28th 'shape' file for CPO3D, all types of triangles
Leading lines, with 'comments':
triangle ***flat
str -triangle on sphere ***sphere
ctr -triangle on a cone ***cyl
ctr -triangle on a cone ***con
est -end spherical triangle ***end sph
ect -end con or cyl triangle ***end cyl
ect -end con or cyl triangle ***end con
edt -end disc triangle ***end disc
triangle ***flat, thin
est -end spherical triangle ***end sph, thin
ect -end con or cyl triangle ***end cyl, thin
ect -end con or cyl triangle ***end con, thin
ect -end con or cyl triangle ***end con, thin
edt -end disc triangle ***end disc, thin
'end con, thin' occurs twice, for 2 neighbouring electrodes, in order to simulate a more visible part of a cone. It becomes even more visible if
the x=0 and y=0 reflection planes are used. Note also that for these electrodes the geodesic nearly moves outside the defined boundary planes
(and in fact it does move outside if the 2 triangles are made thinner).
Note the method of subdivision of the thin triangles: it tends to be different from the more regular method for triangles that are not thin, where successive bisection of the longest side is used.