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57 lines
1.3 KiB
C++
57 lines
1.3 KiB
C++
#ifndef HEADER_VOXEL_UTILITY_H
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#define HEADER_VOXEL_UTILITY_H
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#include "vector3i.h"
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#include <core/pool_vector.h>
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#include <core/ustring.h>
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#include <core/vector.h>
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#include <vector>
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// Takes elements starting from a given position and moves them at the beginning,
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// then shrink the array to fit them. Other elements are discarded.
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template <typename T>
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void shift_up(Vector<T> &v, int pos) {
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int j = 0;
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for (int i = pos; i < v.size(); ++i, ++j) {
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v.write[j] = v[i];
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}
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int remaining = v.size() - pos;
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v.resize(remaining);
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}
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// Pops the last element of the vector and place it at the given position.
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// (The element that was at this position is the one removed).
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template <typename T>
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void unordered_remove(Vector<T> &v, int pos) {
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int last = v.size() - 1;
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v.write[pos] = v[last];
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v.resize(last);
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}
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template <typename T>
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void copy_to(PoolVector<T> &to, const Vector<T> &from) {
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to.resize(from.size());
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typename PoolVector<T>::Write w = to.write();
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for (unsigned int i = 0; i < from.size(); ++i) {
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w[i] = from[i];
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}
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}
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inline String ptr2s(const void *p) {
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return String::num_uint64((uint64_t)p, 16);
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}
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template <typename T>
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void raw_copy_to(PoolVector<T> &to, const std::vector<T> &from) {
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to.resize(from.size());
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typename PoolVector<T>::Write w = to.write();
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memcpy(w.ptr(), from.data(), from.size() * sizeof(T));
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}
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#endif // HEADER_VOXEL_UTILITY_H
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