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#include "UnityPrefix.h"
#include "denseclip.h"
#include "Runtime/Math/Simd/math.h"
namespace mecanim
{
namespace animation
{
static void BlendArray(const float* lhs, const float* rhs, size_t size, float t, float* output)
{
for (int i=0;i<size;i++)
output[i] = math::lerp(lhs[i], rhs[i], t);
}
static void PrepareBlendValues (const DenseClip& clip, float time, float*& lhs, float*& rhs, float& u)
{
time -= clip.m_BeginTime;
float index;
u = math::modf(time * clip.m_SampleRate, index);
int lhsIndex = (int)index;
int rhsIndex = lhsIndex + 1;
lhsIndex = math::maximum(0, lhsIndex);
lhsIndex = math::minimum(clip.m_FrameCount-1, lhsIndex);
rhsIndex = math::maximum(0, rhsIndex);
rhsIndex = math::minimum(clip.m_FrameCount-1, rhsIndex);
lhs = const_cast<float*> (&clip.m_SampleArray[lhsIndex * clip.m_CurveCount]);
rhs = const_cast<float*> (&clip.m_SampleArray[rhsIndex * clip.m_CurveCount]);
}
void SampleClip (const DenseClip& clip, float time, float* output)
{
float u;
float* lhsPtr;
float* rhsPtr;
PrepareBlendValues(clip, time, lhsPtr, rhsPtr, u);
BlendArray(lhsPtr, rhsPtr, clip.m_CurveCount, u, output);
}
float SampleClipAtIndex (const DenseClip& clip, int curveIndex, float time)
{
float u;
float* lhsPtr;
float* rhsPtr;
PrepareBlendValues(clip, time, lhsPtr, rhsPtr, u);
return math::lerp(lhsPtr[curveIndex], rhsPtr[curveIndex], u);
}
// Creation & Destruction
void DestroyDenseClip (DenseClip& clip, memory::Allocator& alloc)
{
alloc.Deallocate(clip.m_SampleArray);
}
}
}
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