@inweb/viewer-visualize/src/Viewer/Components/ResetComponent.ts

JavaScript library for rendering CAD and BIM files in a browser using VisualizeJS

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//
//   This application incorporates Open Design Alliance software pursuant to a
//   license agreement with Open Design Alliance.
//   Open Design Alliance Copyright (C) 2002-2025 by Open Design Alliance.
//   All rights reserved.
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///////////////////////////////////////////////////////////////////////////////

// ===================== AI-CODE-FILE ======================
// Source: Claude Sonnet 4
// Date: 2025-09-10
// Reviewer: vitaly.ivanov@opendesign.com
// Issue: CLOUD-5835
// Notes: Originally AI-generated, modified manually 2025-09-11
// =========================================================

import { IComponent, IOrthogonalCamera, IPoint } from "@inweb/viewer-core";
import type { Viewer } from "../Viewer";

export class ResetComponent implements IComponent {
  private viewer: Viewer;
  private savedCameraSettings: IOrthogonalCamera | null = null;

  constructor(viewer: Viewer) {
    this.viewer = viewer;
    this.viewer.addEventListener("databasechunk", this.onDatabaseChunk);
    this.viewer.on("resetview", this.resetCameraPosition);
  }

  dispose() {
    this.viewer.off("resetview", this.resetCameraPosition);
    this.viewer.removeEventListener("databasechunk", this.onDatabaseChunk);
  }

  onDatabaseChunk = () => {
    if (!this.viewer.visualizeJs) return;

    this.savedCameraSettings = this.getOrthogonalCameraSettings();
  };

  resetCameraPosition() {
    if (this.savedCameraSettings && this.viewer.visualizeJs) {
      this.setOrthogonalCameraSettings(this.savedCameraSettings);
    }
  }

  getOrthogonalCameraSettings(): IOrthogonalCamera {
    const visViewer = this.viewer.visViewer();
    const activeView = visViewer.activeView;

    return {
      view_point: this.getPoint3dFromArray(activeView.viewPosition),
      direction: this.getPoint3dFromArray(activeView.viewTarget),
      up_vector: this.getPoint3dFromArray(activeView.upVector),
      field_width: activeView.viewFieldWidth,
      field_height: activeView.viewFieldHeight,
      view_to_world_scale: 1,
    };
  }

  setOrthogonalCameraSettings(settings: IOrthogonalCamera) {
    const visViewer = this.viewer.visViewer();
    const activeView = visViewer.activeView;

    if (settings) {
      activeView.setView(
        this.getLogicalPoint3dAsArray(settings.view_point),
        this.getLogicalPoint3dAsArray(settings.direction),
        this.getLogicalPoint3dAsArray(settings.up_vector),
        settings.field_width,
        settings.field_height,
        true
      );
    }
  }

  getPoint3dFromArray(array: number[]) {
    return { x: array[0], y: array[1], z: array[2] };
  }

  getLogicalPoint3dAsArray(point3d: IPoint) {
    return [point3d.x, point3d.y, point3d.z];
  }
}