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508 lines
18 KiB
C++
508 lines
18 KiB
C++
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#include "tiling_wave_form_collapse.h"
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// 0th index is the count
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// Generate the map associating an orientation id to the orientation
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// id obtained when rotating 90° anticlockwise the tile.
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const uint8_t Tile::rotation_map[6][9] = {
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{ 1, 0 }, // SYMMETRY_X
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{ 4, 1, 2, 3, 0 }, // SYMMETRY_T
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{ 2, 1, 0 }, // SYMMETRY_I
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{ 4, 1, 2, 3, 0 }, // SYMMETRY_L
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{ 2, 1, 0 }, // SYMMETRY_BACKSLASH
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{ 8, 1, 2, 3, 0, 5, 6, 7, 4 }, // SYMMETRY_P
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};
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// 0th index is the count
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// Generate the map associating an orientation id to the orientation
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// id obtained when rotating 90° anticlockwise the tile.
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const uint8_t Tile::reflection_map[6][9] = {
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{ 1, 0 }, // SYMMETRY_X
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{ 4, 0, 3, 2, 1 }, // SYMMETRY_T
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{ 2, 0, 1 }, // SYMMETRY_I
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{ 4, 1, 0, 3, 2 }, // SYMMETRY_L
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{ 2, 1, 0 }, // SYMMETRY_BACKSLASH
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{ 8, 4, 7, 6, 5, 0, 3, 2, 1 }, // SYMMETRY_P
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};
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// Generate the map associating an orientation id and an action to the
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// resulting orientation id.
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// Actions 0, 1, 2, and 3 are 0°, 90°, 180°, and 270° anticlockwise rotations.
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// Actions 4, 5, 6, and 7 are actions 0, 1, 2, and 3 preceded by a reflection
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// on the x axis.
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Tile::ActionMap Tile::generate_action_map(const WaveFormCollapse::Symmetry &symmetry) {
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int sindx = static_cast<int>(symmetry);
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int size = rotation_map[sindx][0];
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ActionMap action_map;
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for (int i = 0; i < size; ++i) {
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action_map.map[0].write[i] = i;
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}
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for (int a = 1; a < 4; ++a) {
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for (int i = 0; i < size; ++i) {
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action_map.map[a].write[i] = rotation_map[sindx][action_map.map[a - 1][i] + 1];
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}
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}
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for (int i = 0; i < size; ++i) {
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action_map.map[4].write[i] = reflection_map[sindx][action_map.map[0][i] + 1];
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}
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for (int a = 5; a < 8; ++a) {
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for (int i = 0; i < size; ++i) {
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action_map.map[a].write[i] = rotation_map[sindx][action_map.map[a - 1][i] + 1];
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}
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}
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return action_map;
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}
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// Generate all distincts rotations of a 2D array given its symmetries;
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Vector<Array2D<int>> Tile::generate_oriented(Array2D<int> data, WaveFormCollapse::Symmetry symmetry) {
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Vector<Array2D<int>> oriented;
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oriented.push_back(data);
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switch (symmetry) {
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case WaveFormCollapse::SYMMETRY_I:
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case WaveFormCollapse::SYMMETRY_BACKSLASH:
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oriented.push_back(data.rotated());
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break;
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case WaveFormCollapse::SYMMETRY_T:
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case WaveFormCollapse::SYMMETRY_L:
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oriented.push_back(data = data.rotated());
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oriented.push_back(data = data.rotated());
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oriented.push_back(data = data.rotated());
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break;
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case WaveFormCollapse::SYMMETRY_P:
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oriented.push_back(data = data.rotated());
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oriented.push_back(data = data.rotated());
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oriented.push_back(data = data.rotated());
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oriented.push_back(data = data.rotated().reflected());
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oriented.push_back(data = data.rotated());
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oriented.push_back(data = data.rotated());
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oriented.push_back(data = data.rotated());
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break;
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default:
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break;
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}
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return oriented;
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}
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void Tile::set_generate_data(const PoolIntArray &p_data, const int width, const int height) {
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data.clear();
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Array2D<int> d(p_data, height, width);
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data = generate_oriented(d, symmetry);
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}
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PoolIntArray Tile::data_get(const int index) {
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ERR_FAIL_INDEX_V(index, data.size(), PoolIntArray());
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const Array2D<int> arr = data.write[index];
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PoolIntArray ret;
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const int *p = arr.data.ptr();
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int s = arr.data.size();
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ret.resize(s);
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PoolIntArray::Write w = ret.write();
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for (int i = 0; i < s; ++i) {
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w[i] = p[i];
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}
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w.release();
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return ret;
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}
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void Tile::data_set(const int index, const PoolIntArray &p_data, const int width, const int height) {
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ERR_FAIL_INDEX(index, data.size());
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data.write[index].set_data(p_data, height, width);
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}
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void Tile::data_remove(const int index) {
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ERR_FAIL_INDEX(index, data.size());
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data.remove(index);
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}
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Tile::Tile() {
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symmetry = WaveFormCollapse::SYMMETRY_X;
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weight = 0;
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}
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Tile::Tile(WaveFormCollapse::Symmetry p_symmetry, double p_weight) {
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symmetry = p_symmetry;
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weight = p_weight;
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}
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// Create a tile with its differents orientations, its symmetries and its weight on the distribution of tiles.
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Tile::Tile(const Vector<Array2D<int>> &p_data, WaveFormCollapse::Symmetry p_symmetry, double p_weight) {
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data = p_data;
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symmetry = p_symmetry;
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weight = p_weight;
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}
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// Create a tile with its base orientation, its symmetries and its weight on the distribution of tiles.
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// The other orientations are generated with its first one.
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Tile::Tile(const Array2D<int> &p_data, WaveFormCollapse::Symmetry p_symmetry, double p_weight) {
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data = generate_oriented(p_data, p_symmetry);
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symmetry = p_symmetry;
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weight = p_weight;
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}
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Tile::Tile(const PoolIntArray &p_data, const int width, const int height, WaveFormCollapse::Symmetry p_symmetry, double p_weight) {
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Array2D<int> d(p_data, height, width);
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data = generate_oriented(d, p_symmetry);
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symmetry = p_symmetry;
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weight = p_weight;
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}
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int TilingWaveFormCollapse::tile_add_generated(const PoolIntArray &data, const int width, const int height, const WaveFormCollapse::Symmetry symmetry, const float weight) {
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tiles.push_back(Tile(data, width, height, symmetry, weight));
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return tiles.size() - 1;
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}
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int TilingWaveFormCollapse::tile_add(const WaveFormCollapse::Symmetry symmetry, const float weight) {
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tiles.push_back(Tile(symmetry, weight));
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return tiles.size() - 1;
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}
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int TilingWaveFormCollapse::tile_create() {
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tiles.push_back(Tile());
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return tiles.size() - 1;
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}
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void TilingWaveFormCollapse::tile_remove(const int tile_index) {
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ERR_FAIL_INDEX(tile_index, tiles.size());
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tiles.remove(tile_index);
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}
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int TilingWaveFormCollapse::tile_count_get() {
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return tiles.size();
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}
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void TilingWaveFormCollapse::tile_data_add(const int tile_index, const PoolIntArray &data, const int width, const int height) {
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ERR_FAIL_INDEX(tile_index, tiles.size());
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Array2D<int> d(data, height, width);
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tiles.write[tile_index].data.push_back(d);
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}
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void TilingWaveFormCollapse::tile_data_generated_add(const int tile_index, const PoolIntArray &data, const int width, const int height) {
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ERR_FAIL_INDEX(tile_index, tiles.size());
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tiles.write[tile_index].set_generate_data(data, width, height);
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}
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PoolIntArray TilingWaveFormCollapse::tile_data_get(const int tile_index, const int data_index) {
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ERR_FAIL_INDEX_V(tile_index, tiles.size(), PoolIntArray());
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return tiles.write[tile_index].data_get(data_index);
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}
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void TilingWaveFormCollapse::tile_data_set(const int tile_index, const int data_index, const PoolIntArray &data, const int width, const int height) {
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ERR_FAIL_INDEX(tile_index, tiles.size());
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tiles.write[tile_index].data_set(data_index, data, width, height);
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}
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void TilingWaveFormCollapse::tile_data_remove(const int tile_index, const int data_index) {
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ERR_FAIL_INDEX(tile_index, tiles.size());
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tiles.write[tile_index].data_remove(data_index);
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}
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void TilingWaveFormCollapse::tile_data_clear(const int tile_index) {
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ERR_FAIL_INDEX(tile_index, tiles.size());
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tiles.write[tile_index].data.clear();
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}
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int TilingWaveFormCollapse::tile_data_count_get(const int tile_index) {
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ERR_FAIL_INDEX_V(tile_index, tiles.size(), 0);
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return tiles[tile_index].data.size();
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}
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int TilingWaveFormCollapse::tile_width_get(const int tile_index, const int data_index) {
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ERR_FAIL_INDEX_V(tile_index, tiles.size(), 0);
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ERR_FAIL_INDEX_V(data_index, tiles[tile_index].data.size(), 0);
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return tiles[tile_index].data[data_index].width;
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}
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int TilingWaveFormCollapse::tile_height_get(const int tile_index, const int data_index) {
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ERR_FAIL_INDEX_V(tile_index, tiles.size(), 0);
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ERR_FAIL_INDEX_V(data_index, tiles[tile_index].data.size(), 0);
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return tiles[tile_index].data[data_index].height;
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}
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WaveFormCollapse::Symmetry TilingWaveFormCollapse::tile_symmetry_get(const int tile_index) {
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ERR_FAIL_INDEX_V(tile_index, tiles.size(), WaveFormCollapse::SYMMETRY_X);
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return tiles[tile_index].symmetry;
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}
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void TilingWaveFormCollapse::tile_symmetry_set(const int tile_index, const WaveFormCollapse::Symmetry val) {
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ERR_FAIL_INDEX(tile_index, tiles.size());
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tiles.write[tile_index].symmetry = val;
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}
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float TilingWaveFormCollapse::tile_weight_get(const int tile_index) {
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ERR_FAIL_INDEX_V(tile_index, tiles.size(), 0);
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return tiles[tile_index].weight;
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}
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void TilingWaveFormCollapse::tile_weight_set(const int tile_index, const float val) {
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ERR_FAIL_INDEX(tile_index, tiles.size());
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tiles.write[tile_index].weight = val;
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}
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String TilingWaveFormCollapse::tile_name_get(const int tile_index) {
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ERR_FAIL_INDEX_V(tile_index, tiles.size(), String());
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return tiles[tile_index].name;
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}
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void TilingWaveFormCollapse::tile_name_set(const int tile_index, const String &val) {
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ERR_FAIL_INDEX(tile_index, tiles.size());
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tiles.write[tile_index].name = val;
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}
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int TilingWaveFormCollapse::neighbour_data_add(const int n1, const int n2, const int n3, const int n4) {
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NeighbourData d(n1, n2, n3, n4);
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neighbors.push_back(d);
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return neighbors.size() - 1;
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}
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PoolIntArray TilingWaveFormCollapse::neighbour_data_get(const int index) {
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ERR_FAIL_INDEX_V(index, neighbors.size(), PoolIntArray());
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const NeighbourData &d = neighbors[index];
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PoolIntArray p;
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p.resize(4);
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PoolIntArray::Write w = p.write();
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for (int i = 0; i < 4; ++i) {
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w[i] = d.data[i];
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}
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w.release();
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return p;
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}
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void TilingWaveFormCollapse::neighbour_data_remove(const int index) {
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ERR_FAIL_INDEX(index, neighbors.size());
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neighbors.remove(index);
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}
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void TilingWaveFormCollapse::neighbour_data_set(const int index, const int n1, const int n2, const int n3, const int n4) {
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ERR_FAIL_INDEX(index, neighbors.size());
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NeighbourData d(n1, n2, n3, n4);
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neighbors.write[index] = d;
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}
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// Returns false if the given tile and orientation does not exist, or if the coordinates are not in the wave
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bool TilingWaveFormCollapse::set_tile(int tile_id, int orientation, int i, int j) {
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if (tile_id >= static_cast<int>(oriented_tile_ids.size()) || orientation >= static_cast<int>(oriented_tile_ids[tile_id].size()) ||
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i >= _wave_height || j >= _wave_width) {
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return false;
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}
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int oriented_tile_id = oriented_tile_ids[tile_id][orientation];
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set_tile(oriented_tile_id, i, j);
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return true;
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}
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void TilingWaveFormCollapse::set_tiles(const Vector<Tile> &p_tiles) {
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tiles = p_tiles;
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}
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void TilingWaveFormCollapse::set_neighbours(const Vector<NeighbourData> &p_neighbors) {
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neighbors = p_neighbors;
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}
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// Generate mapping from id to oriented tiles and vice versa.
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void TilingWaveFormCollapse::generate_oriented_tile_ids() {
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id_to_oriented_tile.clear();
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oriented_tile_ids.clear();
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int id = 0;
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for (int i = 0; i < tiles.size(); i++) {
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oriented_tile_ids.push_back({});
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for (int j = 0; j < tiles[i].data.size(); j++) {
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id_to_oriented_tile.push_back(IdToTilePair(i, j));
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oriented_tile_ids.write[i].push_back(id);
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id++;
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}
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}
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}
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// Generate the propagator which will be used in the wfc algorithm.
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void TilingWaveFormCollapse::generate_propagator() {
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int nb_oriented_tiles = id_to_oriented_tile.size();
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Vector<DensePropagatorHelper> dense_propagator;
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dense_propagator.resize(nb_oriented_tiles);
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for (int i = 0; i < nb_oriented_tiles; ++i) {
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dense_propagator.write[i].resize(nb_oriented_tiles);
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}
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int size = neighbors.size();
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for (int i = 0; i < size; ++i) {
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const NeighbourData &neighbour = neighbors[i];
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int tile1 = neighbour.data[0];
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int tile2 = neighbour.data[2];
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Tile::ActionMap action_map1 = Tile::generate_action_map(tiles[tile1].symmetry);
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Tile::ActionMap action_map2 = Tile::generate_action_map(tiles[tile2].symmetry);
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generate_propagator_add_helper(&action_map1, &action_map2, &dense_propagator, neighbour, 0, 2);
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generate_propagator_add_helper(&action_map1, &action_map2, &dense_propagator, neighbour, 1, 0);
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generate_propagator_add_helper(&action_map1, &action_map2, &dense_propagator, neighbour, 2, 1);
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generate_propagator_add_helper(&action_map1, &action_map2, &dense_propagator, neighbour, 3, 3);
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generate_propagator_add_helper(&action_map1, &action_map2, &dense_propagator, neighbour, 4, 1);
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generate_propagator_add_helper(&action_map1, &action_map2, &dense_propagator, neighbour, 5, 3);
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generate_propagator_add_helper(&action_map1, &action_map2, &dense_propagator, neighbour, 6, 2);
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generate_propagator_add_helper(&action_map1, &action_map2, &dense_propagator, neighbour, 7, 0);
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}
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Vector<PropagatorStateEntry> propagator;
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propagator.resize(nb_oriented_tiles);
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PropagatorStateEntry *propw = propagator.ptrw();
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for (int i = 0; i < nb_oriented_tiles; ++i) {
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for (int j = 0; j < nb_oriented_tiles; ++j) {
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for (int d = 0; d < 4; ++d) {
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if (propw[i].directions[d][j]) {
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propw[i].directions[d].push_back(j);
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}
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}
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}
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}
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set_propagator_state(propagator);
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}
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// Get probability of presence of tiles.
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Vector<double> TilingWaveFormCollapse::get_tiles_weights(const Vector<Tile> &tiles) {
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Vector<double> frequencies;
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for (int i = 0; i < tiles.size(); ++i) {
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for (int j = 0; j < tiles[i].data.size(); ++j) {
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frequencies.push_back(tiles[i].weight / tiles[i].data.size());
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}
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}
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return frequencies;
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}
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void TilingWaveFormCollapse::set_tile(int tile_id, int i, int j) {
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for (int p = 0; p < id_to_oriented_tile.size(); p++) {
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if (tile_id != static_cast<int>(p)) {
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remove_wave_pattern(i, j, p);
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}
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}
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}
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Array2D<int> TilingWaveFormCollapse::run() {
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Array2D<int> a = WaveFormCollapse::run();
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if (a.width == 0 && a.height == 0) {
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return Array2D<int>(0, 0);
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}
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return id_to_tiling(a);
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}
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// Translate the generic WFC result into the image result
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Array2D<int> TilingWaveFormCollapse::id_to_tiling(Array2D<int> ids) {
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int size = tiles[0].data[0].height;
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Array2D<int> tiling(size * ids.height, size * ids.width);
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for (int i = 0; i < ids.height; i++) {
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for (int j = 0; j < ids.width; j++) {
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IdToTilePair oriented_tile = id_to_oriented_tile[ids.get(i, j)];
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for (int y = 0; y < size; y++) {
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for (int x = 0; x < size; x++) {
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tiling.get(i * size + y, j * size + x) = tiles[oriented_tile.id].data[oriented_tile.oriented_tile].get(y, x);
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}
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}
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}
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}
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return tiling;
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}
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void TilingWaveFormCollapse::initialize() {
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generate_oriented_tile_ids();
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generate_propagator();
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WaveFormCollapse::initialize();
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}
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TilingWaveFormCollapse::TilingWaveFormCollapse() {
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}
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TilingWaveFormCollapse::~TilingWaveFormCollapse() {
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}
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void TilingWaveFormCollapse::_bind_methods() {
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ClassDB::bind_method(D_METHOD("tile_add_generated", "data", "width", "height", "symmetry", "weight"), &TilingWaveFormCollapse::tile_add_generated);
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ClassDB::bind_method(D_METHOD("tile_add", "symmetry", "weight"), &TilingWaveFormCollapse::tile_add);
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ClassDB::bind_method(D_METHOD("tile_create"), &TilingWaveFormCollapse::tile_create);
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ClassDB::bind_method(D_METHOD("tile_remove", "tile_index"), &TilingWaveFormCollapse::tile_remove);
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ClassDB::bind_method(D_METHOD("tile_count_get"), &TilingWaveFormCollapse::tile_count_get);
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ClassDB::bind_method(D_METHOD("tile_data_add", "tile_index", "data", "width", "height"), &TilingWaveFormCollapse::tile_data_add);
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ClassDB::bind_method(D_METHOD("tile_data_generated_add", "tile_index", "data", "width", "height"), &TilingWaveFormCollapse::tile_data_generated_add);
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ClassDB::bind_method(D_METHOD("tile_data_get", "tile_index", "data_index"), &TilingWaveFormCollapse::tile_data_get);
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ClassDB::bind_method(D_METHOD("tile_data_set", "tile_index", "data_index", "data", "width", "height"), &TilingWaveFormCollapse::tile_data_set);
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ClassDB::bind_method(D_METHOD("tile_data_remove", "tile_index", "data_index"), &TilingWaveFormCollapse::tile_data_remove);
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ClassDB::bind_method(D_METHOD("tile_data_clear", "tile_index"), &TilingWaveFormCollapse::tile_data_clear);
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ClassDB::bind_method(D_METHOD("tile_data_count_get", "tile_index"), &TilingWaveFormCollapse::tile_data_count_get);
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ClassDB::bind_method(D_METHOD("tile_width_get", "tile_index", "data_index"), &TilingWaveFormCollapse::tile_width_get);
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ClassDB::bind_method(D_METHOD("tile_height_get", "tile_index", "data_index"), &TilingWaveFormCollapse::tile_height_get);
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ClassDB::bind_method(D_METHOD("tile_symmetry_get", "tile_index"), &TilingWaveFormCollapse::tile_symmetry_get);
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ClassDB::bind_method(D_METHOD("tile_symmetry_set", "tile_index", "val"), &TilingWaveFormCollapse::tile_symmetry_set);
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ClassDB::bind_method(D_METHOD("tile_weight_get", "tile_index"), &TilingWaveFormCollapse::tile_weight_get);
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ClassDB::bind_method(D_METHOD("tile_weight_set", "tile_index", "val"), &TilingWaveFormCollapse::tile_weight_set);
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ClassDB::bind_method(D_METHOD("tile_name_get", "tile_index"), &TilingWaveFormCollapse::tile_name_get);
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ClassDB::bind_method(D_METHOD("tile_name_set", "tile_index", "val"), &TilingWaveFormCollapse::tile_name_set);
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ClassDB::bind_method(D_METHOD("neighbour_data_add", "n1", "n2", "n3", "n4"), &TilingWaveFormCollapse::neighbour_data_add);
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ClassDB::bind_method(D_METHOD("neighbour_data_get", "index"), &TilingWaveFormCollapse::neighbour_data_get);
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ClassDB::bind_method(D_METHOD("neighbour_data_remove", "index"), &TilingWaveFormCollapse::neighbour_data_remove);
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ClassDB::bind_method(D_METHOD("neighbour_data_set", "tile_index", "n1", "n2", "n3", "n4"), &TilingWaveFormCollapse::neighbour_data_set);
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}
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void TilingWaveFormCollapse::generate_propagator_add_helper(Tile::ActionMap *action_map1, Tile::ActionMap *action_map2,
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Vector<DensePropagatorHelper> *dense_propagator,
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const NeighbourData &neighbour, int action, int direction) {
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// --
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int tile1 = neighbour.data[0];
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int orientation1 = neighbour.data[1];
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int tile2 = neighbour.data[2];
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int orientation2 = neighbour.data[3];
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int temp_orientation1 = action_map1->map[action][orientation1];
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int temp_orientation2 = action_map2->map[action][orientation2];
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int oriented_tile_id1 = oriented_tile_ids[tile1][temp_orientation1];
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int oriented_tile_id2 = oriented_tile_ids[tile2][temp_orientation2];
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dense_propagator->write[oriented_tile_id1].directions[direction].write[oriented_tile_id2] = true;
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direction = get_opposite_direction(direction);
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dense_propagator->write[oriented_tile_id2].directions[direction].write[oriented_tile_id1] = true;
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} |