Luna::mul

Float4 mul(const Float4 &vec, const Float4x4 &mat)

Performs matrix multiplication between one vector and one matrix.

This function performs the following operations:

return [Float4](struct_luna_1_1_float4.md)(
    vec.x * mat.r[0].x + vec.y * mat.r[1].x + vec.z * mat.r[2].x + vec.w * mat.r[3].x,
    vec.x * mat.r[0].y + vec.y * mat.r[1].y + vec.z * mat.r[2].y + vec.w * mat.r[3].y,
    vec.x * mat.r[0].z + vec.y * mat.r[1].z + vec.z * mat.r[2].z + vec.w * mat.r[3].z,
    vec.x * mat.r[0].w + vec.y * mat.r[1].w + vec.z * mat.r[2].w + vec.w * mat.r[3].w);

Parameters

• in vec

  The vector.

• in mat

  The matrix.

Return value

Returns the result vector.