You can perform all sorts of math with vectors. You can add them, subtract them, multiply them by scalars (constant numbers) to change their magnitude, and much more. This comes into play in ^ ^ J t/ = <3,4> It/I… читать далее

Before you can work with ASCII files, you must know how to extract the information you need, also called parsing, from the file. C++ is pretty strict about what it datatypes. You can’t simply set an integer equal to a… читать далее

As you read in the first part of this chapter, some operations that are normally performed on matrices can be done much cheaper with quaternions. One of these is multiplication. Multiplying two quater­nions together has the same effect as multiplying… читать далее

As with regular key-framed animation that stores multiple copies of the vertices, skeletal animation systems also have keyframes. Recall that keyframes are snapshots of a model’s position. However, instead of each keyframe containing its own copy of the vertices, a… читать далее

Just like regular numbers, matrices can be added and subtracted. Matrix addition and subtraction are not used much in graphics pro­gramming, but that does not mean they cannot be used in other parts of your game. For instance, if you… читать далее

F inally, you are through all that math and introductory stuff. Now, on to the first chapter that really deals with 3D models! First up, the MD2 format. The MD2 format was created by the folks at id Software for… читать далее

N ot sure what a particular model is used for? This handy chart lists some of the more common formats and which application, game, or editor they come from. Table A-1 Common 3D Model Formats Extension Editor/Uses Links 3DMF 3D… читать далее