Index: tests/regression/Tesselation/4/post/NonConvexEnvelope.r3d
===================================================================
--- tests/regression/Tesselation/4/post/NonConvexEnvelope.r3d	(revision ebcadedc2eb5f524f09fc7618fe9f4fea00cdbb8)
+++ tests/regression/Tesselation/4/post/NonConvexEnvelope.r3d	(revision ebcadedc2eb5f524f09fc7618fe9f4fea00cdbb8)
@@ -0,0 +1,321 @@
+# Raster3D object description, created by MoleCuilder
+@header.r3d
+# All atoms as spheres
+2
+  0.952534 -3.05798 0.420171 	0.1	1. 1. 1.
+2
+  -0.139866 -1.98848 0.359771 	0.1	1. 1. 1.
+2
+  0.0788342 -1.07508 -0.875229 	0.1	1. 1. 1.
+2
+  -1.49147 -2.63828 0.0780712 	0.1	1. 1. 1.
+2
+  -0.0588658 -1.09478 1.58347 	0.1	1. 1. 1.
+2
+  1.53473 -0.644479 -0.868129 	0.1	1. 1. 1.
+2
+  -0.333166 -2.00128 -2.02443 	0.1	1. 1. 1.
+2
+  -2.62147 -1.78218 0.653571 	0.1	1. 1. 1.
+2
+  -1.60077 -2.70398 -1.46563 	0.1	1. 1. 1.
+2
+  1.37913 -0.560579 1.65607 	0.1	1. 1. 1.
+2
+  1.75933 0.205421 0.395371 	0.1	1. 1. 1.
+2
+  1.79893 0.246421 -2.08883 	0.1	1. 1. 1.
+2
+  -2.64037 -0.423279 -0.0491288 	0.1	1. 1. 1.
+2
+  -3.96017 -2.48928 0.432671 	0.1	1. 1. 1.
+2
+  3.23013 0.593821 0.484471 	0.1	1. 1. 1.
+2
+  3.14803 0.889821 -1.96833 	0.1	1. 1. 1.
+2
+  -3.79507 0.418021 0.498371 	0.1	1. 1. 1.
+2
+  3.36023 1.76962 1.45487 	0.1	1. 1. 1.
+2
+  3.78273 1.01752 -0.849429 	0.1	1. 1. 1.
+2
+  4.07093 -0.563879 1.01767 	0.1	1. 1. 1.
+2
+  -3.81397 1.77692 -0.204329 	0.1	1. 1. 1.
+2
+  5.17783 1.62112 -0.842829 	0.1	1. 1. 1.
+2
+  5.49863 -0.464179 0.482071 	0.1	1. 1. 1.
+2
+  -4.96867 2.61822 0.343171 	0.1	1. 1. 1.
+2
+  5.93083 0.990421 0.337371 	0.1	1. 1. 1.
+2
+  -4.98757 3.97722 -0.359529 	0.1	1. 1. 1.
+2
+  -6.29237 1.89422 0.0890712 	0.1	1. 1. 1.
+2
+  7.33693 1.04442 0.0886712 	0.1	1. 1. 1.
+2
+  0.790434 -3.69418 1.29027 	0.1	1. 1. 1.
+2
+  0.917634 -3.66448 -0.484829 	0.1	1. 1. 1.
+2
+  1.92773 -2.57738 0.498071 	0.1	1. 1. 1.
+2
+  -0.574266 -0.203779 -0.824729 	0.1	1. 1. 1.
+2
+  -1.52417 -3.64138 0.503471 	0.1	1. 1. 1.
+2
+  -0.759066 -0.265179 1.48487 	0.1	1. 1. 1.
+2
+  -0.287266 -1.67078 2.48017 	0.1	1. 1. 1.
+2
+  2.19193 -1.51408 -0.867629 	0.1	1. 1. 1.
+2
+  -0.573766 -1.42458 -2.91753 	0.1	1. 1. 1.
+2
+  0.450934 -2.72908 -2.23353 	0.1	1. 1. 1.
+2
+  -2.45927 -1.63678 1.72157 	0.1	1. 1. 1.
+2
+  -1.62867 -3.74268 -1.79493 	0.1	1. 1. 1.
+2
+  -2.49667 -2.18078 -1.79993 	0.1	1. 1. 1.
+2
+  1.46453 0.112321 2.50927 	0.1	1. 1. 1.
+2
+  2.06173 -1.39848 1.79787 	0.1	1. 1. 1.
+2
+  1.15633 1.11082 0.326671 	0.1	1. 1. 1.
+2
+  1.76663 -0.360379 -2.99373 	0.1	1. 1. 1.
+2
+  1.03283 1.01972 -2.14533 	0.1	1. 1. 1.
+2
+  -1.69727 0.0925205 0.131971 	0.1	1. 1. 1.
+2
+  -2.77417 -0.570279 -1.12083 	0.1	1. 1. 1.
+2
+  -4.75167 -1.93408 0.935971 	0.1	1. 1. 1.
+2
+  -4.17327 -2.53828 -0.635229 	0.1	1. 1. 1.
+2
+  -3.90927 -3.49908 0.839771 	0.1	1. 1. 1.
+2
+  3.62023 1.25552 -2.86813 	0.1	1. 1. 1.
+2
+  -4.73807 -0.0977795 0.317371 	0.1	1. 1. 1.
+2
+  -3.66127 0.565021 1.57007 	0.1	1. 1. 1.
+2
+  3.24233 1.41142 2.47757 	0.1	1. 1. 1.
+2
+  4.34293 2.22742 1.34117 	0.1	1. 1. 1.
+2
+  2.58823 2.50762 1.23707 	0.1	1. 1. 1.
+2
+  4.08983 -0.525479 2.10687 	0.1	1. 1. 1.
+2
+  3.62993 -1.50808 0.698371 	0.1	1. 1. 1.
+2
+  -2.87097 2.29272 -0.0233288 	0.1	1. 1. 1.
+2
+  -3.94777 1.63002 -1.27603 	0.1	1. 1. 1.
+2
+  5.68853 1.38852 -1.77723 	0.1	1. 1. 1.
+2
+  5.11553 2.70122 -0.710229 	0.1	1. 1. 1.
+2
+  6.17523 -0.969279 1.17127 	0.1	1. 1. 1.
+2
+  5.55043 -0.952879 -0.490929 	0.1	1. 1. 1.
+2
+  -4.83487 2.76522 1.41487 	0.1	1. 1. 1.
+2
+  5.70193 1.54062 1.25007 	0.1	1. 1. 1.
+2
+  -5.81017 4.57652 0.0304712 	0.1	1. 1. 1.
+2
+  -4.04457 4.49292 -0.178529 	0.1	1. 1. 1.
+2
+  -5.12137 3.83022 -1.43123 	0.1	1. 1. 1.
+2
+  -6.27887 0.926121 0.589671 	0.1	1. 1. 1.
+2
+  -7.11497 2.49352 0.479071 	0.1	1. 1. 1.
+2
+  -6.42617 1.74722 -0.982629 	0.1	1. 1. 1.
+2
+  7.56833 1.97852 -0.00632877 	0.1	1. 1. 1.
+# All tesselation triangles
+8
+  25. -1.   1. 1. 1.   0.0    0 0 0 2
+  SOLID     1.0 0.0 0.0
+  BACKFACE  0.3 0.3 1.0   0 0
+1
+  7.33693 1.04442 0.0886712 	5.68853 1.38852 -1.77723 	7.56833 1.97852 -0.00632877 	1. 0. 0.
+1
+  7.33693 1.04442 0.0886712 	5.68853 1.38852 -1.77723 	5.55043 -0.952879 -0.490929 	1. 0. 0.
+1
+  5.68853 1.38852 -1.77723 	5.11553 2.70122 -0.710229 	7.56833 1.97852 -0.00632877 	1. 0. 0.
+1
+  7.33693 1.04442 0.0886712 	6.17523 -0.969279 1.17127 	5.55043 -0.952879 -0.490929 	1. 0. 0.
+1
+  3.62023 1.25552 -2.86813 	5.68853 1.38852 -1.77723 	5.55043 -0.952879 -0.490929 	1. 0. 0.
+1
+  3.62023 1.25552 -2.86813 	5.68853 1.38852 -1.77723 	5.11553 2.70122 -0.710229 	1. 0. 0.
+1
+  4.34293 2.22742 1.34117 	5.11553 2.70122 -0.710229 	7.56833 1.97852 -0.00632877 	1. 0. 0.
+1
+  7.33693 1.04442 0.0886712 	6.17523 -0.969279 1.17127 	5.70193 1.54062 1.25007 	1. 0. 0.
+1
+  3.62993 -1.50808 0.698371 	6.17523 -0.969279 1.17127 	5.55043 -0.952879 -0.490929 	1. 0. 0.
+1
+  1.76663 -0.360379 -2.99373 	3.62023 1.25552 -2.86813 	5.55043 -0.952879 -0.490929 	1. 0. 0.
+1
+  1.03283 1.01972 -2.14533 	3.62023 1.25552 -2.86813 	5.11553 2.70122 -0.710229 	1. 0. 0.
+1
+  4.34293 2.22742 1.34117 	2.58823 2.50762 1.23707 	5.11553 2.70122 -0.710229 	1. 0. 0.
+1
+  4.34293 2.22742 1.34117 	5.70193 1.54062 1.25007 	7.56833 1.97852 -0.00632877 	1. 0. 0.
+1
+  7.33693 1.04442 0.0886712 	5.70193 1.54062 1.25007 	7.56833 1.97852 -0.00632877 	1. 0. 0.
+1
+  4.08983 -0.525479 2.10687 	6.17523 -0.969279 1.17127 	5.70193 1.54062 1.25007 	1. 0. 0.
+1
+  4.08983 -0.525479 2.10687 	3.62993 -1.50808 0.698371 	6.17523 -0.969279 1.17127 	1. 0. 0.
+1
+  1.92773 -2.57738 0.498071 	3.62993 -1.50808 0.698371 	5.55043 -0.952879 -0.490929 	1. 0. 0.
+1
+  1.76663 -0.360379 -2.99373 	1.03283 1.01972 -2.14533 	3.62023 1.25552 -2.86813 	1. 0. 0.
+1
+  0.450934 -2.72908 -2.23353 	1.76663 -0.360379 -2.99373 	5.55043 -0.952879 -0.490929 	1. 0. 0.
+1
+  1.03283 1.01972 -2.14533 	2.58823 2.50762 1.23707 	5.11553 2.70122 -0.710229 	1. 0. 0.
+1
+  3.24233 1.41142 2.47757 	4.34293 2.22742 1.34117 	2.58823 2.50762 1.23707 	1. 0. 0.
+1
+  3.24233 1.41142 2.47757 	4.34293 2.22742 1.34117 	5.70193 1.54062 1.25007 	1. 0. 0.
+1
+  3.24233 1.41142 2.47757 	4.08983 -0.525479 2.10687 	5.70193 1.54062 1.25007 	1. 0. 0.
+1
+  0.790434 -3.69418 1.29027 	4.08983 -0.525479 2.10687 	3.62993 -1.50808 0.698371 	1. 0. 0.
+1
+  0.790434 -3.69418 1.29027 	1.92773 -2.57738 0.498071 	3.62993 -1.50808 0.698371 	1. 0. 0.
+1
+  0.917634 -3.66448 -0.484829 	1.92773 -2.57738 0.498071 	5.55043 -0.952879 -0.490929 	1. 0. 0.
+1
+  -0.573766 -1.42458 -2.91753 	1.76663 -0.360379 -2.99373 	1.03283 1.01972 -2.14533 	1. 0. 0.
+1
+  -0.573766 -1.42458 -2.91753 	0.450934 -2.72908 -2.23353 	1.76663 -0.360379 -2.99373 	1. 0. 0.
+1
+  2.19193 -1.51408 -0.867629 	0.450934 -2.72908 -2.23353 	5.55043 -0.952879 -0.490929 	1. 0. 0.
+1
+  1.03283 1.01972 -2.14533 	2.58823 2.50762 1.23707 	-4.04457 4.49292 -0.178529 	1. 0. 0.
+1
+  1.46453 0.112321 2.50927 	3.24233 1.41142 2.47757 	2.58823 2.50762 1.23707 	1. 0. 0.
+1
+  1.46453 0.112321 2.50927 	3.24233 1.41142 2.47757 	4.08983 -0.525479 2.10687 	1. 0. 0.
+1
+  0.790434 -3.69418 1.29027 	2.06173 -1.39848 1.79787 	4.08983 -0.525479 2.10687 	1. 0. 0.
+1
+  0.790434 -3.69418 1.29027 	0.917634 -3.66448 -0.484829 	1.92773 -2.57738 0.498071 	1. 0. 0.
+1
+  0.917634 -3.66448 -0.484829 	2.19193 -1.51408 -0.867629 	5.55043 -0.952879 -0.490929 	1. 0. 0.
+1
+  -0.573766 -1.42458 -2.91753 	1.03283 1.01972 -2.14533 	-3.94777 1.63002 -1.27603 	1. 0. 0.
+1
+  -0.573766 -1.42458 -2.91753 	0.450934 -2.72908 -2.23353 	-1.62867 -3.74268 -1.79493 	1. 0. 0.
+1
+  0.917634 -3.66448 -0.484829 	2.19193 -1.51408 -0.867629 	0.450934 -2.72908 -2.23353 	1. 0. 0.
+1
+  1.03283 1.01972 -2.14533 	-4.04457 4.49292 -0.178529 	-5.12137 3.83022 -1.43123 	1. 0. 0.
+1
+  2.58823 2.50762 1.23707 	-2.87097 2.29272 -0.0233288 	-4.04457 4.49292 -0.178529 	1. 0. 0.
+1
+  1.46453 0.112321 2.50927 	2.58823 2.50762 1.23707 	-4.83487 2.76522 1.41487 	1. 0. 0.
+1
+  1.46453 0.112321 2.50927 	2.06173 -1.39848 1.79787 	4.08983 -0.525479 2.10687 	1. 0. 0.
+1
+  0.790434 -3.69418 1.29027 	-0.287266 -1.67078 2.48017 	2.06173 -1.39848 1.79787 	1. 0. 0.
+1
+  0.790434 -3.69418 1.29027 	0.917634 -3.66448 -0.484829 	-1.52417 -3.64138 0.503471 	1. 0. 0.
+1
+  -0.573766 -1.42458 -2.91753 	-2.49667 -2.18078 -1.79993 	-3.94777 1.63002 -1.27603 	1. 0. 0.
+1
+  1.03283 1.01972 -2.14533 	-3.94777 1.63002 -1.27603 	-5.12137 3.83022 -1.43123 	1. 0. 0.
+1
+  -0.573766 -1.42458 -2.91753 	-1.62867 -3.74268 -1.79493 	-2.49667 -2.18078 -1.79993 	1. 0. 0.
+1
+  0.917634 -3.66448 -0.484829 	0.450934 -2.72908 -2.23353 	-1.62867 -3.74268 -1.79493 	1. 0. 0.
+1
+  -5.81017 4.57652 0.0304712 	-4.04457 4.49292 -0.178529 	-5.12137 3.83022 -1.43123 	1. 0. 0.
+1
+  2.58823 2.50762 1.23707 	-2.87097 2.29272 -0.0233288 	-4.83487 2.76522 1.41487 	1. 0. 0.
+1
+  -2.87097 2.29272 -0.0233288 	-4.83487 2.76522 1.41487 	-4.04457 4.49292 -0.178529 	1. 0. 0.
+1
+  1.46453 0.112321 2.50927 	-3.66127 0.565021 1.57007 	-4.83487 2.76522 1.41487 	1. 0. 0.
+1
+  -0.287266 -1.67078 2.48017 	1.46453 0.112321 2.50927 	2.06173 -1.39848 1.79787 	1. 0. 0.
+1
+  0.790434 -3.69418 1.29027 	-1.52417 -3.64138 0.503471 	-0.287266 -1.67078 2.48017 	1. 0. 0.
+1
+  0.917634 -3.66448 -0.484829 	-1.52417 -3.64138 0.503471 	-1.62867 -3.74268 -1.79493 	1. 0. 0.
+1
+  -2.49667 -2.18078 -1.79993 	-3.94777 1.63002 -1.27603 	-6.42617 1.74722 -0.982629 	1. 0. 0.
+1
+  -3.94777 1.63002 -1.27603 	-5.12137 3.83022 -1.43123 	-6.42617 1.74722 -0.982629 	1. 0. 0.
+1
+  -1.62867 -3.74268 -1.79493 	-2.49667 -2.18078 -1.79993 	-4.17327 -2.53828 -0.635229 	1. 0. 0.
+1
+  -4.83487 2.76522 1.41487 	-5.81017 4.57652 0.0304712 	-4.04457 4.49292 -0.178529 	1. 0. 0.
+1
+  -5.81017 4.57652 0.0304712 	-5.12137 3.83022 -1.43123 	-7.11497 2.49352 0.479071 	1. 0. 0.
+1
+  -0.287266 -1.67078 2.48017 	1.46453 0.112321 2.50927 	-3.66127 0.565021 1.57007 	1. 0. 0.
+1
+  -3.66127 0.565021 1.57007 	-4.83487 2.76522 1.41487 	-6.27887 0.926121 0.589671 	1. 0. 0.
+1
+  -1.52417 -3.64138 0.503471 	-0.287266 -1.67078 2.48017 	-3.90927 -3.49908 0.839771 	1. 0. 0.
+1
+  -1.52417 -3.64138 0.503471 	-1.62867 -3.74268 -1.79493 	-3.90927 -3.49908 0.839771 	1. 0. 0.
+1
+  -2.49667 -2.18078 -1.79993 	-4.17327 -2.53828 -0.635229 	-6.42617 1.74722 -0.982629 	1. 0. 0.
+1
+  -5.12137 3.83022 -1.43123 	-7.11497 2.49352 0.479071 	-6.42617 1.74722 -0.982629 	1. 0. 0.
+1
+  -1.62867 -3.74268 -1.79493 	-4.17327 -2.53828 -0.635229 	-3.90927 -3.49908 0.839771 	1. 0. 0.
+1
+  -4.83487 2.76522 1.41487 	-5.81017 4.57652 0.0304712 	-7.11497 2.49352 0.479071 	1. 0. 0.
+1
+  -0.287266 -1.67078 2.48017 	-2.45927 -1.63678 1.72157 	-3.66127 0.565021 1.57007 	1. 0. 0.
+1
+  -4.75167 -1.93408 0.935971 	-3.66127 0.565021 1.57007 	-6.27887 0.926121 0.589671 	1. 0. 0.
+1
+  -4.83487 2.76522 1.41487 	-6.27887 0.926121 0.589671 	-7.11497 2.49352 0.479071 	1. 0. 0.
+1
+  -0.287266 -1.67078 2.48017 	-2.45927 -1.63678 1.72157 	-3.90927 -3.49908 0.839771 	1. 0. 0.
+1
+  -4.17327 -2.53828 -0.635229 	-6.27887 0.926121 0.589671 	-6.42617 1.74722 -0.982629 	1. 0. 0.
+1
+  -6.27887 0.926121 0.589671 	-7.11497 2.49352 0.479071 	-6.42617 1.74722 -0.982629 	1. 0. 0.
+1
+  -4.75167 -1.93408 0.935971 	-4.17327 -2.53828 -0.635229 	-3.90927 -3.49908 0.839771 	1. 0. 0.
+1
+  -2.45927 -1.63678 1.72157 	-4.75167 -1.93408 0.935971 	-3.66127 0.565021 1.57007 	1. 0. 0.
+1
+  -4.75167 -1.93408 0.935971 	-4.17327 -2.53828 -0.635229 	-6.27887 0.926121 0.589671 	1. 0. 0.
+1
+  -2.45927 -1.63678 1.72157 	-4.75167 -1.93408 0.935971 	-3.90927 -3.49908 0.839771 	1. 0. 0.
+9
+#  terminating special property
+# current virtual sphere
+8
+  25.0    0.6     -1.0 -1.0 -1.0     0.2        0 0 0 0
+2
+  -3.70673 -2.35665 1.16577	5	1 0 0
+9
+  terminating special property
