Now that we know what values we need to store (these values are called our model), we need to figure out what we actually have to do with them. We'll say that each value in the matrix cooresponds to a 1 × 1 location in the world. If there is non-zero number at a position in the matrix, that means there is a wall at the corresponding location in the world. The walls give us more options, but for simplicity, we'll store a matrix that represents a floor plan. We'd like to use X and Y, but these get modified by the Line operation we use later). On the other hand, since there is only one camera, we'll store it's position in two variables, S and T (because they are right above X and Y an the TI-83 keyboard. How do we keep track of these values? Well, since there are a bunch of rays, we'll store their directions in a list, L₁. For simplicity, we'll just keep track of walls. We need to keep track of all of "objects"' locations.We need to keep track of the origin of the rays, or the camera's position.Specifically, we need to know their directions. The values we need to keep track of are right in the ray casting algorithm. Now that we've defined what we're implementing, let's move on to figuring out how. Of course, we'll need to use more than 5 rays if we want a decent image. From a top down view, it might looks like this: Render the part of that object that intersects the ray at a position dependent on the ray's directionįor TI-83, we'll implement a simple ray caster that only sends out horizontal rays.Compute the closest object that intersects that ray.Send out rays from a single point in different directions.What ray casting algorithms generally have in common is that they: Ray casting is a term used to describe a collection of algorithms for rendering 3D graphics. All rights reserved.Can ray casting be done in TI-83 Basic? Yes let's try it. To locate available emulators and learn how to download a ROM image from your calculator, see ourĬopyright © 1996-2012, the project. Several emulators are available to let you simulate TI calculators on yourĬomputer. » The Vortex: Ti-83+ ASM Programming by Wes Cronk Some work is required to port TI-83 assembly programs to the TI-83 Plus.įor software development, we recommend Brass, included with the Doors CS SDK, or SPASM. » TI-83 Plus BASIC: A Beginners' Guide by Boris ChernyĪssembly language programming capability is built-in to the TI-83 Plus.Īssembly programs written for the TI-83 will not run without modification on the TI-83 Plus » The Vortex: TI-83+ BASIC Programming by Wes Cronk » Using the TI-83 Plus/TI-84 Plus by Christopher Mitchell » Programming the TI-83 Plus/TI-84 Plus by Christopher Mitchell The Power Extension instructions will show you how to use AA (instead of AAA)īatteries without making any modifications to your calculator.īASIC programming on the TI-83 Plus SE is compatible with that of the TI-83 Plus. Link cables let you transfer data files (such as programs) between your Version of your TI-83 Plus SE using the following key sequence and reading the Several versions of each calculator in the marketplace. Work around bugs, optimize functions, and even add features. It connects to your serial port and like TI Connect is widely used to transfer data files (such as programs) between your calculator and your computer.įrom time to time, TI will update the internal code of their calculators to It does not have as high of data transfer rate, but it does work with almost all calculators. The TI-Graph Link is the older link cable produced by TI. It's a USB cable and lets you transfer data files (such as programs) between your calculator and your computer. It has a higher data transfer rate than the TI-Graph Link cable. The TI Connect is the latest link cable produced by TI. It was the most popular among Texas Instruments Z80 calculators, but TI has now discontinued it in favor of the TI-84 Plus and TI-84 Plus Silver Edition.ġ28K RAM (24K available to user), 1.5 MB Flash ROM Like the 83 Plus, it allows for flash-upgradable ROM and calculator-based applications. The TI-83 Plus SE is nearly identical to the TI-83 Plus, maintaining backwards compatibility but greatly increasing available memory.
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