517 lines
19 KiB
JavaScript
517 lines
19 KiB
JavaScript
import 'pathseg'
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import { NS } from '../../../instrumented/svgcanvas/namespaces.js'
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import * as utilities from '../../../instrumented/svgcanvas/utilities.js'
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import * as math from '../../../instrumented/svgcanvas/math.js'
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import * as path from '../../../instrumented/svgcanvas/path.js'
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import setAssertionMethods from '../../support/assert-close.js'
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// eslint-disable-next-line
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chai.use(setAssertionMethods)
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describe('utilities bbox', function () {
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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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let mockaddSVGElementsFromJsonCallCount = 0
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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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svgroot.append(elem)
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mockaddSVGElementsFromJsonCallCount++
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return elem
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}
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const mockPathActions = {
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resetOrientation (pth) {
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if (pth?.nodeName !== 'path') { return false }
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const tlist = pth.transform.baseVal
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const m = math.transformListToTransform(tlist).matrix
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tlist.clear()
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pth.removeAttribute('transform')
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const segList = pth.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) { continue }
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const pts = [];
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['', 1, 2].forEach(function (n) {
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const x = seg['x' + n]; 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, pth)
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}
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return undefined
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}
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}
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const EPSILON = 0.001
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let svgroot
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beforeEach(() => {
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document.body.textContent = ''
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// const svg = document.createElementNS(NS.SVG, 'svg');
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const sandbox = document.createElement('div')
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sandbox.id = 'sandbox'
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document.body.append(sandbox)
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svgroot = mockCreateSVGElement({
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element: 'svg',
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attr: { id: 'svgroot' }
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})
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sandbox.append(svgroot)
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const mockSvgCanvas = {
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createSVGElement (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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getSvgRoot () { return svgroot }
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}
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path.init(mockSvgCanvas)
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mockaddSVGElementsFromJsonCallCount = 0
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})
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it('Test svgedit.utilities package', function () {
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assert.ok(utilities)
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assert.ok(utilities.getBBoxWithTransform)
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assert.ok(utilities.getStrokedBBox)
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assert.ok(utilities.getRotationAngleFromTransformList)
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assert.ok(utilities.getRotationAngle)
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})
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it('Test getBBoxWithTransform and no transform', function () {
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const { getBBoxWithTransform } = utilities
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let elem = mockCreateSVGElement({
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element: 'path',
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attr: { id: 'path', d: 'M0,1 L2,3' }
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})
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svgroot.append(elem)
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let bbox = getBBoxWithTransform(elem, mockaddSVGElementsFromJson, mockPathActions)
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assert.deepEqual(bbox, { x: 0, y: 1, width: 2, height: 2 })
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assert.equal(mockaddSVGElementsFromJsonCallCount, 0)
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elem.remove()
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elem = mockCreateSVGElement({
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element: 'rect',
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attr: { id: 'rect', x: '0', y: '1', width: '5', height: '10' }
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})
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svgroot.append(elem)
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bbox = getBBoxWithTransform(elem, mockaddSVGElementsFromJson, mockPathActions)
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assert.deepEqual(bbox, { x: 0, y: 1, width: 5, height: 10 })
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assert.equal(mockaddSVGElementsFromJsonCallCount, 0)
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elem.remove()
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elem = mockCreateSVGElement({
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element: 'line',
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attr: { id: 'line', x1: '0', y1: '1', x2: '5', y2: '6' }
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})
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svgroot.append(elem)
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bbox = getBBoxWithTransform(elem, mockaddSVGElementsFromJson, mockPathActions)
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assert.deepEqual(bbox, { x: 0, y: 1, width: 5, height: 5 })
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assert.equal(mockaddSVGElementsFromJsonCallCount, 0)
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elem.remove()
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elem = mockCreateSVGElement({
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element: 'rect',
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attr: { id: 'rect', x: '0', y: '1', width: '5', height: '10' }
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})
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const g = mockCreateSVGElement({
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element: 'g',
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attr: {}
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})
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g.append(elem)
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svgroot.append(g)
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bbox = getBBoxWithTransform(elem, mockaddSVGElementsFromJson, mockPathActions)
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assert.deepEqual(bbox, { x: 0, y: 1, width: 5, height: 10 })
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assert.equal(mockaddSVGElementsFromJsonCallCount, 0)
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g.remove()
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})
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it('Test getBBoxWithTransform and a rotation transform', function () {
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const { getBBoxWithTransform } = utilities
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let elem = mockCreateSVGElement({
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element: 'path',
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attr: { id: 'path', d: 'M10,10 L20,20', transform: 'rotate(45 10,10)' }
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})
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svgroot.append(elem)
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let bbox = getBBoxWithTransform(elem, mockaddSVGElementsFromJson, mockPathActions)
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assert.close(bbox.x, 10, EPSILON)
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assert.close(bbox.y, 10, EPSILON)
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assert.close(bbox.width, 0, EPSILON)
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assert.close(bbox.height, Math.sqrt(100 + 100), EPSILON)
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elem.remove()
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elem = mockCreateSVGElement({
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element: 'rect',
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attr: { id: 'rect', x: '10', y: '10', width: '10', height: '20', transform: 'rotate(90 15,20)' }
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})
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svgroot.append(elem)
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bbox = getBBoxWithTransform(elem, mockaddSVGElementsFromJson, mockPathActions)
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assert.close(bbox.x, 5, EPSILON)
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assert.close(bbox.y, 15, EPSILON)
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assert.close(bbox.width, 20, EPSILON)
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assert.close(bbox.height, 10, EPSILON)
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assert.equal(mockaddSVGElementsFromJsonCallCount, 1)
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elem.remove()
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const rect = { x: 10, y: 10, width: 10, height: 20 }
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const angle = 45
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const origin = { x: 15, y: 20 }
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elem = mockCreateSVGElement({
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element: 'rect',
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attr: { id: 'rect2', x: rect.x, y: rect.y, width: rect.width, height: rect.height, transform: 'rotate(' + angle + ' ' + origin.x + ',' + origin.y + ')' }
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})
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svgroot.append(elem)
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mockaddSVGElementsFromJsonCallCount = 0
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bbox = getBBoxWithTransform(elem, mockaddSVGElementsFromJson, mockPathActions)
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const r2 = rotateRect(rect, angle, origin)
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assert.close(bbox.x, r2.x, EPSILON, 'rect2 x is ' + r2.x)
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assert.close(bbox.y, r2.y, EPSILON, 'rect2 y is ' + r2.y)
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assert.close(bbox.width, r2.width, EPSILON, 'rect2 width is' + r2.width)
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assert.close(bbox.height, r2.height, EPSILON, 'rect2 height is ' + r2.height)
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assert.equal(mockaddSVGElementsFromJsonCallCount, 0)
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elem.remove()
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// Same as previous but wrapped with g and the transform is with the g.
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elem = mockCreateSVGElement({
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element: 'rect',
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attr: { id: 'rect3', x: rect.x, y: rect.y, width: rect.width, height: rect.height }
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})
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const g = mockCreateSVGElement({
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element: 'g',
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attr: { transform: 'rotate(' + angle + ' ' + origin.x + ',' + origin.y + ')' }
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})
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g.append(elem)
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svgroot.append(g)
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mockaddSVGElementsFromJsonCallCount = 0
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bbox = getBBoxWithTransform(g, mockaddSVGElementsFromJson, mockPathActions)
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assert.close(bbox.x, r2.x, EPSILON, 'rect2 x is ' + r2.x)
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assert.close(bbox.y, r2.y, EPSILON, 'rect2 y is ' + r2.y)
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assert.close(bbox.width, r2.width, EPSILON, 'rect2 width is' + r2.width)
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assert.close(bbox.height, r2.height, EPSILON, 'rect2 height is ' + r2.height)
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assert.equal(mockaddSVGElementsFromJsonCallCount, 0)
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g.remove()
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elem = mockCreateSVGElement({
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element: 'ellipse',
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attr: { id: 'ellipse1', cx: '100', cy: '100', rx: '50', ry: '50', transform: 'rotate(45 100,100)' }
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})
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svgroot.append(elem)
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mockaddSVGElementsFromJsonCallCount = 0
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bbox = getBBoxWithTransform(elem, mockaddSVGElementsFromJson, mockPathActions)
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/** @todo: Review these test the BBox algorithm is using the bezier control points to calculate the bounding box. Should be 50, 50, 100, 100. */
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// assert.ok(bbox.x > 45 && bbox.x <= 50);
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assert.ok(bbox.y > 45 && bbox.y <= 50)
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// assert.ok(bbox.width >= 100 && bbox.width < 110);
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// assert.ok(bbox.height >= 100 && bbox.height < 110);
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assert.equal(mockaddSVGElementsFromJsonCallCount, 1)
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elem.remove()
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})
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it('Test getBBoxWithTransform with rotation and matrix transforms', function () {
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const { getBBoxWithTransform } = utilities
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let tx = 10 // tx right
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let ty = 10 // tx down
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let txInRotatedSpace = Math.sqrt(tx * tx + ty * ty) // translate in rotated 45 space.
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let tyInRotatedSpace = 0
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let matrix = 'matrix(1,0,0,1,' + txInRotatedSpace + ',' + tyInRotatedSpace + ')'
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let elem = mockCreateSVGElement({
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element: 'path',
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attr: { id: 'path', d: 'M10,10 L20,20', transform: 'rotate(45 10,10) ' + matrix }
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})
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svgroot.append(elem)
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let bbox = getBBoxWithTransform(elem, mockaddSVGElementsFromJson, mockPathActions)
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assert.close(bbox.x, 10 + tx, EPSILON)
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assert.close(bbox.y, 10 + ty, EPSILON)
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assert.close(bbox.width, 0, EPSILON)
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assert.close(bbox.height, Math.sqrt(100 + 100), EPSILON)
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elem.remove()
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txInRotatedSpace = tx // translate in rotated 90 space.
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tyInRotatedSpace = -ty
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matrix = 'matrix(1,0,0,1,' + txInRotatedSpace + ',' + tyInRotatedSpace + ')'
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elem = mockCreateSVGElement({
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element: 'rect',
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attr: { id: 'rect', x: '10', y: '10', width: '10', height: '20', transform: 'rotate(90 15,20) ' + matrix }
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})
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svgroot.append(elem)
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bbox = getBBoxWithTransform(elem, mockaddSVGElementsFromJson, mockPathActions)
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assert.close(bbox.x, 5 + tx, EPSILON)
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assert.close(bbox.y, 15 + ty, EPSILON)
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assert.close(bbox.width, 20, EPSILON)
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assert.close(bbox.height, 10, EPSILON)
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elem.remove()
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const rect = { x: 10, y: 10, width: 10, height: 20 }
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const angle = 45
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const origin = { x: 15, y: 20 }
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tx = 10 // tx right
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ty = 10 // tx down
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txInRotatedSpace = Math.sqrt(tx * tx + ty * ty) // translate in rotated 45 space.
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tyInRotatedSpace = 0
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matrix = 'matrix(1,0,0,1,' + txInRotatedSpace + ',' + tyInRotatedSpace + ')'
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elem = mockCreateSVGElement({
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element: 'rect',
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attr: { id: 'rect2', x: rect.x, y: rect.y, width: rect.width, height: rect.height, transform: 'rotate(' + angle + ' ' + origin.x + ',' + origin.y + ') ' + matrix }
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})
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svgroot.append(elem)
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bbox = getBBoxWithTransform(elem, mockaddSVGElementsFromJson, mockPathActions)
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const r2 = rotateRect(rect, angle, origin)
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assert.close(bbox.x, r2.x + tx, EPSILON, 'rect2 x is ' + r2.x)
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assert.close(bbox.y, r2.y + ty, EPSILON, 'rect2 y is ' + r2.y)
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assert.close(bbox.width, r2.width, EPSILON, 'rect2 width is' + r2.width)
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assert.close(bbox.height, r2.height, EPSILON, 'rect2 height is ' + r2.height)
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elem.remove()
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// Same as previous but wrapped with g and the transform is with the g.
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elem = mockCreateSVGElement({
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element: 'rect',
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attr: { id: 'rect3', x: rect.x, y: rect.y, width: rect.width, height: rect.height }
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})
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const g = mockCreateSVGElement({
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element: 'g',
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attr: { transform: 'rotate(' + angle + ' ' + origin.x + ',' + origin.y + ') ' + matrix }
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})
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g.append(elem)
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svgroot.append(g)
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bbox = getBBoxWithTransform(g, mockaddSVGElementsFromJson, mockPathActions)
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assert.close(bbox.x, r2.x + tx, EPSILON, 'rect2 x is ' + r2.x)
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assert.close(bbox.y, r2.y + ty, EPSILON, 'rect2 y is ' + r2.y)
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assert.close(bbox.width, r2.width, EPSILON, 'rect2 width is' + r2.width)
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assert.close(bbox.height, r2.height, EPSILON, 'rect2 height is ' + r2.height)
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g.remove()
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elem = mockCreateSVGElement({
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element: 'ellipse',
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attr: { id: 'ellipse1', cx: '100', cy: '100', rx: '50', ry: '50', transform: 'rotate(45 100,100) ' + matrix }
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})
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svgroot.append(elem)
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bbox = getBBoxWithTransform(elem, mockaddSVGElementsFromJson, mockPathActions)
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/** @todo: the BBox algorithm is using the bezier control points to calculate the bounding box. Should be 50, 50, 100, 100. */
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// assert.ok(bbox.x > 45 + tx && bbox.x <= 50 + tx);
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assert.ok(bbox.y > 45 + ty && bbox.y <= 50 + ty)
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// assert.ok(bbox.width >= 100 && bbox.width < 110);
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// assert.ok(bbox.height >= 100 && bbox.height < 110);
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elem.remove()
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})
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it('Test getStrokedBBox with stroke-width 10', function () {
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const { getStrokedBBox } = utilities
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const strokeWidth = 10
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let elem = mockCreateSVGElement({
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element: 'path',
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attr: { id: 'path', d: 'M0,1 L2,3', 'stroke-width': strokeWidth }
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})
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svgroot.append(elem)
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let bbox = getStrokedBBox([elem], mockaddSVGElementsFromJson, mockPathActions)
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assert.deepEqual(bbox, { x: 0 - strokeWidth / 2, y: 1 - strokeWidth / 2, width: 2 + strokeWidth, height: 2 + strokeWidth })
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elem.remove()
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elem = mockCreateSVGElement({
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element: 'rect',
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attr: { id: 'rect', x: '0', y: '1', width: '5', height: '10', 'stroke-width': strokeWidth }
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})
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svgroot.append(elem)
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bbox = getStrokedBBox([elem], mockaddSVGElementsFromJson, mockPathActions)
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assert.deepEqual(bbox, { x: 0 - strokeWidth / 2, y: 1 - strokeWidth / 2, width: 5 + strokeWidth, height: 10 + strokeWidth })
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elem.remove()
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elem = mockCreateSVGElement({
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element: 'line',
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attr: { id: 'line', x1: '0', y1: '1', x2: '5', y2: '6', 'stroke-width': strokeWidth }
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})
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svgroot.append(elem)
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bbox = getStrokedBBox([elem], mockaddSVGElementsFromJson, mockPathActions)
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assert.deepEqual(bbox, { x: 0 - strokeWidth / 2, y: 1 - strokeWidth / 2, width: 5 + strokeWidth, height: 5 + strokeWidth })
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elem.remove()
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elem = mockCreateSVGElement({
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element: 'rect',
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attr: { id: 'rect', x: '0', y: '1', width: '5', height: '10', 'stroke-width': strokeWidth }
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})
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const g = mockCreateSVGElement({
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element: 'g',
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attr: {}
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})
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g.append(elem)
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svgroot.append(g)
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bbox = getStrokedBBox([elem], mockaddSVGElementsFromJson, mockPathActions)
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assert.deepEqual(bbox, { x: 0 - strokeWidth / 2, y: 1 - strokeWidth / 2, width: 5 + strokeWidth, height: 10 + strokeWidth })
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g.remove()
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})
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it("Test getStrokedBBox with stroke-width 'none'", function () {
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const { getStrokedBBox } = utilities
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let elem = mockCreateSVGElement({
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element: 'path',
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attr: { id: 'path', d: 'M0,1 L2,3', 'stroke-width': 'none' }
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})
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svgroot.append(elem)
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let bbox = getStrokedBBox([elem], mockaddSVGElementsFromJson, mockPathActions)
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assert.deepEqual(bbox, { x: 0, y: 1, width: 2, height: 2 })
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elem.remove()
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elem = mockCreateSVGElement({
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element: 'rect',
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attr: { id: 'rect', x: '0', y: '1', width: '5', height: '10', 'stroke-width': 'none' }
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})
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svgroot.append(elem)
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bbox = getStrokedBBox([elem], mockaddSVGElementsFromJson, mockPathActions)
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assert.deepEqual(bbox, { x: 0, y: 1, width: 5, height: 10 })
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elem.remove()
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elem = mockCreateSVGElement({
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element: 'line',
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attr: { id: 'line', x1: '0', y1: '1', x2: '5', y2: '6', 'stroke-width': 'none' }
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})
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svgroot.append(elem)
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bbox = getStrokedBBox([elem], mockaddSVGElementsFromJson, mockPathActions)
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assert.deepEqual(bbox, { x: 0, y: 1, width: 5, height: 5 })
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elem.remove()
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elem = mockCreateSVGElement({
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element: 'rect',
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attr: { id: 'rect', x: '0', y: '1', width: '5', height: '10', 'stroke-width': 'none' }
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})
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const g = mockCreateSVGElement({
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element: 'g',
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attr: {}
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})
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g.append(elem)
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svgroot.append(g)
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bbox = getStrokedBBox([elem], mockaddSVGElementsFromJson, mockPathActions)
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assert.deepEqual(bbox, { x: 0, y: 1, width: 5, height: 10 })
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g.remove()
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})
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it('Test getStrokedBBox with no stroke-width attribute', function () {
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const { getStrokedBBox } = utilities
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let elem = mockCreateSVGElement({
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element: 'path',
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attr: { id: 'path', d: 'M0,1 L2,3' }
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})
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svgroot.append(elem)
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let bbox = getStrokedBBox([elem], mockaddSVGElementsFromJson, mockPathActions)
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assert.deepEqual(bbox, { x: 0, y: 1, width: 2, height: 2 })
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elem.remove()
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elem = mockCreateSVGElement({
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element: 'rect',
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attr: { id: 'rect', x: '0', y: '1', width: '5', height: '10' }
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})
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svgroot.append(elem)
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bbox = getStrokedBBox([elem], mockaddSVGElementsFromJson, mockPathActions)
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assert.deepEqual(bbox, { x: 0, y: 1, width: 5, height: 10 })
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elem.remove()
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elem = mockCreateSVGElement({
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element: 'line',
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attr: { id: 'line', x1: '0', y1: '1', x2: '5', y2: '6' }
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})
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svgroot.append(elem)
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bbox = getStrokedBBox([elem], mockaddSVGElementsFromJson, mockPathActions)
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assert.deepEqual(bbox, { x: 0, y: 1, width: 5, height: 5 })
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elem.remove()
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elem = mockCreateSVGElement({
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element: 'rect',
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attr: { id: 'rect', x: '0', y: '1', width: '5', height: '10' }
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})
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const g = mockCreateSVGElement({
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element: 'g',
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attr: {}
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})
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g.append(elem)
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svgroot.append(g)
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bbox = getStrokedBBox([elem], mockaddSVGElementsFromJson, mockPathActions)
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assert.deepEqual(bbox, { x: 0, y: 1, width: 5, height: 10 })
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g.remove()
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})
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/**
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* Returns radians for degrees.
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* @param {Float} degrees
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* @returns {Float}
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*/
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function radians (degrees) {
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return degrees * Math.PI / 180
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}
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/**
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*
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* @param {module:utilities.BBoxObject} point
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* @param {Float} angle
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* @param {module:math.XYObject} origin
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* @returns {module:math.XYObject}
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*/
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function rotatePoint (point, angle, origin) {
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if (!origin) {
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origin = { x: 0, y: 0 }
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}
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const x = point.x - origin.x
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const y = point.y - origin.y
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const theta = radians(angle)
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return {
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x: x * Math.cos(theta) + y * Math.sin(theta) + origin.x,
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y: x * Math.sin(theta) + y * Math.cos(theta) + origin.y
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}
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}
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/**
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|
*
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* @param {module:utilities.BBoxObject} rect
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* @param {Float} angle
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* @param {module:math.XYObject} origin
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* @returns {module:utilities.BBoxObject}
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*/
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function rotateRect (rect, angle, origin) {
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const tl = rotatePoint({ x: rect.x, y: rect.y }, angle, origin)
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const tr = rotatePoint({ x: rect.x + rect.width, y: rect.y }, angle, origin)
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const br = rotatePoint({ x: rect.x + rect.width, y: rect.y + rect.height }, angle, origin)
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const bl = rotatePoint({ x: rect.x, y: rect.y + rect.height }, angle, origin)
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const minx = Math.min(tl.x, tr.x, bl.x, br.x)
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const maxx = Math.max(tl.x, tr.x, bl.x, br.x)
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const miny = Math.min(tl.y, tr.y, bl.y, br.y)
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const maxy = Math.max(tl.y, tr.y, bl.y, br.y)
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|
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return {
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x: minx,
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y: miny,
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width: (maxx - minx),
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height: (maxy - miny)
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|
}
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|
}
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|
})
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