Colouring of 2D projected stress states in yield function visualisation #5
Description
Currently, the opacity of stress states in the 2D projected yield function visualisations is set according to distance from the projection plane, so points closest to the plane are darker than those far away. This is currently relatively defined, so even though the darkest point is the closest stress state to the plane, it is not necessarily close. This should be defined with some sensible tolerance.