Method zoomToFit

ui/src/components/pixi/PixiRenderer.ts:2248–2284

(duration = 300)

  }

  zoomToFit(duration = 300): void {
    if (this.nodes.size === 0) return;
    const positions = Array.from(this.nodes.values())
      .filter((n) => n.visible)
      .map((n) =>
        this.mode3d
          ? { x: n.sprite.position.x, y: n.sprite.position.y }
          : { x: n.x, y: n.y },
      );
    if (positions.length === 0) return;
    const bounds = computeBounds(positions);
    const target = fitBounds(bounds, this.width, this.height);

    // Hand the camera off from any in-progress auto-fit follower to
    // this explicit one-shot animation (Fix #9).
    this.autoFitTarget = null;

    if (duration <= 0) {
      this.vp = target;
      this.applyCounterScale();
      return;
    }

    this.cancelAnimation?.();
    this.cancelAnimation = animateViewport(
      this.vp,
      target,
      duration,
      (vp) => {
        this.vp = vp;
      },
      () => {
        this.redrawAllEdges();
        this.cancelAnimation = null;
      },
    );
  }

  /**
   * Continuous easing auto-fit — refreshes the follower's target from live