Why does this not work (glm::make_mat4)? - c++

Question

I have this code:
glm::mat4 aLookAt(const glm::vec3& Eye, const glm::vec3& Center, const glm::vec3& Up)
{
glm::vec3 Z = glm::normalize(Eye - Center);
glm::vec3 Y = Up;
glm::vec3 X = glm::normalize(glm::cross(Y, Z));
Y = glm::normalize(glm::cross(Z, X));
float Matrix[4][4];
Matrix[0][0] = X.x;
Matrix[1][0] = X.y;
Matrix[2][0] = X.z;
Matrix[3][0] = (float)glm::dot(-X, Eye);
Matrix[0][1] = Y.x;
Matrix[1][1] = Y.y;
Matrix[2][1] = Y.z;
Matrix[3][1] = (float)glm::dot(-Y, Eye);
Matrix[0][2] = Z.x;
Matrix[1][2] = Z.y;
Matrix[2][2] = Z.z;
Matrix[3][2] = (float)glm::dot(Z, Eye);
Matrix[0][3] = 0;
Matrix[1][3] = 0;
Matrix[2][3] = 0;
Matrix[3][3] = 1.0f;
glm::mat4 theMatrix = glm::make_mat4(Matrix);
return theMatrix;
}
But whenever I try to compile it, it get the following errors:
Why? This time I actually expected no errors..

Answer 1

The compiler tells you why. You are passing float[4][4] to a method that expects a pointer to float:
template<typename T >
detail::tmat4x4< T > make_mat4 (T const *const ptr)
Those types are not compatible. You need a float[16] instead:
float Matrix[16];
Matrix[0] = X.x;
Matrix[1] = X.y;
Matrix[2] = X.z;
Matrix[3] = (float)glm::dot(-X, Eye);
Matrix[4] = Y.x;
Matrix[5] = Y.y;
Matrix[6] = Y.z;
Matrix[7] = (float)glm::dot(-Y, Eye);
Matrix[8] = Z.x;
Matrix[9] = Z.y;
Matrix[10] = Z.z;
Matrix[11] = (float)glm::dot(Z, Eye);
Matrix[12] = 0;
Matrix[13] = 0;
Matrix[14] = 0;
Matrix[15] = 1.0f;