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freesewing/packages/plugin-round/src/index.js
2019-08-03 15:03:33 +02:00

45 lines
1.6 KiB
JavaScript

import { name, version } from '../package.json'
export default {
name: name,
version: version,
hooks: {
preRender: function(svg) {
if (svg.attributes.get('freesewing:plugin-round') === false)
svg.attributes.set('freesewing:plugin-round', version)
}
},
macros: {
round: function(so) {
const C = 0.55191502449
// Find angle between points
let from = so.from
let to = so.to
let via = so.via
let radius = so.radius
let prefix = so.prefix
let angle1 = from.angle(via)
let angle2 = via.angle(to)
if ((Math.round(angle1) - Math.round(angle2)) % 90 !== 0)
console.log('Warning: The round macro only handles 90 degree angles correctly.')
let fd = from.dist(via)
let td = to.dist(via)
if (radius > fd || radius > td || typeof radius === 'undefined') radius = fd > td ? td : fd
this.points[prefix + 'Start'] = via.shiftTowards(from, radius)
this.points[prefix + 'Cp1'] = via.shiftTowards(from, radius * (1 - C))
this.points[prefix + 'Cp2'] = via.shiftTowards(to, radius * (1 - C))
this.points[prefix + 'End'] = via.shiftTowards(to, radius)
this.paths[prefix + 'Rounded'] = new this.Path()
.move(this.points[prefix + 'Start'])
.curve(
this.points[prefix + 'Cp1'],
this.points[prefix + 'Cp2'],
this.points[prefix + 'End']
)
.attr('class', so.class ? so.class : '')
if (typeof so.render !== 'undefined' && so.render)
this.paths[prefix + 'Rounded'].render = true
else this.paths[prefix + 'Rounded'].render = false
}
}
}