Ritchie Cunningham
dc4dd650a4
this allows us to render a player controlled entity on screen using a 2D projection
41 lines
1.1 KiB
C++
41 lines
1.1 KiB
C++
#include "../common.hpp"
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#include "../ext/scalar_int_sized.hpp"
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#include "../ext/scalar_uint_sized.hpp"
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#include "../detail/type_float.hpp"
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namespace glm
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{
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template<typename genType>
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GLM_FUNC_QUALIFIER GLM_CONSTEXPR bool equal(genType const& x, genType const& y, genType const& epsilon)
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{
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return abs(x - y) <= epsilon;
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}
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template<typename genType>
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GLM_FUNC_QUALIFIER GLM_CONSTEXPR bool notEqual(genType const& x, genType const& y, genType const& epsilon)
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{
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return abs(x - y) > epsilon;
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}
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template<typename genType>
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GLM_FUNC_QUALIFIER GLM_CONSTEXPR bool equal(genType const& x, genType const& y, int MaxULPs)
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{
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detail::float_t<genType> const a(x);
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detail::float_t<genType> const b(y);
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// Different signs means they do not match.
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if(a.negative() != b.negative())
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return false;
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// Find the difference in ULPs.
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typename detail::float_t<genType>::int_type const DiffULPs = abs(a.i - b.i);
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return DiffULPs <= MaxULPs;
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}
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template<typename genType>
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GLM_FUNC_QUALIFIER GLM_CONSTEXPR bool notEqual(genType const& x, genType const& y, int ULPs)
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{
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return !equal(x, y, ULPs);
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}
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}//namespace glm
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