68 lines
1.3 KiB
C++
68 lines
1.3 KiB
C++
/// @ref gtx_matrix_transform_2d
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/// @author Miguel Ángel Pérez Martínez
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#include "../trigonometric.hpp"
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namespace glm
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{
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template<typename T, qualifier Q>
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GLM_FUNC_QUALIFIER mat<3, 3, T, Q> translate(
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mat<3, 3, T, Q> const& m,
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vec<2, T, Q> const& v)
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{
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mat<3, 3, T, Q> Result(m);
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Result[2] = m[0] * v[0] + m[1] * v[1] + m[2];
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return Result;
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}
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template<typename T, qualifier Q>
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GLM_FUNC_QUALIFIER mat<3, 3, T, Q> rotate(
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mat<3, 3, T, Q> const& m,
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T angle)
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{
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T const a = angle;
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T const c = cos(a);
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T const s = sin(a);
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mat<3, 3, T, Q> Result;
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Result[0] = m[0] * c + m[1] * s;
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Result[1] = m[0] * -s + m[1] * c;
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Result[2] = m[2];
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return Result;
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}
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template<typename T, qualifier Q>
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GLM_FUNC_QUALIFIER mat<3, 3, T, Q> scale(
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mat<3, 3, T, Q> const& m,
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vec<2, T, Q> const& v)
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{
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mat<3, 3, T, Q> Result;
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Result[0] = m[0] * v[0];
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Result[1] = m[1] * v[1];
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Result[2] = m[2];
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return Result;
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}
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template<typename T, qualifier Q>
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GLM_FUNC_QUALIFIER mat<3, 3, T, Q> shearX(
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mat<3, 3, T, Q> const& m,
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T y)
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{
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mat<3, 3, T, Q> Result(1);
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Result[0][1] = y;
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return m * Result;
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}
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template<typename T, qualifier Q>
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GLM_FUNC_QUALIFIER mat<3, 3, T, Q> shearY(
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mat<3, 3, T, Q> const& m,
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T x)
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{
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mat<3, 3, T, Q> Result(1);
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Result[1][0] = x;
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return m * Result;
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}
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}//namespace glm
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