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Reza Nourai's Game Development Ramblings
Random discussions about game development. Particularly math, physics, collision detection/response, and performance.
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Blog Post:
Math Primer Series: Rotation Representations and Quaternions
Reza Nourai - MSFT
We saw the power and usefulness of transforms in the previous primer posts, and we’ll be using them quite a bit in our discussions of physics and graphics. One of the first tasks we’ll need to do is determine how to represent our transformations in code. We’re going to be creating, manipulating, and...
on
29 Apr 2012
Blog Post:
Barycentric Coordinates and Point in Triangle Tests
Reza Nourai - MSFT
I know it’s been a little while since my last post, and I apologize. I’ll try and keep the posts a little more frequent moving forward. In the last post, we briefly encountered barycentric coordinates and loosely defined them as the coefficients of an affine combination. While that’s...
on
7 Aug 2011
Blog Post:
Math Primer Series: Vectors III: Affine Spaces, Linear and Affine Combinations
Reza Nourai - MSFT
In this chapter of our primer, we’ll examine affine spaces, and see what affine and linear combinations are. Furthermore, we can use these concepts to define some other related concepts, such as affine and linear dependency. Affine Space An affine space can be thought of as any space containing...
on
26 Jun 2011
Blog Post:
Math Primer Series: Vectors II: Vector Operations
Reza Nourai - MSFT
In the last installment of this math primer, we looked at the difference between points and vectors. Today, we’ll dive a little bit deeper into vectors, and the specific operations we can perform on them. More importantly, we’ll take a look at the geometric significance of the many operations...
on
1 Jun 2011
Blog Post:
Math Primer Series: Vectors I: Points vs. vectors
Reza Nourai - MSFT
Some math and physics libraries contain separate data types to represent points and vectors. I’ve seen many people become confused by this, since more commonly packages use vectors exclusively for everything. What’s going on here? Why have 2 separate types? Well, the answer is quite simple. Strictly...
on
19 May 2011
Blog Post:
Math Primer Series: Intro, Notation, and References
Reza Nourai - MSFT
This is the first part of a multi-part primer and reference for the math we’ll be using extensively throughout this blog. If you’ve been around game or graphics programming for any length of time, you’re probably at least somewhat familiar with many of these topics. However, you might...
on
18 May 2011
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