86 lines
2.7 KiB
JavaScript
86 lines
2.7 KiB
JavaScript
'use strict'
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function Cursor (dotgrid) {
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this.pos = { x: 0, y: 0 }
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this.lastPos = { x: 0, y: 0 }
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this.translation = null
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this.operation = null
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this.translate = function (from = null, to = null, multi = false, copy = false, layer = false) {
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if ((from || to) && this.translation === null) { this.translation = { multi: multi, copy: copy, layer: layer } }
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if (from) { this.translation.from = from }
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if (to) { this.translation.to = to }
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if (!from && !to) {
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this.translation = null
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}
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}
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this.down = function (e) {
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this.pos = this.atEvent(e)
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if (dotgrid.tool.vertexAt(this.pos)) {
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this.translate(this.pos, this.pos, e.shiftKey, e.ctrlKey || e.metaKey, e.altKey)
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}
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dotgrid.renderer.update()
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dotgrid.interface.update()
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e.preventDefault()
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}
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this.move = function (e) {
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this.pos = this.atEvent(e)
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if (this.translation) {
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this.translate(null, this.pos)
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}
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if (this.lastPos.x !== this.pos.x || this.lastPos.y !== this.pos.y) {
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dotgrid.renderer.update()
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}
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dotgrid.interface.update()
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this.lastPos = this.pos
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e.preventDefault()
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}
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this.up = function (e) {
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this.pos = this.atEvent(e)
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if (this.translation && !isEqual(this.translation.from, this.translation.to)) {
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if (this.translation.layer === true) { dotgrid.tool.translateLayer(this.translation.from, this.translation.to) } else if (this.translation.copy) { dotgrid.tool.translateCopy(this.translation.from, this.translation.to) } else if (this.translation.multi) { dotgrid.tool.translateMulti(this.translation.from, this.translation.to) } else { dotgrid.tool.translate(this.translation.from, this.translation.to) }
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} else if (e.target.id === 'guide') {
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dotgrid.tool.addVertex({ x: this.pos.x, y: this.pos.y })
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dotgrid.picker.stop()
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}
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this.translate()
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dotgrid.interface.update()
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dotgrid.renderer.update()
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e.preventDefault()
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}
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this.alt = function (e) {
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this.pos = this.atEvent(e)
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dotgrid.tool.removeSegmentsAt(this.pos)
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e.preventDefault()
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setTimeout(() => {
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dotgrid.tool.clear()
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}, 150)
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}
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this.atEvent = function (e) {
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return this.snapPos(this.relativePos({ x: e.clientX, y: e.clientY }))
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}
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this.relativePos = function (pos) {
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return {
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x: pos.x - dotgrid.renderer.el.offsetLeft,
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y: pos.y - dotgrid.renderer.el.offsetTop
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}
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}
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this.snapPos = function (pos) {
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return {
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x: clamp(step(pos.x, 15), 15, dotgrid.tool.settings.size.width - 15),
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y: clamp(step(pos.y, 15), 15, dotgrid.tool.settings.size.height - 15)
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}
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}
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function isEqual (a, b) { return a.x === b.x && a.y === b.y }
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function clamp (v, min, max) { return v < min ? min : v > max ? max : v }
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function step (v, s) { return Math.round(v / s) * s }
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}
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