CATS Library Tape 9

Date: 198x
Type: Cassette
Platform(s): TS 2068

An 11-program collection from the Capital Area Timex Sinclair User Group devoted to 3D graphics, mathematical surface plotting, and animation.

Content

2068 Graphics and Trig

Program

An interactive trigonometry explorer draws labeled quadrant diagrams, parametric curves, and Lissajous figures using user-supplied SIN and COS multipliers with custom UDG graphics.

Complex 7

Program

A 3D surface plot combining cosine waves and Gaussian exponential bumps uses hidden-line removal arrays to render a dramatic mathematical landscape — but be prepared to wait.

Drop

Program

A ripple-surface 3D plotter uses perspective projection and trigonometric rotation to render z=cos(0.1·(x²+y²)) as a connected wireframe mesh.

Droppages

Program

A 3-D surface plotter stores multiple rotated views using hand-coded Z80 machine routines, then plays them back as a smooth animation loop.

EXP

Program

A fascinating 3D surface plotter that renders Gaussian bell curves with perspective projection and saves multiple rendered frames using hand-POKEd Z80 machine code.

Moving Waves

Program

A hypnotic animated wave plot uses sine-driven coordinates and an error-trap handler to keep running until something inevitably goes wrong.

QRL

Program

A compact RLE graphics manager with machine code encode, decode, invert, and wipe routines lets you store, load, and manipulate compressed screen images from cassette.

Rotating Pyramid

Program

A 36-frame rotating 3D pyramid with hidden-line removal, perspective projection, and pre-computed animation frames played back from a single large array.

Saddle Cosine

Program

Watch a 3D saddle-shaped surface animate across four stored screen pages, driven by Z80 machine code block-copy routines and perspective projection math.

Saddle Cosine 1

Program

A morphing 3D saddle-cosine surface rendered with perspective projection, using Z80 LDIR machine code to page display-file snapshots in and out of RAM.

Sprite 2

Program

A BASIC loader installs a self-verifying machine code sprite engine that hooks the interrupt vector, animating graphics automatically while humorous fake copyright strings scroll by.

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Note: Type-in program listings on this website use ZMAKEBAS notation for graphics characters.

Tags

Archived Media Capital Area Timex Sinclair Users Group Downloadable TS 2068 Collection