This is a description of the polygons format as produced by the deformation algorithm: A file looks like: and means: P 0.3 0.7 0.5 100 1 65538 # amb diff spec spec opacity n_points # coef coef coef exponent 63.7483 -0.0488046 25.3558 # x y z for point 0 -62.3075 0.616629 25.0492 # x y z for point 1 . . . . . . -0.319302 -5.36752 -5.124 # x y z for point n_points-2 -0.277344 -6.09656 -5.0817 # x y z for point n_points-1 0.889197 -0.441812 0.118871 # x y z for normal for point 0 -0.771675 -0.275487 -0.573259 # x y z for normal for point 1 . . . . . . 0.954681 0.00771897 -0.29753 # x y z for normal for point n_points-2 0.969842 0.0843502 -0.228673 # x y z for normal for point n_points-1 131072 # number of triangles 2 0.321569 0 0 1 # 2 == one colour per point r g b a for point0 # 0 == one colour for whole set of polygons 0.305882 0 0 1 # r g b a for point 1 (alpha (a) is always 1) 0.0431373 0 0 1 # r g b a for point 2 . . . . . . 0.219608 0 0 1 # r g b a for point n_points-2 0.235294 0 0 1 # r g b a for point n_points-1 3 6 9 12 15 18 21 24 # 131072 integers which can be ignored 27 30 33 36 39 42 45 48 # since they are multiples of 3 . . . 393171 393174 393177 393180 393183 393186 393189 393192 393195 393198 393201 393204 393207 393210 393213 393216 0 16386 16388 16386 4098 16387 16388 16386 # 3 * 131072 integers where 16387 16388 16387 4100 4098 16389 16391 16389 # 1 2 3 are indices of tri 1 . # 4 5 6 are indices of tri 2 . etc. . 65536 65537 65536 9297 13920 65537 55488 65537 9297 37025 55488 65537 37025 55488 37025 5