[fpc-pascal] Calculating Pixels to represent 3D coordinates

Wolf wv99999 at gmail.com
Tue Sep 17 23:03:58 CEST 2019

What you are trying to do is write a very simple CAD program. Have a 
look at this link 
which gives the basic formulae and also Pascal routines to do it.


On 18/09/19 2:10 AM, James Richters wrote:
> I'm curious if Freepascal has any package available that would calculate X,Y screen pixels based on 3D  X,Y,Z  data at some given rotations.  I'm using Agg-Pas with PTC-Graph in a console application on Windows.   I'm not sure what the technical term is for figuring out what pixels are used to represent 3D coordinates on a 2D screen, but I'm hoping maybe there is something that just does the calculations that I can use in conjunction with Agg-Pas and PTC-Graph instead of moving to a complete graphics package.
> James
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