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///////////////////////////////////////////////////////////////////////////////////////////////////// OpenGL Mathematics Copyright (c) 2005 - 2013 G-Truc Creation (www.g-truc.net)///////////////////////////////////////////////////////////////////////////////////////////////////// Created : 2007-01-25// Updated : 2009-02-19// Licence : This source is under MIT License// File : glm/gtx/spline.inl///////////////////////////////////////////////////////////////////////////////////////////////////
namespace glm{
template <typename genType>GLM_FUNC_QUALIFIER genType catmullRom( genType const & v1, genType const & v2, genType const & v3, genType const & v4, typename genType::value_type const & s){ typename genType::value_type s1 = s; typename genType::value_type s2 = pow2(s); typename genType::value_type s3 = pow3(s);
typename genType::value_type f1 = -s3 + typename genType::value_type(2) * s2 - s; typename genType::value_type f2 = typename genType::value_type(3) * s3 - typename genType::value_type(5) * s2 + typename genType::value_type(2); typename genType::value_type f3 = typename genType::value_type(-3) * s3 + typename genType::value_type(4) * s2 + s; typename genType::value_type f4 = s3 - s2;
return (f1 * v1 + f2 * v2 + f3 * v3 + f4 * v4) / typename genType::value_type(2);
}
template <typename genType>GLM_FUNC_QUALIFIER genType hermite( genType const & v1, genType const & t1, genType const & v2, genType const & t2, typename genType::value_type const & s){ typename genType::value_type s1 = s; typename genType::value_type s2 = pow2(s); typename genType::value_type s3 = pow3(s);
typename genType::value_type f1 = typename genType::value_type(2) * s3 - typename genType::value_type(3) * s2 + typename genType::value_type(1); typename genType::value_type f2 = typename genType::value_type(-2) * s3 + typename genType::value_type(3) * s2; typename genType::value_type f3 = s3 - typename genType::value_type(2) * s2 + s; typename genType::value_type f4 = s3 - s2;
return f1 * v1 + f2 * v2 + f3 * t1 + f4 * t2;}
template <typename genType>GLM_FUNC_QUALIFIER genType cubic( genType const & v1, genType const & v2, genType const & v3, genType const & v4, typename genType::value_type const & s){ return ((v1 * s + v2) * s + v3) * s + v4;}
}//namespace glm
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