@tldraw/editor/dist-esm/lib/editor/managers/ScribbleManager/ScribbleManager.mjs.map

tldraw infinite canvas SDK (editor).

{
  "version": 3,
  "sources": ["../../../../../src/lib/editor/managers/ScribbleManager/ScribbleManager.ts"],
  "sourcesContent": ["import { TLScribble, VecModel } from '@tldraw/tlschema'\nimport { uniqueId } from '@tldraw/utils'\nimport { Vec } from '../../../primitives/Vec'\nimport { Editor } from '../../Editor'\n\n/** @public */\nexport interface ScribbleItem {\n\tid: string\n\tscribble: TLScribble\n\ttimeoutMs: number\n\tdelayRemaining: number\n\tprev: null | VecModel\n\tnext: null | VecModel\n}\n\n/** @public */\nexport class ScribbleManager {\n\tscribbleItems = new Map<string, ScribbleItem>()\n\tstate = 'paused' as 'paused' | 'running'\n\n\tconstructor(private editor: Editor) {}\n\n\taddScribble(scribble: Partial<TLScribble>, id = uniqueId()) {\n\t\tconst item: ScribbleItem = {\n\t\t\tid,\n\t\t\tscribble: {\n\t\t\t\tid,\n\t\t\t\tsize: 20,\n\t\t\t\tcolor: 'accent',\n\t\t\t\topacity: 0.8,\n\t\t\t\tdelay: 0,\n\t\t\t\tpoints: [],\n\t\t\t\tshrink: 0.1,\n\t\t\t\ttaper: true,\n\t\t\t\t...scribble,\n\t\t\t\tstate: 'starting',\n\t\t\t},\n\t\t\ttimeoutMs: 0,\n\t\t\tdelayRemaining: scribble.delay ?? 0,\n\t\t\tprev: null,\n\t\t\tnext: null,\n\t\t}\n\t\tthis.scribbleItems.set(id, item)\n\t\treturn item\n\t}\n\n\treset() {\n\t\tthis.editor.updateInstanceState({ scribbles: [] })\n\t\tthis.scribbleItems.clear()\n\t}\n\n\t/**\n\t * Start stopping the scribble. The scribble won't be removed until its last point is cleared.\n\t *\n\t * @public\n\t */\n\tstop(id: ScribbleItem['id']) {\n\t\tconst item = this.scribbleItems.get(id)\n\t\tif (!item) throw Error(`Scribble with id ${id} not found`)\n\t\titem.delayRemaining = Math.min(item.delayRemaining, 200)\n\t\titem.scribble.state = 'stopping'\n\t\treturn item\n\t}\n\n\t/**\n\t * Set the scribble's next point.\n\t *\n\t * @param id - The id of the scribble to add a point to.\n\t * @param x - The x coordinate of the point.\n\t * @param y - The y coordinate of the point.\n\t * @param z - The z coordinate of the point.\n\t * @public\n\t */\n\taddPoint(id: ScribbleItem['id'], x: number, y: number, z = 0.5) {\n\t\tconst item = this.scribbleItems.get(id)\n\t\tif (!item) throw Error(`Scribble with id ${id} not found`)\n\t\tconst { prev } = item\n\t\tconst point = { x, y, z }\n\t\tif (!prev || Vec.Dist(prev, point) >= 1) {\n\t\t\titem.next = point\n\t\t}\n\t\treturn item\n\t}\n\n\t/**\n\t * Update on each animation frame.\n\t *\n\t * @param elapsed - The number of milliseconds since the last tick.\n\t * @public\n\t */\n\ttick(elapsed: number) {\n\t\tif (this.scribbleItems.size === 0) return\n\t\tthis.editor.run(() => {\n\t\t\tthis.scribbleItems.forEach((item) => {\n\t\t\t\t// let the item get at least eight points before\n\t\t\t\t//  switching from starting to active\n\t\t\t\tif (item.scribble.state === 'starting') {\n\t\t\t\t\tconst { next, prev } = item\n\t\t\t\t\tif (next && next !== prev) {\n\t\t\t\t\t\titem.prev = next\n\t\t\t\t\t\titem.scribble.points.push(next)\n\t\t\t\t\t}\n\n\t\t\t\t\tif (item.scribble.points.length > 8) {\n\t\t\t\t\t\titem.scribble.state = 'active'\n\t\t\t\t\t}\n\t\t\t\t\treturn\n\t\t\t\t}\n\n\t\t\t\tif (item.delayRemaining > 0) {\n\t\t\t\t\titem.delayRemaining = Math.max(0, item.delayRemaining - elapsed)\n\t\t\t\t}\n\n\t\t\t\titem.timeoutMs += elapsed\n\t\t\t\tif (item.timeoutMs >= 16) {\n\t\t\t\t\titem.timeoutMs = 0\n\t\t\t\t}\n\n\t\t\t\tconst { delayRemaining, timeoutMs, prev, next, scribble } = item\n\n\t\t\t\tswitch (scribble.state) {\n\t\t\t\t\tcase 'active': {\n\t\t\t\t\t\tif (next && next !== prev) {\n\t\t\t\t\t\t\titem.prev = next\n\t\t\t\t\t\t\tscribble.points.push(next)\n\n\t\t\t\t\t\t\t// If we've run out of delay, then shrink the scribble from the start\n\t\t\t\t\t\t\tif (delayRemaining === 0) {\n\t\t\t\t\t\t\t\tif (scribble.points.length > 8) {\n\t\t\t\t\t\t\t\t\tscribble.points.shift()\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t// While not moving, shrink the scribble from the start\n\t\t\t\t\t\t\tif (timeoutMs === 0) {\n\t\t\t\t\t\t\t\tif (scribble.points.length > 1) {\n\t\t\t\t\t\t\t\t\tscribble.points.shift()\n\t\t\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t\t\t// Reset the item's delay\n\t\t\t\t\t\t\t\t\titem.delayRemaining = scribble.delay\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t\tbreak\n\t\t\t\t\t}\n\t\t\t\t\tcase 'stopping': {\n\t\t\t\t\t\tif (item.delayRemaining === 0) {\n\t\t\t\t\t\t\tif (timeoutMs === 0) {\n\t\t\t\t\t\t\t\t// If the scribble is down to one point, we're done!\n\t\t\t\t\t\t\t\tif (scribble.points.length === 1) {\n\t\t\t\t\t\t\t\t\tthis.scribbleItems.delete(item.id) // Remove the scribble\n\t\t\t\t\t\t\t\t\treturn\n\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\tif (scribble.shrink) {\n\t\t\t\t\t\t\t\t\t// Drop the scribble's size as it shrinks\n\t\t\t\t\t\t\t\t\tscribble.size = Math.max(1, scribble.size * (1 - scribble.shrink))\n\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t// Drop the scribble's first point (its tail)\n\t\t\t\t\t\t\t\tscribble.points.shift()\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t\tbreak\n\t\t\t\t\t}\n\t\t\t\t\tcase 'paused': {\n\t\t\t\t\t\t// Nothing to do while paused.\n\t\t\t\t\t\tbreak\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t})\n\n\t\t\t// The object here will get frozen into the record, so we need to\n\t\t\t// create a copies of the parts that what we'll be mutating later.\n\t\t\tthis.editor.updateInstanceState({\n\t\t\t\tscribbles: Array.from(this.scribbleItems.values())\n\t\t\t\t\t.map(({ scribble }) => ({\n\t\t\t\t\t\t...scribble,\n\t\t\t\t\t\tpoints: [...scribble.points],\n\t\t\t\t\t}))\n\t\t\t\t\t.slice(-5), // limit to three as a minor sanity check\n\t\t\t})\n\t\t})\n\t}\n}\n"],
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