// Copyright 2018 Blender Foundation. All rights reserved.
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software Foundation,
// Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// Author: Sergey Sharybin

#ifdef _MSC_VER
#  include <iso646.h>
#endif

#include "internal/opensubdiv_converter_internal.h"

#include <opensubdiv/sdc/crease.h>
#include <cassert>

namespace opensubdiv_capi {

OpenSubdiv::Sdc::SchemeType getSchemeTypeFromCAPI(OpenSubdiv_SchemeType type) {
  switch (type) {
    case OSD_SCHEME_BILINEAR:
      return OpenSubdiv::Sdc::SCHEME_BILINEAR;
    case OSD_SCHEME_CATMARK:
      return OpenSubdiv::Sdc::SCHEME_CATMARK;
    case OSD_SCHEME_LOOP:
      return OpenSubdiv::Sdc::SCHEME_LOOP;
  }
  assert(!"Unknown scheme type passed via C-API");
  return OpenSubdiv::Sdc::SCHEME_CATMARK;
}

OpenSubdiv::Sdc::Options::FVarLinearInterpolation
getFVarLinearInterpolationFromCAPI(
    OpenSubdiv_FVarLinearInterpolation linear_interpolation) {
  typedef OpenSubdiv::Sdc::Options Options;
  switch (linear_interpolation) {
    case OSD_FVAR_LINEAR_INTERPOLATION_NONE:
      return Options::FVAR_LINEAR_NONE;
    case OSD_FVAR_LINEAR_INTERPOLATION_CORNERS_ONLY:
      return Options::FVAR_LINEAR_CORNERS_ONLY;
    case OSD_FVAR_LINEAR_INTERPOLATION_BOUNDARIES:
      return Options::FVAR_LINEAR_BOUNDARIES;
    case OSD_FVAR_LINEAR_INTERPOLATION_ALL:
      return Options::FVAR_LINEAR_ALL;
  }
  assert(!"Unknown fvar linear interpolation passed via C-API");
  return Options::FVAR_LINEAR_NONE;
}

float getCompatibleEdgeSharpness(const OpenSubdiv_Converter* converter,
                                 int edge_index) {
  if (converter->getNumEdgeFaces(converter, edge_index) == 2) {
    return converter->getEdgeSharpness(converter, edge_index);
  } else {
    return OpenSubdiv::Sdc::Crease::SHARPNESS_INFINITE;
  }
}

}  // namespace opensubdiv_capi