Initial commit.

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

@@ -0,0 +1,41 @@
+// Copyright 2009-2021 Intel Corporation
+// SPDX-License-Identifier: Apache-2.0
+
+#include "catmullclark_coefficients.h"
+
+
+namespace embree
+{
+  CatmullClarkPrecomputedCoefficients CatmullClarkPrecomputedCoefficients::table;
+
+  CatmullClarkPrecomputedCoefficients::CatmullClarkPrecomputedCoefficients()
+  {
+    /* precompute cosf(2.0f*M_PI/n) */
+    for (size_t n=0; n<=MAX_RING_FACE_VALENCE; n++)
+      table_cos_2PI_div_n[n] = set_cos_2PI_div_n(n);
+
+    /* precompute limit tangents coefficients */
+    for (size_t n=0; n<=MAX_RING_FACE_VALENCE; n++)
+    {
+      table_limittangent_a[n] = new float[n];
+      table_limittangent_b[n] = new float[n];
+
+      for (size_t i=0; i<n; i++) {
+        table_limittangent_a[n][i] = set_limittangent_a(i,n);
+        table_limittangent_b[n][i] = set_limittangent_b(i,n);
+      }      
+    }
+
+    for (size_t n=0; n<=MAX_RING_FACE_VALENCE; n++)
+      table_limittangent_c[n] = set_limittangent_c(n);
+  }
+
+  CatmullClarkPrecomputedCoefficients::~CatmullClarkPrecomputedCoefficients()
+  {
+    for (size_t n=0; n<=MAX_RING_FACE_VALENCE; n++)
+    {
+      delete [] table_limittangent_a[n];
+      delete [] table_limittangent_b[n];
+    }
+  }
+}