Initial commit.

Framework/external/embree/kernels/subdiv/bspline_curve.cpp

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