snapshot of https://github.com/toeverything/AFFiNE.git (canary, 2026-09-16; blobs > 131072B omitted)

blocksuite/affine/blocks/surface/src/utils/rough/fillers/hachure-filler.ts

@@ -0,0 +1,38 @@
+import type { Op, OpSet, ResolvedOptions } from '../core.js';
+import type { Line, Point } from '../geometry.js';
+import type { PatternFiller, RenderHelper } from './filler-interface.js';
+import { polygonHachureLines } from './scan-line-hachure.js';
+
+export class HachureFiller implements PatternFiller {
+  private readonly helper: RenderHelper;
+
+  constructor(helper: RenderHelper) {
+    this.helper = helper;
+  }
+
+  protected _fillPolygons(polygonList: Point[][], o: ResolvedOptions): OpSet {
+    const lines = polygonHachureLines(polygonList, o);
+    const ops = this.renderLines(lines, o);
+    return { type: 'fillSketch', ops };
+  }
+
+  fillPolygons(polygonList: Point[][], o: ResolvedOptions): OpSet {
+    return this._fillPolygons(polygonList, o);
+  }
+
+  protected renderLines(lines: Line[], o: ResolvedOptions): Op[] {
+    const ops: Op[] = [];
+    for (const line of lines) {
+      ops.push(
+        ...this.helper.doubleLineOps(
+          line[0][0],
+          line[0][1],
+          line[1][0],
+          line[1][1],
+          o
+        )
+      );
+    }
+    return ops;
+  }
+}