vec3d.hpp

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/*
 * Copyright 2018 Uber Technologies, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#include "QueryEngine/ExtensionFunctions/h3lib/include/vec3d.h"

// #include <math.h>

EXTENSION_INLINE double _square(double x) {
  return x * x;
}

EXTENSION_NOINLINE double _pointSquareDist(const Vec3d(v1), const Vec3d(v2)) {
  return _square(v1[X_INDEX] - v2[X_INDEX]) + _square(v1[Y_INDEX] - v2[Y_INDEX]) +
         _square(v1[Z_INDEX] - v2[Z_INDEX]);
}

EXTENSION_NOINLINE bool _geoToVec3d(const GeoCoord(geo), Vec3d(v)) {
  double r = cos(geo[LAT_INDEX]);

  v[Z_INDEX] = sin(geo[LAT_INDEX]);
  v[X_INDEX] = cos(geo[LON_INDEX]) * r;
  v[Y_INDEX] = sin(geo[LON_INDEX]) * r;

  return true;
}