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Require that the voxel is a signed type

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This means that a static_cast<float> is no longer needed to calculate the
gradient. A static_assert provides user feedback.

The next step here would be to use a MarchingCubesController-type solution
to define the density value from a voxel. This way, also the gradient can
be stored.
This commit is contained in:
Matt Williams 2014-01-11 19:59:19 +00:00
parent af308cb187
commit 63f0def22f
1 changed files with 10 additions and 6 deletions
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16
library/PolyVoxCore/include/PolyVoxCore/DualContouringSurfaceExtractor.inl
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@ -27,6 +27,8 @@ freely, subject to the following restrictions:
#include "Impl/QEF.h"
#include <type_traits>
//BUG We will get duplucation of edges if the surface is along region boundaries
namespace PolyVox
@ -156,6 +158,8 @@ namespace PolyVox
template<typename VolumeType>
SurfaceMesh<PositionMaterialNormal> dualContouringSurfaceExtractor(VolumeType* volData, Region region)
{
static_assert(std::is_signed<typename VolumeType::VoxelType>::value, "Voxel type must be signed");
//Timer timer;
Timer totalTimer;
@ -205,13 +209,13 @@ namespace PolyVox
volSampler.movePositiveX(); //Increment x
const auto& voxel = volSampler.getVoxel();
const auto& voxel1px = static_cast<float>(volSampler.peekVoxel1px0py0pz());
const auto& voxel1py = static_cast<float>(volSampler.peekVoxel0px1py0pz());
const auto& voxel1pz = static_cast<float>(volSampler.peekVoxel0px0py1pz());
const auto& voxel1px = volSampler.peekVoxel1px0py0pz();
const auto& voxel1py = volSampler.peekVoxel0px1py0pz();
const auto& voxel1pz = volSampler.peekVoxel0px0py1pz();
const auto& voxel1nx = static_cast<float>(volSampler.peekVoxel1nx0py0pz());
const auto& voxel1ny = static_cast<float>(volSampler.peekVoxel0px1ny0pz());
const auto& voxel1nz = static_cast<float>(volSampler.peekVoxel0px0py1nz());
const auto& voxel1nx = volSampler.peekVoxel1nx0py0pz();
const auto& voxel1ny = volSampler.peekVoxel0px1ny0pz();
const auto& voxel1nz = volSampler.peekVoxel0px0py1nz();
const Vector3DFloat g(voxel1nx - voxel1px, voxel1ny - voxel1py, voxel1nz - voxel1pz);
std::pair<const typename VolumeType::VoxelType, Vector3DFloat> data(voxel, g);