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izenynn
2025-02-17 21:05:45 +01:00
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lib/glm/gtx/spline.inl Normal file
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/// @ref gtx_spline
/// @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