kdtreeleafnode.cpp

dysii是一款非常出色的滤波函数库

#include "KDTreeLeafNode.hpp"

#include <set>

using namespace indii::ml::aux;

KDTreeLeafNode::KDTreeLeafNode() : x(0), w(0.0) {
  //
}

KDTreeLeafNode::KDTreeLeafNode(const vector& x, const double w) : x(x),
    w(w) {
  /* pre-condition */
  assert (w > 0.0);
  
  //
}

KDTreeLeafNode::~KDTreeLeafNode() {
  //
}

double KDTreeLeafNode::getWeight() {
  return w;
}

vector& KDTreeLeafNode::getLower() {
  return x;
}

vector& KDTreeLeafNode::getUpper() {
  return x;
}

vector KDTreeLeafNode::nearestTo(const vector& x) {
  /* pre-condition */
  assert (x.size() == this->x.size());

  return this->x;
}

double KDTreeLeafNode::densityAt(const vector& x, Norm& N, Kernel& K) {
  return w * K(N(x - this->x));
}

vector KDTreeLeafNode::sample(const double u, Norm& N, Kernel& K) {
  /* pre-condition */
  assert (u >= 0.0 && u <= getWeight());
  
  return x + K.sample() * N.sample(x.size());
}