2015-08-21 21:15:18 +00:00
|
|
|
fdraw
|
|
|
|
|
=====
|
|
|
|
|
|
|
|
|
|
Fast graphics routines for the Apple II
|
|
|
|
|
By Andy McFadden
|
|
|
|
|
Version 0.3, August 2015
|
|
|
|
|
|
|
|
|
|
## Overview ##
|
|
|
|
|
|
|
|
|
|
The fdraw library provides fast rendering of points, lines, rectangles,
|
|
|
|
|
and circles, as well as high-speed screen clears, for Apple II hi-res
|
|
|
|
|
graphics. It can be used from Applesoft or 6502 assembly language.
|
|
|
|
|
|
2015-08-21 21:18:13 +00:00
|
|
|
Two disk images are available in the [fdraw-disks](fdraw-disks.zip) zip
|
2015-08-21 21:15:18 +00:00
|
|
|
archive. `fdrawdemo.do` is a 140K disk image with the demos that will
|
|
|
|
|
run on an Apple ][+ or later. `fdrawdev.po` is an 800K disk image with
|
|
|
|
|
the source code, demos, and a few extras.
|
|
|
|
|
|
|
|
|
|
A video of the demos running in the AppleWin emulator
|
2015-08-21 21:18:13 +00:00
|
|
|
[is available](https://www.youtube.com/watch?v=z2RFGVoaROE).
|
2015-08-21 21:15:18 +00:00
|
|
|
|
|
|
|
|
Learn more about how fdraw works in the
|
2015-08-31 20:36:17 +00:00
|
|
|
[library documentation](docs/manual.md). In addition to documenting the
|
|
|
|
|
API, it provides an overview of Apple II graphics, an assessment of the
|
|
|
|
|
performance of each of the routines, and some ideas on how the speed
|
|
|
|
|
could be increased (usually by spending more memory).
|
2015-08-21 21:15:18 +00:00
|
|
|
|
2015-08-21 21:18:13 +00:00
|
|
|
Learn about the demos in the [demo documentation](docs/demos.md).
|
2015-08-21 21:15:18 +00:00
|
|
|
|
|
|
|
|
Learn more about what possessed me to write a graphics library for the
|
|
|
|
|
Apple II more than 20 years after the platform was discontinued in the
|
2015-08-21 21:18:13 +00:00
|
|
|
[fadden's brain documentation](docs/personal-notes.md).
|
2015-08-21 21:15:18 +00:00
|
|
|
|
|
|
|
|
The main bits of source code are accessible from git for easy viewing,
|
2015-08-21 21:18:13 +00:00
|
|
|
but the "official" home is the `fdrawdev.po` image.
|
2015-08-21 21:15:18 +00:00
|
|
|
|
|
|
|
|
All code is copyright 2015 by Andy McFadden. All rights reserved. The
|
|
|
|
|
source code is available under the Apache 2 license (a very friendly
|
|
|
|
|
open-source license).
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
### Version History ###
|
|
|
|
|
|
|
|
|
|
##### v0.1 March 13, 2006
|
|
|
|
|
|
|
|
|
|
No source code, just a demo with fast filled circles and screen clears.
|
|
|
|
|
|
|
|
|
|
##### v0.2 March 20, 2006
|
|
|
|
|
|
|
|
|
|
Polished up the sources and published. This version implemented Clear,
|
|
|
|
|
FillRect, FillCircle, and FillRaster.
|
|
|
|
|
|
|
|
|
|
##### v0.3 August 21, 2015
|
|
|
|
|
|
|
|
|
|
Added DrawPoint, DrawLine, DrawRect, DrawCircle, and SetLineMode. Various
|
|
|
|
|
size and performance improvements.
|
|
|
|
|
|
|
|
|
|
Added Amperfdraw to make Applesoft BASIC programming easier.
|
|
|
|
|
|
|
|
|
|
Added several more demos and tests.
|
|
|
|
|
|
|
|
|
|
Added documentation.
|
