From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sun, 27 Sep 2020 03:01:14 +0000 (+0100)
Subject: wip bbox_approx
X-Git-Tag: otter-0.2.0~865
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=587146dad6a057f3b239d30ba45e828c2a8e6dd4;p=otter.git

wip bbox_approx

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---

diff --git a/src/gamestate.rs b/src/gamestate.rs
index 54231352..a16b6e83 100644
--- a/src/gamestate.rs
+++ b/src/gamestate.rs
@@ -85,6 +85,7 @@ pub trait Outline : Send + Debug {
   fn surround_path(&self, pri : &PieceRenderInstructions) -> Result<Html, IE>;
   fn thresh_dragraise(&self, pri : &PieceRenderInstructions)
                       -> Result<Option<Coord>, IE>;
+  fn bbox_approx(&self) -> [Pos;2];
 }
 
 #[typetag::serde]
diff --git a/src/pieces.rs b/src/pieces.rs
index 9a28cb4e..95076f4a 100644
--- a/src/pieces.rs
+++ b/src/pieces.rs
@@ -113,6 +113,7 @@ impl Outline for SimpleShape {
                        -> Result<Html,IE>;
       fn thresh_dragraise(&self, _pri : &PieceRenderInstructions)
                           -> Result<Option<Coord>,IE>;
+      fn bbox_approx(&self) -> [Pos;2];
     }
   }
 }
diff --git a/src/shapelib.rs b/src/shapelib.rs
index 0e0aa88d..eeec5316 100644
--- a/src/shapelib.rs
+++ b/src/shapelib.rs
@@ -139,11 +139,19 @@ struct Item {
   outline: Box<dyn Outline>,
 }
 
+#[derive(Debug,Clone,Serialize,Deserialize)]
+struct ItemEnquiryResult {
+  pub itemname: String,
+  pub bbbox: [Pos; 2],
+  pub f0desc: Html,
+}
+
 #[typetag::serde(name="Lib")]
 impl Outline for Item { delegate! { to self.outline {
   fn surround_path(&self, pri : &PieceRenderInstructions) -> Result<Html, IE>;
   fn thresh_dragraise(&self, pri : &PieceRenderInstructions)
                       -> Result<Option<Coord>, IE>;
+  fn bbox_approx(&self) -> [Pos; 2];
 }}}
 
 #[typetag::serde(name="Lib")]
@@ -407,6 +415,10 @@ impl Outline for Circle {
                       -> Option<Coord> {
     Some((self.diam * 0.5) as Coord)
   }
+  fn bbox_approx(&self) -> [Pos;2] {
+    let d = (self.diam * 0.5).ceil() as Coord;
+    [[-d,-d], [d, d]]
+  }
 }
 
 #[derive(Deserialize,Debug)]
@@ -451,6 +463,15 @@ impl Outline for Square {
       .map(OrderedFloat::from).min().unwrap().into();
     Some((smallest * 0.5) as Coord)
   }
+  fn bbox_approx(&self) -> [Pos;2] {
+    let pos : Pos = self.xy.iter().map(
+      |v| ((v * 0.5).ceil()) as Coord
+    ).collect::<ArrayVec<_>>().into_inner().unwrap();
+    let neg : Pos = pos.iter().map(
+      |v| -v
+    ).collect::<ArrayVec<_>>().into_inner().unwrap();
+    [ neg, pos ]
+  }
 }
 
 #[derive(Deserialize,Debug)]