From a615ef199d40d1eec6b5157dae5d4572695ea7ed Mon Sep 17 00:00:00 2001
From: Pitchaya Boonsarngsuk <2285135b@student.gla.ac.uk>
Date: Tue, 16 Jan 2018 20:14:32 +0000
Subject: [PATCH] Interp fix math

---
 src/interpolation.js | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/src/interpolation.js b/src/interpolation.js
index 43df2d0..a4e13a1 100644
--- a/src/interpolation.js
+++ b/src/interpolation.js
@@ -78,8 +78,8 @@ function placeNearToNearestNeighbour(node, minNode, sample, sampleCache, radius)
     }
   }
 
-  var angle = binarySearch(lowBound, highBound, minNode.x, minNode.y, radius, node, sample, sampleCache);
-  var newPoint = centerPoint(angle, radius, minNode.x, minNode.y);
+  let angle = binarySearch(lowBound, highBound, minNode.x, minNode.y, radius, node, sample, realDistances);
+  let newPoint = centerPoint(angle, radius, minNode.x, minNode.y);
 
   // console.log(newPoint);
   node.x = newPoint.x;
@@ -94,10 +94,11 @@ function placeNearToNearestNeighbour(node, minNode, sample, sampleCache, radius)
 
 }
 
-
-function centerPoint(angle, radius, posX, posY) {
-  var x = posX + Math.cos(toRadians(angle) * radius);
-  var y = posY + Math.sin(toRadians(angle) * radius);
+// With a circle radius r, and center at (h,k),
+// Find the coordinate of a point at angle degree
+function pointOnCircle(h, k, angle, r) {
+  let x = h + r*Math.cos(toRadians(angle));
+  let y = k + r*Math.sin(toRadians(angle));
 
   return {
     x: x,