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added TransformPosition/Direction/Normal functions.

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This commit is contained in:
hyzboy 2024-07-17 01:28:10 +08:00
parent 0f236d9bc0
commit a387c85802
1 changed files with 22 additions and 2 deletions
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24
inc/hgl/math/Matrix.h
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@ -143,9 +143,29 @@ namespace hgl
inline Vector3f rotate(const Vector3f &v3f,float angle,const Vector3f &axis) inline Vector3f rotate(const Vector3f &v3f,float angle,const Vector3f &axis)
{ {
Vector4f result = rotate(angle, axis)*Vector4f(v3f, 1.0f); Vector4f result = rotate(angle, axis)*Vector4f(v3f, 1.0f);
return Vector3f(result.x,result.y,result.z); return Vector3f(result.x,result.y,result.z);
}
inline Vector3f TransformPosition(const Matrix4f &m,const Vector3f &v)
{
return Vector3f(m*Vector4f(v,1.0f));
}
inline Vector3f TransformDirection(const Matrix4f &m,const Vector3f &v)
{
return Vector3f(m*Vector4f(v,0.0f));
}
inline Vector3f TransformNormal(const Matrix4f &m,const Vector3f &v)
{
return normalize(Vector3f(transpose(inverse(m))*Vector4f(v,0.0f)));
}
inline Vector3f TransformNormal(const Matrix3f &m,const Vector3f &v)
{
return normalize(m*v);
} }
}//namespace hgl }//namespace hgl
#endif//HGL_ALGORITHM_MATH_VECTOR_MATRIX_INCLUDE #endif//HGL_ALGORITHM_MATH_VECTOR_MATRIX_INCLUDE