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A comment on Fully documented source code for Elite on the BBC Micro. Parent comment

Re:Fully documented source code for Elite on the BBC Micro by NCG_Mike on Monday September 28, 2020 @04:55AM (#24614515)
I assume they had a scaled up integer sin and tan tables and used matrices for scale, rotation and projection?

I do remember seeing this in 68K.

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Re:Fully documented source code for Elite on the BBC Micro by MarkMoxon on Monday September 28, 2020 @05:52AM (#24614891)
There are tables for sin, cos and arctan, but these are only used for drawing the planet’s circles. All the ship-drawing and universe manipulation is done using the small angle approximation, so there’s no need for lookup tables.

Lots more info here:

https://www.bbcelite.com/explore/articles/deep_dive_pitching...

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