react-native-filament/lib/module/hooks/useCameraManipulator.js

A real-time physically based 3D rendering engine for React Native

"use strict";

import { useFilamentContext } from './useFilamentContext';
import { useDisposableResource } from './useDisposableResource';
const cameraPosition = [0, 0, 8];
const cameraTarget = [0, 0, 0];
const cameraUp = [0, 1, 0];
export function useCameraManipulator({
  orbitHomePosition = cameraPosition,
  targetPosition = cameraTarget,
  upVector = cameraUp,
  ...config
}) {
  const {
    engine
  } = useFilamentContext();
  const orbitHomePositionX = orbitHomePosition[0];
  const orbitHomePositionY = orbitHomePosition[1];
  const orbitHomePositionZ = orbitHomePosition[2];
  const targetPositionX = targetPosition[0];
  const targetPositionY = targetPosition[1];
  const targetPositionZ = targetPosition[2];
  const upVectorX = upVector[0];
  const upVectorY = upVector[1];
  const upVectorZ = upVector[2];
  const zoomSpeed = config.zoomSpeed?.[0];
  const orbitSpeedX = config.orbitSpeed?.[0];
  const orbitSpeedY = config.orbitSpeed?.[1];
  const cameraManipulator = useDisposableResource(() => {
    const localConfig = {
      orbitHomePosition: [orbitHomePositionX, orbitHomePositionY, orbitHomePositionZ],
      targetPosition: [targetPositionX, targetPositionY, targetPositionZ],
      upVector: [upVectorX, upVectorY, upVectorZ]
    };
    if (zoomSpeed != null) {
      localConfig.zoomSpeed = [zoomSpeed];
    }
    if (orbitSpeedX != null && orbitSpeedY != null) {
      localConfig.orbitSpeed = [orbitSpeedX, orbitSpeedY];
    }
    return Promise.resolve(engine.createOrbitCameraManipulator(localConfig));
  }, [engine, orbitHomePositionX, orbitHomePositionY, orbitHomePositionZ, orbitSpeedX, orbitSpeedY, targetPositionX, targetPositionY, targetPositionZ, upVectorX, upVectorY, upVectorZ, zoomSpeed]);
  return cameraManipulator;
}
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