Files
bim_engine/docs/引擎API对接.md
yuding b96e5f3262 refactor: slim down EngineManager from 861 to 290 lines by removing passthrough proxy pattern
- EngineManager now only exposes public SDK API (initialize, loadModel, pause/resumeRendering, getEngineComponent, destroy)
- Internal managers access Engine component directly via this.engineComponent getter on BaseManager
- Non-manager components use registry.engine3d.getEngineComponent() for direct Engine access
- Replaced getEngine() with onRawEvent()/offRawEvent() for raw engine event access
- Migrated 62 call sites across 13 files (9 managers, 1 panel, 3 toolbar buttons)
- Updated all architecture docs, API docs, and README to reflect new patterns
2026-03-05 11:15:57 +08:00

4.1 KiB
Raw Blame History

Engine API 对接指南2026-03

本文档说明 SDK 层与底层 iflow-engine-base 的最新对接方式。

核心原则

  1. Engine 组件是底层能力封装层(状态管理 + 参数转换 + 底层调用)
  2. EngineManager 只保留少量对外公共 API不再做全量透传
  3. 内部 Manager 直接通过 this.engineComponentEngine
  4. 非 Manager 组件通过 registry.engine3d?.getEngineComponent()Engine
  5. 不暴露 raw engine 实例,事件订阅走 onRawEvent/offRawEvent

对接层级

L1 UI 层Button/Panel/Dialog
  -> L2 Manager 层(业务编排)
  -> L3 Engine 组件(统一封装)
  -> L4 iflow-engine-base底层能力

A. 对外 APIEngineManager

对外稳定入口:bimEngine.engine

interface EngineManagerPublicApi {
  initialize(options?: Omit<EngineOptions, 'container'>): boolean;
  isInitialized(): boolean;
  loadModel(urls: string[], options?: ModelLoadOptions): void;
  pauseRendering(): void;
  resumeRendering(): void;
  getEngineComponent(): Engine | null;
  destroy(): void;
}

EngineManager 内部仍负责:

  • 创建 Engine 实例
  • 创建并持有 RightKeyManager
  • 组装右键菜单逻辑

B. 内部 Manager 对接(推荐)

BaseManager 已提供:

protected get engineComponent(): Engine | null;

示例:剖切盒

this.engineComponent?.activeSection('box');
this.engineComponent?.setSectionBoxRange(range);
this.engineComponent?.deactivateSection();

示例:漫游

this.engineComponent?.activateFirstPersonMode();
this.engineComponent?.setWalkSpeed(speed);
this.engineComponent?.deactivateFirstPersonMode();

C. 非 Manager 组件对接

适用于 toolbar 按钮、独立组件(如 WalkPathPanel

registry.engine3d?.getEngineComponent()?.CameraGoHome();
registry.engine3d?.getEngineComponent()?.activateZoomBox();
registry.engine3d?.getEngineComponent()?.toggleMiniMap();

D. 原始事件对接(替代 getEngine

Engine.getEngine() 已删除,改为事件桥接:

engineComponent?.onRawEvent('measure-changed', handler);
engineComponent?.offRawEvent('measure-changed', handler);

适用场景:

  • 测量回调(measure-changed / measure-click
  • 剖切盒拖动回调(section-move

E. 新功能对接步骤(最新模板)

Step 1: 在 Engine 组件实现能力

文件:src/components/engine/index.ts

public activateXx(): void {
  if (!this._isInitialized || !this.engine?.xxModule) return;
  this.engine.xxModule.active();
}

public deactivateXx(): void {
  if (!this._isInitialized || !this.engine?.xxModule) return;
  this.engine.xxModule.disActive();
}

Step 2: 在 Manager 中调用(不要新增 EngineManager 透传)

文件:src/managers/xx-dialog-manager.ts

protected onDialogCreated(): void {
  this.engineComponent?.activateXx();
}

protected onBeforeDestroy(): void {
  this.engineComponent?.deactivateXx();
}

Step 3: 若是非 Manager 组件,走 getEngineComponent

registry.engine3d?.getEngineComponent()?.activateXx();

Step 4: 仅当需要“对外 SDK 公共 API”时再考虑给 EngineManager 增加方法

判定标准:

  • 该能力是否需要 bimEngine.engine?.xxx() 供外部用户直接调用
  • 若仅为内部链路使用,不应在 EngineManager 再包一层

F. 常见反模式

  • EngineManager 里新增大批 this.engineInstance?.xxx() 透传
  • 内部 Manager 继续写 this.registry.engine3d?.xxx()
  • 通过 Engine.getEngine() 暴露 raw engine

对应正确方式:

  • 内部 Manager 使用 this.engineComponent?.xxx()
  • 非 Manager 使用 registry.engine3d?.getEngineComponent()?.xxx()
  • 原始事件使用 onRawEvent/offRawEvent

G. 验收清单

重构或新增功能后,至少检查:

  1. EngineManager 是否只保留必要公共 API
  2. Manager 层是否统一走 engineComponent
  3. 是否无 getEngine() 调用
  4. 事件订阅是否成对 onRawEvent/offRawEvent
  5. npm run build 是否通过