{
  "version": 3,
  "sources": ["../../../../src/lib/shapes/shared/ScribbleManager.ts"],
  "sourcesContent": ["import { TLScribble, TLTickEvent, Vec2d, Vec2dModel, VecLike } from '@tldraw/editor'\n\n/** @public */\nexport class ScribbleManager implements TLScribble {\n\t// Scribble properties\n\tstate\n\tpoints\n\tsize\n\tcolor\n\topacity\n\tdelay\n\n\ttimeoutMs = 0\n\tdelayRemaining = 0\n\n\t// Callbacks\n\tprivate onUpdate: (scribble: TLScribble) => void\n\tprivate onComplete: () => void\n\n\t// Internal state\n\tprivate prev: VecLike | null = null\n\tprivate next: VecLike | null = null\n\n\tconstructor(opts: {\n\t\tonUpdate: (scribble: TLScribble) => void\n\t\tonComplete: () => void\n\t\tsize?: TLScribble['size']\n\t\tcolor?: TLScribble['color']\n\t\topacity?: TLScribble['opacity']\n\t\tdelay?: TLScribble['delay']\n\t}) {\n\t\tconst { size = 20, color = 'accent', opacity = 0.8, delay = 0, onComplete, onUpdate } = opts\n\n\t\tthis.onUpdate = onUpdate\n\t\tthis.onComplete = onComplete\n\t\tthis.size = size\n\t\tthis.color = color\n\t\tthis.delay = delay\n\t\tthis.opacity = opacity\n\t\tthis.points = [] as Vec2dModel[]\n\t\tthis.state = 'starting' as TLScribble['state']\n\n\t\tthis.prev = null\n\t\tthis.next = null\n\n\t\tthis.delayRemaining = this.delay\n\n\t\tthis.resume()\n\t}\n\n\tresume = () => {\n\t\tthis.state = 'active'\n\t}\n\n\tpause = () => {\n\t\tthis.state = 'starting'\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 = () => {\n\t\tthis.delayRemaining = Math.min(this.delayRemaining, 200)\n\t\tthis.state = 'stopping'\n\t}\n\n\t/**\n\t * Set the scribble's next point.\n\t *\n\t * @param point - The point to add.\n\t * @public\n\t */\n\taddPoint = (x: number, y: number) => {\n\t\tconst { prev } = this\n\t\tconst point = { x, y, z: 0.5 }\n\t\tif (prev && Vec2d.Dist(prev, point) < 1) return\n\t\tthis.next = point\n\t}\n\n\t/**\n\t * Get the current TLScribble object from the scribble manager.\n\t *\n\t * @public\n\t */\n\tgetScribble(): TLScribble {\n\t\treturn {\n\t\t\tstate: this.state,\n\t\t\tsize: this.size,\n\t\t\tcolor: this.color,\n\t\t\topacity: this.opacity,\n\t\t\tdelay: this.delay,\n\t\t\tpoints: [...this.points],\n\t\t}\n\t}\n\n\tprivate updateScribble() {\n\t\tthis.onUpdate(this.getScribble())\n\t}\n\n\ttick: TLTickEvent = (elapsed) => {\n\t\tthis.timeoutMs += elapsed\n\n\t\tif (this.delayRemaining > 0) {\n\t\t\tthis.delayRemaining = Math.max(0, this.delayRemaining - elapsed)\n\t\t}\n\n\t\tif (this.timeoutMs >= 16) {\n\t\t\tthis.timeoutMs = 0\n\t\t}\n\n\t\tconst { timeoutMs, state, prev, next, points } = this\n\n\t\tswitch (state) {\n\t\t\tcase 'active': {\n\t\t\t\tif (next && next !== prev) {\n\t\t\t\t\tthis.prev = next\n\t\t\t\t\tpoints.push(next)\n\n\t\t\t\t\tif (this.delayRemaining === 0) {\n\t\t\t\t\t\tif (points.length > 8) {\n\t\t\t\t\t\t\tpoints.shift()\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\tthis.updateScribble()\n\t\t\t\t} else {\n\t\t\t\t\t// While not moving, shrink the scribble from the start\n\t\t\t\t\tif (timeoutMs === 0) {\n\t\t\t\t\t\tif (points.length > 1) {\n\t\t\t\t\t\t\tpoints.shift()\n\t\t\t\t\t\t\tthis.updateScribble()\n\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\tthis.delayRemaining = this.delay\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\tbreak\n\t\t\t}\n\t\t\tcase 'stopping': {\n\t\t\t\tif (this.delayRemaining === 0) {\n\t\t\t\t\tif (timeoutMs === 0) {\n\t\t\t\t\t\t// If the scribble is down to one point, we're done!\n\t\t\t\t\t\tif (points.length === 1) {\n\t\t\t\t\t\t\tthis.state = 'paused'\n\t\t\t\t\t\t\tthis.onComplete()\n\t\t\t\t\t\t\treturn\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// Drop the scribble's size\n\t\t\t\t\t\tthis.size *= 0.9\n\n\t\t\t\t\t\t// Drop the scribble's first point (its tail)\n\t\t\t\t\t\tpoints.shift()\n\n\t\t\t\t\t\t// otherwise, update the scribble\n\t\t\t\t\t\tthis.updateScribble()\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\tbreak\n\t\t\t}\n\t\t\tcase 'paused': {\n\t\t\t\t// Nothing to do while paused.\n\t\t\t\tbreak\n\t\t\t}\n\t\t}\n\t}\n}\n"],
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