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Moved normal encoding logic.

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This commit is contained in:
David Williams 2014-07-22 23:48:18 +02:00
parent 9b84c9d07d
commit dd5e34bc92
2 changed files with 17 additions and 30 deletions
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14
library/PolyVoxCore/include/PolyVoxCore/MarchingCubesSurfaceExtractor.h
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@ -64,6 +64,20 @@ namespace PolyVox
return result; return result;
} }
inline uint16_t encodeNormal(const Vector3DFloat& normal)
{
Vector3DFloat v3dNormal = normal;
v3dNormal += Vector3DFloat(1.0f, 1.0f, 1.0f);
uint16_t encodedX = static_cast<uint16_t>(roundToNearestInteger(v3dNormal.getX() * 15.5f));
uint16_t encodedY = static_cast<uint16_t>(roundToNearestInteger(v3dNormal.getY() * 15.5f));
uint16_t encodedZ = static_cast<uint16_t>(roundToNearestInteger(v3dNormal.getZ() * 15.5f));
POLYVOX_ASSERT(encodedX < 32, "Encoded value out of range");
POLYVOX_ASSERT(encodedY < 32, "Encoded value out of range");
POLYVOX_ASSERT(encodedZ < 32, "Encoded value out of range");
uint16_t encodedNormal = (encodedX << 10) | (encodedY << 5) | encodedZ;
return encodedNormal;
}
/// Decodes a normal from a MarchingCubesVertex /// Decodes a normal from a MarchingCubesVertex
inline Vector3DFloat decode(const uint16_t encodedNormal) inline Vector3DFloat decode(const uint16_t encodedNormal)
{ {

33
library/PolyVoxCore/include/PolyVoxCore/MarchingCubesSurfaceExtractor.inl
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@ -451,21 +451,12 @@ namespace PolyVox
v3dNormal.normalise(); v3dNormal.normalise();
} }
v3dNormal += Vector3DFloat(1.0f, 1.0f, 1.0f);
uint16_t encodedX = static_cast<uint16_t>(roundToNearestInteger(v3dNormal.getX() * 15.5f));
uint16_t encodedY = static_cast<uint16_t>(roundToNearestInteger(v3dNormal.getY() * 15.5f));
uint16_t encodedZ = static_cast<uint16_t>(roundToNearestInteger(v3dNormal.getZ() * 15.5f));
POLYVOX_ASSERT(encodedX < 32, "Encoded value out of range");
POLYVOX_ASSERT(encodedY < 32, "Encoded value out of range");
POLYVOX_ASSERT(encodedZ < 32, "Encoded value out of range");
uint16_t encodedNormal = (encodedX << 10) | (encodedY << 5) | encodedZ;
// Allow the controller to decide how the material should be derived from the voxels. // Allow the controller to decide how the material should be derived from the voxels.
const typename VolumeType::VoxelType uMaterial = m_controller.blendMaterials(v000, v100, fInterp); const typename VolumeType::VoxelType uMaterial = m_controller.blendMaterials(v000, v100, fInterp);
MarchingCubesVertex<typename VolumeType::VoxelType> surfaceVertex; MarchingCubesVertex<typename VolumeType::VoxelType> surfaceVertex;
surfaceVertex.encodedPosition = v3dScaledPosition; surfaceVertex.encodedPosition = v3dScaledPosition;
surfaceVertex.encodedNormal = encodedNormal; surfaceVertex.encodedNormal = encodeNormal(v3dNormal);
surfaceVertex.data = uMaterial; surfaceVertex.data = uMaterial;
const uint32_t uLastVertexIndex = m_meshCurrent->addVertex(surfaceVertex); const uint32_t uLastVertexIndex = m_meshCurrent->addVertex(surfaceVertex);
@ -494,21 +485,12 @@ namespace PolyVox
v3dNormal.normalise(); v3dNormal.normalise();
} }
v3dNormal += Vector3DFloat(1.0f, 1.0f, 1.0f);
uint16_t encodedX = static_cast<uint16_t>(roundToNearestInteger(v3dNormal.getX() * 15.5f));
uint16_t encodedY = static_cast<uint16_t>(roundToNearestInteger(v3dNormal.getY() * 15.5f));
uint16_t encodedZ = static_cast<uint16_t>(roundToNearestInteger(v3dNormal.getZ() * 15.5f));
POLYVOX_ASSERT(encodedX < 32, "Encoded value out of range");
POLYVOX_ASSERT(encodedY < 32, "Encoded value out of range");
POLYVOX_ASSERT(encodedZ < 32, "Encoded value out of range");
uint16_t encodedNormal = (encodedX << 10) | (encodedY << 5) | encodedZ;
// Allow the controller to decide how the material should be derived from the voxels. // Allow the controller to decide how the material should be derived from the voxels.
const typename VolumeType::VoxelType uMaterial = m_controller.blendMaterials(v000, v010, fInterp); const typename VolumeType::VoxelType uMaterial = m_controller.blendMaterials(v000, v010, fInterp);
MarchingCubesVertex<typename VolumeType::VoxelType> surfaceVertex; MarchingCubesVertex<typename VolumeType::VoxelType> surfaceVertex;
surfaceVertex.encodedPosition = v3dScaledPosition; surfaceVertex.encodedPosition = v3dScaledPosition;
surfaceVertex.encodedNormal = encodedNormal; surfaceVertex.encodedNormal = encodeNormal(v3dNormal);
surfaceVertex.data = uMaterial; surfaceVertex.data = uMaterial;
uint32_t uLastVertexIndex = m_meshCurrent->addVertex(surfaceVertex); uint32_t uLastVertexIndex = m_meshCurrent->addVertex(surfaceVertex);
@ -536,21 +518,12 @@ namespace PolyVox
v3dNormal.normalise(); v3dNormal.normalise();
} }
v3dNormal += Vector3DFloat(1.0f, 1.0f, 1.0f);
uint16_t encodedX = static_cast<uint16_t>(roundToNearestInteger(v3dNormal.getX() * 15.5f));
uint16_t encodedY = static_cast<uint16_t>(roundToNearestInteger(v3dNormal.getY() * 15.5f));
uint16_t encodedZ = static_cast<uint16_t>(roundToNearestInteger(v3dNormal.getZ() * 15.5f));
POLYVOX_ASSERT(encodedX < 32, "Encoded value out of range");
POLYVOX_ASSERT(encodedY < 32, "Encoded value out of range");
POLYVOX_ASSERT(encodedZ < 32, "Encoded value out of range");
uint16_t encodedNormal = (encodedX << 10) | (encodedY << 5) | encodedZ;
// Allow the controller to decide how the material should be derived from the voxels. // Allow the controller to decide how the material should be derived from the voxels.
const typename VolumeType::VoxelType uMaterial = m_controller.blendMaterials(v000, v001, fInterp); const typename VolumeType::VoxelType uMaterial = m_controller.blendMaterials(v000, v001, fInterp);
MarchingCubesVertex<typename VolumeType::VoxelType> surfaceVertex; MarchingCubesVertex<typename VolumeType::VoxelType> surfaceVertex;
surfaceVertex.encodedPosition = v3dScaledPosition; surfaceVertex.encodedPosition = v3dScaledPosition;
surfaceVertex.encodedNormal = encodedNormal; surfaceVertex.encodedNormal = encodeNormal(v3dNormal);
surfaceVertex.data = uMaterial; surfaceVertex.data = uMaterial;
const uint32_t uLastVertexIndex = m_meshCurrent->addVertex(surfaceVertex); const uint32_t uLastVertexIndex = m_meshCurrent->addVertex(surfaceVertex);