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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,122 +1,135 @@ | ||
| var canvas = document.getElementById("quadtree_canvas") | ||
| var layer = document.getElementById("layer_canvas") | ||
| var container = document.getElementById("canvas-container") | ||
| var counter = document.getElementById("counter") | ||
| var ctx = canvas.getContext("2d") | ||
| var layerCtx = layer.getContext("2d") | ||
| var width = Math.min(container.clientWidth, window.innerWidth) | ||
| var height = width === window.innerWidth ? window.innerWidth : container.clientHeight | ||
| DELAY = 1 | ||
| canvas.width = width | ||
| canvas.height = height | ||
| layer.width = width | ||
| layer.height = height | ||
| /* global window, document */ | ||
|
|
||
| quadtreeColor = 'rgba(120, 144, 156, 0.1)' | ||
| eltColor = 'rgba(229, 57, 53, 1)' | ||
| oversizeColor = 'rgba(136, 14, 79, 1)' | ||
| collidingColor = '#F57F17' | ||
| window.demo = (function() { | ||
|
|
||
| eltSizeQuota = 25 | ||
| eltDrawMult = 100 | ||
| eltIncrement = 10 | ||
| var canvas = document.getElementById("quadtree_canvas") | ||
| var layer = document.getElementById("layer_canvas") | ||
| var container = document.getElementById("canvas-container") | ||
| var counter = document.getElementById("counter") | ||
| var ctx = canvas.getContext("2d") | ||
| var layerCtx = layer.getContext("2d") | ||
| var width = Math.min(container.clientWidth, window.innerWidth) | ||
| var height = width === window.innerWidth ? window.innerWidth : container.clientHeight | ||
|
|
||
| document.addEventListener('DOMContentLoaded', function () { | ||
| init() | ||
| updateCanvas() | ||
| updateLayer() | ||
| }) | ||
|
|
||
| var init = function(){ | ||
| canvas.width = width | ||
| canvas.height = height | ||
| container.style.height = height+"px" | ||
| ctx.clearRect(0, 0, width, height) | ||
| ctx.lineWidth = 1 | ||
| layer.width = width | ||
| layer.height = height | ||
| layerCtx.clearRect(0, 0, width, height) | ||
| layerCtx.lineWidth = 1 | ||
| quadtree = new Quadtree({ | ||
| width: width, | ||
| height: height | ||
| }) | ||
| updateCounter() | ||
| } | ||
|
|
||
| var updateCounter = function(){ | ||
| counter.innerHTML = quadtree.size + " elements" | ||
| } | ||
| var basicDemo = { | ||
| quadtreeColor: "rgba(120, 144, 156, 0.1)", | ||
| eltColor: "rgba(229, 57, 53, 1)", | ||
| oversizeColor: "rgba(136, 14, 79, 1)", | ||
| collidingColor: "#F57F17", | ||
| eltSizeQuota: 25, | ||
| eltDrawMult: 100, | ||
| eltIncrement: 10, | ||
| mousePos: null, | ||
| quadtree: null, | ||
|
|
||
| var randomizeElement = function(){ | ||
| var squareSize = randomNb(0, Math.min(width, height) / eltSizeQuota) | ||
| return { | ||
| x: randomNb(0, width), | ||
| y: randomNb(0, height), | ||
| width: squareSize, | ||
| height: squareSize, | ||
| color: eltColor//"#"+((1<<24)*Math.random()|0).toString(16) | ||
| } | ||
| } | ||
| init: function() { | ||
| canvas.width = width | ||
| canvas.height = height | ||
| container.style.height = height + "px" | ||
| ctx.clearRect(0, 0, width, height) | ||
| ctx.lineWidth = 1 | ||
| layer.width = width | ||
| layer.height = height | ||
| layerCtx.clearRect(0, 0, width, height) | ||
| layerCtx.lineWidth = 1 | ||
| this.quadtree = new window.Quadtree({ | ||
| width: width, | ||
| height: height | ||
| }) | ||
| this.updateCounter() | ||
| }, | ||
|
|
||
| var updateCanvas = function(){ | ||
| ctx.clearRect(0, 0, width, height) | ||
| quadtree.visit(function(){ | ||
| ctx.strokeStyle = quadtreeColor | ||
| drawQuadtree(this) | ||
| ctx.fillStyle = eltColor | ||
| for(i in this.contents) | ||
| drawSquare(this.contents[i], true) | ||
| ctx.fillStyle = oversizeColor | ||
| for(i in this.oversized) | ||
| drawSquare(this.oversized[i], true) | ||
| }) | ||
| } | ||
| updateCounter: function() { | ||
| counter.innerHTML = this.quadtree.size + " elements" | ||
| }, | ||
|
|
||
| var updateLayer = function(){ | ||
| layerCtx.clearRect(0, 0, width, height) | ||
| if(window.mousePos){ | ||
| layerCtx.strokeStyle = collidingColor | ||
| layerCtx.fillStyle = collidingColor | ||
| layerCtx.beginPath() | ||
| layerCtx.moveTo(0, mousePos.y) | ||
| layerCtx.lineTo(width, mousePos.y) | ||
| layerCtx.closePath() | ||
| layerCtx.stroke() | ||
| layerCtx.beginPath() | ||
| layerCtx.moveTo(mousePos.x, 0) | ||
| layerCtx.lineTo(mousePos.x, height) | ||
| layerCtx.closePath() | ||
| layerCtx.stroke() | ||
| quadtree.colliding(mousePos).forEach(function(elt){ | ||
| drawSquare(elt, true, layerCtx) | ||
| }) | ||
| } | ||
| } | ||
| randomizeElement: function() { | ||
| var squareSize = window.randomNb(0, Math.min(width, height) / this.eltSizeQuota) | ||
| return { | ||
| x: window.randomNb(0, width), | ||
| y: window.randomNb(0, height), | ||
| width: squareSize, | ||
| height: squareSize, | ||
| color: this.eltColor// "#"+((1<<24)*Math.random()|0).toString(16) | ||
| } | ||
| }, | ||
|
|
||
| updateCanvas: function() { | ||
| var that = this | ||
| ctx.clearRect(0, 0, width, height) | ||
| this.quadtree.visit(function() { | ||
| ctx.strokeStyle = that.quadtreeColor | ||
| window.drawQuadtree(this, false, ctx) | ||
| ctx.fillStyle = that.eltColor | ||
| for(var i in this.contents) | ||
| window.drawSquare(this.contents[i], true, ctx) | ||
| ctx.fillStyle = that.oversizeColor | ||
| for(var j in this.oversized) | ||
| window.drawSquare(this.oversized[j], true, ctx) | ||
| }) | ||
| }, | ||
|
|
||
| var addElements = function(){ | ||
| var elementArray = [] | ||
| for(var i = 0; i < eltIncrement; i++) | ||
| elementArray.push(randomizeElement()) | ||
| quadtree.pushAll(elementArray) | ||
| updateCanvas() | ||
| updateLayer() | ||
| updateCounter() | ||
| } | ||
| updateLayer: function() { | ||
| layerCtx.clearRect(0, 0, width, height) | ||
| if(this.mousePos) { | ||
| layerCtx.strokeStyle = this.collidingColor | ||
| layerCtx.fillStyle = this.collidingColor | ||
| layerCtx.beginPath() | ||
| layerCtx.moveTo(0, this.mousePos.y) | ||
| layerCtx.lineTo(width, this.mousePos.y) | ||
| layerCtx.closePath() | ||
| layerCtx.stroke() | ||
| layerCtx.beginPath() | ||
| layerCtx.moveTo(this.mousePos.x, 0) | ||
| layerCtx.lineTo(this.mousePos.x, height) | ||
| layerCtx.closePath() | ||
| layerCtx.stroke() | ||
| this.quadtree.colliding(this.mousePos).forEach(function(elt) { | ||
| window.drawSquare(elt, true, layerCtx) | ||
| }) | ||
| } | ||
| }, | ||
|
|
||
| var unregisterMouse = function(){ | ||
| delete window.mousePos | ||
| updateLayer() | ||
| } | ||
| addElements: function(n) { | ||
| var elementArray = [] | ||
| for(var i = 0; i < (n || this.eltIncrement); i++) | ||
| elementArray.push(this.randomizeElement()) | ||
| this.quadtree.pushAll(elementArray) | ||
| this.updateCanvas() | ||
| this.updateLayer() | ||
| this.updateCounter() | ||
| }, | ||
|
|
||
| var hoverMouse = function(event){ | ||
| mousePos = { | ||
| x: event.offsetX || (event.offsetX === 0 ? 0 : event.changedTouches[0].clientX - event.target.getBoundingClientRect().left), | ||
| y: event.offsetY || (event.offsetY === 0 ? 0 : event.changedTouches[0].clientY - event.target.getBoundingClientRect().top) | ||
| unregisterMouse: function() { | ||
| delete this.mousePos | ||
| this.updateLayer() | ||
| }, | ||
|
|
||
| hoverMouse: function(event) { | ||
| this.mousePos = { | ||
| x: event.offsetX || (event.offsetX === 0 ? 0 : event.changedTouches[0].clientX - event.target.getBoundingClientRect().left), | ||
| y: event.offsetY || (event.offsetY === 0 ? 0 : event.changedTouches[0].clientY - event.target.getBoundingClientRect().top) | ||
| } | ||
| if(this.mousePos.x < 0 || this.mousePos.y < 0) | ||
| return | ||
| event.stopPropagation() | ||
| event.preventDefault() | ||
| this.updateLayer() | ||
| } | ||
| } | ||
| if(mousePos.x < 0 || mousePos.y < 0) | ||
| return | ||
| event.stopPropagation() | ||
| event.preventDefault() | ||
| updateLayer() | ||
| } | ||
|
|
||
| document.addEventListener("DOMContentLoaded", function() { | ||
| basicDemo.init() | ||
| basicDemo.addElements(50) | ||
| basicDemo.updateCanvas() | ||
| basicDemo.updateLayer() | ||
| }) | ||
|
|
||
| return basicDemo | ||
|
|
||
| }()) |
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