263 lines
8.5 KiB
JavaScript
263 lines
8.5 KiB
JavaScript
'use strict'
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/* global Image */
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/* global Path2D */
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/* global Generator */
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function Renderer (client) {
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this.el = document.createElement('canvas')
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this.el.id = 'guide'
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this.el.width = 640
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this.el.height = 640
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this.el.style.width = '320px'
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this.el.style.height = '320px'
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this.context = this.el.getContext('2d')
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this.showExtras = true
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this.scale = 2 // window.devicePixelRatio
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this.start = function () {
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this.update()
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}
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this.update = function (force = false) {
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this.resize()
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client.manager.update()
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const render = new Image()
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render.onload = () => {
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this.draw(render)
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}
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render.src = client.manager.svg64()
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}
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this.draw = function (render) {
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this.clear()
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this.drawMirror()
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this.drawGrid()
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this.drawRulers()
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this.drawRender(render) //
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this.drawVertices()
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this.drawHandles()
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this.drawTranslation()
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this.drawCursor()
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this.drawPreview()
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}
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this.clear = function () {
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this.context.clearRect(0, 0, this.el.width * this.scale, this.el.height * this.scale)
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}
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this.toggle = function () {
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this.showExtras = !this.showExtras
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this.update()
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client.interface.update(true)
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}
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this.resize = function () {
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const _target = client.getPaddedSize()
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const _current = { width: this.el.width / this.scale, height: this.el.height / this.scale }
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const offset = sizeOffset(_target, _current)
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if (offset.width === 0 && offset.height === 0) {
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return
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}
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console.log('Renderer', `Require resize: ${printSize(_target)}, from ${printSize(_current)}`)
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this.el.width = (_target.width) * this.scale
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this.el.height = (_target.height) * this.scale
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this.el.style.width = (_target.width) + 'px'
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this.el.style.height = (_target.height) + 'px'
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}
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// Collections
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this.drawMirror = function () {
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if (!this.showExtras) { return }
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if (client.tool.style().mirror_style === 0) { return }
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const middle = { x: client.tool.settings.size.width, y: client.tool.settings.size.height }
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if (client.tool.style().mirror_style === 1 || client.tool.style().mirror_style === 3) {
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this.drawRule({ x: middle.x, y: 15 * this.scale }, { x: middle.x, y: (client.tool.settings.size.height) * this.scale })
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}
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if (client.tool.style().mirror_style === 2 || client.tool.style().mirror_style === 3) {
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this.drawRule({ x: 15 * this.scale, y: middle.y }, { x: (client.tool.settings.size.width) * this.scale, y: middle.y })
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}
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}
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this.drawHandles = function () {
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if (!this.showExtras) { return }
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for (const segmentId in client.tool.layer()) {
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const segment = client.tool.layer()[segmentId]
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for (const vertexId in segment.vertices) {
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const vertex = segment.vertices[vertexId]
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this.drawHandle(vertex)
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}
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}
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}
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this.drawVertices = function () {
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for (const id in client.tool.vertices) {
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this.drawVertex(client.tool.vertices[id])
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}
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}
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this.drawGrid = function () {
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if (!this.showExtras) { return }
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const markers = { w: parseInt(client.tool.settings.size.width / 15), h: parseInt(client.tool.settings.size.height / 15) }
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this.context.beginPath()
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this.context.lineWidth = 2
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this.context.fillStyle = client.theme.active.b_med
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for (let x = markers.w - 1; x >= 0; x--) {
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for (let y = markers.h - 1; y >= 0; y--) {
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const isStep = x % 4 === 0 && y % 4 === 0
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// Don't draw margins
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if (x === 0 || y === 0) { continue }
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const pos = {
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x: parseInt(x * 15),
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y: parseInt(y * 15)
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}
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const radius = isStep ? 2.5 : 1.5
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this.context.moveTo(pos.x * this.scale, pos.y * this.scale)
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this.context.arc(pos.x * this.scale, pos.y * this.scale, radius, 0, 2 * Math.PI, false)
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}
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}
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this.context.fill()
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this.context.closePath()
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}
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this.drawRulers = function () {
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if (!client.cursor.translation) { return }
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const pos = client.cursor.translation.to
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const bottom = (client.tool.settings.size.height * this.scale)
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const right = (client.tool.settings.size.width * this.scale)
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this.drawRule({ x: pos.x * this.scale, y: 0 }, { x: pos.x * this.scale, y: bottom })
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this.drawRule({ x: 0, y: pos.y * this.scale }, { x: right, y: pos.y * this.scale })
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}
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this.drawPreview = function () {
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const operation = client.cursor.operation && client.cursor.operation.cast ? client.cursor.operation.cast : null
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if (!client.tool.canCast(operation)) { return }
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if (operation === 'close') { return }
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const path = new Generator([{ vertices: client.tool.vertices, type: operation }]).toString({ x: 0, y: 0 }, 2)
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const style = {
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color: client.theme.active.f_med,
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thickness: 2,
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strokeLinecap: 'round',
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strokeLinejoin: 'round',
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strokeLineDash: [5, 15]
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}
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this.drawPath(path, style)
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}
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// Elements
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this.drawVertex = function (pos, radius = 5) {
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this.context.beginPath()
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this.context.lineWidth = 2
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this.context.arc((pos.x * this.scale), (pos.y * this.scale), radius, 0, 2 * Math.PI, false)
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this.context.fillStyle = client.theme.active.f_low
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this.context.fill()
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this.context.closePath()
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}
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this.drawRule = function (from, to) {
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this.context.beginPath()
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this.context.moveTo(from.x, from.y)
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this.context.lineTo(to.x, to.y)
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this.context.lineCap = 'round'
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this.context.lineWidth = 3
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this.context.strokeStyle = client.theme.active.b_low
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this.context.stroke()
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this.context.closePath()
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}
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this.drawHandle = function (pos, radius = 6) {
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this.context.beginPath()
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this.context.arc(Math.abs(pos.x * -this.scale), Math.abs(pos.y * this.scale), radius + 3, 0, 2 * Math.PI, false)
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this.context.fillStyle = client.theme.active.f_high
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this.context.fill()
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this.context.closePath()
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this.context.beginPath()
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this.context.arc((pos.x * this.scale), (pos.y * this.scale), radius - 3, 0, 2 * Math.PI, false)
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this.context.fillStyle = client.theme.active.b_low
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this.context.fill()
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this.context.closePath()
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}
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this.drawPath = function (path, style) {
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const p = new Path2D(path)
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this.context.strokeStyle = style.color
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this.context.lineWidth = style.thickness * this.scale
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this.context.lineCap = style.strokeLinecap
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this.context.lineJoin = style.strokeLinejoin
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if (style.fill && style.fill !== 'none') {
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this.context.fillStyle = style.color
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this.context.fill(p)
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}
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// Dash
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this.context.save()
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if (style.strokeLineDash) { this.context.setLineDash(style.strokeLineDash) } else { this.context.setLineDash([]) }
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this.context.stroke(p)
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this.context.restore()
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}
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this.drawTranslation = function () {
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if (!client.cursor.translation) { return }
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this.context.save()
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this.context.beginPath()
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this.context.moveTo((client.cursor.translation.from.x * this.scale), (client.cursor.translation.from.y * this.scale))
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this.context.lineTo((client.cursor.translation.to.x * this.scale), (client.cursor.translation.to.y * this.scale))
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this.context.lineCap = 'round'
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this.context.lineWidth = 5
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this.context.strokeStyle = client.cursor.translation.multi === true ? client.theme.active.b_inv : client.cursor.translation.copy === true ? client.theme.active.f_med : client.theme.active.f_low
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this.context.setLineDash([5, 10])
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this.context.stroke()
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this.context.closePath()
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this.context.setLineDash([])
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this.context.restore()
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}
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this.drawCursor = function (pos = client.cursor.pos, radius = client.tool.style().thickness - 1) {
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this.context.save()
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this.context.beginPath()
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this.context.lineWidth = 3
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this.context.lineCap = 'round'
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this.context.arc(Math.abs(pos.x * -this.scale), Math.abs(pos.y * this.scale), 5, 0, 2 * Math.PI, false)
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this.context.strokeStyle = client.theme.active.background
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this.context.stroke()
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this.context.closePath()
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this.context.beginPath()
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this.context.lineWidth = 3
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this.context.lineCap = 'round'
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this.context.arc(Math.abs(pos.x * -this.scale), Math.abs(pos.y * this.scale), clamp(radius, 5, 100), 0, 2 * Math.PI, false)
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this.context.strokeStyle = client.theme.active.f_med
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this.context.stroke()
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this.context.closePath()
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this.context.restore()
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}
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this.drawRender = function (render) {
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this.context.drawImage(render, 0, 0, this.el.width, this.el.height)
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}
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function printSize (size) { return `${size.width}x${size.height}` }
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function sizeOffset (a, b) { return { width: a.width - b.width, height: a.height - b.height } }
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function clamp (v, min, max) { return v < min ? min : v > max ? max : v }
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}
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