Inicia integrar Anzograph

src/renderer.ts

@@ -83,6 +83,7 @@ export class Renderer {
   private nodeCount = 0;
   private edgeCount = 0;
   private neighborMap: Map<number, number[]> = new Map();
+  private sortedToVertexId: Uint32Array = new Uint32Array(0);
   private leafEdgeStarts: Uint32Array = new Uint32Array(0);
   private leafEdgeCounts: Uint32Array = new Uint32Array(0);
   private maxPtSize = 256;
@@ -213,6 +214,12 @@ export class Renderer {
     gl.bufferData(gl.ARRAY_BUFFER, sorted, gl.STATIC_DRAW);
     gl.bindVertexArray(null);
 
+    // Build sorted index → vertex ID mapping for hover lookups
+    this.sortedToVertexId = new Uint32Array(count);
+    for (let i = 0; i < count; i++) {
+      this.sortedToVertexId[i] = vertexIds[order[i]];
+    }
+
     // Build vertex ID → original input index mapping
     const vertexIdToOriginal = new Map<number, number>();
     for (let i = 0; i < count; i++) {
@@ -331,6 +338,15 @@ export class Renderer {
     return this.nodeCount;
   }
 
+  /**
+   * Get the original vertex ID for a given sorted index.
+   * Useful for looking up URI labels from the URI map.
+   */
+  getVertexId(sortedIndex: number): number | undefined {
+    if (sortedIndex < 0 || sortedIndex >= this.sortedToVertexId.length) return undefined;
+    return this.sortedToVertexId[sortedIndex];
+  }
+
   /**
    * Convert screen coordinates (CSS pixels) to world coordinates.
    */