RbgaBox Biaxial Mosaic

[CharlieJV]

https://www.reddit.com/r/BASICAnywhereMachine/comments/16e8ypo/rgbabox_biaxial_mosaic/

[Lucidapogee]

This is what loads on my end.

I noticed you have a blogspot. That worked well and looks nice.

[CharlieJV]

Ah, I don't use mobile devices.  Looks like you can't access the Reddit website without installing an app?  That sucks.

Here's copy/paste from the reddit:

This program tests the RbgaBox library statement in the [development version of BASIC Anywhere Machine](https://bam-ide.tiddlyhost.com/).

* [Run the program](https://basicanywheremachine.neocities.org/sample_programs/RbgaBox%20Biaxial%20Mosaic.prod.run)
* [View the source code](https://basicanywheremachine.neocities.org/sample_programs/RbgaBox%20Biaxial%20Mosaic.prod.bas)

[Lucidapogee]

Thank you. It was doing it to me on XP too.

So, the rgba is for opacity. That would make a cool cloud effect on a top down game.

[CharlieJV]

Thank you. It was doing it to me on XP too.

So, the rgba is for opacity. That would make a cool cloud effect on a top down game.

My primary compatibility mission is GW-BASIC, QB64 a secondary mission.  And with both of those missions, I'm kind of catching QBasic as a side-benefit.

To implement alpha-blending (is that the right word?  Maybe I'm confused about alpha-blending vs opacity) in a QB64 way, I'd have to make a major overhaul to wwwBASIC.  Bleurk.

So instead, I'm creating libraries with Rgba* statements as alternatives to the standard PSET, LINE, CIRCLE (no javascript coding, rather pretty much standard BASIC code (minimal BAM-specific BASIC) in these libraries.

Oh yeah for sure, once I have the libraries and functions all well-organized, we'll be able to do some good stuff.

Already, in the development version of BAM, the RgbaPset, RgbaLine, and RgbaBox are pretty powerful.

Next: RgbaCircle.

Then, after I create a proper "Polygon" function in a library: RgbaPolygon.

Rock'n roll !

[ZXDunny]

The real trick is to not visit any pixel more than once. I have a very, very fast polygon rasteriser but damn it's annoying to modify because of that reason

[CharlieJV]

The real trick is to not visit any pixel more than once. I have a very, very fast polygon rasteriser but damn it's annoying to modify because of that reason

I've got this idea I want to implement first, just to get the danged thing out of my head because it is gnawing at me something silly.  Then, if I can manage to not get distracted by the goofiest thing, I'm gonna want to look at your code.  Well, I also have to study some code by bplus that is equal to QB64's "_MAPTRIANGLE", which I don't understand at all after reading about it a few times on the QB64PE wiki.

Whatever I do, it is going to have to be BASIC code.  I do not feel at all like doing anything in javascript.  I need a break from that.