From 6e5dbdeb78b72bf9775ed2ea233db0b2ad8b5e41 Mon Sep 17 00:00:00 2001
From: Jules Laplace <jules@okfoc.us>
Date: Thu, 2 Oct 2014 13:03:24 -0400
Subject: get coordinates for point

---
 .../assets/javascripts/rectangles/models/wall.js   |  8 ++++++
 .../assets/javascripts/rectangles/util/coords.js   | 33 ++++++++++++++++++++++
 2 files changed, 41 insertions(+)
 create mode 100644 public/assets/javascripts/rectangles/util/coords.js

(limited to 'public/assets/javascripts/rectangles')

diff --git a/public/assets/javascripts/rectangles/models/wall.js b/public/assets/javascripts/rectangles/models/wall.js
index 1b37aa0..07c3971 100644
--- a/public/assets/javascripts/rectangles/models/wall.js
+++ b/public/assets/javascripts/rectangles/models/wall.js
@@ -51,6 +51,14 @@
 					})
 				},
 				mousemove: function(e){
+          var offset = offsetFromPoint(e, mx.el)
+          if (offset) {
+            console.log([offset.left * mx.width + mx.face.x.a, (1-offset.top) * mx.height + mx.face.y.a].map(Math.round))
+//             console.log(mx)
+          }
+          else {
+            console.log("NONE")
+          }
 				},
 				mousedown: function(e){
 					if (Scenery.nextMedia) {
diff --git a/public/assets/javascripts/rectangles/util/coords.js b/public/assets/javascripts/rectangles/util/coords.js
new file mode 100644
index 0000000..74b7fda
--- /dev/null
+++ b/public/assets/javascripts/rectangles/util/coords.js
@@ -0,0 +1,33 @@
+function offsetFromPoint(event, element) {
+  function a(width) {
+    var l = 0, r = 200;
+    while (r - l > 0.0001) {
+      var mid = (r + l) / 2;
+      var a = document.createElement('div');
+      a.style.cssText = 'position: absolute;left:0;top:0;background: red;z-index: 1000;';
+      a.style[width ? 'width' : 'height'] = mid.toFixed(3) + '%';
+      a.style[width ? 'height' : 'width'] = '100%';
+      element.appendChild(a);
+      var x = document.elementFromPoint(event.clientX, event.clientY);
+      element.removeChild(a);
+      if (x === a) {
+        r = mid;
+      } else {
+        if (r === 200) {
+          return null;
+        }
+        l = mid;
+      }
+    }
+    return mid;
+  }
+  var l = a(1), 
+      t = a(0);
+  return l && t ? {
+    left: l / 100,
+    top: t / 100,
+    toString: function () {
+      return 'left: ' + l + '%, top: ' + t + '%';
+    }
+  } : null;
+}
-- 
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