split easel into multiple files

 [package]
-name = "wasm-game-of-life"
+name = "easel3d"
 version = "0.1.0"
 authors = ["hopp@silpion.de"]
 edition = "2018"
 
-[lib]
-crate-type = ["cdylib", "rlib"]
-
-[features]
-default = ["console_error_panic_hook"]
-
 [dependencies]
-wasm-bindgen = "0.2"
 lazy_static = "1.4.0"
 
-# The `console_error_panic_hook` crate provides better debugging of panics by
-# logging them with `console.error`. This is great for development, but requires
-# all the `std::fmt` and `std::panicking` infrastructure, so isn't great for
-# code size when deploying.
-console_error_panic_hook = { version = "0.1.1", optional = true }
-
-# `wee_alloc` is a tiny allocator for wasm that is only ~1K in code size
-# compared to the default allocator's ~10K. It is slower than the default
-# allocator, however.
-#
-# Unfortunately, `wee_alloc` requires nightly Rust when targeting wasm for now.
-wee_alloc = { version = "0.4.2", optional = true }
-
 [dev-dependencies]
-wasm-bindgen-test = "0.2"
 
 [profile.release]
-# Tell `rustc` to optimize for small code size.
 opt-level = "s"

@@ -63,18 +63,18 @@ where T: Add<Output = T> + Sub<Output = T> + Div<Output = T>
     }
 
     #[inline]
-    pub fn same_x(&self, b :&Self) -> bool {
+    pub fn same_column(&self, b :&Self) -> bool {
         self.x == b.x
     }
 
     #[inline]
-    pub fn same_y(&self, b :&Self) -> bool {
+    pub fn same_line(&self, b :&Self) -> bool {
         self.y == b.y
     }
 
     #[inline]
     pub fn same_position(&self, b :&Self) -> bool {
-        self.same_x(b) && self.same_y(b)
+        self.same_column(b) && self.same_line(b)
     }
 
     fn iter(self, b :Self, only_edges :bool) -> LineIterator<T> {

@@ -57,7 +57,7 @@ where T: Add<Output = T> + Sub<Output = T> + Div<Output = T>
         let mut  min = cs.iter().enumerate().fold(None, fold).unwrap().0;
         let mut next = self.step(min, d);
 
-        while self.vertex(min).same_y(&self.vertex(next)) {
+        while self.vertex(min).same_line(&self.vertex(next)) {
             min  = next;
             next = self.step(min, d);
         }

@@ -40,6 +40,4 @@ pub mod trigonometry;
 pub mod vector;
 pub mod geometry;
 
-mod utils;
-
 use vector::Vector;