258 lines
8.8 KiB
C++
258 lines
8.8 KiB
C++
#include "voxel_buffer.h"
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#include <string.h>
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//#define VOXEL_AT(_data, x, y, z) data[z][x][y]
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#define VOXEL_AT(_data, _x, _y, _z) _data[index(_x,_y,_z)]
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VoxelBuffer::VoxelBuffer() {
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}
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VoxelBuffer::~VoxelBuffer() {
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clear();
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}
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void VoxelBuffer::create(int sx, int sy, int sz) {
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if (sx <= 0 || sy <= 0 || sz <= 0) {
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return;
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}
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Vector3i new_size(sx, sy, sz);
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if (new_size != _size) {
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for (unsigned int i = 0; i < MAX_CHANNELS; ++i) {
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Channel & channel = _channels[i];
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if (channel.data) {
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// TODO Optimize with realloc
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delete_channel(i, _size);
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create_channel(i, new_size);
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}
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}
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_size = new_size;
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}
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}
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void VoxelBuffer::clear() {
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for (unsigned int i = 0; i < MAX_CHANNELS; ++i) {
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Channel & channel = _channels[i];
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if (channel.data) {
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delete_channel(i, _size);
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}
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}
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}
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void VoxelBuffer::clear_channel(unsigned int channel_index, int clear_value) {
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ERR_FAIL_INDEX(channel_index, MAX_CHANNELS);
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delete_channel(channel_index, _size);
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_channels[channel_index].defval = clear_value;
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}
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int VoxelBuffer::get_voxel(int x, int y, int z, unsigned int channel_index) const {
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ERR_FAIL_INDEX_V(channel_index, MAX_CHANNELS, 0);
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const Channel & channel = _channels[channel_index];
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if (validate_pos(x, y, z) && channel.data) {
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return VOXEL_AT(channel.data, x,y,z);
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}
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else {
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return channel.defval;
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}
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}
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void VoxelBuffer::set_voxel(int value, int x, int y, int z, unsigned int channel_index) {
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ERR_FAIL_INDEX(channel_index, MAX_CHANNELS);
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ERR_FAIL_COND(!validate_pos(x, y, z));
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Channel & channel = _channels[channel_index];
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if (channel.defval != value) {
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if (channel.data == NULL) {
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create_channel(channel_index, _size);
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}
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VOXEL_AT(channel.data, x, y, z) = value;
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}
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}
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void VoxelBuffer::set_voxel_v(int value, Vector3 pos, unsigned int channel_index) {
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set_voxel(value, pos.x, pos.y, pos.z, channel_index);
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}
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void VoxelBuffer::fill(int defval, unsigned int channel_index) {
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ERR_FAIL_INDEX(channel_index, MAX_CHANNELS);
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Channel & channel = _channels[channel_index];
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if (channel.data == NULL && channel.defval == defval)
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return;
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else
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create_channel_noinit(channel_index, _size);
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unsigned int volume = get_volume();
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memset(channel.data, defval, volume);
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}
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void VoxelBuffer::fill_area(int defval, Vector3i min, Vector3i max, unsigned int channel_index) {
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ERR_FAIL_INDEX(channel_index, MAX_CHANNELS);
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min.clamp_to(Vector3i(0, 0, 0), _size);
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max.clamp_to(Vector3i(0, 0, 0), _size);
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Vector3i area_size = max - min;
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Channel & channel = _channels[channel_index];
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if (channel.data == NULL && channel.defval == defval)
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return;
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else
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create_channel(channel_index, _size);
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Vector3i pos;
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for (pos.z = min.z; pos.z < max.z; ++pos.z) {
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for (pos.x = min.x; pos.x < max.x; ++pos.x) {
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unsigned int dst_ri = row_index(pos.x, pos.y, pos.z);
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memset(&channel.data[dst_ri], defval, area_size.y * sizeof(uint8_t));
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}
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}
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}
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bool VoxelBuffer::is_uniform(unsigned int channel_index) {
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ERR_FAIL_INDEX_V(channel_index, MAX_CHANNELS, true);
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Channel & channel = _channels[channel_index];
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if (channel.data == NULL)
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return true;
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uint8_t voxel = channel.data[0];
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unsigned int volume = get_volume();
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for (unsigned int i = 0; i < volume; ++i) {
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if (channel.data[i] != voxel) {
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return false;
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}
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}
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return true;
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}
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void VoxelBuffer::optimize() {
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for (unsigned int i = 0; i < MAX_CHANNELS; ++i) {
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if (_channels[i].data && is_uniform(i)) {
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clear_channel(i, _channels[i].data[0]);
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}
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}
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}
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void VoxelBuffer::copy_from(const VoxelBuffer & other, unsigned int channel_index) {
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ERR_FAIL_INDEX(channel_index, MAX_CHANNELS);
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ERR_FAIL_COND(other._size == _size);
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Channel & channel = _channels[channel_index];
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const Channel & other_channel = other._channels[channel_index];
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if (other_channel.data) {
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if (channel.data == NULL) {
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create_channel_noinit(channel_index, _size);
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}
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memcpy(channel.data, other_channel.data, get_volume() * sizeof(uint8_t));
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}
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else if(channel.data) {
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delete_channel(channel_index, _size);
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}
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channel.defval = other_channel.defval;
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}
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void VoxelBuffer::copy_from(const VoxelBuffer & other, Vector3i src_min, Vector3i src_max, Vector3i dst_min, unsigned int channel_index) {
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ERR_FAIL_INDEX(channel_index, MAX_CHANNELS);
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Channel & channel = _channels[channel_index];
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const Channel & other_channel = other._channels[channel_index];
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src_min.clamp_to(Vector3i(0, 0, 0), other._size);
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src_max.clamp_to(Vector3i(0, 0, 0), other._size);
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dst_min.clamp_to(Vector3i(0, 0, 0), _size);
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Vector3i area_size = src_max - src_min;
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Vector3i dst_max = src_min + area_size;
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if (area_size == _size) {
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copy_from(other, channel_index);
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}
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else {
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if (other_channel.data) {
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if (channel.data == NULL) {
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create_channel(channel_index, _size);
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}
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// Copy row by row
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Vector3i pos;
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for (pos.z = 0; pos.z < area_size.z; ++pos.z) {
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for (pos.x = 0; pos.x < area_size.x; ++pos.x) {
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// Row direction is Y
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unsigned int src_ri = other.row_index(pos.x + src_min.x, pos.y + src_min.y, pos.z + src_min.z);
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unsigned int dst_ri = row_index(pos.x + dst_min.x, pos.y + dst_min.y, pos.z + dst_min.z);
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memcpy(&channel.data[dst_ri], &other_channel.data[src_ri], area_size.y * sizeof(uint8_t));
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}
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}
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}
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else if (channel.defval != other_channel.defval) {
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if (channel.data == NULL) {
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create_channel(channel_index, _size);
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}
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// Set row by row
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Vector3i pos;
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for (pos.z = 0; pos.z < area_size.z; ++pos.z) {
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for (pos.x = 0; pos.x < area_size.x; ++pos.x) {
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unsigned int dst_ri = row_index(pos.x + dst_min.x, pos.y + dst_min.y, pos.z + dst_min.z);
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memset(&channel.data[dst_ri], other_channel.defval, area_size.y * sizeof(uint8_t));
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}
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}
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}
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}
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}
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void VoxelBuffer::create_channel(int i, Vector3i size, uint8_t defval) {
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create_channel_noinit(i, size);
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memset(_channels[i].data, defval, get_volume() * sizeof(uint8_t));
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}
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void VoxelBuffer::create_channel_noinit(int i, Vector3i size) {
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Channel & channel = _channels[i];
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unsigned int volume = size.x * size.y * size.z;
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channel.data = (uint8_t*)memalloc(volume * sizeof(uint8_t));
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}
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void VoxelBuffer::delete_channel(int i, Vector3i size) {
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Channel & channel = _channels[i];
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memfree(channel.data);
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channel.data = NULL;
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}
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void VoxelBuffer::_bind_methods() {
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ObjectTypeDB::bind_method(_MD("create", "sx", "sy", "sz"), &VoxelBuffer::create);
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ObjectTypeDB::bind_method(_MD("clear"), &VoxelBuffer::clear);
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ObjectTypeDB::bind_method(_MD("get_size_x"), &VoxelBuffer::get_size_x);
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ObjectTypeDB::bind_method(_MD("get_size_y"), &VoxelBuffer::get_size_y);
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ObjectTypeDB::bind_method(_MD("get_size_z"), &VoxelBuffer::get_size_z);
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ObjectTypeDB::bind_method(_MD("set_voxel", "value", "x", "y", "z", "channel"), &VoxelBuffer::_set_voxel_binding, DEFVAL(0));
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ObjectTypeDB::bind_method(_MD("set_voxel_v", "value", "pos", "channel"), &VoxelBuffer::set_voxel_v, DEFVAL(0));
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ObjectTypeDB::bind_method(_MD("get_voxel", "x", "y", "z", "channel"), &VoxelBuffer::_get_voxel_binding, DEFVAL(0));
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ObjectTypeDB::bind_method(_MD("fill", "value", "channel"), &VoxelBuffer::fill, DEFVAL(0));
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ObjectTypeDB::bind_method(_MD("fill_area", "value", "min", "max", "channel"), &VoxelBuffer::_fill_area_binding, DEFVAL(0));
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ObjectTypeDB::bind_method(_MD("copy_from", "other:VoxelBuffer", "channel"), &VoxelBuffer::_copy_from_binding, DEFVAL(0));
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ObjectTypeDB::bind_method(_MD("copy_from_area", "other:VoxelBuffer", "src_min", "src_max", "dst_min", "channel"), &VoxelBuffer::_copy_from_area_binding, DEFVAL(0));
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ObjectTypeDB::bind_method(_MD("is_uniform", "channel"), &VoxelBuffer::is_uniform, DEFVAL(0));
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ObjectTypeDB::bind_method(_MD("optimize"), &VoxelBuffer::optimize);
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}
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void VoxelBuffer::_copy_from_binding(Ref<VoxelBuffer> other, unsigned int channel) {
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ERR_FAIL_COND(other.is_null());
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copy_from(**other, channel);
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}
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void VoxelBuffer::_copy_from_area_binding(Ref<VoxelBuffer> other, Vector3 src_min, Vector3 src_max, Vector3 dst_min, unsigned int channel) {
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ERR_FAIL_COND(other.is_null());
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copy_from(**other, Vector3i(src_min), Vector3i(src_max), Vector3i(dst_min), channel);
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}
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