PositionSensorVRDevice: getState() method

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Phương thức getState() của giao diện PositionSensorVRDevice trả về trạng thái hiện tại của cảm biến vị trí cho frame hiện tại (ví dụ, trong callback window.requestAnimationFrame hiện tại) hoặc cho frame trước, được chứa trong đối tượng VRPose. Đây là phương thức bạn thường muốn sử dụng thay vì PositionSensorVRDevice.getImmediateState.

Cú pháp

getState()

function setView() {
  const posState = gPositionSensor.getState();
  if (posState.hasPosition) {
    posPara.textContent = `Position: x${roundToTwo(
      posState.position.x,
    )} y${roundToTwo(posState.position.y)} z${roundToTwo(posState.position.z)}`;
    xPos = -posState.position.x * WIDTH * 2;
    yPos = posState.position.y * HEIGHT * 2;
    zPos = -posState.position.z > 0.01 ? -posState.position.z : 0.01;
  }

  if (posState.hasOrientation) {
    orientPara.textContent = `Orientation: x${roundToTwo(
      posState.orientation.x,
    )} y${roundToTwo(posState.orientation.y)} z${roundToTwo(
      posState.orientation.z,
    )}`;
    xOrient = posState.orientation.x * WIDTH;
    yOrient = -posState.orientation.y * HEIGHT * 2;
    zOrient = posState.orientation.z * 180;
  }
}