Dan's Plot Core is a minimal library that adds plots with low-latency interactivity to Python.

• A Plot is created.
• Geometry is added to the plot in logical coordinates.
  • Can be done directly, or with a plot_* convenience function.
    • Convenience functions obey the current transform and primitive
      • transform takes logical coordinates x, y, sample index i, and plot series, and gives logical coordinates x, y and color r, g, b, a
      • primitive takes logical coordinates x, y and color r, g, b, a and adds geometry to the plot.
• The plot is shown (or resized).
  • A logical view is calculated.
  • late_vertexors are allowed to know the number of pixels in the display, and the shape of the logical view, to add further geometry to the plot.
• The plot can be interacted with.
  • Logical coordinates are converted to display coordinates on each render.
    • This step is quick because it is done on the graphics card.
• The convenience function plot can do all of the above for simple usages.

• late vertexors don't respond to resizing or zooming
• screen-relative text