Function getRotatedToPositionCorners

source/corners.js:98–126

(corners, number, position)

};

export const getRotatedToPositionCorners = (corners, number, position) => {
  const center = getCornersCenter(corners);
  const distances = corners.map((corner) =>
    distanceBetweenVectors(center, corner)
  );
  const angles = corners.map((corner) => angleBetweenVectors(center, corner));

  const oldDistance = distances[number];
  const oldAngle = angles[number];

  const newDistance = distanceBetweenVectors(center, position);
  const newAngle = angleBetweenVectors(center, position);

  const mdistance = newDistance / oldDistance;
  const dangle = newAngle - oldAngle;

  const newDistances = distances.map((distance) => distance * mdistance);
  const newAngles = angles.map((angle) => angle + dangle);

  const rotatedCorners = corners.map((corner, i) => {
    const x = Math.cos(newAngles[i]) * newDistances[i];
    const y = Math.sin(newAngles[i]) * newDistances[i];
    return subtractVector(center, [x, y]);
  });

  //const rotatedCorners = getClonedCorners(corners)
  //rotatedCorners[number] = position
  return rotatedCorners;
};