/usr/share/dx/samples/data/solid.dx is in dxsamples 4.2.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Example of faces, loops and edges components.
#
#
# Positions array. These are a list of all the verticies of the object;
# no particular order is required here.
#
object "position list" class array type float rank 1 shape 3 items 12
data follows
5.0 0.0 1.0 # point number 0
5.0 0.0 5.0 # 1
3.0 5.0 5.0 # 2
4.5 0.0 1.5 # 3
4.5 0.0 4.5 # 4
3.0 4.0 5.0 # 5
4.0 0.5 5.0 # 6
1.5 0.0 1.5 # 7
1.5 0.0 4.5 # 8
2.0 0.5 5.0 # 9
1.0 0.0 5.0 # 10
1.0 0.0 1.0 # 11
#
# Edges array. This is a list of connected points, by point number. All
# the edges associated with a particular face need to be listed together.
# If points 10, 3 and 7 make a triangle, the list is "10 3 7" and the 10
# is not repeated. If there is a hole in the triangle, the edges which
# describe the hole must be listed right before or right after.
#
object "edge list" class array type int rank 0 items 23 data follows
1 0 2 # edge point index 0
10 1 2 # 3
9 6 5 # 6
10 1 0 11 # 9
8 4 3 7 # 13
11 10 2 # 17
0 11 2 # 20
attribute "ref" string "positions"
#
# Loops array. This is a list of connected edges, by edge number. Each
# number is the edge index of where the next loop starts.
#
object "loop list" class array type int rank 0 items 7 data follows
0 # loop index 0
3 # 1
6 # 2
9 # 3
13 # 4
17 # 5
20 # 6
attribute "ref" string "edges"
#
# Faces array. This is list of which loops make faces. If there are
# no holes in the faces, this is list of all loops. If two or more
# loops actually describe the outside edges and inside hole edges of
# a face, then this list contains the starting loop numbers of the
# list of loops making up a face.
#
object "face list" class array type int rank 0 items 5 data follows
0
1
3
5
6
attribute "ref" string "loops"
#
# Colors array. To get flat shaded surfaces, there should be one color
# per face, and one normal per face. These are Red,Green,Blue values
# between 0 (no color) and 1 (fully saturated).
#
object "color list" class array type float rank 1 shape 3 items 5 data follows
0.6 0.3 0.6
0.8 0.8 0.1
0.9 0.4 0.9
0.4 0.8 0.7
0.8 0.8 0.8
attribute "dep" string "faces"
#
# Normals array.
#
object "normal list" class array type float rank 1 shape 3 items 5
data follows
0.93 0.37 0.0
0.0 0.0 1.0
0.0 1.0 0.0
-0.93 0.37 0.0
0.0 -0.63 -0.78
attribute "dep" string "faces"
#
#
# Field definition to put the arrays together.
#
object "solid" class field
component "positions" "position list"
component "edges" "edge list"
component "loops" "loop list"
component "faces" "face list"
component "colors" "color list"
component "normals" "normal list"
end
#
# script to look at the object:
#
# g = Import("solid.dx");
# a = AutoCamera(g, [0.2 0.1 1.0]);
# Display(g, a);
#
# to look at just the connections:
#
# s = ShowConnections(g);
# Display(s, a);
#
#
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