Remove the following types of build warnings:
warning C4189: local variable is initialized but not referenced
warning C4100: unreferenced parameter
warning C4101: unreferenced local variable
I have only commented out unused variables and used [[maybe_unused]] for unused parameters.
.. annotate(hline|vline, "text", style, value) to add a horizontal or
vertical line to the plot for the current series on a UserChart.
style is one of solid, dash, dot, dashdot or dashdotdot which are
the standard Qt pen styles for drawing lines.
I also took the opportunity to refactor how annotations are passed
from the datafilter down to the generic plot. This should make it
far easier to add annotations in the future.
.. fixed a SEGV in the voronoi annotation, which was related to memory
management and the sqrt_nsites variable (honestly, I am amazed it
ever worked).
.. labels in Python and R charts are now broken, will fixup shortly when
worked out how it should work (annotations are related to a series).
.. updated to have a more Qt/C++ friendly interface:
Voronoi *test = new Voronoi();
test->addSite(QPointF(2,5));
test->addSite(QPointF(3,2));
test->addSite(QPointF(6,4));
test->run(QRectF());
delete test;
the output is still written to standard out as a
series of points, lines, vertexes and edges. This
was to enable validation against the original
c program.
.. whilst the original functionality is now embedded a
further update will need to convert the output into
a vector of lines to draw.
will do this as part of adding it to a plot as an
annotation.
.. from C to a C++ class.
Moved the original code to a sundirectory for reference and
moved all the global variables and methods into a new class
called Voronoi.
.. the code still needs more work but wanted to remove the global
variables as there were lots and a big risk they interact
with other parts of the codebase and libraries.
