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This commit is contained in:
BobSong
2025-11-10 00:08:26 +08:00
parent 4059c207c0
commit 76f80db694
2814 changed files with 436400 additions and 178 deletions
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15
Assets/Obi/Scripts/Common/Backends/Burst/Constraints/Density/Kernels/CohesionKernel.cs Normal file
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#if (OBI_BURST && OBI_MATHEMATICS && OBI_COLLECTIONS)
using System;
using Unity.Mathematics;
namespace Obi
{
public struct CohesionKernel
{
public float W(float r, float h)
{
return math.cos(math.min(r, h) * 3 * math.PI / (2 * h));
}
}
}
#endif

11
Assets/Obi/Scripts/Common/Backends/Burst/Constraints/Density/Kernels/CohesionKernel.cs.meta Normal file
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36
Assets/Obi/Scripts/Common/Backends/Burst/Constraints/Density/Kernels/Poly6Kernel.cs Normal file
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#if (OBI_BURST && OBI_MATHEMATICS && OBI_COLLECTIONS)
using System;
using Unity.Mathematics;
namespace Obi
{
public struct Poly6Kernel
{
public float norm;
public bool norm2D;
public Poly6Kernel(bool norm2D)
{
this.norm2D = norm2D;
if (norm2D)
norm = 4.0f / math.PI;
else
norm = 315.0f / (64.0f * math.PI);
}
public float W(float r, float h)
{
float h2 = h * h;
float h4 = h2 * h2;
float h8 = h4 * h4;
float rl = math.min(r, h);
float hr = h2 - rl * rl;
if (norm2D)
return norm / h8 * hr * hr * hr;
return norm / (h8 * h) * hr * hr * hr;
}
}
}
#endif

11
Assets/Obi/Scripts/Common/Backends/Burst/Constraints/Density/Kernels/Poly6Kernel.cs.meta Normal file
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35
Assets/Obi/Scripts/Common/Backends/Burst/Constraints/Density/Kernels/SpikyKernel.cs Normal file
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#if (OBI_BURST && OBI_MATHEMATICS && OBI_COLLECTIONS)
using System;
using Unity.Mathematics;
namespace Obi
{
public struct SpikyKernel
{
public float norm;
public bool norm2D;
public SpikyKernel(bool norm2D)
{
this.norm2D = norm2D;
if (norm2D)
norm = -30.0f / math.PI;
else
norm = -45.0f / math.PI;
}
public float W(float r, float h)
{
float h2 = h * h;
float h4 = h2 * h2;
float rl = math.min(r, h);
float hr = h - rl;
if (norm2D)
return norm / (h4 * h) * hr * hr;
return norm / (h4 * h2) * hr * hr;
}
}
}
#endif

11
Assets/Obi/Scripts/Common/Backends/Burst/Constraints/Density/Kernels/SpikyKernel.cs.meta Normal file
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