rotate.h

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// ======================================================================== //
// Copyright 2018-2019 Ingo Wald                                            //
//                                                                          //
// Licensed under the Apache License, Version 2.0 (the "License");          //
// you may not use this file except in compliance with the License.         //
// You may obtain a copy of the License at                                  //
//                                                                          //
//     http://www.apache.org/licenses/LICENSE-2.0                           //
//                                                                          //
// Unless required by applicable law or agreed to in writing, software      //
// distributed under the License is distributed on an "AS IS" BASIS,        //
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. //
// See the License for the specific language governing permissions and      //
// limitations under the License.                                           //
// ======================================================================== //
 
#pragma once
 
namespace owl {
  namespace common {
 
    inline __both__ float rotate(const float a, const float b)
    {
      float sum = a+b;
      return ((sum-1.f)<0.f)?(sum):(sum-1.f);
    }
 
    inline __both__ vec2f rotate(const vec2f a, const vec2f b) 
    { return vec2f(rotate(a.x,b.x),rotate(a.y,b.y)); }
  
  } // ::owl::common
} // ::owl