fix: run preFrame when addSprite at ac-canvas.ts

Author: caohongz

packages/av-canvas/src/av-canvas.ts

@@ -340,6 +340,7 @@ export class AVCanvas {
       this.#sprMapAudioNode.set(vs, audioNode);
     }
     await this.#spriteManager.addSprite(vs);
+    vs.preFrame(0);
   };
   /**
    * 删除 {@link VisibleSprite}

packages/av-canvas/src/sprites/sprite-manager.ts

@@ -29,12 +29,10 @@ export class SpriteManager {
 
   async addSprite(vs: VisibleSprite): Promise<void> {
     await vs.ready;
-    vs.preFrame(0);
     this.#sprites.push(vs);
     this.#sprites = this.#sprites.sort((a, b) => a.zIndex - b.zIndex);
     vs.on('propsChange', (props) => {
       if (props.zIndex == null) return;
-      vs.preFrame(0);
       this.#sprites = this.#sprites.sort((a, b) => a.zIndex - b.zIndex);
     });
 

packages/av-cliper/src/sprite/visible-sprite.ts

@@ -71,7 +71,9 @@ export class VisibleSprite extends BaseSprite {
    * 提前准备指定 time 的帧
    */
   preFrame(time: number) {
+    if (this.#lastTime === time) return;
     this.#update(time);
+    this.#lastTime = time;
   }
 
   #lastTime = -1;