Delphi (for FMX) plotting curves on TImage unit (with an example) - willi-spb/arTrassing GitHub Wiki
on Delphi XE10.1 for Firemonkey - FMX: a simple module for plotting curves on TImage as a graph - it is possible to output columns for diagrams, labels with inscriptions and other trifles. Sense: we enter an array of points - the graph itself selects the output area to fit inscriptions and outputs curves and parameters with the specified parameters and style (I mean the dependencies of Y on X).