public Matrix4x4 multiply(Matrix4x4 other) {
if (this.flagBits == Mathematics.mat_type_Identity) return new Matrix4x4(other);
else if (other.getType() == Mathematics.mat_type_Identity) return new Matrix4x4(this);
return new Matrix4x4(
// Fisrt Column
mat4[0] * other.get_value(0)
+ mat4[4] * other.get_value(1)
+ mat4[8] * other.get_value(2)
+ mat4[12] * other.get_value(3),
mat4[1] * other.get_value(0)
+ mat4[5] * other.get_value(1)
+ mat4[9] * other.get_value(2)
+ mat4[13] * other.get_value(3),
mat4[2] * other.get_value(0)
+ mat4[6] * other.get_value(1)
+ mat4[10] * other.get_value(2)
+ mat4[14] * other.get_value(3),
mat4[3] * other.get_value(0)
+ mat4[7] * other.get_value(1)
+ mat4[11] * other.get_value(2)
+ mat4[15] * other.get_value(3),
// Second Column
mat4[0] * other.get_value(4)
+ mat4[4] * other.get_value(5)
+ mat4[8] * other.get_value(6)
+ mat4[12] * other.get_value(7),
mat4[1] * other.get_value(4)
+ mat4[5] * other.get_value(5)
+ mat4[9] * other.get_value(6)
+ mat4[13] * other.get_value(7),
mat4[2] * other.get_value(4)
+ mat4[6] * other.get_value(5)
+ mat4[10] * other.get_value(6)
+ mat4[14] * other.get_value(7),
mat4[3] * other.get_value(4)
+ mat4[7] * other.get_value(5)
+ mat4[11] * other.get_value(6)
+ mat4[15] * other.get_value(7),
// Third Column
mat4[0] * other.get_value(8)
+ mat4[4] * other.get_value(9)
+ mat4[8] * other.get_value(10)
+ mat4[12] * other.get_value(11),
mat4[1] * other.get_value(8)
+ mat4[5] * other.get_value(9)
+ mat4[9] * other.get_value(10)
+ mat4[13] * other.get_value(11),
mat4[2] * other.get_value(8)
+ mat4[6] * other.get_value(9)
+ mat4[10] * other.get_value(10)
+ mat4[14] * other.get_value(11),
mat4[3] * other.get_value(8)
+ mat4[7] * other.get_value(9)
+ mat4[11] * other.get_value(10)
+ mat4[15] * other.get_value(11),
// Fourth Column
mat4[0] * other.get_value(12)
+ mat4[4] * other.get_value(13)
+ mat4[8] * other.get_value(14)
+ mat4[12] * other.get_value(15),
mat4[1] * other.get_value(12)
+ mat4[5] * other.get_value(13)
+ mat4[9] * other.get_value(14)
+ mat4[13] * other.get_value(15),
mat4[2] * other.get_value(12)
+ mat4[6] * other.get_value(13)
+ mat4[10] * other.get_value(14)
+ mat4[14] * other.get_value(15),
mat4[3] * other.get_value(12)
+ mat4[7] * other.get_value(13)
+ mat4[11] * other.get_value(14)
+ mat4[15] * other.get_value(15)
// is General matrix...
);
}
