matrix_transform_2d.inl

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