perf: remove rBush logic from element picking mechanism

.changeset/metal-kiwis-nail.md

@@ -0,0 +1,6 @@
+---
+'@antv/g-plugin-canvas-picker': minor
+'@antv/g-lite': minor
+---
+
+perf: remove rBush logic from element picking mechanism

__tests__/demos/_helper/example-layout-manager.ts

@@ -0,0 +1,55 @@
+/**
+ * Layout manager for arranging examples in a grid
+ */
+export class ExampleLayoutManager {
+  private regionWidth: number;
+  private regionHeight: number;
+  private padding: number;
+  private columns: number;
+  private currentIndex: number;
+
+  constructor(
+    regionWidth: number = 200,
+    regionHeight: number = 150,
+    padding: number = 30,
+    columns: number = 3,
+  ) {
+    this.regionWidth = regionWidth;
+    this.regionHeight = regionHeight;
+    this.padding = padding;
+    this.columns = columns;
+    this.currentIndex = 0;
+  }
+
+  /**
+   * Get the next position for an example
+   * @returns Object containing x and y coordinates
+   */
+  getNextPosition(): { x: number; y: number } {
+    const row = Math.floor(this.currentIndex / this.columns);
+    const col = this.currentIndex % this.columns;
+    this.currentIndex++;
+
+    return {
+      x: this.padding + col * (this.regionWidth + this.padding),
+      y: this.padding + row * (this.regionHeight + this.padding),
+    };
+  }
+
+  /**
+   * Reset the index to start from the beginning
+   */
+  reset(): void {
+    this.currentIndex = 0;
+  }
+
+  /**
+   * Get region dimensions
+   */
+  getRegionDimensions(): { width: number; height: number } {
+    return {
+      width: this.regionWidth,
+      height: this.regionHeight,
+    };
+  }
+}