@osobh/reactar/src/sensors/EnvironmentalDetection.ts

AR Library for React Native and Expo

// src/sensors/EnvironmentalDetection.ts

export interface Plane {
    id: string;
    center: { x: number; y: number; z: number };
    extent: { width: number; length: number };
  }
  
  export interface Anchor {
    id: string;
    position: { x: number; y: number; z: number };
    rotation: { x: number; y: number; z: number };
    timestamp: number;
    planeId: string;
  }
  
  export class EnvironmentalDetection {
    // Simulate plane detection by returning a dummy plane after a short delay
    detectPlanes(): Promise<Plane[]> {
      return new Promise(resolve => {
        setTimeout(() => {
          resolve([
            {
              id: 'plane-1',
              center: { x: 0, y: 0, z: -1 },
              extent: { width: 1, length: 1 }
            }
          ]);
        }, 500);
      });
    }
  
    // Simulate hit testing by returning the first detected plane
    hitTest(x: number, y: number): Promise<Plane | null> {
      return this.detectPlanes().then(planes => {
        return planes.length > 0 ? planes[0] : null;
      });
    }
  
    // Simulate light estimation by returning dummy ambient intensity and color temperature values
    getLightEstimation(): Promise<{ ambientIntensity: number; ambientColorTemperature: number }> {
      return new Promise(resolve => {
        setTimeout(() => {
          resolve({
            ambientIntensity: 1000,      // e.g., lumens
            ambientColorTemperature: 6500  // in Kelvin
          });
        }, 300);
      });
    }
  
    // Implement anchoring logic: attach a virtual object to a detected plane with an optional offset
    createAnchor(plane: Plane, offset?: { x?: number; y?: number; z?: number }, rotation?: { x?: number; y?: number; z?: number }): Anchor {
      const defaultOffset = { x: 0, y: 0, z: 0 };
      const defaultRotation = { x: 0, y: 0, z: 0 };
      const finalOffset = { ...defaultOffset, ...offset };
      const finalRotation = { ...defaultRotation, ...rotation };
      const position = {
        x: plane.center.x + finalOffset.x,
        y: plane.center.y + finalOffset.y,
        z: plane.center.z + finalOffset.z,
      };
      return {
        id: `anchor-${plane.id}`,
        position,
        rotation: finalRotation,
        timestamp: Date.now(),
        planeId: plane.id
      };
    }
  }