30 lines
721 B
C++
30 lines
721 B
C++
// Copyright 2009-2021 Intel Corporation
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// SPDX-License-Identifier: Apache-2.0
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#include "bspline_curve.h"
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namespace embree
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{
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PrecomputedBSplineBasis::PrecomputedBSplineBasis(int dj)
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{
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for (size_t i=1; i<=N; i++)
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{
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for (size_t j=0; j<=N; j++)
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{
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const float u = float(j+dj)/float(i);
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const Vec4f f = BSplineBasis::eval(u);
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c0[i][j] = f.x;
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c1[i][j] = f.y;
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c2[i][j] = f.z;
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c3[i][j] = f.w;
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const Vec4f d = BSplineBasis::derivative(u);
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d0[i][j] = d.x;
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d1[i][j] = d.y;
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d2[i][j] = d.z;
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d3[i][j] = d.w;
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}
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}
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}
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PrecomputedBSplineBasis bspline_basis0(0);
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PrecomputedBSplineBasis bspline_basis1(1);
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}
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