Spiral tip dynamics in the Noble model.
On 2D plane Vm values are displayed by the red color.
2 x values are displayed by the green color.
This script uses simple explicit algorithm and 1024x1024
float32 textures with the CLAMP_TO_EDGE boundary conditions.
It makes 2 it time steps per frame.
In 3 seconds the script begins to plot the path of the spiral wave tip.