pointvec/desktop/sources/scripts/cursor.js
Devine Lu Linvega 03cb438b9b Reverted io
2019-01-10 08:45:50 +12:00

100 lines
2.7 KiB
JavaScript

'use strict'
function Cursor () {
this.pos = { x: 0, y: 0 }
this.translation = null
this.operation = null
this.translate = function (from = null, to = null, multi = false, copy = false, layer = false) {
if ((from || to) && this.translation == null) { this.translation = { multi: multi, copy: copy, layer: layer } }
if (from) { this.translation.from = from }
if (to) { this.translation.to = to }
if (!from && !to) {
this.translation = null
}
}
this.down = function (e) {
this.pos = this.atEvent(e)
// Translation
if (DOTGRID.tool.vertexAt(this.pos)) {
this.translate(this.pos, this.pos, e.shiftKey, e.ctrlKey || e.metaKey, e.altKey)
}
DOTGRID.renderer.update()
DOTGRID.interface.update()
e.preventDefault()
}
this.last_pos = { x: 0, y: 0 }
this.move = function (e) {
this.pos = this.atEvent(e)
// Translation
if (this.translation) {
this.translate(null, this.pos)
}
if (this.last_pos.x != this.pos.x || this.last_pos.y != this.pos.y) {
DOTGRID.renderer.update()
}
DOTGRID.interface.update()
e.preventDefault()
this.last_pos = this.pos
}
this.up = function (e) {
this.pos = this.atEvent(e)
if (this.translation && !is_equal(this.translation.from, this.translation.to)) {
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) }
} else if (e.target.id == 'guide') {
DOTGRID.tool.addVertex({ x: this.pos.x, y: this.pos.y })
DOTGRID.picker.stop()
}
this.translate()
DOTGRID.interface.update()
DOTGRID.renderer.update()
e.preventDefault()
}
this.alt = function (e) {
this.pos = this.atEvent(e)
DOTGRID.tool.removeSegmentsAt(this.pos)
e.preventDefault()
setTimeout(() => { DOTGRID.tool.clear() }, 150)
}
// Position Mods
this.atEvent = function (e) {
return this.snapPos(this.relativePos({ x: e.clientX, y: e.clientY }))
}
this.relativePos = function (pos) {
return {
x: pos.x - DOTGRID.renderer.el.offsetLeft,
y: pos.y - DOTGRID.renderer.el.offsetTop
}
}
this.snapPos = function (pos) {
return {
x: clamp(step(pos.x, 15), 15, DOTGRID.tool.settings.size.width),
y: clamp(step(pos.y, 15), 15, DOTGRID.tool.settings.size.height)
}
}
function is_equal (a, b) { return a.x == b.x && a.y == b.y }
}