Add tests for sla support and pad creation

tests/data/cube_with_concave_hole_enlarged_standing.obj

@@ -0,0 +1,112 @@
+####
+#
+# OBJ File Generated by Meshlab
+#
+####
+# Object cube_with_concave_hole_enlarged.obj
+#
+# Vertices: 24
+# Faces: 48
+#
+####
+vn 0.000000 0.000000 -1.570796
+v 68.557083 17.865835 0.000000
+vn 0.000000 0.000000 -1.107149
+v 52.402916 17.865835 0.000000
+vn 0.000000 -0.463648 0.000000
+v 68.557083 17.865835 32.308331
+vn 0.000000 -1.570796 0.000000
+v 52.402916 17.865835 32.308331
+vn 2.356194 0.000000 0.000000
+v 68.557083 25.942917 24.231247
+vn 1.570796 0.000000 0.000000
+v 68.557083 50.174164 24.231247
+vn 2.034444 0.000000 0.000000
+v 68.557083 42.097084 8.077083
+vn 2.677945 0.000000 0.000000
+v 68.557083 34.020000 24.231247
+vn 0.000000 1.570796 0.000000
+v 68.557083 50.174164 0.000000
+vn 0.000000 1.570796 0.000000
+v 52.402916 50.174164 24.231247
+vn -0.321750 0.000000 0.000000
+v 52.402916 25.942917 8.077083
+vn -1.570796 0.000000 0.000000
+v 52.402916 42.097084 32.308331
+vn -0.321751 0.000000 0.000000
+v 52.402916 50.174164 0.000000
+vn -2.356194 0.000000 0.000000
+v 52.402916 42.097084 8.077083
+vn -0.785398 0.000000 0.000000
+v 52.402916 42.097084 16.154165
+vn 0.000000 0.000000 0.588003
+v 68.557083 42.097084 32.308331
+vn 0.000000 1.107149 0.000000
+v 52.402916 42.097084 24.231247
+vn 0.000000 1.570796 0.000000
+v 68.557083 42.097084 24.231247
+vn 0.000000 0.000000 1.570796
+v 68.557083 25.942917 8.077083
+vn 0.000000 -0.463647 0.000000
+v 68.557083 42.097084 16.154165
+vn 0.000000 0.000000 -1.570796
+v 68.557083 34.020000 16.154165
+vn 0.000000 0.000000 -0.463648
+v 52.402916 34.020000 16.154165
+vn 0.000000 0.000000 -1.570796
+v 52.402916 34.020000 24.231247
+vn 0.000000 0.000000 -0.463648
+v 52.402916 25.942917 24.231247
+# 24 vertices, 0 vertices normals
+
+f 1//1 2//2 9//9
+f 9//9 2//2 13//13
+f 2//2 1//1 3//3
+f 4//4 2//2 3//3
+f 19//19 5//5 3//3
+f 18//18 9//9 6//6
+f 7//7 9//9 20//20
+f 20//20 8//8 21//21
+f 1//1 9//9 7//7
+f 1//1 7//7 19//19
+f 1//1 19//19 3//3
+f 20//20 9//9 18//18
+f 3//3 5//5 8//8
+f 3//3 8//8 18//18
+f 8//8 20//20 18//18
+f 16//16 3//3 18//18
+f 9//9 13//13 6//6
+f 6//6 13//13 10//10
+f 11//11 2//2 4//4
+f 23//23 24//24 4//4
+f 14//14 13//13 11//11
+f 12//12 17//17 4//4
+f 24//24 11//11 4//4
+f 13//13 2//2 11//11
+f 15//15 13//13 14//14
+f 17//17 13//13 15//15
+f 17//17 23//23 4//4
+f 17//17 15//15 23//23
+f 17//17 10//10 13//13
+f 22//22 23//23 15//15
+f 4//4 3//3 16//16
+f 12//12 4//4 16//16
+f 12//12 16//16 17//17
+f 17//17 16//16 18//18
+f 6//6 10//10 17//17
+f 18//18 6//6 17//17
+f 7//7 14//14 11//11
+f 19//19 7//7 11//11
+f 20//20 15//15 14//14
+f 7//7 20//20 14//14
+f 21//21 22//22 20//20
+f 20//20 22//22 15//15
+f 22//22 21//21 8//8
+f 23//23 22//22 8//8
+f 23//23 8//8 24//24
+f 24//24 8//8 5//5
+f 24//24 5//5 11//11
+f 11//11 5//5 19//19
+# 48 faces, 0 coords texture
+
+# End of File