From 48f321a80970ebeb8374072b1d2e0a4d297aa348 Mon Sep 17 00:00:00 2001
From: Arne Dußin
Date: Sun, 20 Dec 2020 03:58:46 +0100
Subject: Add dimensional indicator with scaling

---
 src/map/mappable.rs     |  8 ++++++--
 src/map/polygon_room.rs | 26 ++++++++++++++------------
 src/map/rect_room.rs    | 18 +-----------------
 src/map/wall.rs         | 29 ++++++++++++++++++-----------
 4 files changed, 39 insertions(+), 42 deletions(-)

(limited to 'src/map')

diff --git a/src/map/mappable.rs b/src/map/mappable.rs
index b348c4b..323361a 100644
--- a/src/map/mappable.rs
+++ b/src/map/mappable.rs
@@ -2,8 +2,8 @@
 //! dimension on the map and may be scaleable
 
 use crate::math::Rect;
-use crate::scaleable::Scaleable;
 use crate::transform::Transform;
+use crate::transformable::NonRigidTransformable;
 use raylib::drawing::RaylibDrawHandle;
 
 pub trait Mappable {
@@ -21,7 +21,11 @@ pub trait Mappable {
     /// Get the rectangle that contains the mappable object in its entirety without excess.
     fn bounding_rect(&self) -> Rect<f64>;
 
-    fn as_scaleable(&self) -> Option<&dyn Scaleable> {
+    fn as_non_rigid(&self) -> Option<&dyn NonRigidTransformable> {
+        None
+    }
+
+    fn as_non_rigid_mut(&mut self) -> Option<&mut dyn NonRigidTransformable> {
         None
     }
 }
diff --git a/src/map/polygon_room.rs b/src/map/polygon_room.rs
index a209a7c..65eeaab 100644
--- a/src/map/polygon_room.rs
+++ b/src/map/polygon_room.rs
@@ -1,9 +1,10 @@
 use super::Mappable;
 use crate::colours::DEFAULT_COLOURS;
-use crate::math::{self, Polygon, Rect, Triangle, Vec2};
-use crate::scaleable::Scaleable;
+use crate::math::{self, Polygon, Rect, Triangle};
 use crate::transform::Transform;
+use crate::transformable::NonRigidTransformable;
 use raylib::drawing::{RaylibDraw, RaylibDrawHandle};
+use nalgebra::{Matrix3, Point2};
 
 pub type PolygonRoomData = Polygon<f64>;
 
@@ -56,20 +57,21 @@ impl Mappable for PolygonRoom {
         Rect::bounding_rect_n(&self.data.corners())
     }
 
-    fn as_scaleable(&self) -> Option<&dyn Scaleable> {
-        Some(self as &dyn Scaleable)
+    fn as_non_rigid(&self) -> Option<&dyn NonRigidTransformable> {
+        Some(self as &dyn NonRigidTransformable)
     }
-}
 
-impl Scaleable for PolygonRoom {
-    fn scale(&mut self, by: &Vec2<f64>) {
-        if by.x < 0. || by.y < 0. {
-            panic!("Cannot set dimensions with negative size");
-        }
+    fn as_non_rigid_mut(&mut self) -> Option<&mut dyn NonRigidTransformable> {
+        Some(self as &mut dyn NonRigidTransformable)
+    }
+}
 
+impl NonRigidTransformable for PolygonRoom {
+    fn apply_matrix(&mut self, matrix: &Matrix3<f64>) {
         for corner in self.data.corners_mut() {
-            corner.x *= by.x;
-            corner.y *= by.y;
+            *corner = matrix
+                .transform_point(&Point2::new(corner.x, corner.y))
+                .into();
         }
 
         self.retriangulate();
diff --git a/src/map/rect_room.rs b/src/map/rect_room.rs
index 5008c63..ee184fb 100644
--- a/src/map/rect_room.rs
+++ b/src/map/rect_room.rs
@@ -1,7 +1,6 @@
 use crate::colours::DEFAULT_COLOURS;
 use crate::map::Mappable;
-use crate::math::{Rect, Vec2};
-use crate::scaleable::Scaleable;
+use crate::math::Rect;
 use crate::transform::Transform;
 use raylib::drawing::{RaylibDraw, RaylibDrawHandle};
 use serde::Serialize;
@@ -47,21 +46,6 @@ impl Mappable for RectRoom {
     fn bounding_rect(&self) -> Rect<f64> {
         self.data.clone()
     }
-
-    fn as_scaleable(&self) -> Option<&dyn Scaleable> {
-        Some(self as &dyn Scaleable)
-    }
-}
-
-impl Scaleable for RectRoom {
-    fn scale(&mut self, by: &Vec2<f64>) {
-        if by.x < 0. || by.y < 0. {
-            panic!("Cannot set dimensions with negative size");
-        }
-
-        self.data.x *= by.x;
-        self.data.y *= by.y;
-    }
 }
 
 impl Deref for RectRoom {
diff --git a/src/map/wall.rs b/src/map/wall.rs
index 22393bb..d18096b 100644
--- a/src/map/wall.rs
+++ b/src/map/wall.rs
@@ -1,10 +1,11 @@
 use super::Mappable;
 use crate::colours::DEFAULT_COLOURS;
 use crate::math::{LineSegment, Rect, Vec2};
-use crate::scaleable::Scaleable;
 use crate::transform::Transform;
+use crate::transformable::NonRigidTransformable;
 use raylib::drawing::{RaylibDraw, RaylibDrawHandle};
 use std::ops::{Deref, DerefMut};
+use nalgebra::{Matrix3, Point2};
 
 pub type WallData = LineSegment<f64>;
 
@@ -81,18 +82,24 @@ impl Mappable for Wall {
     fn bounding_rect(&self) -> Rect<f64> {
         Rect::bounding_rect(self.data.start, self.data.end)
     }
-}
 
-impl Scaleable for Wall {
-    fn scale(&mut self, by: &Vec2<f64>) {
-        if by.x <= 0. || by.y <= 0. {
-            panic!("Cannot set dimensions with negative size");
-        }
+    fn as_non_rigid(&self) -> Option<&dyn NonRigidTransformable> {
+        Some(self as &dyn NonRigidTransformable)
+    }
+
+    fn as_non_rigid_mut(&mut self) -> Option<&mut dyn NonRigidTransformable> {
+        Some(self as &mut dyn NonRigidTransformable)
+    }
+}
 
-        self.data.start.x *= by.x;
-        self.data.start.y *= by.y;
-        self.data.end.x *= by.x;
-        self.data.end.y *= by.y;
+impl NonRigidTransformable for Wall {
+    fn apply_matrix(&mut self, matrix: &Matrix3<f64>) {
+        self.data.start = matrix
+            .transform_point(&self.data.start.into())
+            .into();
+        self.data.end = matrix
+            .transform_point(&self.data.end.into())
+            .into();
     }
 }
 
-- 
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