From 9799d3c6a8f0c242668203a1c70d7b6cfed3e855 Mon Sep 17 00:00:00 2001
From: Arne Dußin
Date: Tue, 15 Dec 2020 00:46:54 +0100
Subject: Refactor to make interaction between tools easier

---
 src/math/rect.rs | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

(limited to 'src/math/rect.rs')

diff --git a/src/math/rect.rs b/src/math/rect.rs
index 5603642..befa4da 100644
--- a/src/math/rect.rs
+++ b/src/math/rect.rs
@@ -84,6 +84,38 @@ impl<T: Scalar + Copy> Rect<T> {
         }
     }
 
+    /// Function to calculate the bounding rectangle of n vertices provided. The order of them is
+    /// not relevant and a point that is contained by the vertices will not change the result.
+    ///
+    /// # Panics
+    /// If there is not at least one vertex in the vertices slice, the function will panic, since it
+    /// is impossible to calculate any bounds in such a case.
+    pub fn bounding_rect_n(vertices: &[Vec2<T>]) -> Self
+    where
+        T: RealField,
+    {
+        if vertices.is_empty() {
+            panic!("Cannot create bounding rectangle without any vertices");
+        }
+
+        let mut min = vertices[0];
+        let mut max = vertices[1];
+
+        for vertex in vertices.iter().skip(1) {
+            min.x = super::partial_min(min.x, vertex.x);
+            min.y = super::partial_min(min.y, vertex.y);
+            max.x = super::partial_max(max.x, vertex.x);
+            max.y = super::partial_max(max.y, vertex.y);
+        }
+
+        Self {
+            x: min.x,
+            y: min.y,
+            w: max.x - min.x,
+            h: max.y - min.y
+        }
+    }
+
     /// Get the shortest way that must be applied to this Rect to clear out of
     /// another Rect of the same type so that they would not intersect any more.
     pub fn shortest_way_out(&self, of: &Rect<T>) -> Vec2<T>
@@ -145,6 +177,10 @@ impl<T: Scalar + Copy + PartialOrd + ClosedAdd + ClosedSub + Zero> Surface<T> fo
             .iter()
             .all(|&corner| self.contains_point(&corner))
     }
+
+    fn is_inside_rect(&self, rect: &Rect<T>) -> bool {
+        rect.contains_rect(&self)
+    }
 }
 
 // This is sad, but also sadly necessary :/
-- 
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