djledda/somaesque-native
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added old backtrack algo

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This commit is contained in:
Daniel Ledda
2022-11-19 15:57:19 +01:00
parent 0b7b6059c1
commit 7b3aa9c871
1 changed files with 30 additions and 6 deletions
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36
main.cpp
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@@ -1,9 +1,11 @@
#include <bitset>
#include <iostream> #include <iostream>
#include <string> #include <string>
#include <algorithm>
#include <vector> #include <vector>
#include "VoxelSpace.h" #include "VoxelSpace.h"
auto backtrack_solve(std::vector<uint64_t> *polycube_input, std::vector<int> *offsets)-> void { auto backtrack_solve_iter(std::vector<uint64_t> *polycube_input, std::vector<int> *offsets)-> void {
auto num_inputs = offsets->size() - 1; auto num_inputs = offsets->size() - 1;
auto solns = std::vector<int>(); auto solns = std::vector<int>();
@@ -51,6 +53,25 @@ auto backtrack_solve(std::vector<uint64_t> *polycube_input, std::vector<int> *of
std::cout << "Done. Found " << solns.size() << " solutions." << std::endl; std::cout << "Done. Found " << solns.size() << " solutions." << std::endl;
} }
auto backtrack_solve(std::vector<uint64_t> *polycube_input, std::vector<int> *offsets, uint64_t working_solution = 0ull, int set = 0) -> int {
auto solns = 0;
auto start = offsets->at(set);
auto end = offsets->at(set + 1);
std::cout << start << " " << end << "\n";
for (int i = start; i < end; i++) {
auto successful_fuse = (working_solution | polycube_input->at(i)) == (working_solution ^ polycube_input->at(i));
if (successful_fuse) {
working_solution = working_solution | polycube_input->at(i);
if (set == offsets->size() - 2) {
return solns + 1;
} else {
solns += backtrack_solve(polycube_input, offsets, working_solution, set + 1);
}
}
}
return solns;
}
auto get_dims_input(int dims[3]) -> void { auto get_dims_input(int dims[3]) -> void {
std::cout << "Enter dimensions separated by newlines. (x*y*z must not exceed 64)\n"; std::cout << "Enter dimensions separated by newlines. (x*y*z must not exceed 64)\n";
auto success = false; auto success = false;
@@ -109,8 +130,8 @@ auto get_reprs_input(int units_required) -> std::vector<uint64_t> {
} }
auto main() -> int { auto main() -> int {
int dims[3] = {}; int dims[3] = { 3, 3, 3 };
get_dims_input(dims); //get_dims_input(dims);
std::cout << '\n'; std::cout << '\n';
//auto reprs = get_reprs_input(dims[0]*dims[1]*dims[2]); //auto reprs = get_reprs_input(dims[0]*dims[1]*dims[2]);
auto reprs = std::vector<uint64_t>{ auto reprs = std::vector<uint64_t>{
@@ -137,7 +158,6 @@ auto main() -> int {
auto space = model_space; auto space = model_space;
space.space = reprs[0]; space.space = reprs[0];
Voxel::cullEmptySpace(&space); Voxel::cullEmptySpace(&space);
std::cout << space.dims[0] << space.dims[1] << space.dims[2] << std::endl;
auto positions = Voxel::getUniqueRotations(&space); auto positions = Voxel::getUniqueRotations(&space);
polycubes.insert(polycubes.end(), positions.begin(), positions.end()); polycubes.insert(polycubes.end(), positions.begin(), positions.end());
@@ -146,13 +166,17 @@ auto main() -> int {
auto space = model_space; auto space = model_space;
space.space = reprs[i]; space.space = reprs[i];
Voxel::cullEmptySpace(&space); Voxel::cullEmptySpace(&space);
std::cout << space.dims[0] << space.dims[1] << space.dims[2] << std::endl;
auto perms = Voxel::getUniqueRotations(&space); auto perms = Voxel::getUniqueRotations(&space);
polycubes.insert(polycubes.end(), perms.begin(), perms.end()); polycubes.insert(polycubes.end(), perms.begin(), perms.end());
} }
offsets.push_back(polycubes.size()); offsets.push_back(polycubes.size());
//backtrack_solve(&polycubes, &offsets); auto spaces = std::vector<uint64_t>(polycubes.size());
std::transform(polycubes.begin(), polycubes.end(), spaces.begin(), [](auto i) { return i.space; });
auto solns = backtrack_solve(&spaces, &offsets);
std::cout << solns << std::endl;
return 0; return 0;
} }