BasicMath

Preface

Time to understand basic math which often used in OpenGL.

Source From

• Vector dot product and vector length: https://www.khanacademy.org/math/linear-algebra/vectors-and-spaces/dot-cross-products/v/vector-dot-product-and-vector-length
• dot - OpenGL 4 Reference Page: https://www.khronos.org/registry/OpenGL-Refpages/gl4/html/dot.xhtml
• How to Normalized Vector: https://www.youtube.com/watch?v=7fn03DIW3Ak
• Vector: https://khanacademy.org/computing/computer-programming/programming-natural-simulations/programming-vectors/a/intro-to-vectors

Summary

Nomenclature

• Vector: Consist of direction and magnitude.
• Dot Product: Generate scalar value.
• Unit Vector: Create unit vector. Vector / Magnitude. u^=∣∣u∣∣ / u->
• Scalar Quantity: A quantity which does not depend on direction.
• Vector Quantity: A quantity which depends on direction.