{
  "version": 3,
  "sources": ["../../../../../src/lib/tools/SelectTool/children/Brushing.ts"],
  "sourcesContent": ["import {\n\tBox2d,\n\tHIT_TEST_MARGIN,\n\tMatrix2d,\n\tStateNode,\n\tTLCancelEvent,\n\tTLEventHandlers,\n\tTLFrameShape,\n\tTLGroupShape,\n\tTLInterruptEvent,\n\tTLKeyboardEvent,\n\tTLPageId,\n\tTLPointerEventInfo,\n\tTLShape,\n\tTLShapeId,\n\tVec2d,\n\tpointInPolygon,\n\tpolygonsIntersect,\n} from '@tldraw/editor'\n\nexport class Brushing extends StateNode {\n\tstatic override id = 'brushing'\n\n\tinfo = {} as TLPointerEventInfo & { target: 'canvas' }\n\n\tbrush = new Box2d()\n\tinitialSelectedShapeIds: TLShapeId[] = []\n\texcludedShapeIds = new Set<TLShapeId>()\n\n\t// The shape that the brush started on\n\tinitialStartShape: TLShape | null = null\n\n\toverride onEnter = (info: TLPointerEventInfo & { target: 'canvas' }) => {\n\t\tconst { altKey, currentPagePoint } = this.editor.inputs\n\n\t\tif (altKey) {\n\t\t\tthis.parent.transition('scribble_brushing', info)\n\t\t\treturn\n\t\t}\n\n\t\tthis.excludedShapeIds = new Set(\n\t\t\tthis.editor.currentPageShapes\n\t\t\t\t.filter(\n\t\t\t\t\t(shape) =>\n\t\t\t\t\t\tthis.editor.isShapeOfType<TLGroupShape>(shape, 'group') ||\n\t\t\t\t\t\tthis.editor.isShapeOrAncestorLocked(shape)\n\t\t\t\t)\n\t\t\t\t.map((shape) => shape.id)\n\t\t)\n\n\t\tthis.info = info\n\t\tthis.initialSelectedShapeIds = this.editor.selectedShapeIds.slice()\n\t\tthis.initialStartShape = this.editor.getShapesAtPoint(currentPagePoint)[0]\n\t\tthis.onPointerMove()\n\t}\n\n\toverride onExit = () => {\n\t\tthis.initialSelectedShapeIds = []\n\t\tthis.editor.updateInstanceState({ brush: null })\n\t}\n\n\toverride onPointerMove = () => {\n\t\tthis.hitTestShapes()\n\t}\n\n\toverride onPointerUp: TLEventHandlers['onPointerUp'] = () => {\n\t\tthis.complete()\n\t}\n\n\toverride onComplete: TLEventHandlers['onComplete'] = () => {\n\t\tthis.complete()\n\t}\n\n\toverride onCancel?: TLCancelEvent | undefined = (info) => {\n\t\tthis.editor.setSelectedShapes(this.initialSelectedShapeIds, { squashing: true })\n\t\tthis.parent.transition('idle', info)\n\t}\n\n\toverride onKeyDown: TLEventHandlers['onKeyDown'] = (info) => {\n\t\tif (this.editor.inputs.altKey) {\n\t\t\tthis.parent.transition('scribble_brushing', info)\n\t\t} else {\n\t\t\tthis.hitTestShapes()\n\t\t}\n\t}\n\n\toverride onKeyUp?: TLKeyboardEvent | undefined = () => {\n\t\tthis.hitTestShapes()\n\t}\n\n\tprivate complete() {\n\t\tthis.parent.transition('idle', {})\n\t}\n\n\tprivate hitTestShapes() {\n\t\tconst {\n\t\t\tzoomLevel,\n\t\t\tcurrentPageId,\n\t\t\tcurrentPageShapes: currentPageShapes,\n\t\t\tinputs: { originPagePoint, currentPagePoint, shiftKey, ctrlKey },\n\t\t} = this.editor\n\n\t\t// Set the brush to contain the current and origin points\n\t\tthis.brush.setTo(Box2d.FromPoints([originPagePoint, currentPagePoint]))\n\n\t\t// We'll be collecting shape ids\n\t\tconst results = new Set(shiftKey ? this.initialSelectedShapeIds : [])\n\n\t\tlet A: Vec2d,\n\t\t\tB: Vec2d,\n\t\t\tshape: TLShape,\n\t\t\tpageBounds: Box2d | undefined,\n\t\t\tpageTransform: Matrix2d | undefined,\n\t\t\tlocalCorners: Vec2d[]\n\n\t\t// We'll be testing the corners of the brush against the shapes\n\t\tconst { corners } = this.brush\n\n\t\tconst { excludedShapeIds } = this\n\n\t\ttestAllShapes: for (let i = 0, n = currentPageShapes.length; i < n; i++) {\n\t\t\tshape = currentPageShapes[i]\n\t\t\tif (excludedShapeIds.has(shape.id)) continue testAllShapes\n\t\t\tif (results.has(shape.id)) continue testAllShapes\n\n\t\t\tpageBounds = this.editor.getShapePageBounds(shape)\n\t\t\tif (!pageBounds) continue testAllShapes\n\n\t\t\t// If the brush fully wraps a shape, it's almost certainly a hit\n\t\t\tif (this.brush.contains(pageBounds)) {\n\t\t\t\tthis.handleHit(shape, currentPagePoint, currentPageId, results, corners)\n\t\t\t\tcontinue testAllShapes\n\t\t\t}\n\n\t\t\t// Should we even test for a single segment intersections? Only if\n\t\t\t// we're not holding the ctrl key for alternate selection mode\n\t\t\t// (only wraps count!), or if the shape is a frame.\n\t\t\tif (ctrlKey || this.editor.isShapeOfType<TLFrameShape>(shape, 'frame')) {\n\t\t\t\tcontinue testAllShapes\n\t\t\t}\n\n\t\t\t// If the brush collides the page bounds, then do hit tests against\n\t\t\t// each of the brush's four sides.\n\t\t\tif (this.brush.collides(pageBounds)) {\n\t\t\t\t// Shapes expect to hit test line segments in their own coordinate system,\n\t\t\t\t// so we first need to get the brush corners in the shape's local space.\n\t\t\t\tconst geometry = this.editor.getShapeGeometry(shape)\n\n\t\t\t\tpageTransform = this.editor.getShapePageTransform(shape)\n\n\t\t\t\tif (!pageTransform) {\n\t\t\t\t\tcontinue testAllShapes\n\t\t\t\t}\n\n\t\t\t\t// Check whether any of the the brush edges intersect the shape\n\t\t\t\tlocalCorners = pageTransform.clone().invert().applyToPoints(corners)\n\n\t\t\t\thitTestBrushEdges: for (let i = 0; i < localCorners.length; i++) {\n\t\t\t\t\tA = localCorners[i]\n\t\t\t\t\tB = localCorners[(i + 1) % localCorners.length]\n\n\t\t\t\t\tif (geometry.hitTestLineSegment(A, B, HIT_TEST_MARGIN / zoomLevel)) {\n\t\t\t\t\t\tthis.handleHit(shape, currentPagePoint, currentPageId, results, corners)\n\t\t\t\t\t\tbreak hitTestBrushEdges\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tthis.editor.updateInstanceState({ brush: { ...this.brush.toJson() } })\n\t\tthis.editor.setSelectedShapes(Array.from(results), { squashing: true })\n\t}\n\n\toverride onInterrupt: TLInterruptEvent = () => {\n\t\tthis.editor.updateInstanceState({ brush: null })\n\t}\n\n\tprivate handleHit(\n\t\tshape: TLShape,\n\t\tcurrentPagePoint: Vec2d,\n\t\tcurrentPageId: TLPageId,\n\t\tresults: Set<TLShapeId>,\n\t\tcorners: Vec2d[]\n\t) {\n\t\tif (shape.parentId === currentPageId) {\n\t\t\tresults.add(shape.id)\n\t\t\treturn\n\t\t}\n\n\t\t// Find the outermost selectable shape, check to see if it has a\n\t\t// page mask; and if so, check to see if the brush intersects it\n\t\tconst selectedShape = this.editor.getOutermostSelectableShape(shape)\n\t\tconst pageMask = this.editor.getShapeMask(selectedShape.id)\n\n\t\tif (\n\t\t\tpageMask &&\n\t\t\t!polygonsIntersect(pageMask, corners) &&\n\t\t\t!pointInPolygon(currentPagePoint, pageMask)\n\t\t) {\n\t\t\treturn\n\t\t}\n\n\t\tresults.add(selectedShape.id)\n\t}\n}\n"],
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