diff --git a/build/geometric.js b/build/geometric.js
index ef2b4f4..cdd4896 100644
--- a/build/geometric.js
+++ b/build/geometric.js
@@ -14,42 +14,109 @@
     return angleToDegrees(Math.atan2(line[1][1] - line[0][1], line[1][0] - line[0][0]));
   }
 
-  // Calculates the distance between the endpoints of a line segment.
-  function lineLength(line) {
-    return Math.sqrt(Math.pow(line[1][0] - line[0][0], 2) + Math.pow(line[1][1] - line[0][1], 2));
+  function _slicedToArray(arr, i) {
+    return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _nonIterableRest();
   }
 
-  // Converts degrees to radians.
-  function angleToRadians(angle) {
-    return angle / 180 * Math.PI;
+  function _toConsumableArray(arr) {
+    return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _nonIterableSpread();
   }
 
-  function pointTranslate(point) {
-    var angle = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
-    var distance = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 0;
-    var r = angleToRadians(angle);
-    return [point[0] + distance * Math.cos(r), point[1] + distance * Math.sin(r)];
+  function _arrayWithoutHoles(arr) {
+    if (Array.isArray(arr)) {
+      for (var i = 0, arr2 = new Array(arr.length); i < arr.length; i++) arr2[i] = arr[i];
+
+      return arr2;
+    }
+  }
+
+  function _arrayWithHoles(arr) {
+    if (Array.isArray(arr)) return arr;
+  }
+
+  function _iterableToArray(iter) {
+    if (Symbol.iterator in Object(iter) || Object.prototype.toString.call(iter) === "[object Arguments]") return Array.from(iter);
+  }
+
+  function _iterableToArrayLimit(arr, i) {
+    var _arr = [];
+    var _n = true;
+    var _d = false;
+    var _e = undefined;
+
+    try {
+      for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) {
+        _arr.push(_s.value);
+
+        if (i && _arr.length === i) break;
+      }
+    } catch (err) {
+      _d = true;
+      _e = err;
+    } finally {
+      try {
+        if (!_n && _i["return"] != null) _i["return"]();
+      } finally {
+        if (_d) throw _e;
+      }
+    }
+
+    return _arr;
   }
 
+  function _nonIterableSpread() {
+    throw new TypeError("Invalid attempt to spread non-iterable instance");
+  }
+
+  function _nonIterableRest() {
+    throw new TypeError("Invalid attempt to destructure non-iterable instance");
+  }
+
+  // Returns an interpolator function given a line [a, b].
   // The returned interpolator function takes a single argument t, where t is a number ranging from 0 to 1;
   // a value of 0 returns a, while a value of 1 returns b.
   // Intermediate values interpolate from start to end along the line segment.
   // By default, the returned interpolator will output points outside of the line segment if t is less than 0 or greater than 1.
   // You can pass an optional boolean indicating whether to the returned point to inside of the line segment,
   // even if t is greater than 1 or less then 0.
-
   function lineInterpolate(line) {
     var clamp = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;
 
-    if (clamp) {
-      return function (t) {
-        return t <= 0 ? line[0] : t >= 1 ? line[1] : pointTranslate(line[0], lineAngle(line), lineLength(line) * t);
-      };
-    } else {
-      return function (t) {
-        return t === 0 ? line[0] : t === 1 ? line[1] : pointTranslate(line[0], lineAngle(line), lineLength(line) * t);
-      };
-    }
+    var _line = _slicedToArray(line, 2),
+        _line$ = _slicedToArray(_line[0], 2),
+        x1 = _line$[0],
+        y1 = _line$[1],
+        _line$2 = _slicedToArray(_line[1], 2),
+        x2 = _line$2[0],
+        y2 = _line$2[1];
+
+    var x = scale([0, 1], [x1, x2]);
+    var y = scale([0, 1], [y1, y2]);
+    return function (t) {
+      var t0 = clamp ? t < 0 ? 0 : t > 1 ? 1 : t : t;
+      return [x(t0), y(t0)];
+    };
+  } // A linear scale
+
+  function scale(_ref, _ref2) {
+    var _ref3 = _slicedToArray(_ref, 2),
+        d0 = _ref3[0],
+        d1 = _ref3[1];
+
+    var _ref4 = _slicedToArray(_ref2, 2),
+        r0 = _ref4[0],
+        r1 = _ref4[1];
+
+    var dx = d1 - d0;
+    var rx = r1 - r0;
+    return function (v) {
+      return rx * ((v - d0) / dx) + r0;
+    };
+  }
+
+  // Calculates the distance between the endpoints of a line segment.
+  function lineLength(line) {
+    return Math.sqrt(Math.pow(line[1][0] - line[0][0], 2) + Math.pow(line[1][1] - line[0][1], 2));
   }
 
   // Calculates the midpoint of a line segment.
@@ -57,6 +124,11 @@
     return [(line[0][0] + line[1][0]) / 2, (line[0][1] + line[1][1]) / 2];
   }
 
+  // Converts degrees to radians.
+  function angleToRadians(angle) {
+    return angle / 180 * Math.PI;
+  }
+
   function pointRotate(point, angle, origin) {
     var r = angleToRadians(angle || 0);
 
@@ -87,6 +159,13 @@
     });
   }
 
+  function pointTranslate(point) {
+    var angle = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
+    var distance = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 0;
+    var r = angleToRadians(angle);
+    return [point[0] + distance * Math.cos(r), point[1] + distance * Math.sin(r)];
+  }
+
   function lineTranslate(line, angle, distance) {
     return line.map(function (point) {
       return pointTranslate(point, angle, distance);
@@ -199,64 +278,6 @@
     return lower.concat(upper);
   }
 
-  function _slicedToArray(arr, i) {
-    return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _nonIterableRest();
-  }
-
-  function _toConsumableArray(arr) {
-    return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _nonIterableSpread();
-  }
-
-  function _arrayWithoutHoles(arr) {
-    if (Array.isArray(arr)) {
-      for (var i = 0, arr2 = new Array(arr.length); i < arr.length; i++) arr2[i] = arr[i];
-
-      return arr2;
-    }
-  }
-
-  function _arrayWithHoles(arr) {
-    if (Array.isArray(arr)) return arr;
-  }
-
-  function _iterableToArray(iter) {
-    if (Symbol.iterator in Object(iter) || Object.prototype.toString.call(iter) === "[object Arguments]") return Array.from(iter);
-  }
-
-  function _iterableToArrayLimit(arr, i) {
-    var _arr = [];
-    var _n = true;
-    var _d = false;
-    var _e = undefined;
-
-    try {
-      for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) {
-        _arr.push(_s.value);
-
-        if (i && _arr.length === i) break;
-      }
-    } catch (err) {
-      _d = true;
-      _e = err;
-    } finally {
-      try {
-        if (!_n && _i["return"] != null) _i["return"]();
-      } finally {
-        if (_d) throw _e;
-      }
-    }
-
-    return _arr;
-  }
-
-  function _nonIterableSpread() {
-    throw new TypeError("Invalid attempt to spread non-iterable instance");
-  }
-
-  function _nonIterableRest() {
-    throw new TypeError("Invalid attempt to destructure non-iterable instance");
-  }
-
   // Closes a polygon if it's not closed already. Does not modify input polygon.
   function close(polygon) {
     return isClosed(polygon) ? polygon : [].concat(_toConsumableArray(polygon), [polygon[0]]);
diff --git a/build/geometric.min.js b/build/geometric.min.js
deleted file mode 100644
index 67b0bf7..0000000
--- a/build/geometric.min.js
+++ /dev/null
@@ -1 +0,0 @@
-!function(n,t){"object"==typeof exports&&"undefined"!=typeof module?t(exports):"function"==typeof define&&define.amd?define(["exports"],t):t(n.geometric={})}(this,function(n){"use strict";function t(n){return 180*n/Math.PI}function r(n){return t(Math.atan2(n[1][1]-n[0][1],n[1][0]-n[0][0]))}function e(n){return Math.sqrt(Math.pow(n[1][0]-n[0][0],2)+Math.pow(n[1][1]-n[0][1],2))}function o(n){return n/180*Math.PI}function i(n){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:0,r=arguments.length>2&&void 0!==arguments[2]?arguments[2]:0,e=o(t);return[n[0]+r*Math.cos(e),n[1]+r*Math.sin(e)]}function a(n){return arguments.length>1&&void 0!==arguments[1]&&arguments[1]?function(t){return t<=0?n[0]:t>=1?n[1]:i(n[0],r(n),e(n)*t)}:function(t){return 0===t?n[0]:1===t?n[1]:i(n[0],r(n),e(n)*t)}}function u(n){return[(n[0][0]+n[1][0])/2,(n[0][1]+n[1][1])/2]}function l(n,t,r){var e=o(t||0);return!r||0===r[0]&&0===r[1]?f(n,e):f(n.map(function(n,t){return n-r[t]}),e).map(function(n,t){return n+r[t]})}function f(n,t){return[n[0]*Math.cos(t)-n[1]*Math.sin(t),n[0]*Math.sin(t)+n[1]*Math.cos(t)]}function c(n,t,r){return n.map(function(e){return l(e,t,r||u(n))})}function h(n,t,r){return n.map(function(n){return i(n,t,r)})}function g(n){for(var t=arguments.length>1&&void 0!==arguments[1]&&arguments[1],r=0,e=0,o=n.length;e<o;e++){var i=n[e],a=n[e===o-1?0:e+1];r+=i[0]*a[1],r-=a[0]*i[1]}return t?r/2:Math.abs(r/2)}function v(n){if(n.length<3)return null;for(var t=1/0,r=-1/0,e=1/0,o=-1/0,i=!1,a=0,u=n.length;a<u;a++){var l=n[a],f=l[0],c=l[1];null!=f&&isFinite(f)&&null!=c&&isFinite(c)&&(i=!0,f<t&&(t=f),f>r&&(r=f),c<e&&(e=c),c>o&&(o=c))}return i?[[t,e],[r,o]]:null}function p(n){for(var t=0,r=0,e=0,o=n.length,i=0;i<o;i++){var a=i===o-1?0:i+1,u=n[i],l=n[a],f=u[0]*l[1]-l[0]*u[1];t+=f,r+=(u[0]+l[0])*f,e+=(u[1]+l[1])*f}var c=3*t;return[r/c,e/c]}function s(n,t,r){return(n[0]-r[0])*(t[1]-r[1])-(n[1]-r[1])*(t[0]-r[0])}function y(n){if(n.length<3)return null;for(var t=n.slice().sort(function(n,t){return n[0]===t[0]?n[1]-t[1]:n[0]-t[0]}),r=[],e=0;e<t.length;e++){for(;r.length>=2&&s(r[r.length-2],r[r.length-1],t[e])<=0;)r.pop();r.push(t[e])}for(var o=[],i=t.length-1;i>=0;i--){for(;o.length>=2&&s(o[o.length-2],o[o.length-1],t[i])<=0;)o.pop();o.push(t[i])}return o.pop(),r.pop(),r.concat(o)}function d(n,t){return b(n)||A(n,t)||P()}function M(n){return m(n)||I(n)||w()}function m(n){if(Array.isArray(n)){for(var t=0,r=new Array(n.length);t<n.length;t++)r[t]=n[t];return r}}function b(n){if(Array.isArray(n))return n}function I(n){if(Symbol.iterator in Object(n)||"[object Arguments]"===Object.prototype.toString.call(n))return Array.from(n)}function A(n,t){var r=[],e=!0,o=!1,i=void 0;try{for(var a,u=n[Symbol.iterator]();!(e=(a=u.next()).done)&&(r.push(a.value),!t||r.length!==t);e=!0);}catch(n){o=!0,i=n}finally{try{e||null==u.return||u.return()}finally{if(o)throw i}}return r}function w(){throw new TypeError("Invalid attempt to spread non-iterable 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n=arguments.length>0&&void 0!==arguments[0]?arguments[0]:3,t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:100,o=arguments.length>2&&void 0!==arguments[2]?arguments[2]:[0,0],i=Math.sqrt(t/Math.PI),a=Array.from({length:n},function(){return 2*i*Math.random()}),u=Array.from({length:n},function(){return 2*i*Math.random()});a.sort(function(n,t){return n-t}),u.sort(function(n,t){return n-t});var l=O(a,a[0],a[a.length-1]),f=O(u,u[0],u[u.length-1]);E(f);var c=[],h=0,v=0,s=(l.map(function(n,t){return[n,f[t]]}).sort(function(n,t){return Math.atan2(t[1],t[0])-Math.atan2(n[1],n[0])}).forEach(function(n){h+=1*n[0],v+=1*n[1],c.push([h,v])}),p(c));return j(x(c,t/g(c)),r([s,o]),e([s,o]))}function O(n,t,r){for(var e=t,o=t,i=[],a=1;a<n.length-1;a++){var u=n[a];Math.random()>.5?(i.push(u-e),e=u):(i.push(o-u),o=u)}return i.push(r-e),i.push(o-r),i}function E(n){for(var t=n.length-1;t>0;t--){var r=Math.floor(Math.random()*(t+1)),e=[n[r],n[t]];n[t]=e[0],n[r]=e[1]}}function F(n){for(var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:1,r=v(n),e=d(r,2),o=d(e[0],2),i=o[0],u=(o[1],d(e[1],2)),l=u[0],f=(u[1],[]),c=0,h=n.length;c<h;c++){var g=d(n[c],2),p=g[0],s=g[1],y=[i+l-p,s];if(0===t)f[c]=[p,s];else if(1===t)f[c]=y;else{var M=a([[p,s],y]);f[c]=M(Math.max(Math.min(t,1),0))}}return f}function W(n){for(var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:1,r=v(n),e=d(r,2),o=d(e[0],2),i=(o[0],o[1]),u=d(e[1],2),l=(u[0],u[1]),f=[],c=0,h=n.length;c<h;c++){var g=d(n[c],2),p=g[0],s=g[1],y=[p,i+l-s];if(0===t)f[c]=[p,s];else if(1===t)f[c]=y;else{var M=a([[p,s],y]);f[c]=M(Math.max(Math.min(t,1),0))}}return f}function X(){for(var n=arguments.length>0&&void 0!==arguments[0]?arguments[0]:3,t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:100,o=arguments.length>2?arguments[2]:void 0,a=[],u=[0,0],l=[0,0],f=0,c=0;c<n;c++)a[c]=u,l[0]+=u[0],l[1]+=u[1],u=i(u,f,Math.sqrt(4*t*Math.tan(Math.PI/n)/n)),f-=360/n;if(o){var h=[[l[0]/n,l[1]/n],o];a=j(a,r(h),e(h))}return 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r>=360?r-360:r<0?r+360:r}n.lineAngle=r,n.lineInterpolate=a,n.lineLength=e,n.lineMidpoint=u,n.lineRotate=c,n.lineTranslate=h,n.pointRotate=l,n.pointTranslate=i,n.polygonArea=g,n.polygonBounds=v,n.polygonCentroid=p,n.polygonHull=y,n.polygonInterpolate=S,n.polygonLength=L,n.polygonMean=T,n.polygonRandom=q,n.polygonReflectX=F,n.polygonReflectY=W,n.polygonRegular=X,n.polygonRotate=Y,n.polygonScale=_,n.polygonScaleArea=x,n.polygonScaleX=B,n.polygonScaleY=C,n.polygonTranslate=j,n.polygonWind=D,n.lineIntersectsLine=N,n.lineIntersectsPolygon=Q,n.pointInPolygon=U,n.pointOnPolygon=V,n.pointLeftofLine=z,n.pointRightofLine=G,n.pointOnLine=J,n.pointWithLine=K,n.polygonInPolygon=Z,n.polygonIntersectsPolygon=$,n.angleReflect=nn,n.angleToDegrees=t,n.angleToRadians=o,Object.defineProperty(n,"__esModule",{value:!0})});
\ No newline at end of file
diff --git a/build/geometric.zip b/build/geometric.zip
deleted file mode 100644
index d15c426..0000000
Binary files a/build/geometric.zip and /dev/null differ
diff --git a/src/lines/lineInterpolate.js b/src/lines/lineInterpolate.js
index 96e8964..17c8472 100644
--- a/src/lines/lineInterpolate.js
+++ b/src/lines/lineInterpolate.js
@@ -1,7 +1,3 @@
-import { lineAngle } from "./lineAngle";
-import { lineLength } from "./lineLength";
-import { pointTranslate } from "../points/pointTranslate";
-
 // Returns an interpolator function given a line [a, b].
 // The returned interpolator function takes a single argument t, where t is a number ranging from 0 to 1;
 // a value of 0 returns a, while a value of 1 returns b.
@@ -10,10 +6,18 @@ import { pointTranslate } from "../points/pointTranslate";
 // You can pass an optional boolean indicating whether to the returned point to inside of the line segment,
 // even if t is greater than 1 or less then 0.
 export function lineInterpolate(line, clamp = false){
-  if (clamp) {
-    return t => t <= 0 ? line[0] : t >= 1 ? line[1] : pointTranslate(line[0], lineAngle(line), lineLength(line) * t);
-  }
-  else {
-    return t => t === 0 ? line[0] : t === 1 ? line[1] : pointTranslate(line[0], lineAngle(line), lineLength(line) * t);  
+  const [[x1, y1], [x2, y2]] = line;
+  const x = scale([0, 1], [x1, x2]);
+  const y = scale([0, 1], [y1, y2]);
+  return t => {
+    const t0 = clamp ? t < 0 ? 0 : t > 1 ? 1 : t : t;
+    return [x(t0), y(t0)];
   }
+}
+
+// A linear scale
+function scale([d0, d1], [r0, r1]){
+  const dx = d1 - d0;
+  const rx = r1 - r0;
+  return v => rx * ((v - d0) / dx) + r0;
 }
\ No newline at end of file
diff --git a/test/lineInterpolate-test.js b/test/lineInterpolate-test.js
index 4d57047..f575009 100644
--- a/test/lineInterpolate-test.js
+++ b/test/lineInterpolate-test.js
@@ -1,28 +1,30 @@
-const tape = require("tape"),
-      geometric = require("../");
+const tape = require("tape");
+const geometric = require("../");
+const round = require("./utils/roundArray");
+      
 
 tape("lineInterpolate(line) returns points along a line", test => {
   const line = [[236, 0], [708, 190]];
   const interpolator = geometric.lineInterpolate(line);
-  test.deepEqual(interpolator(0), line[0]);
-  test.deepEqual(interpolator(1), line[1]);
-  test.deepEqual(interpolator(.1), [283.2, 19]);
-  test.deepEqual(interpolator(.2), [330.4, 38]);
-  test.deepEqual(interpolator(.3), [377.6, 56.99999999999999]);
-  test.deepEqual(interpolator(.4), [424.8, 76]);
-  test.deepEqual(interpolator(.5), [472, 94.99999999999999]);
-  test.deepEqual(interpolator(.6), [519.2, 113.99999999999999]);
-  test.deepEqual(interpolator(.7), [566.4, 132.99999999999997]);
-  test.deepEqual(interpolator(.8), [613.6, 152]);
-  test.deepEqual(interpolator(.9), [660.8, 171]);
+  test.deepEqual(round(interpolator(0), 1), line[0]);
+  test.deepEqual(round(interpolator(1), 1), line[1]);
+  test.deepEqual(round(interpolator(.1), 1), [283.2, 19]);
+  test.deepEqual(round(interpolator(.2), 1), [330.4, 38]);
+  test.deepEqual(round(interpolator(.3), 1), [377.6, 57]);
+  test.deepEqual(round(interpolator(.4), 1), [424.8, 76]);
+  test.deepEqual(round(interpolator(.5), 1), [472, 95]);
+  test.deepEqual(round(interpolator(.6), 1), [519.2, 114]);
+  test.deepEqual(round(interpolator(.7), 1), [566.4, 133]);
+  test.deepEqual(round(interpolator(.8), 1), [613.6, 152]);
+  test.deepEqual(round(interpolator(.9), 1), [660.8, 171]);
   test.end();
 });
 
 tape("lineInterpolate(line) returns points outside the line segment if clamp is false", test => {
   const line = [[236, 0], [708, 190]];
   const interpolator = geometric.lineInterpolate(line);
-  test.deepEqual(interpolator(-0.1), [188.8, -19]);
-  test.deepEqual(interpolator(1.1), [755.2, 209]);
+  test.deepEqual(round(interpolator(-0.1), 1), [188.8, -19]);
+  test.deepEqual(round(interpolator(1.1), 1), [755.2, 209]);
   test.end();
 });
 
diff --git a/test/polygonReflectX-test.js b/test/polygonReflectX-test.js
index b36b728..96a1566 100644
--- a/test/polygonReflectX-test.js
+++ b/test/polygonReflectX-test.js
@@ -8,7 +8,7 @@ tape("polygonReflectX(p) reflects a polygon horizontally", (test) => {
   test.deepEqual(geometric.polygonReflectX(polygon, 1), [[646,200],[606,200],[606,160],[586,103],[578,100],[576,70],[574,100],[566,103],[546,160],[546,200],[476,200],[506,320],[676,320]]);
   test.deepEqual(geometric.polygonReflectX(polygon, 0.5), [[576,200],[576,200],[576,160],[576,103],[576,100],[576,70],[576,100],[576,103],[576,160],[576,200],[576,200],[576,320],[576,320]]);
   test.deepEqual(geometric.polygonReflectX(polygon, 0.25), [[541,200],[561,200],[561,160],[571,103],[575,100],[576,70],[577,100],[581,103],[591,160],[591,200],[626,200],[611,320],[526,320]]);
-  test.deepEqual(geometric.polygonReflectX(polygon, 0.75), [[611,200],[591,200],[591,160],[581,103],[577,100],[576,70],[575,100],[571,103],[561,160],[561,200],[526,200.00000000000003],[541,320],[626,320]]);
+  test.deepEqual(geometric.polygonReflectX(polygon, 0.75), [[611,200],[591,200],[591,160],[581,103],[577,100],[576,70],[575,100],[571,103],[561,160],[561,200],[526,200],[541,320],[626,320]]);
 
   test.deepEqual(geometric.polygonReflectX(polygon, -1), polygon);
   test.deepEqual(geometric.polygonReflectX(polygon, 2), [[646,200],[606,200],[606,160],[586,103],[578,100],[576,70],[574,100],[566,103],[546,160],[546,200],[476,200],[506,320],[676,320]]);
diff --git a/test/utils/roundArray.js b/test/utils/roundArray.js
new file mode 100644
index 0000000..f65b5d1
--- /dev/null
+++ b/test/utils/roundArray.js
@@ -0,0 +1,3 @@
+module.exports = function roundArray(array, precision){
+  return array.map(n => +n.toFixed(precision));
+}
\ No newline at end of file