@tldraw/editor/dist-esm/lib/editor/derivations/notVisibleShapes.mjs.map

tldraw infinite canvas SDK (editor).

{
  "version": 3,
  "sources": ["../../../../src/lib/editor/derivations/notVisibleShapes.ts"],
  "sourcesContent": ["import { computed, isUninitialized } from '@tldraw/state'\nimport { TLShapeId } from '@tldraw/tlschema'\nimport { Editor } from '../Editor'\n\nfunction fromScratch(editor: Editor): Set<TLShapeId> {\n\tconst shapesIds = editor.getCurrentPageShapeIds()\n\tconst viewportPageBounds = editor.getViewportPageBounds()\n\tconst notVisibleShapes = new Set<TLShapeId>()\n\tshapesIds.forEach((id) => {\n\t\t// If the shape is fully outside of the viewport page bounds, add it to the set.\n\t\t// We'll ignore masks here, since they're more expensive to compute and the overhead is not worth it.\n\t\tconst pageBounds = editor.getShapePageBounds(id)\n\t\tif (pageBounds === undefined || !viewportPageBounds.includes(pageBounds)) {\n\t\t\tnotVisibleShapes.add(id)\n\t\t}\n\t})\n\treturn notVisibleShapes\n}\n\n/**\n * Incremental derivation of not visible shapes.\n * Non visible shapes are shapes outside of the viewport page bounds.\n *\n * @param editor - Instance of the tldraw Editor.\n * @returns Incremental derivation of non visible shapes.\n */\nexport function notVisibleShapes(editor: Editor) {\n\treturn computed<Set<TLShapeId>>('notVisibleShapes', function updateNotVisibleShapes(prevValue) {\n\t\tconst nextValue = fromScratch(editor)\n\n\t\tif (isUninitialized(prevValue)) {\n\t\t\treturn nextValue\n\t\t}\n\n\t\t// If there are more or less shapes, we know there's a change\n\t\tif (prevValue.size !== nextValue.size) return nextValue\n\n\t\t// If any of the old shapes are not in the new set, we know there's a change\n\t\tfor (const prev of prevValue) {\n\t\t\tif (!nextValue.has(prev)) {\n\t\t\t\treturn nextValue\n\t\t\t}\n\t\t}\n\n\t\t// If we've made it here, we know that the set is the same\n\t\treturn prevValue\n\t})\n}\n"],
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  "names": ["notVisibleShapes"]
}