237 lines
10 KiB
JavaScript
237 lines
10 KiB
JavaScript
/* eslint-disable max-len, no-console */
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import 'pathseg'
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import { NS } from '../../../packages/svgcanvas/core/namespaces.js'
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import * as utilities from '../../../packages/svgcanvas/core/utilities.js'
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import * as math from '../../../packages/svgcanvas/core/math.js'
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describe('utilities performance', function () {
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let currentLayer; let groupWithMatrixTransform; let textWithMatrixTransform
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beforeEach(() => {
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document.body.textContent = ''
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const style = document.createElement('style')
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style.id = 'styleoverrides'
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style.media = 'screen'
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style.textContent = `
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#svgcanvas svg * {
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cursor: move;
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pointer-events: all
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}
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#svgcanvas svg {
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cursor: default
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}`
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document.head.append(style)
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const editor = new DOMParser().parseFromString(`<div id="svg_editor">
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<div id="workarea" style="cursor: auto; overflow: scroll; line-height: 12px; right: 100px;">
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<!-- Must include this thumbnail view to see some of the performance issues -->
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<svg id="overviewMiniView" width="132" height="112.5" x="0" y="0" viewBox="100 100 1000 1000" style="float: right;"
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xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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<use x="0" y="0" xlink:href="#svgroot"></use>
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</svg>
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<div id="svgcanvas" style="position: relative; width: 1000px; height: 1000px;">
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<svg id="svgroot" xmlns="http://www.w3.org/2000/svg" xlinkns="http://www.w3.org/1999/xlink" width="1000" height="1000" x="640" y="480" overflow="visible">
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<defs><filter id="canvashadow" filterUnits="objectBoundingBox"><feGaussianBlur in="SourceAlpha" stdDeviation="4" result="blur"></feGaussianBlur><feOffset in="blur" dx="5" dy="5" result="offsetBlur"></feOffset><feMerge><feMergeNode in="offsetBlur"></feMergeNode><feMergeNode in="SourceGraphic"></feMergeNode></feMerge></filter><pattern id="gridpattern" patternUnits="userSpaceOnUse" x="0" y="0" width="100" height="100"><image x="0" y="0" width="100" height="100"></image></pattern></defs>
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<svg id="canvasBackground" width="1000" height="200" x="10" y="10" overflow="none" style="pointer-events:none"><rect width="100%" height="100%" x="0" y="0" stroke="#000" fill="#000" style="pointer-events:none"></rect><svg id="canvasGrid" width="100%" height="100%" x="0" y="0" overflow="visible" display="none" style="display: inline;"><rect width="100%" height="100%" x="0" y="0" stroke-width="0" stroke="none" fill="url(#gridpattern)" style="pointer-events: none; display:visible;"></rect></svg></svg>
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<animate attributeName="opacity" begin="indefinite" dur="1" fill="freeze"></animate>
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<svg id="svgcontent" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 1000 480" overflow="visible" width="1000" height="200" x="100" y="20">
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<g id="layer1">
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<title>Layer 1</title>
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<g id="svg_group_with_matrix_transform" transform="matrix(0.5, 0, 0, 0.5, 10, 10)">
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<svg id="svg_2" x="100" y="0" class="symbol" preserveAspectRatio="xMaxYMax">
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<g id="svg_3">
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<rect id="svg_4" x="0" y="0" width="20" height="20" fill="#00FF00"></rect>
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</g>
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<g id="svg_5" display="none">
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<rect id="svg_6" x="0" y="0" width="20" height="20" fill="#A40000"></rect>
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</g>
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</svg>
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</g>
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<text id="svg_text_with_matrix_transform" transform="matrix(0.433735, 0, 0, 0.433735, 2, 4)" xml:space="preserve" text-anchor="middle" font-family="serif" font-size="24" y="0" x="61" stroke="#999999" fill="#999999">Some text</text>
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</g>
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<g>
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<title>Layer 2</title>
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</g>
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</svg>
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</svg>
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</div>
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</div></div>`, 'application/xml')
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const newNode = document.body.ownerDocument.importNode(editor.documentElement, true)
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document.body.append(newNode)
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currentLayer = document.getElementById('layer1')
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groupWithMatrixTransform = document.getElementById('svg_group_with_matrix_transform')
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textWithMatrixTransform = document.getElementById('svg_text_with_matrix_transform')
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})
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/**
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* Create an SVG element for a mock.
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* @param {module:utilities.SVGElementJSON} jsonMap
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* @returns {SVGElement}
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*/
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function mockCreateSVGElement (jsonMap) {
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const elem = document.createElementNS(NS.SVG, jsonMap.element)
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Object.entries(jsonMap.attr).forEach(([attr, value]) => {
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elem.setAttribute(attr, value)
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})
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return elem
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}
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/**
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* Mock of {@link module:utilities.EditorContext#addSVGElementsFromJson}.
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* @param {module:utilities.SVGElementJSON} json
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* @returns {SVGElement}
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*/
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function mockaddSVGElementsFromJson (json) {
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const elem = mockCreateSVGElement(json)
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currentLayer.append(elem)
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return elem
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}
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/**
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* Toward performance testing, fill document with clones of element.
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* @param {SVGElement} elem
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* @param {Integer} count
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* @returns {void}
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*/
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function fillDocumentByCloningElement (elem, count) {
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const elemId = elem.getAttribute('id') + '-'
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for (let index = 0; index < count; index++) {
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const clone = elem.cloneNode(true) // t: deep clone
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// Make sure you set a unique ID like a real document.
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clone.setAttribute('id', elemId + index)
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const { parentNode } = elem
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parentNode.append(clone)
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}
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}
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const mockPathActions = {
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resetOrientation (path) {
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if (path?.nodeName !== 'path') { return false }
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const tlist = path.transform.baseVal
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const m = math.transformListToTransform(tlist).matrix
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tlist.clear()
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path.removeAttribute('transform')
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const segList = path.pathSegList
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const len = segList.numberOfItems
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// let lastX, lastY;
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for (let i = 0; i < len; ++i) {
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const seg = segList.getItem(i)
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const type = seg.pathSegType
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if (type === 1) {
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continue
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}
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const pts = [];
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['', 1, 2].forEach(function (n) {
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const x = seg['x' + n]
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const y = seg['y' + n]
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if (x !== undefined && y !== undefined) {
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const pt = math.transformPoint(x, y, m)
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pts.splice(pts.length, 0, pt.x, pt.y)
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}
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})
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// path.replacePathSeg(type, i, pts, path);
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}
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return undefined
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}
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}
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// //////////////////////////////////////////////////////////
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// Performance times with various browsers on Macbook 2011 8MB RAM OS X El Capitan 10.11.4
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//
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// To see 'Before Optimization' performance, making the following two edits.
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// 1. utilities.getStrokedBBox - change if( elems.length === 1) to if( false && elems.length === 1)
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// 2. utilities.getBBoxWithTransform - uncomment 'Old technique that was very slow'
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// Chrome
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// Before Optimization
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// Pass1 svgCanvas.getStrokedBBox total ms 4,218, ave ms 41.0, min/max 37 51
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// Pass2 svgCanvas.getStrokedBBox total ms 4,458, ave ms 43.3, min/max 32 63
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// Optimized Code
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// Pass1 svgCanvas.getStrokedBBox total ms 1,112, ave ms 10.8, min/max 9 20
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// Pass2 svgCanvas.getStrokedBBox total ms 34, ave ms 0.3, min/max 0 20
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// Firefox
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// Before Optimization
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// Pass1 svgCanvas.getStrokedBBox total ms 3,794, ave ms 36.8, min/max 33 48
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// Pass2 svgCanvas.getStrokedBBox total ms 4,049, ave ms 39.3, min/max 28 53
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// Optimized Code
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// Pass1 svgCanvas.getStrokedBBox total ms 104, ave ms 1.0, min/max 0 23
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// Pass2 svgCanvas.getStrokedBBox total ms 71, ave ms 0.7, min/max 0 23
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// Safari
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// Before Optimization
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// Pass1 svgCanvas.getStrokedBBox total ms 4,840, ave ms 47.0, min/max 45 62
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// Pass2 svgCanvas.getStrokedBBox total ms 4,849, ave ms 47.1, min/max 34 62
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// Optimized Code
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// Pass1 svgCanvas.getStrokedBBox total ms 42, ave ms 0.4, min/max 0 23
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// Pass2 svgCanvas.getStrokedBBox total ms 17, ave ms 0.2, min/max 0 23
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it('Test svgCanvas.getStrokedBBox() performance with matrix transforms', function () {
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const { getStrokedBBox } = utilities
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const { children } = currentLayer
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let lastTime; let now
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let min = Number.MAX_VALUE
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let max = 0
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let total = 0
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fillDocumentByCloningElement(groupWithMatrixTransform, 50)
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fillDocumentByCloningElement(textWithMatrixTransform, 50)
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// The first pass through all elements is slower.
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const count = children.length
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const start = lastTime = now = Date.now()
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// Skip the first child which is the title.
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for (let index = 1; index < count; index++) {
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const child = children[index]
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/* const obj = */ getStrokedBBox([child], mockaddSVGElementsFromJson, mockPathActions)
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now = Date.now(); const delta = now - lastTime; lastTime = now
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total += delta
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min = Math.min(min, delta)
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max = Math.max(max, delta)
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}
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total = lastTime - start
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const ave = total / count
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assert.isBelow(ave, 20, 'svgedit.utilities.getStrokedBBox average execution time is less than 20 ms')
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console.log('Pass1 svgCanvas.getStrokedBBox total ms ' + total + ', ave ms ' + ave.toFixed(1) + ',\t min/max ' + min + ' ' + max)
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return new Promise((resolve) => {
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// The second pass is two to ten times faster.
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setTimeout(function () {
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const ct = children.length
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const strt = lastTime = now = Date.now()
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// Skip the first child which is the title.
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for (let index = 1; index < ct; index++) {
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const child = children[index]
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/* const obj = */ getStrokedBBox([child], mockaddSVGElementsFromJson, mockPathActions)
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now = Date.now(); const delta = now - lastTime; lastTime = now
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total += delta
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min = Math.min(min, delta)
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max = Math.max(max, delta)
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}
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total = lastTime - strt
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const avg = total / ct
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assert.isBelow(avg, 2, 'svgedit.utilities.getStrokedBBox average execution time is less than 1 ms')
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console.log('Pass2 svgCanvas.getStrokedBBox total ms ' + total + ', ave ms ' + avg.toFixed(1) + ',\t min/max ' + min + ' ' + max)
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resolve()
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})
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})
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})
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})
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