);
+        return rect.isValid() ? rect : new Rectanglei();
     }
 
     public static Rectanglei createFromMinAndSize(Vector2i min, Vector2i size) {
-        return new Rectanglei(min, min.add(size, new Vector2i()));
+        return createFromMinAndSize(min.x, min.y, size.x, size.y);
     }
 
     public static Rectanglef createFromMinAndSize(float minX, float minY, float width, float height) {
-        return new Rectanglef(minX, minY, minX + width, minY + height);
+        final float maxX = NUIMathUtil.addClampAtMax(minX, width);
+        final float maxY = NUIMathUtil.addClampAtMax(minY, height);
+        final Rectanglef rect = new Rectanglef(minX, minY, maxX, maxY);
+        return rect.isValid() ? rect : new Rectanglef();
     }
 
     public static Rectanglef createFromMinAndSize(Vector2f min, Vector2f size) {
-        return new Rectanglef(min, min.add(size, new Vector2f()));
+        return createFromMinAndSize(min.x, min.y, size.x, size.y);
     }
 
     public static Rectanglef createFromCenterAndSize(Vector2f center, Vector2f size) {