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math classes

perplx · 2003-10-26T11:34:10

Ok, so i''m using c++ and OpenGL on MinGW, and i''m making Math classes: Vector2, Vector3, Vector4, Matrix3, Matrix4 And I wonder, how best to implement them? ie: class Vector4 { float x, y, z, w; //OR float vector[4]; //? } , class Matrix4 { float matrix[16]; //OR float matrix[4][4];//OR Vector4 columns[4];//? } which would be the fastest? From my experience, i can overload Matrix4::operator float *() even when it''s an array of Vector4''s, and send a pointer to Matrix4 to glMultMatrixf(), or a Vector3 * to glVertex3fv() when it''s {float x,y,z,w;}, but, well, i don''t trust my compiler, and i imagine it''s not cross-platform, not clean and unsafe. Could that be done SAFELY? I haven''t found anything on this subject, even in my books on game programming. Thanks i perplx

General and Gameplay Programming Programming

Started by perplx October 06, 2003 04:12 PM

9 comments, last by perplx 20 years, 5 months ago

YoshiN

122

October 26, 2003 11:34 AM

Why make things overly complicated by nesting a union inside of a class? In C++ unions can have member functions, inheritance, polymorphism, etc. so why not just start off with the union?

-YoshiXGXCX ''99