From 3392ab87d2040f9ab76c3095cf5b134369d56831 Mon Sep 17 00:00:00 2001
From: Devine Lu Linvega <aliceffekt@gmail.com>
Date: Sun, 13 Jan 2019 12:12:33 +1200
Subject: [PATCH] Divided clear/draw

---
 README.md                           |  4 ++--
 desktop/sources/scripts/listener.js | 27 ++++++++++++++++-----------
 2 files changed, 18 insertions(+), 13 deletions(-)

diff --git a/README.md b/README.md
index 60a9760..8ed3532 100644
--- a/README.md
+++ b/README.md
@@ -18,10 +18,10 @@ npm start
 
 ## UDP Controls
 
-Dotgrid can be controlled by UDP via the port `49160`. It expects messages of 6 characters.
+Dotgrid can be controlled by UDP via the port `49160`. It expects messages up to 6 characters.
 
 - **layer** `0/1/2`
-- **type** `l/a/r/c`
+- **type** `l/c/r/z` (`l`:line, `c`:clock-wise arc, `r`: cc-wise arc, `z`: close, `.`:clear, `*`: draw)
 - **from** `0-z``0-z`
 - **to** `0-z``0-z`
 
diff --git a/desktop/sources/scripts/listener.js b/desktop/sources/scripts/listener.js
index 6df0893..51a9771 100644
--- a/desktop/sources/scripts/listener.js
+++ b/desktop/sources/scripts/listener.js
@@ -4,7 +4,7 @@
 // Ex: 1a0156(6 characters 0-9a-z)
 
 // 0 layer[0-2]
-// 1 type[larc*]
+// 1 type[lcrd*]
 // 2 from[0-z][0-z]
 // 4 to[0-z][0-z]
 
@@ -17,24 +17,27 @@ function Listener (dotgrid) {
     return clamp(['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y'].indexOf(c.toLowerCase()), 0, 36) * 15 + 15
   }
 
-  function operate (data) {
-    if(!data){ return }
-    if(!dotgrid.tool.layers[data.layer]){ return }
-    dotgrid.tool.index = data.layer
-    dotgrid.tool.addSegment(data.type, [data.from, data.to])
-    dotgrid.renderer.update()
-  }
-
   function clear () {
     dotgrid.tool.erase()
+  }
+
+  function operate (data) {
+    if (!data) { return }
+    if (!dotgrid.tool.layers[data.layer]) { return }
+    dotgrid.tool.index = data.layer
+    dotgrid.tool.addSegment(data.type, [data.from, data.to])
+  }
+
+  function draw () {
     dotgrid.renderer.update()
   }
 
   function parse (msg) {
-    if (msg.length < 6) { return }
+    if (msg.length < 2) { return }
     const layer = parseInt(msg.substr(0, 1))
-    const type = { 'l': 'line', 'a': 'arc_c', 'r': 'arc_r', 'c': 'close' }[msg.substr(1, 1).toLowerCase()]
+    const type = { 'l': 'line', 'c': 'arc_c', 'r': 'arc_r', '*': 'draw' }[msg.substr(1, 1).toLowerCase()]
     if (!type) { clear(); return }
+    if (type === 'draw') { draw(); return }
     const from = { x: base36(msg.substr(2, 1)), y: base36(msg.substr(3, 1)) }
     const to = { x: base36(msg.substr(4, 1)), y: base36(msg.substr(5, 1)) }
     return { layer: layer, type: type, from: from, to: to }
@@ -44,6 +47,8 @@ function Listener (dotgrid) {
     return v < min ? min : v > max ? max : v
   }
 
+  // Server
+
   this.server.on('message', (msg, rinfo) => {
     // console.log(`Server received UDP message:\n ${msg} from ${rinfo.address}:${rinfo.port}`)
     operate(parse(`${msg}`))