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Replaced constants with functions for type traits.

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This commit is contained in:
unknown
2012-02-06 17:51:37 +01:00
parent 1ab1d9bed3
commit c483b44a41
18 changed files with 125 additions and 292 deletions
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6
library/PolyVoxCore/include/PolyVoxCore/AStarPathfinder.inl
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@ -37,18 +37,18 @@ namespace PolyVox
return false;
}
if(VoxelTypeTraits<VoxelType>::HasDensity)
if(VoxelTypeTraits<VoxelType>::hasDensity())
{
//and if their density is above the threshold.
VoxelType voxel = volData->getVoxelAt(v3dPos);
VoxelType::DensityType tThreshold = (VoxelTypeTraits<VoxelType>::MinDensity + VoxelTypeTraits<VoxelType>::MaxDensity) / 2;
VoxelType::DensityType tThreshold = (VoxelTypeTraits<VoxelType>::minDensity() + VoxelTypeTraits<VoxelType>::maxDensity()) / 2;
if(voxel.getDensity() >= tThreshold)
{
return false;
}
}
if(VoxelTypeTraits<VoxelType>::HasMaterial)
if(VoxelTypeTraits<VoxelType>::hasMaterial())
{
//and if their material is not zero.
VoxelType voxel = volData->getVoxelAt(v3dPos);

62
library/PolyVoxCore/include/PolyVoxCore/Density.h
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@ -31,6 +31,9 @@ freely, subject to the following restrictions:
#include <cassert>
#include <limits>
#undef min
#undef max
namespace PolyVox
{
///This class represents a voxel storing only a density.
@ -45,8 +48,11 @@ namespace PolyVox
///
/// \sa Material, MaterialDensityPair
////////////////////////////////////////////////////////////////////////////////
// int32_t template parameter is a dummy, required as the compiler expects to be able to declare an
// instance of VoxelType::MaterialType without knowing that VoxelType doesn't actually have a material.
template <typename Type>
class Density : public Voxel<Type, uint8_t>
class Density : public Voxel<Type, int32_t>
{
public:
//We expose DensityType and MaterialType in this way so that, when code is
@ -54,7 +60,7 @@ namespace PolyVox
//using code such as 'VoxelType::DensityType value = voxel.getDensity()'
//or 'VoxelType::MaterialType value = voxel.getMaterial()'.
typedef Type DensityType;
typedef uint8_t MaterialType; //Shouldn't define this one...
typedef int32_t MaterialType; //Shouldn't define this one...
Density() : m_uDensity(0) {}
Density(DensityType uDensity) : m_uDensity(uDensity) {}
@ -75,8 +81,8 @@ namespace PolyVox
void setDensity(DensityType uDensity) { m_uDensity = uDensity; }
//void setMaterial(MaterialType /*uMaterial*/) { assert(false); } //Cannot set material on voxel of type Density
//static DensityType getMaxDensity() throw() { return (std::numeric_limits<DensityType>::max)(); }
//static DensityType getMinDensity() throw() { return (std::numeric_limits<DensityType>::min)(); }
//static DensityType getmaxDensity()() throw() { return (std::numeric_limits<DensityType>::max)(); }
//static DensityType getminDensity()() throw() { return (std::numeric_limits<DensityType>::min)(); }
static DensityType getThreshold() throw() { return (std::numeric_limits<DensityType>::max)() / 2; }
private:
@ -103,60 +109,60 @@ namespace PolyVox
class VoxelTypeTraits< DensityI8 >
{
public:
const static bool HasDensity;
const static bool HasMaterial;
const static DensityI8::DensityType MinDensity;
const static DensityI8::DensityType MaxDensity;
static bool hasDensity() { return true; }
static bool hasMaterial() { return false; }
static DensityI8::DensityType minDensity() { return -std::numeric_limits<DensityI8::DensityType>::max(); }
static DensityI8::DensityType maxDensity() { return std::numeric_limits<DensityI8::DensityType>::max(); }
};
template<>
class VoxelTypeTraits< DensityU8 >
{
public:
const static bool HasDensity;
const static bool HasMaterial;
const static DensityU8::DensityType MinDensity;
const static DensityU8::DensityType MaxDensity;
static bool hasDensity() { return true; }
static bool hasMaterial() { return false; }
static DensityU8::DensityType minDensity() { return std::numeric_limits<DensityU8::DensityType>::min(); }
static DensityU8::DensityType maxDensity() { return std::numeric_limits<DensityU8::DensityType>::max(); }
};
template<>
class VoxelTypeTraits< DensityI16 >
{
public:
const static bool HasDensity;
const static bool HasMaterial;
const static DensityI16::DensityType MinDensity;
const static DensityI16::DensityType MaxDensity;
static bool hasDensity() { return true; }
static bool hasMaterial() { return false; }
static DensityI16::DensityType minDensity() { return -std::numeric_limits<DensityI16::DensityType>::max(); }
static DensityI16::DensityType maxDensity() { return std::numeric_limits<DensityI16::DensityType>::max(); }
};
template<>
class VoxelTypeTraits< DensityU16 >
{
public:
const static bool HasDensity;
const static bool HasMaterial;
const static DensityU16::DensityType MinDensity;
const static DensityU16::DensityType MaxDensity;
static bool hasDensity() { return true; }
static bool hasMaterial() { return false; }
static DensityU16::DensityType minDensity() { return std::numeric_limits<DensityU16::DensityType>::min(); }
static DensityU16::DensityType maxDensity() { return std::numeric_limits<DensityU16::DensityType>::max(); }
};
template<>
class VoxelTypeTraits< DensityFloat >
{
public:
const static bool HasDensity;
const static bool HasMaterial;
const static DensityFloat::DensityType MinDensity;
const static DensityFloat::DensityType MaxDensity;
static bool hasDensity() { return true; }
static bool hasMaterial() { return false; }
static DensityFloat::DensityType minDensity() { return -std::numeric_limits<DensityFloat::DensityType>::max(); }
static DensityFloat::DensityType maxDensity() { return std::numeric_limits<DensityFloat::DensityType>::max(); }
};
template<>
class VoxelTypeTraits< DensityDouble >
{
public:
const static bool HasDensity;
const static bool HasMaterial;
const static DensityDouble::DensityType MinDensity;
const static DensityDouble::DensityType MaxDensity;
static bool hasDensity() { return true; }
static bool hasMaterial() { return false; }
static DensityDouble::DensityType minDensity() { return -std::numeric_limits<DensityDouble::DensityType>::max(); }
static DensityDouble::DensityType maxDensity() { return std::numeric_limits<DensityDouble::DensityType>::max(); }
};
}

39
library/PolyVoxCore/include/PolyVoxCore/Material.h
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@ -45,15 +45,18 @@ namespace PolyVox
///
/// \sa Density, MaterialDensityPair
////////////////////////////////////////////////////////////////////////////////
// int32_t template parameter is a dummy, required as the compiler expects to be able to declare an
// instance of VoxelType::DensityType without knowing that VoxelType doesn't actually have a density.
template <typename Type>
class Material : public Voxel<uint8_t, Type>
class Material : public Voxel<int32_t, Type>
{
public:
//We expose DensityType and MaterialType in this way so that, when code is
//templatised on voxel type, it can determine the underlying storage type
//using code such as 'VoxelType::DensityType value = voxel.getDensity()'
//or 'VoxelType::MaterialType value = voxel.getMaterial()'.
typedef uint8_t DensityType; //Shouldn't define this one...
typedef int32_t DensityType;
typedef Type MaterialType;
Material() : m_uMaterial(0) {}
@ -74,12 +77,12 @@ namespace PolyVox
//We don't actually have a density, so make one up based on the material.
if(m_uMaterial == 0)
{
//return getMinDensity();
//return getminDensity()();
return 0;
}
else
{
//return getMaxDensity();
//return getmaxDensity()();
return 2;
}
}
@ -89,8 +92,8 @@ namespace PolyVox
void setDensity(DensityType /*uDensity*/) { assert(false); } //Cannot set density on voxel of type Material
void setMaterial(MaterialType uMaterial) { m_uMaterial = uMaterial; }
//static DensityType getMaxDensity() throw() { return 2; }
//static DensityType getMinDensity() throw() { return 0; }
//static DensityType getmaxDensity()() throw() { return 2; }
//static DensityType getminDensity()() throw() { return 0; }
static DensityType getThreshold() throw() { return 1; }
private:
@ -111,30 +114,30 @@ namespace PolyVox
class VoxelTypeTraits< MaterialU8 >
{
public:
const static bool HasDensity;
const static bool HasMaterial;
const static MaterialU8::DensityType MinDensity;
const static MaterialU8::DensityType MaxDensity;
static bool hasDensity() { return false; }
static bool hasMaterial() { return true; }
static int minDensity() { assert(false); return 0; }
static int maxDensity() { assert(false); return 0; }
};
template<>
class VoxelTypeTraits< MaterialU16 >
{
public:
const static bool HasDensity;
const static bool HasMaterial;
const static MaterialU16::DensityType MinDensity;
const static MaterialU16::DensityType MaxDensity;
static bool hasDensity() { return false; }
static bool hasMaterial() { return true; }
static int minDensity() { assert(false); return 0; }
static int maxDensity() { assert(false); return 0; }
};
template<>
class VoxelTypeTraits< MaterialU32 >
{
public:
const static bool HasDensity;
const static bool HasMaterial;
const static MaterialU32::DensityType MinDensity;
const static MaterialU32::DensityType MaxDensity;
static bool hasDensity() { return false; }
static bool hasMaterial() { return true; }
static int minDensity() { assert(false); return 0; }
static int maxDensity() { assert(false); return 0; }
};
}

20
library/PolyVoxCore/include/PolyVoxCore/MaterialDensityPair.h
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@ -74,8 +74,8 @@ namespace PolyVox
void setDensity(DensityType uDensity) { m_uDensity = uDensity; }
void setMaterial(MaterialType uMaterial) { m_uMaterial = uMaterial; }
//static DensityType getMaxDensity() throw() { return (0x01 << NoOfDensityBits) - 1; }
//static DensityType getMinDensity() throw() { return 0; }
//static DensityType getmaxDensity()() throw() { return (0x01 << NoOfDensityBits) - 1; }
//static DensityType getminDensity()() throw() { return 0; }
static DensityType getThreshold() throw() {return 0x01 << (NoOfDensityBits - 1);}
private:
@ -90,20 +90,20 @@ namespace PolyVox
class VoxelTypeTraits< MaterialDensityPair44 >
{
public:
const static bool HasDensity;
const static bool HasMaterial;
const static MaterialDensityPair44::DensityType MinDensity;
const static MaterialDensityPair44::DensityType MaxDensity;
static bool hasDensity() { return true; }
static bool hasMaterial() { return true; }
static MaterialDensityPair44::DensityType minDensity() { return 0; }
static MaterialDensityPair44::DensityType maxDensity() { return 15; }
};
template<>
class VoxelTypeTraits< MaterialDensityPair88 >
{
public:
const static bool HasDensity;
const static bool HasMaterial;
const static MaterialDensityPair88::DensityType MinDensity;
const static MaterialDensityPair88::DensityType MaxDensity;
static bool hasDensity() { return true; }
static bool hasMaterial() { return true; }
static MaterialDensityPair88::DensityType minDensity() { return 0; }
static MaterialDensityPair88::DensityType maxDensity() { return 255; }
};
}

2
library/PolyVoxCore/include/PolyVoxCore/SurfaceExtractor.h
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@ -36,7 +36,7 @@ namespace PolyVox
class SurfaceExtractor
{
public:
SurfaceExtractor(VolumeType<VoxelType>* volData, Region region, SurfaceMesh<PositionMaterialNormal>* result, typename VoxelType::DensityType tThreshold = (VoxelTypeTraits<VoxelType>::MinDensity + VoxelTypeTraits<VoxelType>::MaxDensity) / 2);
SurfaceExtractor(VolumeType<VoxelType>* volData, Region region, SurfaceMesh<PositionMaterialNormal>* result, typename VoxelType::DensityType tThreshold = (VoxelTypeTraits<VoxelType>::minDensity() + VoxelTypeTraits<VoxelType>::maxDensity()) / 2);
void execute();

8
library/PolyVoxCore/include/PolyVoxCore/SurfaceExtractor.inl
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@ -433,7 +433,7 @@ namespace PolyVox
const VoxelType v100 = m_sampVolume.getVoxel();
const Vector3DFloat n100 = computeCentralDifferenceGradient(m_sampVolume);
//float fInterp = static_cast<float>(v100.getDensity() - VoxelType::getMinDensity()) / static_cast<float>(VoxelType::getMaxDensity() - VoxelType::getMinDensity());
//float fInterp = static_cast<float>(v100.getDensity() - VoxelType::getminDensity()()) / static_cast<float>(VoxelType::getmaxDensity()() - VoxelType::getminDensity()());
float fInterp = static_cast<float>(m_tThreshold - v000.getDensity()) / static_cast<float>(v100.getDensity() - v000.getDensity());
//fInterp = 0.5f;
@ -447,7 +447,7 @@ namespace PolyVox
//material IDs does not make sense). We take the largest, so that if we are working on a material-only
//volume we get the one which is non-zero. Both materials can be non-zero if our volume has a density component.
uint32_t uMaterial = 0;
if(VoxelTypeTraits<VoxelType>::HasMaterial)
if(VoxelTypeTraits<VoxelType>::hasMaterial())
{
uMaterial = (std::max)(v000.getMaterial(), v100.getMaterial());
}
@ -477,7 +477,7 @@ namespace PolyVox
//material IDs does not make sense). We take the largest, so that if we are working on a material-only
//volume we get the one which is non-zero. Both materials can be non-zero if our volume has a density component.
uint32_t uMaterial = 0;
if(VoxelTypeTraits<VoxelType>::HasMaterial)
if(VoxelTypeTraits<VoxelType>::hasMaterial())
{
uMaterial = (std::max)(v000.getMaterial(), v010.getMaterial());
}
@ -507,7 +507,7 @@ namespace PolyVox
//material IDs does not make sense). We take the largest, so that if we are working on a material-only
//volume we get the one which is non-zero. Both materials can be non-zero if our volume has a density component.
uint32_t uMaterial = 0;
if(VoxelTypeTraits<VoxelType>::HasMaterial)
if(VoxelTypeTraits<VoxelType>::hasMaterial())
{
uMaterial = (std::max)(v000.getMaterial(), v001.getMaterial());
}

15
library/PolyVoxCore/include/PolyVoxCore/Voxel.h
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@ -56,7 +56,7 @@ namespace PolyVox
// Various properties of the voxel types can be expressed via types traits, similar to the way std::numeric_limits is implemented.
// This has some advantages compared to storing the properties directly in the voxel class. For example, by using traits it is possible
// to also apply these properties to primative types which might be desirable (the Volume classes do accept primative types as template
// parameters). Also, properties such as MinDensity and MaxDensity would be difficult to represent though class members because they
// parameters). Also, properties such as minDensity() and maxDensity() would be difficult to represent though class members because they
// depend ont the type (float has a very different range from int8_t for example).
//
// The properties are currently exposed as constants because we need access to them at compile time. Ideally we would like to make them
@ -68,10 +68,15 @@ namespace PolyVox
class VoxelTypeTraits
{
public:
const static bool HasDensity;
const static bool HasMaterial;
const static typename Type::DensityType MinDensity;
const static typename Type::DensityType MaxDensity;
static bool hasDensity() { return false; }
static bool hasMaterial() { return false; }
// These default implementations return an int32_t rather than void so that the result can be
// assigned to a variable for all voxel types (even those without density coponents). Calls
// to these functions should be protected by calls to hasDensity(), but the compiler still
// needs to ensure the assignment is compilable even if hasDensity() returns false.
static int32_t minDensity() { assert(false); return 0; }
static int32_t maxDensity() { assert(false); return 0; }
};
}