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124 lines
3.4 KiB
124 lines
3.4 KiB
/////////////////////////////////////////////////////////////////////////////////////////////////// |
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// OpenGL Mathematics Copyright (c) 2005 - 2011 G-Truc Creation (www.g-truc.net) |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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// Created : 2005-12-30 |
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// Updated : 2008-09-29 |
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// Licence : This source is under MIT License |
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// File : glm/gtx/vector_angle.inl |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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namespace glm{ |
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namespace gtx{ |
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namespace vector_angle{ |
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template <typename genType> |
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GLM_FUNC_QUALIFIER typename genType::value_type angle |
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( |
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genType const & x, |
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genType const & y |
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) |
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{ |
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return degrees(acos(dot(x, y))); |
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} |
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//! \todo epsilon is hard coded to 0.01 |
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template <typename valType> |
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GLM_FUNC_QUALIFIER valType orientedAngle |
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( |
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detail::tvec2<valType> const & x, |
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detail::tvec2<valType> const & y |
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) |
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{ |
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valType Angle = acos(dot(x, y)); |
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valType c = cos(Angle); |
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valType s = sin(Angle); |
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detail::tvec2<valType> TransformedVector = detail::tvec2<valType>(c * y.x - s * y.y, s * y.x + c * y.y); |
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if(all(equalEpsilon(x, TransformedVector, valType(0.01)))) |
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return -glm::degrees(Angle); |
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else |
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return glm::degrees(Angle); |
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} |
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//! \todo epsilon is hard coded to 0.01 |
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template <typename valType> |
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GLM_FUNC_QUALIFIER valType orientedAngle |
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( |
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detail::tvec3<valType> const & x, |
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detail::tvec3<valType> const & y |
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) |
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{ |
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valType Angle = degrees(acos(dot(x, y))); |
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detail::tvec3<valType> TransformedVector = glm::gtx::rotate_vector::rotate(y, Angle, glm::core::function::geometric::cross(x, y)); |
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if(all(equalEpsilon(x, TransformedVector, valType(0.01)))) |
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return -Angle; |
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else |
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return Angle; |
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} |
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//! \todo epsilon is hard coded to 0.01 |
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template <typename valType> |
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GLM_FUNC_QUALIFIER valType orientedAngle |
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( |
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detail::tvec4<valType> const & x, |
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detail::tvec4<valType> const & y |
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) |
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{ |
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valType Angle = degrees(acos(dot(x, y))); |
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detail::tvec4<valType> TransformedVector = glm::gtx::rotate_vector::rotate(y, Angle, glm::core::function::geometric::cross(x, y)); |
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if(all(equalEpsilon(x, TransformedVector, valType(0.01)))) |
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return -Angle; |
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else |
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return Angle; |
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} |
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template <typename valType> |
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GLM_FUNC_QUALIFIER valType orientedAngleFromRef |
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( |
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detail::tvec2<valType> const & x, |
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detail::tvec2<valType> const & y, |
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detail::tvec3<valType> const & ref |
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) |
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{ |
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valType Angle = glm::acos(glm::dot(x, y)); |
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if(glm::dot(ref, detail::tvec3<valType>(glm::cross(x, y), valType(0))) < valType(0)) |
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return -glm::degrees(Angle); |
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else |
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return glm::degrees(Angle); |
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} |
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template <typename valType> |
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GLM_FUNC_QUALIFIER valType orientedAngleFromRef |
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( |
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detail::tvec3<valType> const & x, |
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detail::tvec3<valType> const & y, |
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detail::tvec3<valType> const & ref |
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) |
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{ |
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valType Angle = glm::acos(glm::dot(x, y)); |
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if(glm::dot(ref, glm::cross(x, y)) < valType(0)) |
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return -glm::degrees(Angle); |
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else |
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return glm::degrees(Angle); |
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} |
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template <typename valType> |
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GLM_FUNC_QUALIFIER valType orientedAngleFromRef |
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( |
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detail::tvec4<valType> const & x, |
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detail::tvec4<valType> const & y, |
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detail::tvec3<valType> const & ref |
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) |
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{ |
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valType Angle = glm::acos(glm::dot(x, y)); |
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if(glm::dot(ref, glm::cross(detail::tvec3<valType>(x), detail::tvec3<valType>(y))) < valType(0)) |
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return -glm::degrees(Angle); |
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else |
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return glm::degrees(Angle); |
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} |
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}//namespace vector_angle |
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}//namespace gtx |
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}//namespace glm
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