How to draw a circle the hard way

[+DZ-Jay]

In looking at this thread again, I discovered that the original source of the circle algorithm in C went offline. I've since found its new location:

http://members.chello.at/easyfilter/bresenham.html

 

By the way, to address Catsfolly's last comment:

 

 

 

Probably the most straightforward way to do Missile Command would be to do the whole thing in colored squares. The result would be a low res, "Fisher -Price" kind of version. Purists would be offended. But it might be fun...

 

The beauty of Colored Squares mode is that you only need to blockify those BACKTAB cards that are covered by the explosion. The rest are in Color Stack mode. This also means that you'll have to keep a buffer to repaint after the explosions dissipate.

 

However, Colored Squares mode does not use GRAM, and considering that the rest of the game only needs custom graphics for the gunnery, player missiles, and UFO, most of GRAM can be used for the missile ray buffer!

 

I'd say it is perfectly doable! OMG!

 

-dZ.

[GroovyBee]

The beauty of Colored Squares mode is that you only need to blockify those BACKTAB cards that are covered by the explosion.

When I did the laser shot intro in Rocketeer in coloured squares mode I had to use MOBs for the first few frames of the animation because it was just too blocky otherwise.

[+DZ-Jay]

When I did the laser shot intro in Rocketeer in coloured squares mode I had to use MOBs for the first few frames of the animation because it was just too blocky otherwise.

 

I can see why. However, the point is that you don't have to do full-color squares or color stack, you can mix and match. Moreover, there should be some MOBs available for Missile Command, once you do the player's gunner, UFO and the bullets.

[GroovyBee]

I can see why. However, the point is that you don't have to do full-color squares or color stack, you can mix and match. Moreover, there should be some MOBs available for Missile Command, once you do the player's gunner, UFO and the bullets.

True! But As always, you need to find a trade off in available resources to get what you want from these old gals.

[+DZ-Jay]

Necrobump on this ancient thread to point out that a full-featured IntyBASIC version of the "Draw Circle" library is available, complete with documentation and demo program showcasing its utility and versatility.