119 lines
3.9 KiB
JavaScript
119 lines
3.9 KiB
JavaScript
'use strict'
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/* global dotgrid */
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function Generator (layer, style) {
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this.layer = layer
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this.style = style
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function operate (layer, offset, scale, mirror = 0, angle = 0) {
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const l = copy(layer)
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for (const k1 in l) {
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const seg = l[k1]
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for (const k2 in seg.vertices) {
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if (mirror === 1 || mirror === 3) { seg.vertices[k2].x = (dotgrid.tool.settings.size.width) - seg.vertices[k2].x }
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if (mirror === 2 || mirror === 3) { seg.vertices[k2].y = (dotgrid.tool.settings.size.height) - seg.vertices[k2].y }
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// Offset
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seg.vertices[k2].x += offset.x
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seg.vertices[k2].y += offset.y
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// Rotate
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const center = { x: (dotgrid.tool.settings.size.width / 2) + offset.x + (7.5), y: (dotgrid.tool.settings.size.height / 2) + offset.y + 30 }
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seg.vertices[k2] = rotatePoint(seg.vertices[k2], center, angle)
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// Scale
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seg.vertices[k2].x *= scale
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seg.vertices[k2].y *= scale
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}
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}
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return l
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}
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this.render = function (prev, segment, mirror = 0) {
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const type = segment.type
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const vertices = segment.vertices
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let html = ''
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let skip = 0
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for (const id in vertices) {
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if (skip > 0) { skip -= 1; continue }
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const vertex = vertices[parseInt(id)]
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const next = vertices[parseInt(id) + 1]
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const afterNext = vertices[parseInt(id) + 2]
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if (parseInt(id) === 0 && !prev) {
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html += `M${vertex.x},${vertex.y} `
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} else if (parseInt(id) === 0 && prev && (prev.x !== vertex.x || prev.y !== vertex.y)) {
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html += `M${vertex.x},${vertex.y} `
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}
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if (type === 'line') {
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html += this._line(vertex)
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} else if (type === 'arc_c') {
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const clock = mirror > 0 && mirror < 3 ? '0,0' : '0,1'
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html += this._arc(vertex, next, clock)
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} else if (type === 'arc_r') {
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const clock = mirror > 0 && mirror < 3 ? '0,1' : '0,0'
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html += this._arc(vertex, next, clock)
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} else if (type === 'arc_c_full') {
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const clock = mirror > 0 ? '1,0' : '1,1'
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html += this._arc(vertex, next, clock)
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} else if (type === 'arc_r_full') {
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const clock = mirror > 0 ? '1,1' : '1,0'
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html += this._arc(vertex, next, clock)
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} else if (type === 'bezier') {
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html += this._bezier(next, afterNext)
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skip = 1
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}
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}
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if (segment.type === 'close') {
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html += 'Z '
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}
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return html
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}
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this._line = function (a) {
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return `L${a.x},${a.y} `
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}
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this._arc = function (a, b, c) {
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if (!a || !b || !c) { return '' }
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const offset = { x: b.x - a.x, y: b.y - a.y }
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if (offset.x === 0 || offset.y === 0) { return this._line(b) }
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return `A${Math.abs(b.x - a.x)},${Math.abs(b.y - a.y)} 0 ${c} ${b.x},${b.y} `
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}
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this._bezier = function (a, b) {
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if (!a || !b) { return '' }
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return `Q${a.x},${a.y} ${b.x},${b.y} `
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}
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this.convert = function (layer, mirror, angle) {
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let s = ''
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let prev = null
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for (const id in layer) {
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const seg = layer[parseInt(id)]
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s += `${this.render(prev, seg, mirror)}`
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prev = seg.vertices ? seg.vertices[seg.vertices.length - 1] : null
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}
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return s
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}
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this.toString = function (offset = { x: 0, y: 0 }, scale = 1, mirror = this.style && this.style.mirror_style ? this.style.mirror_style : 0) {
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let s = this.convert(operate(this.layer, offset, scale))
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if (mirror === 1 || mirror === 2 || mirror === 3) {
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s += this.convert(operate(this.layer, offset, scale, mirror), mirror)
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}
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return s
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}
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function copy (data) { return data ? JSON.parse(JSON.stringify(data)) : [] }
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function rotatePoint (point, origin, angle) { angle = angle * Math.PI / 180.0; return { x: (Math.cos(angle) * (point.x - origin.x) - Math.sin(angle) * (point.y - origin.y) + origin.x).toFixed(1), y: (Math.sin(angle) * (point.x - origin.x) + Math.cos(angle) * (point.y - origin.y) + origin.y).toFixed(1) } }
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}
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