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973c2be1e1
The copying permission statements at the beginning of source files updated to refer to LGPL. Copyright dates extended till 2014 in advance.
305 lines
8.2 KiB
C++
305 lines
8.2 KiB
C++
// Created on: 2008-08-27
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// Created by: Vladislav ROMASHKO
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// Copyright (c) 2008-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and / or modify it
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// under the terms of the GNU Lesser General Public version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#include <Voxel_OctBoolDS.ixx>
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#include <Voxel_TypeDef.hxx>
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#include <stdlib.h>
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#include <TColStd_ListOfInteger.hxx>
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#include <TColStd_ListIteratorOfListOfInteger.hxx>
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static Standard_Byte gbits[8] = {1, 2, 4, 8, 16, 32, 64, 128};
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static Standard_Byte gnbits[8] = {255-1, 255-2, 255-4, 255-8, 255-16, 255-32, 255-64, 255-128};
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static iXYZ xyz;
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// Empty constructor
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Voxel_OctBoolDS::Voxel_OctBoolDS():Voxel_DS(),mySubVoxels(0)
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{
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}
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// Constructor with intialization.
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Voxel_OctBoolDS::Voxel_OctBoolDS(const Standard_Real x, const Standard_Real y, const Standard_Real z,
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const Standard_Real xlen, const Standard_Real ylen, const Standard_Real zlen,
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const Standard_Integer nbx, const Standard_Integer nby, const Standard_Integer nbz)
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:Voxel_DS(),mySubVoxels(0)
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{
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Init(x, y, z, xlen, ylen, zlen, nbx, nby, nbz);
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}
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// Initialization.
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void Voxel_OctBoolDS::Init(const Standard_Real x, const Standard_Real y, const Standard_Real z,
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const Standard_Real xlen, const Standard_Real ylen, const Standard_Real zlen,
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const Standard_Integer nbx, const Standard_Integer nby, const Standard_Integer nbz)
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{
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Destroy();
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Voxel_DS::Init(x, y, z, xlen, ylen, zlen, nbx, nby, nbz);
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if (!myNbX || !myNbY || !myNbZ)
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return;
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Standard_Integer nb_bytes = RealToInt(ceil(myNbXY * myNbZ / 8.0));
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Standard_Integer nb_slices = RealToInt(ceil(nb_bytes / 8.0));
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myData = (Standard_Address) calloc(nb_slices, sizeof(Standard_Byte*));
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}
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// Destructor
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void Voxel_OctBoolDS::Destroy()
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{
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if (myData)
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{
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SetZero();
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free((Standard_Byte**)myData);
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myData = 0;
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if (mySubVoxels)
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{
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delete (iXYZBool*)mySubVoxels;
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mySubVoxels = 0;
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}
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}
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}
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void Voxel_OctBoolDS::SetZero()
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{
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if (myData)
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{
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Standard_Integer nb_bytes = RealToInt(ceil(myNbXY * myNbZ / 8.0));
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Standard_Integer ix = 0, nb_slices = RealToInt(ceil(nb_bytes / 8.0));
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for (; ix < nb_slices; ix++)
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{
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if (((Standard_Byte**)myData)[ix])
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{
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free(((Standard_Byte**)myData)[ix]);
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((Standard_Byte**)myData)[ix] = 0;
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}
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}
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}
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if (mySubVoxels)
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{
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iXYZBool* map = (iXYZBool*) mySubVoxels;
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map->Clear();
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}
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}
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// Access to the boolean information attached to a particular voxel:
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// Info: (ix >= 0 && ix < theNb_x), etc.
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void Voxel_OctBoolDS::Set(const Standard_Integer ix, const Standard_Integer iy, const Standard_Integer iz,
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const Standard_Boolean data)
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{
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// All 8 sub-voxels have the same value.
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// No need anymore to keep them in memory.
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if (IsSplit(ix, iy, iz))
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{
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UnSplit(ix, iy, iz);
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}
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Standard_Integer ibit = ix + myNbX * iy + myNbXY * iz;
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Standard_Integer islice = ibit >> 6;
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if (!data && !((Standard_Byte**)myData)[islice])
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return; // don't allocate a slice of data for setting a 0 value
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// Allocate the slice if it is not done yet.
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if (!((Standard_Byte**)myData)[islice])
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{
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((Standard_Byte**)myData)[islice] = (Standard_Byte*) calloc(8/*number of bytes in slice*/, sizeof(Standard_Byte));
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}
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// Index within 8 bytes of the slice.
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Standard_Integer ibit_in_current_slice = ibit - (islice << 6);
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Standard_Integer ibyte = ibit_in_current_slice >> 3;
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// Value (byte)
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Standard_Byte value = ((Standard_Byte*)((Standard_Byte**)myData)[islice])[ibyte];
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// Position of data in the 8 bit-"value".
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Standard_Integer shift = ibit_in_current_slice - (ibyte << 3);
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// Set data
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if (data != ((value & gbits[shift]) ? Standard_True : Standard_False))
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{
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if (data)
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value |= gbits[shift];
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else
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value &= gnbits[shift];
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((Standard_Byte*)((Standard_Byte**)myData)[islice])[ibyte] = value;
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}
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}
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void Voxel_OctBoolDS::Set(const Standard_Integer ix, const Standard_Integer iy, const Standard_Integer iz,
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const Standard_Integer ioct, const Standard_Boolean data)
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{
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// If the voxel is not split yet, do it now.
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if (!IsSplit(ix, iy, iz))
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{
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Split(ix, iy, iz);
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}
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// Voxel
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xyz.ix = ix;
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xyz.iy = iy;
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xyz.iz = iz;
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// Take the value
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Standard_Byte value = ((iXYZBool*)mySubVoxels)->Find(xyz);
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// Set data
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if (data != ((value & gbits[ioct]) ? Standard_True : Standard_False))
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{
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if (data)
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value |= gbits[ioct];
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else
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value &= gnbits[ioct];
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((iXYZBool*)mySubVoxels)->ChangeFind(xyz) = value;
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}
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}
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Standard_Boolean Voxel_OctBoolDS::Get(const Standard_Integer ix, const Standard_Integer iy, const Standard_Integer iz) const
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{
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Standard_Integer ibit = ix + myNbX * iy + myNbXY * iz;
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Standard_Integer islice = ibit >> 6;
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// If the slice of data is not allocated, it means that its values are 0.
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if (!((Standard_Byte**)myData)[islice])
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return Standard_False;
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// Index within 8 bytes of the slice.
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Standard_Integer ibit_in_current_slice = ibit - (islice << 6);
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Standard_Integer ibyte = ibit_in_current_slice >> 3;
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// Value (byte)
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Standard_Byte value = ((Standard_Byte*)((Standard_Byte**)myData)[islice])[ibyte];
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// Position of data in the 8 bit-"value".
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Standard_Integer shift = ibit_in_current_slice - (ibyte << 3);
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return ((value & gbits[shift]) ? Standard_True : Standard_False);
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}
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Standard_Boolean Voxel_OctBoolDS::Get(const Standard_Integer ix, const Standard_Integer iy, const Standard_Integer iz,
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const Standard_Integer ioct) const
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{
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// If the voxel is not split, return the value of the voxel.
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if (!IsSplit(ix, iy, iz))
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{
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return Get(ix, iy, iz);
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}
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// Voxel
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xyz.ix = ix;
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xyz.iy = iy;
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xyz.iz = iz;
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// Take the value
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const Standard_Byte value = ((iXYZBool*)mySubVoxels)->Find(xyz);
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// Return data
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return (value & gbits[ioct]) ? Standard_True : Standard_False;
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}
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Standard_Boolean Voxel_OctBoolDS::IsSplit(const Standard_Integer ix, const Standard_Integer iy, const Standard_Integer iz) const
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{
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if (!mySubVoxels)
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return Standard_False;
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// Voxel
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xyz.ix = ix;
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xyz.iy = iy;
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xyz.iz = iz;
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return ((iXYZBool*)mySubVoxels)->IsBound(xyz);
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}
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void Voxel_OctBoolDS::Split(const Standard_Integer ix, const Standard_Integer iy, const Standard_Integer iz)
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{
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// Voxel
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xyz.ix = ix;
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xyz.iy = iy;
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xyz.iz = iz;
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if (mySubVoxels)
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{
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if (!((iXYZBool*)mySubVoxels)->IsBound(xyz))
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{
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((iXYZBool*)mySubVoxels)->Bind(xyz, 0);
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}
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}
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else
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{
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mySubVoxels = (Standard_Address) new iXYZBool;
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((iXYZBool*)mySubVoxels)->Bind(xyz, 0);
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}
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}
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void Voxel_OctBoolDS::UnSplit(const Standard_Integer ix, const Standard_Integer iy, const Standard_Integer iz)
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{
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if (!mySubVoxels)
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return;
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// Voxel
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xyz.ix = ix;
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xyz.iy = iy;
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xyz.iz = iz;
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if (((iXYZBool*)mySubVoxels)->IsBound(xyz))
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{
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((iXYZBool*)mySubVoxels)->UnBind(xyz);
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}
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}
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void Voxel_OctBoolDS::OptimizeMemory()
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{
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if (!mySubVoxels)
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return;
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Standard_Byte value;
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TColStd_ListOfInteger ixs, iys, izs, values;
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iXYZBool::Iterator itr(*((iXYZBool*)mySubVoxels));
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for (; itr.More(); itr.Next())
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{
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value = itr.Value();
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if (value == 0 || value == 255)
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{
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xyz = itr.Key();
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ixs.Append(xyz.ix);
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iys.Append(xyz.iy);
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izs.Append(xyz.iz);
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values.Append((Standard_Integer)value);
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}
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}
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TColStd_ListIteratorOfListOfInteger itrix(ixs), itriy(iys), itriz(izs), itrvalues(values);
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for (; itrix.More(); itrix.Next(), itriy.Next(), itriz.Next(), itrvalues.Next())
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{
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const Standard_Integer ix = itrix.Value();
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const Standard_Integer iy = itriy.Value();
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const Standard_Integer iz = itriz.Value();
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const Standard_Integer value = itrvalues.Value();
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Set(ix, iy, iz, (value ? Standard_True : Standard_False));
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UnSplit(ix, iy, iz);
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}
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// If the map is empty, release it.
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if (((iXYZBool*)mySubVoxels)->IsEmpty())
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{
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delete (iXYZBool*)mySubVoxels;
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mySubVoxels = 0;
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}
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}
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