334 lines
11 KiB
C++
334 lines
11 KiB
C++
/******************************************************************************
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This file is part of a voxel plugin for OGRE
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Copyright (C) 2006 David Williams
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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******************************************************************************/
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#include <fstream>
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#include <iostream> //FIXME - remove this...
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#include <queue>
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#include "Block.h"
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#include "Volume.h"
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#include "VolumeIterator.h" //Maybe this shouldn't be here?
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using namespace boost;
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namespace PolyVox
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{
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Volume::Volume()
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{
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for(uint16_t i = 0; i < POLYVOX_NO_OF_BLOCKS_IN_VOLUME; ++i)
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{
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mBlocks[i] = new Block;
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}
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}
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Volume::Volume(const Volume& rhs)
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{
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std::cout << "Warning - Copying Volume" << std::endl;
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*this = rhs;
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}
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Volume::~Volume()
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{
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for(uint16_t i = 0; i < POLYVOX_NO_OF_BLOCKS_IN_VOLUME; ++i)
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{
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delete mBlocks[i];
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}
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}
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Volume& Volume::operator=(const Volume& rhs)
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{
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std::cout << "Warning - Assigning Volume" << std::endl;
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if (this == &rhs)
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{
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return *this;
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}
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/*for(uint16_t i = 0; i < POLYVOX_NO_OF_BLOCKS_IN_VOLUME; ++i)
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{
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//FIXME - Add checking...
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mBlocks[i] = SharedPtr<Block>(new Block);
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}*/
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for(uint16_t i = 0; i < POLYVOX_NO_OF_BLOCKS_IN_VOLUME; ++i)
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{
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//I think this is OK... If a block is in the homogeneous array it's ref count will be greater
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//than 1 as there will be the pointer in the volume and the pointer in the static homogeneous array.
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/*if(rhs.mBlocks[i].unique())
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{
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mBlocks[i] = SharedPtr<Block>(new Block(*(rhs.mBlocks[i])));
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}
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else
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{*/
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//we have a block in the homogeneous array - just copy the pointer.
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mBlocks[i] = rhs.mBlocks[i];
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//}
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}
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return *this;
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}
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/*uint8_t Volume::getVoxelAt(const uint16_t xPosition, const uint16_t yPosition, const uint16_t zPosition) const
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{
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const uint16_t blockX = xPosition >> POLYVOX_BLOCK_SIDE_LENGTH_POWER;
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const uint16_t blockY = yPosition >> POLYVOX_BLOCK_SIDE_LENGTH_POWER;
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const uint16_t blockZ = zPosition >> POLYVOX_BLOCK_SIDE_LENGTH_POWER;
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const uint16_t xOffset = xPosition - (blockX << POLYVOX_BLOCK_SIDE_LENGTH_POWER);
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const uint16_t yOffset = yPosition - (blockY << POLYVOX_BLOCK_SIDE_LENGTH_POWER);
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const uint16_t zOffset = zPosition - (blockZ << POLYVOX_BLOCK_SIDE_LENGTH_POWER);
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Block* block = mBlocks
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[
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blockX +
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blockY * POLYVOX_VOLUME_SIDE_LENGTH_IN_BLOCKS +
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blockZ * POLYVOX_VOLUME_SIDE_LENGTH_IN_BLOCKS * POLYVOX_VOLUME_SIDE_LENGTH_IN_BLOCKS
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];
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return block->getVoxelAt(xOffset,yOffset,zOffset);
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}*/
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/*void Volume::setVoxelAt(const uint16_t xPosition, const uint16_t yPosition, const uint16_t zPosition, const uint8_t value)
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{
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const uint16_t blockX = xPosition >> POLYVOX_BLOCK_SIDE_LENGTH_POWER;
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const uint16_t blockY = yPosition >> POLYVOX_BLOCK_SIDE_LENGTH_POWER;
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const uint16_t blockZ = zPosition >> POLYVOX_BLOCK_SIDE_LENGTH_POWER;
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const uint16_t xOffset = xPosition - (blockX << POLYVOX_BLOCK_SIDE_LENGTH_POWER);
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const uint16_t yOffset = yPosition - (blockY << POLYVOX_BLOCK_SIDE_LENGTH_POWER);
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const uint16_t zOffset = zPosition - (blockZ << POLYVOX_BLOCK_SIDE_LENGTH_POWER);
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Block* block = mBlocks
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[
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blockX +
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blockY * POLYVOX_VOLUME_SIDE_LENGTH_IN_BLOCKS +
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blockZ * POLYVOX_VOLUME_SIDE_LENGTH_IN_BLOCKS * POLYVOX_VOLUME_SIDE_LENGTH_IN_BLOCKS
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];
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block->setVoxelAt(xOffset,yOffset,zOffset, value);
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}*/
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Block* Volume::getBlock(uint16_t index)
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{
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return mBlocks[index];
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}
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bool Volume::containsPoint(Vector3DFloat pos, float boundary)
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{
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return (pos.x() < POLYVOX_VOLUME_SIDE_LENGTH - 1 - boundary)
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&& (pos.y() < POLYVOX_VOLUME_SIDE_LENGTH - 1 - boundary)
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&& (pos.z() < POLYVOX_VOLUME_SIDE_LENGTH - 1 - boundary)
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&& (pos.x() > boundary)
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&& (pos.y() > boundary)
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&& (pos.z() > boundary);
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}
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bool Volume::containsPoint(Vector3DInt32 pos, uint16_t boundary)
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{
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return (pos.x() < POLYVOX_VOLUME_SIDE_LENGTH - 1 - boundary)
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&& (pos.y() < POLYVOX_VOLUME_SIDE_LENGTH - 1 - boundary)
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&& (pos.z() < POLYVOX_VOLUME_SIDE_LENGTH - 1 - boundary)
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&& (pos.x() > boundary)
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&& (pos.y() > boundary)
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&& (pos.z() > boundary);
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}
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bool Volume::loadFromFile(const std::string& sFilename)
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{
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//Open the file
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std::ifstream file;
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file.open(sFilename.c_str(), std::ios::in | std::ios::binary);
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if(!file.is_open())
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{
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//LogManager::getSingleton().logMessage("Failed to open volume file " + sFilename);
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return false;
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}
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//Read volume dimensions
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uint8_t volumeWidth = 0;
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uint8_t volumeHeight = 0;
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uint8_t volumeDepth = 0;
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file.read(reinterpret_cast<char*>(&volumeWidth), sizeof(volumeWidth));
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file.read(reinterpret_cast<char*>(&volumeHeight), sizeof(volumeHeight));
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file.read(reinterpret_cast<char*>(&volumeDepth), sizeof(volumeDepth));
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if(file.fail())
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{
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//LogManager::getSingleton().logMessage("Failed to read dimentions");
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return false;
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}
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//Read data
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VolumeIterator volIter(*this);
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for(uint16_t z = 0; z < POLYVOX_VOLUME_SIDE_LENGTH; ++z)
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{
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for(uint16_t y = 0; y < POLYVOX_VOLUME_SIDE_LENGTH; ++y)
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{
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for(uint16_t x = 0; x < POLYVOX_VOLUME_SIDE_LENGTH; ++x)
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{
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uint8_t value;
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file.read(reinterpret_cast<char*>(&value), sizeof(value)); //FIXME - check for error here
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volIter.setVoxelAt(x,y,z,value);
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}
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}
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//Periodically see if we can tidy the memory to avoid excessive usage during loading.
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if(z%POLYVOX_BLOCK_SIDE_LENGTH == POLYVOX_BLOCK_SIDE_LENGTH-1)
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{
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tidy(); //FIXME - we don't actually have to tidy the whole volume here - just the part we loaded since the last call to tidy.
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}
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}
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return true;
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}
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bool Volume::saveToFile(const std::string& sFilename)
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{
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//Open the file
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std::ofstream file;
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file.open(sFilename.c_str(), std::ios::out | std::ios::binary);
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if(!file.is_open())
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{
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//LogManager::getSingleton().logMessage("Failed to open file for saving volume");
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return false;
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}
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//Read volume dimensions
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uint8_t volumeWidth = 0;
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uint8_t volumeHeight = 0;
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uint8_t volumeDepth = 0;
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file.write(reinterpret_cast<char*>(&volumeWidth), sizeof(volumeWidth));
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file.write(reinterpret_cast<char*>(&volumeHeight), sizeof(volumeHeight));
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file.write(reinterpret_cast<char*>(&volumeDepth), sizeof(volumeDepth));
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if(file.fail())
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{
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//LogManager::getSingleton().logMessage("Failed to write dimensions");
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return false;
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}
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//Write data
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VolumeIterator volIter(*this);
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for(uint16_t z = 0; z < POLYVOX_VOLUME_SIDE_LENGTH; ++z)
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{
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for(uint16_t y = 0; y < POLYVOX_VOLUME_SIDE_LENGTH; ++y)
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{
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for(uint16_t x = 0; x < POLYVOX_VOLUME_SIDE_LENGTH; ++x)
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{
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uint8_t value = volIter.getVoxelAt(x,y,z);
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file.write(reinterpret_cast<char*>(&value), sizeof(value)); //FIXME - check for error here
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}
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}
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}
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return true;
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}
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void Volume::regionGrow(uint16_t xStart, uint16_t yStart, uint16_t zStart, uint8_t value)
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{
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//FIXME - introduce integrer 'isInVolume' function
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if((xStart > POLYVOX_VOLUME_SIDE_LENGTH-1) || (yStart > POLYVOX_VOLUME_SIDE_LENGTH-1) || (zStart > POLYVOX_VOLUME_SIDE_LENGTH-1)
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|| (xStart < 0) || (yStart < 0) || (zStart < 0))
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{
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//FIXME - error message..
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return;
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}
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VolumeIterator volIter(*this);
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const uint8_t uSeedValue = volIter.getVoxelAt(xStart,yStart,zStart);
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if(value == uSeedValue)
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{
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return; //FIXME - Error message? Exception?
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}
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std::queue<Vector3DUint32> seeds;
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seeds.push(Vector3DUint32(xStart,yStart,zStart));
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while(!seeds.empty())
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{
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Vector3DUint32 currentSeed = seeds.front();
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seeds.pop();
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//std::cout << "x = " << currentSeed.x << " y = " << currentSeed.y << " z = " << currentSeed.z << std::endl;
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//FIXME - introduce 'safe' function which tests this?
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if((currentSeed.x() > POLYVOX_VOLUME_SIDE_LENGTH-2) || (currentSeed.y() > POLYVOX_VOLUME_SIDE_LENGTH-2) || (currentSeed.z() > POLYVOX_VOLUME_SIDE_LENGTH-2)
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|| (currentSeed.x() < 1) || (currentSeed.y() < 1) || (currentSeed.z() < 1))
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{
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continue;
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}
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if(volIter.getVoxelAt(currentSeed.x(), currentSeed.y(), currentSeed.z()+1) == uSeedValue)
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{
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volIter.setVoxelAt(currentSeed.x(), currentSeed.y(), currentSeed.z()+1, value);
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seeds.push(Vector3DUint32(currentSeed.x(), currentSeed.y(), currentSeed.z()+1));
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}
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if(volIter.getVoxelAt(currentSeed.x(), currentSeed.y(), currentSeed.z()-1) == uSeedValue)
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{
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volIter.setVoxelAt(currentSeed.x(), currentSeed.y(), currentSeed.z()-1, value);
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seeds.push(Vector3DUint32(currentSeed.x(), currentSeed.y(), currentSeed.z()-1));
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}
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if(volIter.getVoxelAt(currentSeed.x(), currentSeed.y()+1, currentSeed.z()) == uSeedValue)
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{
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volIter.setVoxelAt(currentSeed.x(), currentSeed.y()+1, currentSeed.z(), value);
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seeds.push(Vector3DUint32(currentSeed.x(), currentSeed.y()+1, currentSeed.z()));
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}
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if(volIter.getVoxelAt(currentSeed.x(), currentSeed.y()-1, currentSeed.z()) == uSeedValue)
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{
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volIter.setVoxelAt(currentSeed.x(), currentSeed.y()-1, currentSeed.z(), value);
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seeds.push(Vector3DUint32(currentSeed.x(), currentSeed.y()-1, currentSeed.z()));
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}
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if(volIter.getVoxelAt(currentSeed.x()+1, currentSeed.y(), currentSeed.z()) == uSeedValue)
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{
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volIter.setVoxelAt(currentSeed.x()+1, currentSeed.y(), currentSeed.z(), value);
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seeds.push(Vector3DUint32(currentSeed.x()+1, currentSeed.y(), currentSeed.z()));
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}
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if(volIter.getVoxelAt(currentSeed.x()-1, currentSeed.y(), currentSeed.z()) == uSeedValue)
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{
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volIter.setVoxelAt(currentSeed.x()-1, currentSeed.y(), currentSeed.z(), value);
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seeds.push(Vector3DUint32(currentSeed.x()-1, currentSeed.y(), currentSeed.z()));
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}
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}
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}
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void Volume::tidy(void)
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{
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//Check for homogeneous blocks
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/*for(uint32_t ct = 0; ct < POLYVOX_NO_OF_BLOCKS_IN_VOLUME; ++ct)
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{
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if(mBlocks[ct]->isHomogeneous())
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{
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//LogManager::getSingleton().logMessage("Got homogeneous block with value " + stringConverter::tostring(mBlocks[ct]->getVoxelAt(0,0,0)));
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const uint8_t homogeneousValue = mBlocks[ct]->getVoxelAt(0,0,0);
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SharedPtr<Block>& homogeneousBlock = mHomogeneousBlocks[homogeneousValue];
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if(homogeneousBlock.isNull())
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{
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homogeneousBlock = SharedPtr<Block>(new Block);
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homogeneousBlock->fillWithValue(homogeneousValue);
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}
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mBlocks[ct] = homogeneousBlock;
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}
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}*/
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}
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}
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