WPF project of the extensible calculator, intended to perform calculations of custom functions, that can be dynamically added from DLLs and for plotting them on the interactive coordinate grid; Wrapper classes for the custom functions must implement ICalculate interface defined in the zxcalc.dll (therefore, projects with custom functions must reference the zxcalc.dll).
Array calculations are performed in the multithreading manner.
The class CoordinateGrid represents coordinate grid stuff (grid lines, scale values and labels) and performs plotting. CoordinateGrid can easily be added to any WPF project by specifying the canvas on which you want to plot graphs.
The class PointsSampler implements a filtering method for efficient representation of graphs consisting of a large number of points.
Next steps are implementation of a calculation interruption (pausing and canceling) and more attractive interface;
