Change to polygongraph instead of polygon in roomtool

The polygon room tool used a convoluted process for determining what the
user actually wants to draw. I have changed to the polygon graph
instead, which makes the checks easier and restricts the user a bit
less. In the process however I found a serious problem with my handling
float, so everything needed to change to margin compares (which I of
course should have done in the beginning. Guys, take the warning
seriously and don't ignore it for ten years like I did. It will come
back to haunt you.. apparently) instead of direct equality.

2 files changed, 14 insertions, 8 deletions

diff --git a/src/gui/dimension_indicator.rs b/src/gui/dimension_indicator.rs
index e8848fe..57f5bcc 100644
--- a/src/gui/dimension_indicator.rs
+++ b/src/gui/dimension_indicator.rs
@@ -41,22 +41,28 @@ impl Default for State {
     }
 }
 
+impl Default for DimensionIndicator {
+    fn default() -> Self {
+        Self {
+            state: State::default(),
+            bounds: Rect::new(0., 0., 0., 0.),
+        }
+    }
+}
+
 impl DimensionIndicator {
     /// Create a new dimension indicator. While it is possible to have multiple instances, this is
     /// not generally recommended, since they will need to be managed carefully or otherwise steal
     /// keystrokes from each other.
     pub fn new() -> Self {
-        Self {
-            state: State::default(),
-            bounds: Rect::new(0., 0., 0., 0.),
-        }
+        Self::default()
     }
 
     /// Update whatever is selected on the map according to the dimension indicator rules and rulers.
     pub fn update(&mut self, map: &mut Map, rl: &mut RaylibHandle) {
-        match &self.state {
-            &State::Watching => self.update_watching(map, rl),
-            &State::Ruling { .. } => self.update_ruling(map, rl),
+        match self.state {
+            State::Watching => self.update_watching(map, rl),
+            State::Ruling { .. } => self.update_ruling(map, rl),
         };
     }
 
diff --git a/src/gui/tool_sidebar.rs b/src/gui/tool_sidebar.rs
index e6b8867..b7618e0 100644
--- a/src/gui/tool_sidebar.rs
+++ b/src/gui/tool_sidebar.rs
@@ -3,7 +3,7 @@
 // TODO: Currently, the keyboard shortcuts for tools are handled by the editor, but a lot speaks for
 // them being handled by the ToolSidebar instead.
 
-use crate::math::{Rect, Surface, Vec2};
+use crate::math::{ExactSurface, Rect, Vec2};
 use crate::tool::ToolType;
 use crate::Editor;
 use raylib::core::texture::Texture2D;