268 lines
8.9 KiB
JavaScript
268 lines
8.9 KiB
JavaScript
'use strict'
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function Renderer (dotgrid) {
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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 = 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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dotgrid.manager.update()
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let 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 = dotgrid.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.drawRulers()
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this.drawGrid()
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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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dotgrid.interface.update(true)
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}
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this.resize = function (size) {
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const pad = 15
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this.el.width = (size.width + pad) * this.scale
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this.el.height = (size.height + pad) * this.scale
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this.el.style.width = (size.width + pad) + 'px'
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this.el.style.height = (size.height + pad) + 'px'
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this.update()
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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 (dotgrid.tool.style().mirror_style === 0 && dotgrid.tool.settings.crest === false) { return }
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const middle = { x: dotgrid.tool.settings.size.width + 15, y: dotgrid.tool.settings.size.height + 15 }
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if (dotgrid.tool.style().mirror_style === 1 || dotgrid.tool.style().mirror_style === 3 || dotgrid.tool.settings.crest === true) {
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this.drawRule({ x: middle.x, y: 15 * this.scale }, { x: middle.x, y: (dotgrid.tool.settings.size.height) * this.scale })
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}
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if (dotgrid.tool.style().mirror_style === 2 || dotgrid.tool.style().mirror_style === 3 || dotgrid.tool.settings.crest === true) {
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this.drawRule({ x: 15 * this.scale, y: middle.y }, { x: (dotgrid.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 dotgrid.tool.layer()) {
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const segment = dotgrid.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 dotgrid.tool.vertices) {
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this.drawVertex(dotgrid.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 cursor = { x: parseInt(dotgrid.cursor.pos.x / 15), y: parseInt(dotgrid.cursor.pos.y / 15) }
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const markers = dotgrid.getSize().markers
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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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let is_step = x % 4 == 0 && y % 4 == 0
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// Color
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let color = is_step ? dotgrid.theme.active.b_med : dotgrid.theme.active.b_low
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if ((y == 0 || y == markers.h) && cursor.x == x + 1) { color = dotgrid.theme.active.b_high } else if ((x == 0 || x == markers.w - 1) && cursor.y == y + 1) { color = dotgrid.theme.active.b_high } else if (cursor.x == x + 1 && cursor.y == y + 1) { color = dotgrid.theme.active.b_high }
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this.drawMarker({
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x: parseInt(x * 15) + 15,
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y: parseInt(y * 15) + 15
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}, is_step ? 2.5 : 1.5, color)
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}
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}
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}
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this.drawRulers = function () {
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if (!dotgrid.cursor.translation) { return }
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const pos = dotgrid.cursor.translation.to
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const bottom = (dotgrid.tool.settings.size.height * this.scale)
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const right = (dotgrid.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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let operation = dotgrid.cursor.operation && dotgrid.cursor.operation.cast ? dotgrid.cursor.operation.cast : null
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if (!dotgrid.tool.canCast(operation)) { return }
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if (operation == 'close') { return }
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let path = new Generator([{ vertices: dotgrid.tool.vertices, type: operation }]).toString({ x: 0, y: 0 }, 2)
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let style = {
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color: dotgrid.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.drawMarker = function (pos, radius = 1, color) {
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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 = color
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this.context.fill()
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this.context.closePath()
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}
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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 = dotgrid.theme.active.f_med
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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 = dotgrid.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.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), radius + 3, 0, 2 * Math.PI, false)
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this.context.fillStyle = dotgrid.theme.active.f_high
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this.context.fill()
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this.context.strokeStyle = dotgrid.theme.active.f_high
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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.arc((pos.x * this.scale), (pos.y * this.scale), radius, 0, 2 * Math.PI, false)
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this.context.fillStyle = dotgrid.theme.active.f_low
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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 = dotgrid.theme.active.f_high
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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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let 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 (!dotgrid.cursor.translation) { return }
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this.context.save()
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this.context.beginPath()
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this.context.moveTo((dotgrid.cursor.translation.from.x * this.scale), (dotgrid.cursor.translation.from.y * this.scale))
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this.context.lineTo((dotgrid.cursor.translation.to.x * this.scale), (dotgrid.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 = dotgrid.cursor.translation.multi === true ? dotgrid.theme.active.b_inv : dotgrid.cursor.translation.copy === true ? dotgrid.theme.active.f_med : dotgrid.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 = dotgrid.cursor.pos, radius = dotgrid.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 = dotgrid.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 = dotgrid.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 isEqual (a, b) { return a && b && Math.abs(a.x) == Math.abs(b.x) && Math.abs(a.y) == Math.abs(b.y) }
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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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