Modules plus docs

.eslintrc.json

@@ -5,8 +5,9 @@
 		"commonjs": true,
 		"amd": true
 	},
-	"globals": {
-		"global": "writable"
+	"parserOptions": {
+		"sourceType": "module",
+		"ecmaVersion": 2015
 	},
 	"rules": {
 		"semi": ["error", "always"],
@@ -16,7 +17,11 @@
 		{
 			"files": ["utils/**"],
 			"env": {
-				"node": true
+				"node": true,
+				"es6": true
+			},
+			"parserOptions": {
+				"ecmaVersion": 8
 			}
 		},
 		{

.gitignore

@@ -2,4 +2,5 @@ node_modules
 *.DS_Store
 styles/
 junk/
-*.log
+*.log
+docs.json

README.md

@@ -2,7 +2,7 @@
 
 A two-dimensional drawing api meant for modern browsers. It is renderer agnostic enabling the same api to render in multiple contexts: webgl, canvas2d, and svg.
 
-[Home](http://jonobr1.github.io/two.js) • [Examples](http://jonobr1.github.io/two.js/#examples) • [Documentation](http://jonobr1.github.io/two.js/#documentation) • [Help](https://github.com/jonobr1/two.js/issues?labels=question)
+[Home](http://two.js.org) • [Releases](https://github.com/jonobr1/two.js/releases) • [Examples](http://two.js.org/#examples) • [Documentation](http://two.js.org/#documentation) • [Change Log](http://two.js.org/change-log/) • [Help](https://github.com/jonobr1/two.js/issues?labels=question)
 
 ## Usage
 Download the latest [minified library](https://raw.github.com/jonobr1/two.js/dev/build/two.min.js) and include it in your html.
@@ -111,7 +111,10 @@ process.exit();
 
 #### Nightly
 + Removed extraneous underscore calls from `Two.Utils` [@adroitwhiz](https://github.com/adroitwhiz)
-+ Ensure `Two.interpret` respects the `add` parameter to be added (or not) to the current instance 
++ Ensured `Two.interpret` respects the `add` parameter to be added (or not) to the current instance
++ Modularized Two.js classes / files [@adroitwhiz](https://github.com/adroitwhiz)
++ Made Two.js compatible with `import` modules [@adroitwhiz](https://github.com/adroitwhiz)
++ Added wiki as [VuePress](https://vuepress.vuejs.org/) project
 
 #### January, 2020 [v0.7.0](https://github.com/jonobr1/two.js/releases/tag/v0.7.0)
 + Exposed `resolution` parameter in `Two.makeCircle` and `Two.makeEllipse` as the final parameter

build/extras/zui.js

@@ -0,0 +1,265 @@
+/*
+MIT License
+
+Copyright (c) 2012 - 2020 jonobr1 / http://jonobr1.com
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('two.js')) :
+  typeof define === 'function' && define.amd ? define(['two.js'], factory) :
+  (global = global || self, global.ZUI = factory(global.Two));
+}(this, (function (Two) { 'use strict';
+
+  Two = Two && Object.prototype.hasOwnProperty.call(Two, 'default') ? Two['default'] : Two;
+
+  var extend = function(base, obj) {
+    for (var k in obj) {
+      base[k] = obj[k];
+    }
+    return base;
+  };
+
+  var Surface = function(object) {
+    this.object = object;
+  };
+
+  extend(Surface.prototype, {
+
+    limits: function(min, max) {
+
+      var min_exists = typeof min !== 'undefined';
+      var max_exists = typeof max !== 'undefined';
+
+      if (!max_exists && !min_exists) {
+        return { min: this.min, max: this.max };
+      }
+
+      this.min = min_exists ? min : this.min;
+      this.max = max_exists ? max : this.max;
+
+      return this;
+
+    },
+
+    apply: function(px, py, s) {
+      this.object.translation.set(px, py);
+      this.object.scale = s;
+      return this;
+    }
+
+  });
+
+  var ZUI = function(group, domElement) {
+
+    this.limits = {
+      scale: ZUI.Limit.clone(),
+      x: ZUI.Limit.clone(),
+      y: ZUI.Limit.clone()
+    };
+
+    this.viewport = domElement || document.body;
+    this.viewportOffset = {
+      matrix: new Two.Matrix()
+    };
+
+    this.surfaceMatrix = new Two.Matrix();
+
+    this.surfaces = [];
+    this.reset();
+    this.updateSurface();
+
+    this.add(new Surface(group));
+
+  };
+
+  extend(ZUI, {
+
+    Surface: Surface,
+
+    Clamp: function(v, min, max) {
+      return Math.min(Math.max(v, min), max);
+    },
+
+    Limit: {
+      min: -Infinity,
+      max: Infinity,
+      clone: function() {
+        var result = {};
+        for (var k in this) {
+          result[k] = this[k];
+        }
+        return result;
+      }
+    },
+
+    TranslateMatrix: function(m, x, y) {
+      m.elements[2] += x;
+      m.elements[5] += y;
+      return m;
+    },
+
+    PositionToScale: function(pos) {
+      return Math.exp(pos);
+    },
+
+    ScaleToPosition: function(scale) {
+      return Math.log(scale);
+    }
+
+  });
+
+  extend(ZUI.prototype, {
+
+    constructor: ZUI,
+
+    add: function(surface) {
+      this.surfaces.push(surface);
+      var limits = surface.limits();
+      this.addLimits(limits.min, limits.max);
+      return this;
+    },
+
+    addLimits: function(min, max, type) {
+
+      type = type || 'scale';
+
+      if (typeof min !== 'undefined') {
+        if (this.limits[type].min) {
+          this.limits[type].min = Math.max(min, this.limits[type].min);
+        } else {
+          this.limits[type].min = min;
+        }
+      }
+
+      if (typeof max === 'undefined') {
+        return this;
+      }
+
+      if (this.limits[type].max) {
+        this.limits[type].max = Math.min(max, this.limits[type].max);
+      } else {
+        this.limits[type].max = max;
+      }
+
+      return this;
+
+    },
+
+    /**
+     * Conversion Functions
+     */
+
+    clientToSurface: function(x, y) {
+      this.updateOffset();
+      var m = this.surfaceMatrix.inverse();
+      var n = this.viewportOffset.matrix.inverse().multiply(x, y, 1);
+      return m.multiply.apply(m, [n.x, n.y, n.z]);
+    },
+
+    surfaceToClient: function(v) {
+      this.updateOffset();
+      var vo = this.viewportOffset.matrix.clone();
+      var sm = this.surfaceMatrix.multiply.apply(this.surfaceMatrix, [v.x, v.y, v.z]);
+      return vo.multiply.apply(vo, [sm.x, sm.y, sm.z]);
+    },
+
+    /**
+     *
+     */
+
+    zoomBy: function(byF, clientX, clientY) {
+      var s = ZUI.PositionToScale(this.zoom + byF);
+      this.zoomSet(s, clientX, clientY);
+      return this;
+    },
+
+    zoomSet: function(zoom, clientX, clientY) {
+
+      var newScale = this.fitToLimits(zoom);
+      this.zoom = ZUI.ScaleToPosition(newScale);
+
+      if (newScale === this.scale) {
+        return this;
+      }
+
+      var sf = this.clientToSurface(clientX, clientY);
+      var scaleBy = newScale / this.scale;
+
+      this.surfaceMatrix.scale(scaleBy);
+      this.scale = newScale;
+
+      var c = this.surfaceToClient(sf);
+      var dx = clientX - c.x;
+      var dy = clientY - c.y;
+      this.translateSurface(dx, dy);
+
+      return this;
+
+    },
+
+    translateSurface: function(x, y) {
+      ZUI.TranslateMatrix(this.surfaceMatrix, x, y);
+      this.updateSurface();
+      return this;
+    },
+
+    updateOffset: function() {
+
+      var rect = this.viewport.getBoundingClientRect();
+      extend(this.viewportOffset, rect);
+
+      this.viewportOffset.left -= document.body.scrollLeft;
+      this.viewportOffset.top -= document.body.scrollTop;
+
+      this.viewportOffset.matrix
+        .identity()
+        .translate(this.viewportOffset.left, this.viewportOffset.top);
+
+      return this;
+
+    },
+
+    updateSurface: function() {
+
+      var e = this.surfaceMatrix.elements;
+      for (var i = 0; i < this.surfaces.length; i++) {
+        this.surfaces[i].apply(e[2], e[5], e[0]);
+      }
+
+      return this;
+
+    },
+
+    reset: function() {
+      this.zoom = 0;
+      this.scale = 1.0;
+      this.surfaceMatrix.identity();
+      return this;
+    },
+
+    fitToLimits: function(s) {
+      return ZUI.Clamp(s, this.limits.scale.min, this.limits.scale.max);
+    }
+
+  });
+
+  return ZUI;
+
+})));