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/map/polygon_room.rs | 68 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 src/map/polygon_room.rs

(limited to 'src/map/polygon_room.rs')

diff --git a/src/map/polygon_room.rs b/src/map/polygon_room.rs
new file mode 100644
index 0000000..12c480b
--- /dev/null
+++ b/src/map/polygon_room.rs
@@ -0,0 +1,68 @@
+use super::Mappable;
+use crate::math::{self, Rect, Polygon, Triangle, Vec2};
+use crate::scaleable::Scaleable;
+use crate::transform::Transform;
+use raylib::drawing::{RaylibDraw, RaylibDrawHandle};
+use raylib::ffi::Color;
+
+pub type PolygonRoomData = Polygon<f64>;
+
+pub struct PolygonRoom {
+    data: PolygonRoomData,
+    // The polygon shape, but in triangles, so the polygon does not have to be triangulated every frame.
+    triangulated: Vec<Triangle<f64>>,
+}
+
+impl PolygonRoom {
+    pub fn from_data(data: PolygonRoomData) -> Self {
+        Self {
+            data: data.clone(),
+            triangulated: math::triangulate(data)
+        }
+    }
+
+    fn retriangulate(&mut self) {
+        self.triangulated = math::triangulate(self.data.clone());
+    }
+}
+
+impl Mappable for PolygonRoom {
+    fn draw(&self, rld: &mut RaylibDrawHandle, transform: &Transform) {
+        for triangle in &self.triangulated {
+            rld.draw_triangle(
+                transform.point_m_to_px(&triangle.corners()[0]),
+                transform.point_m_to_px(&triangle.corners()[1]),
+                transform.point_m_to_px(&triangle.corners()[2]),
+                Color {
+                    r: 180,
+                    g: 180,
+                    b: 180,
+                    a: 255,
+                },
+            )
+        }
+    }
+
+    fn bounding_rect(&self) -> Rect<f64> {
+        Rect::bounding_rect_n(&self.data.corners())
+    }
+
+    fn as_scaleable(&self) -> Option<&dyn Scaleable> {
+        Some(self as &dyn Scaleable)
+    }
+}
+
+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");
+        }
+
+        for corner in self.data.corners_mut() {
+            corner.x *= by.x;
+            corner.y *= by.y;
+        }
+
+        self.retriangulate();
+    }
+}
-- 
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