An understanding of the orientation of the co-ordinate axes is essential for authoring a part for LDraw. For reference within this page the axes and their direction is shown in this diagram.

Two dimensional

rect.dat

This primitive represents a rectangle in the {x,z} plane and the four edges that bound it. Its origin is at its centre and by default has a size of 2LDu in each of the {x} and {z} dimensions. To avoid matrix arithmetic problems in some renderers, the third dimension ({y} in the default orientation) must be given a non-zero scaling factor.

1 16  0 0 0  5 0 0   0 1 0   0 0 20  rect.dat  

rect3.dat

This primitive represents a rectangle in the {x,z} plane but excludes one edge {-z}. Its origin is at its centre and by default has a size of 2LDu in each of the {x} and {z} dimensions.

rect2p.dat

This primitive represents a rectangle in the {x,z} plane but excludes two parallel edges ({+x} and {-x}). Its origin is at its centre and by default has a size of 2LDu in each of the {x} and {z} dimensions.

rect2a.dat

This primitive represents a rectangle in the {x,z} plane but excludes two adjacent edges ({-x} and {-z}). Its origin is at its centre and by default has a size of 2LDu in each of the {x} and {z} dimensions.

rect1.dat

This primitive represents a rectangle in the {x,z} plane but include only the one {+x} edge. Its origin is at its centre and by default has a size of 2LDu in each of the {x} and {z} dimensions.

recte3.dat

This primitive represents three edges of a rectangle in the {x,z} plane. Its origin is at its centre and by default has a size of 2LDu in each of the {x} and {z} dimensions.

recte4.dat

This primitive represents the four edges of a rectangle in the {x,z} plane. Its origin is at its centre and by default has a size of 2LDu in each of the {x} and {z} dimensions.

Three dimensional

box.dat

This primitive is used to define a cuboid. Its origin is the centre of the cuboid and by default has a size of 2LDu in each of the three dimensions.

box5.dat

This primitive represents a cuboid missing the top {-y} face. Its origin is the centre of the (missing) top face and by default has a size of 2LDu in each of the {x} and {z} dimensions and 1LDu in the {y} dimension.

box5-1.dat

This primitive represents a cuboid missing the top {-y} face and one edge {-z} of that. Its origin is the centre of the (missing) top face and by default has a size of 2LDu in each of the {x} and {z} dimensions and 1LDu in the {y} dimension.

box5-2p.dat

This primitive represents a cuboid missing the top {-y} face and two of the four edges surrounding that. Its origin is the centre of the (missing) top face and by default has a size of 2LDu in each of the {x} and {z} dimensions and 1LDu in the {y} dimension.

box5-4a.dat

This primitive represents a cuboid missing the top {-y} face and the four edges surrounding that. Its origin is the centre of the (missing) top face and by default has a size of 2LDu in each of the {x} and {z} dimensions and 1LDu in the {y} dimension.

box5-12.dat

This primitive represents a cuboid missing the top {-y} face and all edges. Its primary use is for sticker parts. Its origin is the centre of the (missing) top face and by default has a size of 2LDu in each of the {x} and {z} dimensions and 1LDu in the {y} dimension.

box4.dat

This primitive represents a cuboid missing the top {-y} and bottom {+y} faces. Its origin is the centre of the (missing) top face and by default has a size of 2LDu in each of the {x} and {z} dimensions and 1LDu in the {y} dimension.

box4o4a.dat

This primitive represents a cuboid missing the top {-y} and bottom {+y} faces, and missing the edges of the bottom face. Its origin is the centre of the (missing) top face and by default has a size of 2LDu in each of the {x} and {z} dimensions and 1LDu in the {y} dimension.

box4o8a.dat

This primitive represents a cuboid missing the top {-y} and bottom {+y} faces, and missing the edges of the top and bottom face. Its origin is the centre of the (missing) top face and by default has a size of 2LDu in each of the {x} and {z} dimensions and 1LDu in the {y} dimension.

box4t.dat

This primitive represents a cuboid missing the top {-y} and front {-z} faces, but with all its edges. Its origin is the centre of the (missing) top face and by default has a size of 2LDu in each of the {x} and {z} dimensions and 1LDu in the {y} dimension.

box4-1.dat

This primitive represents a cuboid missing the top {-y} and front {-z} faces and the edge between those faces. Its origin is the centre of the (missing) top face and by default has a size of 2LDu in each of the {x} and {z} dimensions and 1LDu in the {y} dimension.

box4-2p.dat

This primitive represents a cuboid missing the top {-y} and bottom {+y} faces, and missing two edges of the top face - the intersection of the two missing faces and the opposite edge. Its origin is the centre of the (missing) top face and by default has a size of 2LDu in each of the {x} and {z} dimensions and 1LDu in the {y} dimension.

box4-3p.dat

This primitive represents a cuboid missing the top {-y} and bottom {+y} faces, and missing three edges of the missing faces. Its origin is the centre of the (missing) top face and by default has a size of 2LDu in each of the {x} and {z} dimensions and 1LDu in the {y} dimension.

box4-4a.dat

This primitive represents a cuboid missing the top {-y} and front {-z} faces and all the edges of the missing front face. Its origin is the centre of the (missing) top face and by default has a size of 2LDu in each of the {x} and {z} dimensions and 1LDu in the {y} dimension.

box4-7a.dat

This primitive represents a cuboid missing the top {-y} and front {-z} faces and all the edges of both missing faces. Its origin is the centre of the (missing) top face and by default has a size of 2LDu in each of the {x} and {z} dimensions and 1LDu in the {y} dimension.

box3-3.dat

This primitive represents a cuboid missing the top {-y}, front {-z} and left {-x} faces and excludes the three edges which do not bound the included faces. Its origin is the centre of the cuboid and by default has a size of 2LDu in each of the {x}, {y} and {z} dimensions.

box3-5a.dat

This primitive represents a cuboid missing the top {-y}, front {-z} and left {-x} faces and includes the three internal edges and the outer edges except those on the left {-z}. Its origin is the centre of the (missing) top face and by default has a size of 2LDu in each of the {x}, {y} and {z} dimensions.

box3-7a.dat

This primitive represents a cuboid missing the top {-y}, front {-z} and left {-x} faces and includes the three internal edges but only the outer edges at the top (-y). Its origin is the centre of the (missing) top face and by default has a size of 2LDu in each of the {x}, {y} and {z} dimensions.

box3-9a.dat

This primitive represents a cuboid missing the top {-y}, front {-z} and left {-x} faces and includes only the three internal edges. Its origin is the centre of the (missing) top face and by default has a size of 2LDu in each of the {x}, {y} and {z} dimensions.

box3-12.dat

This primitive represents a cuboid missing the top {-y}, front {-z} and left {-x} faces but excludes all edges. Its origin is the centre of the (missing) top face and by default has a size of 2LDu in each of the {x}, {y} and {z} dimensions.

box3u2p.dat

This primitive represents a cuboid missing the top {-y} and left {-x} and right {+x} faces and excludes the top edges of the left {-x} and right {+x} faces. Its origin is the centre of the (missing) top face and by default has a size of 2LDu in each of the {x} and {z} dimensions and 1LDu in the {y} dimension.

box3u4p.dat

This primitive represents a cuboid missing the top {-y} and left {-x} and right {+x} faces and excludes the topand bottom edges of the left {-x} and right {+x} faces. Its origin is the centre of the (missing) top face and by default has a size of 2LDu in each of the {x} and {z} dimensions and 1LDu in the {y} dimension.

box3u4a.dat

This primitive represents a cuboid missing the top {-y} and left {-x} and right {+x} faces and excludes the edges of the missing top face. Its origin is the centre of the (missing) top face and by default has a size of 2LDu in each of the {x} and {z} dimensions and 1LDu in the {y} dimension.

box3u5p.dat

This primitive represents a cuboid missing the top {-y} and left {-x} and right {+x} faces and excludes the top edge of the left {-x} face and all edges of the right {+x} face. Its origin is the centre of the (missing) top face and by default has a size of 2LDu in each of the {x} and {z} dimensions and 1LDu in the {y} dimension.

box3u6.dat

This primitive represents a cuboid missing the top {-y} and left {-x} and right {+x} faces and excludes the top and bottome edges of the right {+x} face and all edges of the left {-x} face. Its origin is the centre of the (missing) top face and by default has a size of 2LDu in each of the {x} and {z} dimensions and 1LDu in the {y} dimension.

box3u7a.dat

This primitive represents a cuboid missing the top {-y} and left {-x} and right {+x} faces and excludes the edges of the missing top (-y) and right (+x) faces. Its origin is the centre of the (missing) top face and by default has a size of 2LDu in each of the {x} and {z} dimensions and 1LDu in the {y} dimension.

box3u12.dat

This primitive represents a cuboid missing the top {-y} and left {-x} and right {+x} faces and excludes all the edges. Its origin is the centre of the (missing) top face and by default has a size of 2LDu in each of the {x} and {z} dimensions and 1LDu in the {y} dimension.

box3u8p.dat

This primitive represents a cuboid missing the top {-y} and left {-x} and right {+x} faces and excludes all the edges of the left {-x} and right {+x} faces. Its origin is the centre of the (missing) top face and by default has a size of 2LDu in each of the {x} and {z} dimensions and 1LDu in the {y} dimension.

box3u10p.dat

This primitive represents a cuboid missing the top {-y} and left {-x} and right {+x} faces and excludes all the edges except the two betweenthe faces. Its origin is the centre of the (missing) top face and by default has a size of 2LDu in each of the {x} and {z} dimensions and 1LDu in the {y} dimension.

box2-5.dat

This primitive represents a cuboid missing the top {-y}, front {-z}, left {-x} and right {+x} faces and excludes all the edges which do not bound the included faces. Its origin is the centre of the cuboid and by default has a size of 2LDu in each of the {x}, {y} and {z} dimensions.

box2-7.dat

This primitive represents a cuboid missing the top {-y}, front {-z}, left {-x} and right {+x} faces and excludes all the edges except that at the join between the two faces and those along the left {-x} and right {+x} sides. Its origin is the centre of the cuboid and by default has a size of 2LDu in each of the {x}, {y} and {z} dimensions.

box2-9.dat

This primitive represents a cuboid missing the top {-y}, front {-z}, left {-x} and right {+x} faces and excludes all the edges except that at the join between the two faces and those along the right {+x} sides. Its origin is the centre of the cuboid and by default has a size of 2LDu in each of the {x}, {y} and {z} dimensions.

box2-9p.dat

This primitive represents a cuboid missing the top {-y}, front {-z}, left {-x} and right {+x} faces and excludes all the edges except that at the join between the two faces and those parallel to that. Its origin is the centre of the cuboid and by default has a size of 2LDu in each of the {x}, {y} and {z} dimensions.

box2-11.dat

This primitive represents a cuboid missing the top {-y}, front {-z}, left {-x} and right {+x} faces and excludes all the edges except that at the join between the two faces. Its origin is the centre of the cuboid and by default has a size of 2LDu in each of the {x}, {y} and {z} dimensions.

box0.dat

This primitive is used to define the frame a cuboid. Its origin is the centre of the cuboid and by default has a size of 2LDu in each of the three dimensions.

tri3.dat

This primitive represents a triangular prism missing the top {-y} and bottom {+y} faces but including all edges. The left {-x} and front {-z} faces are perpendicular. Its origin is the right-angle corner of the (missing) top face and by default has a size of 1LDu in each of the {x} and {z} dimensions and 1LDu in the {y} dimension.

tri3a1.dat

tri3a4.dat

tri3u1.dat

This primitive represents a triangular prism missing the left {-x} and front {-z} faces. Its origin is the right-angle corner of the top face and by default has a size of 1LDu in each of the {x} and {z} dimensions and 1LDu in the {y} dimension.

tri3u3.dat

This primitive represents a triangular prism missing the left {-x} and front {-z} faces, the edge where they would join and one edge of each of the triangles. Its origin is the right-angle corner of the top face and by default has a size of 1LDu in each of the {x} and {z} dimensions and 1LDu in the {y} dimension.

boxjcylr.dat


This suite of primitives are used to model the intersection between a box and cylinders of different radii. The box has a fixed width of 2LDu and the cylinder radius is denoted by the r in the filename.

Currently available primitives :
Regular resolution (boxjcylr) : 4

1-8disc

1-4disc

2-4disc

3-4disc

4-4disc

Two dimensional

n-fedge.dat

This suite of primitives are used for edges which comprise an entire or part circle.

Currently available primitives :
Regular resolution (n-f) : 1-16, 1-8, 3-16, 1-4, 5-16, 3-8, 7-16, 2-4, 9-16, 5-8, 11-16, 3-4, 7-8, 4-4
High resolution (n-f) : 1-48, 1-24, 1-16, 1-12, 5-48, 1-8, 7-48, 1-6, 3-16, 5-24, 1-4, 7-24, 5-16, 1-3, 3-8, 19-48, 5-12, 7-16, 11-24, 2-4, 5-8, 2-3, 3-4, 4-4

n-fdisc.dat

This suite of primitives are used for surfaces which comprise an entire or part circle.

Currently available primitives :
Regular resolution (n-f) : 1-16, 1-8, 3-16, 1-4, 5-16, 3-8, 7-16, 2-4, 5-8, 3-4, 7-8, 4-4
High resolution (n-f) : 1-12, 5-48, 1-8, 7-48, 1-6, 3-16, 1-4, 2-4, 4-4

n-fndis.dat

This suite of primitives pad their matching n-fdisc.dat primitives out to the bounding square. They are used to integrate circular elements into rectilinear elements.

Currently available primitives :
Regular resolution (n-f) : 1-16, 1-8, 3-16, 1-4, 5-16, 3-8, 7-16, 2-4, 3-4, 7-8, 4-4
High resolution (n-f) : 1-24, 1-16, 1-12, 5-48, 1-8, 7-48, 1-6, 3-16, 5-24, 1-4, 1-3, 2-4, 4-4

n-fchrd.dat

This suite of primitives are used for surfaces which comprise part of a circle enclosed by the arc of its circumference and its chord. Note that the bounding circle in the image is for context only - only the grey segment is generated by the 1-4chrd primitive.

Currently available primitives :
Regular resolution (n-f) : 1-16 (see note), 1-8, 3-16, 1-4, 5-16, 3-8, 7-16, 2-4, 5-8, 3-4, 13-16, 7-8
High resolution (n-f) : 1-24, 1-16, 1-12, 1-8, 7-48, 1-6, 3-16, 5-24, 7-24, 1-3, 3-8, 19-48, 5-12, 1-4, 1-3

Note: The regular resolution 1-16chrd.dat is a special case, see Primitive Substitution Adapters for more information

1-16chrd.dat and n-fering.dat

This suite of primitives are used correct for gaps that form between curved primitives and normal geometry in editors that utilize primitive substitution. This is a special case used on the inside of a curved primitive where it joins geometry that cannot make use of a curved primitive. The chrd files themselves are simply a reference to empty.dat, which under normal circumstances does not draw anything. However, in tools that support primitive substitution, the curved primitive it is attached to would normally in this case create a gap when rendered using more than 16 points to form a circle. In that case, the substituted version of these normally empty primitives would fill in the gap between the curve and the other geometry.

To "see" these primitives, the editor in use must utilize primitive substitution. Then one of the following can be done:

• set the curve quality to a level high enough to see the gaps reappear
• For LDView 4.4 or later, in the Model Tree dialog, you can search for them (for example, "ering"), and if you have it set to highlight, then when you select one, it will be highlighted in the 3D view.
• Manually recolor the primitive in question to a color that contrasts with the colors that surround it

n-ftang.dat

This suite of primitives are used to pad a 16-sided polygon to a circumscribing 16-sided polygon whose edges are tangential to the inner polygon. Note that the bounding circle in the image is for context only - only the grey segment is generated by the 1-4tang primitive.

Currently available primitives :
Regular resolution (n-f) : 1-8, 1-4

n-fringr.dat
n-frinrr.dat
n-ffrinr.dat
n-ffrirr.dat
nn-ffrir.dat
ringr.dat(deprecated name)
ringrr.dat(deprecated name)

This suite of primitives are used to generate circular rings or part rings. The numeric suffix r in the filename indicates the inner radius of the ring - the outer radius is 1LDu greater. For example a n-f4-4ring4 primitive would create a ring with an inner radius of 4LDu and an outer radius of 5LDu.

Currently available primitives :
Regular resolution :
   r=1 : 1-16rin1, 1-8ring1, 3-16rin1, 1-4ring1, 3-8ring1, 7-16rin1, 2-4ring1, 5-8ring1, 3-4ring1, 7-8ring1, 4-4ring1
   r=2 : 1-16rin2, 1-8ring2, 3-16rin2, 1-4ring2, 5-16rin2, 3-8ring2, 7-16ring2, 2-4ring2, 5-8ring2, 3-4ring2, 7-8ring2, 4-4ring2
   r=3 : 1-16rin3, 1-8ring3, 3-16rin3, 1-4ring3, 5-16rin3, 3-8ring3, 7-16rin3, 2-4ring3, 5-8ring3, 3-4ring3, 7-8ring3, 4-4ring3
   r=4 : 1-16rin4, 1-8ring4, 3-16rin4, 1-4ring4, 3-8ring4, 7-16rin4, 2-4ring4, 5-8ring4, 3-4ring4, 4-4ring4
   r=5 : 1-8ring5, 3-16rin5, 1-4ring5, 5-16rin5, 3-8ring5, 2-4ring5, 3-4ring5, 4-4ring5
   r=6 : 1-8ring6, 3-16rin6, 1-4ring6, 3-8ring6, 2-4ring6, 5-8ring6, 3-4ring6, 4-4ring6
   r=7 : 1-8ring7, 3-16rin7, 1-4ring7, 3-8ring7, 2-4ring7, 3-4ring7, 4-4ring7
   r=8 : 1-8ring8, 3-16rin8, 1-4ring8, 3-8ring8, 2-4ring8, 3-4ring8, 7-8ring8, 4-4ring8
   r=9 : 1-8ring9, 3-16rin9, 1-4ring9, 3-8ring9, 7-16ring9, 2-4ring9, 3-4ring9, 7-8ring9, 4-4ring9
   r=10 : 1-8rin10, 1-4rin10, 3-8rin10, 2-4rin10, 5-8ring10, 3-4rin10, 4-4rin10
   r=11 : 1-16ring11, 3-16ring11, 1-4rin11, 2-4rin11, 4-4rin11
   r=12 : 1-8ring12, 3-16ring12, 1-4rin12, 5-16ring12, 3-8rin12, 2-4rin12, 7-8rin12, 4-4rin12
   r=13 : 3-16ring13, 1-4rin13, 3-8rin13, 2-4rin13, 4-4rin13
   r=14 : 3-16ring14, 1-4rin14, 2-4rin14, 3-4rin14, 4-4rin14
   r=15 : 1-8rin15, 1-4rin15, 3-8rin15, 2-4rin15, 7-8rin15, 4-4rin15
   r=16 : 1-4rin16, 3-8rin16, 2-4rin16, 7-8rin16, 4-4rin16
   r=17 : 1-8rin17, 1-4rin17, 7-16ring17, 2-4rin17, 4-4rin17
   r=18 : 1-8rin18, 1-4rin18, 3-8rin18, 2-4rin18, 4-4rin18
   r=19 : 1-16ring19, 1-8rin19, 1-4rin19, 2-4ring19, 4-4rin19
   r=20 : 1-4rin20, 4-4rin20
   r=21 : 4-4rin21
   r=22 : 2-4rin22, 3-4rin22, 4-4rin22
   r=23 : 1-8rin23, 1-4rin23, 2-4rin23, 4-4rin23
   r=24 : 3-16ring24, 1-4rin24, 3-8rin24, 2-4rin24, 4-4rin24
   r=25 : 2-4rin25, 4-4rin25
   r=26 : 4-4rin26
   r=27 : 1-4ring27
   r=28 : 1-4rin28
   r=29 : 4-4rin29
   r=30 : 2-4rin30, 4-4rin30
   r=31 : 4-4rin31
   r=32 : 4-4rin32
   r=33 : 4-4rin33
   r=34 : 1-4rin34, 4-4rin34
   r=36 : 4-4rin36
   r=37 : 2-4ring37, 4-4rin37
   r=38 : 1-4rin38, 4-4rin38
   r=39 : 1-8rin39, 1-4rin39, 7-8rin39, 4-4rin39
   r=40 : 7-8rin40, 4-4rin40
   r=43 : 2-4ring43, 4-4rin43
   r=44 : 2-4ring44, 4-4rin44
   r=45 : 4-4rin45
   r=46 : 4-4rin46
   r=47 : 4-4rin47
   r=48 : 1-4rin48, 4-4rin48
   r=49 : 1-4rin49
   r=50 : 1-4rin50, 4-4rin50
   r=51 : 4-4rin51
   r=52 : 2-4rin52, 4-4rin52
   r=57 : 4-4rin57
   r=77 : 4-4rin77
   r=78 : 4-4rin78
   r=79 : 1-4ring79, 4-4rin79
   r=85 : 4-4rin85
   r=101 : 4-4ring101
High resolution :
   r=1 : 1-12rin1, 1-8ring1, 1-6ring1, 1-4ring1, 2-4ring1
   r=2 : 1-12rin2, 1-8ring2, 1-4ring2, 1-3ring2, 2-4ring2, 4-4ring2
   r=3 : 1-24rin3, 1-16rin3, 1-12ring3, 1-8ring3, 1-6ring3, 1-4ring3, 7-16rin3, 2-4ring3, 4-4ring3
   r=4 : 1-24rin4, 1-12ring4, 5-48rin4, 1-8ring4, 1-4ring4, 7-24rin4, 2-4ring4, 4-4ring4
   r=5 : 1-24rin5, 1-12rin5, 5-48rin5, 1-8ring5, 7-48rin5, 1-6ring5, 5-24ring5, 1-4ring5, 2-4ring5, 4-4ring5
   r=6 : 1-48rin6, 1-24rin6, 1-12rin6, 1-8ring6, 5-24ring6, 2-4ring6, 5-6ring6, 4-4ring6
   r=7 : 1-24rin7, 1-8ring7, 1-6ring7, 3-16rin7, 5-24rin7, 2-3ring7, 3-4ring7, 4-4ring7
   r=8 : 1-16rin8, 1-12rin8, 1-8ring8, 1-6ring8, 3-16rin8, 1-4ring8, 4-4ring8
   r=9 : 1-48rin9, 1-24rin9, 1-12rin9, 5-48rin9, 1-8ring9, 5-24rin9, 1-6ring9, 1-4ring9, 1-3ring9, 2-4ring9, 4-4ring9
   r=10 : 7-48ring10, 1-4rin10, 5-24ring10, 4-4rin10
   r=11 : 1-24ring11, 1-4rin11, 2-4rin11, 4-4rin11
   r=12 : 1-12ring12, 1-4ring12, 1-6rin12, 2-4rin12, 4-4rin12
   r=13 : 1-16ring13, 1-6rin13, 5-24ring13, 1-4rin13, 5-12ring13, 11-24ring13, 3-4rin13, 4-4rin13
   r=14 : 1-16ring14, 1-8rin14, 1-6rin14, 5-12ring14, 3-4rin14, 4-4rin14
   r=15 : 1-12ring15, 1-4rin15, 4-4rin15
   r=16 : 1-8rin16, 1-6rin16, 1-4rin16, 7-16ring16, 2-4rin16, 3-4rin16, 5-6rin16, 4-4rin16
   r=17 : 1-12ring17, 1-6rin17, 5-24ring17, 1-4rin17, 1-3rin17, 2-4rin17, 4-4rin17
   r=18 : 1-6rin18, 5-24ring18, 4-4rin18
   r=19 : 1-24ring19, 1-16ring19, 1-6rin19, 11-48ring19, 1-4rin19, 2-4rin19, 4-4rin19
   r=20 : 1-12ring20, 1-8rin20, 5-24ring20, 1-4rin20, 4-4rin20
   r=21 : 1-16ring21, 1-4rin21, 4-4rin21
   r=22 : 1-4rin22, 4-4rin22
   r=23 : 1-4rin23
   r=24 : 5-24ring24, 1-4rin24, 4-4rin24
   r=25 : 1-4rin25, 4-4rin25
   r=26 : 1-4rin26, 4-4rin26
   r=27 : 1-4rin27, 4-4rin27
   r=28 : 1-8rin28, 5-24ring28, 4-4rin28
   r=29 : 1-24ring29, 1-16ring29, 1-12ring29, 1-6ring29, 1-4rin29, 5-24ring29, 4-4rin29
   r=30 : 1-4rin30, 4-4rin30
   r=31 : 1-4rin31, 2-4rin31
   r=32 : 1-4rin32, 5-48ring32
   r=33 : 1-4rin33, 4-4rin33
   r=34 : 1-4rin34, 4-4rin34
   r=35 : 1-8rin35, 5-24ring35, 1-4rin35, 4-4ring35
   r=36 : 1-4rin36
   r=37 : 1-4rin37, 2-4ring37, 4-4rin37
   r=38 : 1-12ring38
   r=39 : 1-24ring39, 1-12ring39, 1-8rin39, 1-6ring39, 3-16ring39, 1-4rin39, 4-4ring39
   r=40 : 1-4rin40, 11-48ring40, 2-4ring40
   r=41 : 1-4rin41, 4-4rin41
   r=42 : 1-12ring42, 1-6ring42, 4-4rin42
   r=43 : 1-48ring43, 1-16ring43, 1-6ring43, 4-4ring43
   r=44 : 4-4ring44
   r=45 : 1-4rin45
   r=47 : 1-6rin47, 4-4rin47
   r=48 : 1-4rin48
   r=49 : 4-4rin49
   r=50 : 1-6rin50, 4-4rin50
   r=51 : 1-4rin51
   r=52 : 11-24ring52, 4-4rin52
   r=53 : 4-4rin53
   r=54 : 4-4rin54
   r=56 : 1-8rin56
   r=60 : 1-24ring60, 1-16ring60
   r=63 : 1-4rin63
   r=64 : 1-4rin64
   r=65 : 1-4rin65
   r=70 : 1-4rin70
   r=71 : 1-4rin71, 4-4ring71
   r=78 : 1-12ring78
   r=80 : 7-48ring80, 1-6ring80
   r=82 : 1-4rin82
   r=83 : 1-4rin83
   r=97 : 4-4rin97
   r=99 : 1-6ring99, 4-4ring99
   r=100 : 4-4ring100
   r=179 : 1-4ring179
   r=240 : 2-4ring240

n-faring.dat

This suite of primitives are used to interface between high resolution (48-segment) circular primitives and normal resolution (16-segment) circluar primitives.

Currently available primitives :
Regular resolution (n-faring) : 4-4
High resolution (n-faring) : 1-4

Three dimensional

n-fcyli.dat
n-fcyli2.dat

This suite of primitives are used to generate cylinders or part cylinders. These are provided in two forms - with conditional lines (n-fcyli) or without conditional lines (n-fcyli2). In almost all circumstances the "cyli" version should be used. The "cyli2" versions are for very special cases and their use for the rounded corners of stickers is no longer appropriate.

Currently available primitives - with conditional lines :
Regular resolution (n-fcyli) : 1-16, 1-8, 3-16, 1-4, 5-16, 3-8, 7-16, 2-4, 5-8, 11-16, 3-4, 7-8, 4-4
High resolution (n-fcyli) : 1-48, 1-24, 1-16, 1-12, 5-48, 1-8, 7-48, 1-6, 3-16, 5-24, 1-4, 7-24, 1-3, 3-8, 5-12, 7-16, 11-24, 2-4, 5-8, 2-3, 3-4, 7-8, 4-4

Currently available primitives - without conditional lines :
Regular resolution (n-fcyli2) : 3-16, 1-4, 5-16, 2-4, 3-8, 4-4
High resolution (n-fcyli2) : 1-4, 2-4, 4-4

n-fcylo.dat

This suite of primitives are used to generate cylinders or part cylinders with edges around the lower and upper surfaces.

Currently available primitives :
Regular resolution (n-fcylo) : 1-16, 1-8, 3-16, 1-4, 5-16, 3-8, 7-16, 2-4, 5-8, 3-4, 7-8, 4-4
High resolution (n-fcylo) : 1-48, 1-24, 1-16, 1-12, 5-48, 1-8, 7-48, 3-16, 5-24, 1-4, 1-3, 2-4, 4-4

n-fcylc.dat
n-fcylc2.dat

This suite of primitives are used to generate cylinders or part cylinders with the upper surface closed.

Currently available primitives - with conditional lines and top edge line:
Regular resolution (n-fcylc) : 1-4, 2-4, 3-4, 4-4
High resolution (n-fcylc) : 2-4, 4-4

Currently available primitives - without conditional lines or top or bottom edge line:
Regular resolution (n-fcylc2) : 1-4, 4-4
High resolution (n-fcylc2) : 4-4

Currently available primitives - with conditional lines, but without top and bottom edge lines:
Regular resolution (n-fcylc3) : 1-4, 4-4
High resolution (n-fcylc3) :

n-fcyls.dat
n-fcyls2.dat

1-4cyls.dat

3-8cyls.dat

2-4cyls.dat

1-4cyls2.dat

These primitives are used to generate cylinders or part cylinders which are truncated by a plane which is not perpendicular to the axis of the cylinder. The default angle of the plane is 45 degress.

These primitives are notoriously difficult to describe and the user is encouraged to experiment in order to gain a full understanding of their geometry. One technique is to open the primitive in L3Lab, increase the zoom to 12800, deselect BFC and choose random colours. Selecting Show Axes also helps.

The 2-4cyls.dat primitive is orientated with the perpendicular bounding plane at the top {-y} and the angled bounding plane at the bottom {+y}. In common with the other 2-4xxxx.dat primitives, the {+z} semicircle is represented. By default the truncation plane is y=x-1. The 1-4cyls.dat and 3-8cyls.dat primitives are sub-sections of 2-4cyls.dat

The 1-4cyls2.dat primitive is orientated with the perpendicular bounding plane at the top {-y} and the angled bounding plane at the bottom {+y}. Unlike the other 1-4xxxx.dat primitives, the {-x,+z} quadrant is represented. The truncation plane is y=x.

The following observations may help :

• 1-4cyls and 1-4cyls2 are complements. If you put them together correctly they make a 1-4cyli.

  1 16  0 0 0  1 0 0  0 1 0  0 0 1  1-4cyls.dat

  1 16  0 1 0  -1 0 0  0 -1 0  0 0 1  1-4cyls2.dat

• 1-4cyls2 is actually hidden in 2-4cyls, which could be constructed like

  1 16  0 0 0  1 0 0  0 1 0  0 0 1  1-4cyls.dat

  1 16  0 0 0  0 0 -1  0 1 0  1 0 0  1-4cyli.dat

  1 16  0 1 0  1 0 0  0 1 0  0 0 1  1-4cyls2.dat

n-fcylse.dat

This suite of primitives are similar to the n-fcyls primitive, but with the edge along the angled plane included.

Currently available primitives :
Regular resolution (n-f) : 4-4

cyljrxs.dat


This suite of primitives are used to model the intersection between two cylinders of different radii.

Currently available primitives :
Regular resolution (rxs) : 4x6, 4x7, 4x8, 4x9, 4x10, 5x9

n-fcylrsphs.dat


This suite of primitives are used to model the intersection between a cylinder and a sphere of a different radius.

Currently available primitives :
Regular resolution 1:2 (n-f) : 4-4cyl1sph2

n-fconr.dat
n-fconrr.dat

This suite of primitives are used to generate circular cones or part cones. The numeric suffix r in the filename indicates the inner radius of the cone - the outer radius is 1LDu greater. By default the cone is 1LDu high in the {+y} dimension with the origin at the centre of the outer diameter. For example a n-fcone4 primitive would create a cone with an inner radius of 4LDu and an outer radius of 5LDu.

Currently available primitives :
Regular resolution :
   r=0 : 1-4con0, 2-4con0, 4-4con0
   r=1 : 1-16con1, 1-8con1, 3-16con1, 1-4con1, 2-4con1, 4-4con1
   r=2 : 1-8con2, 3-16con2, 1-4con2, 2-4con2, 4-4con2
   r=3 : 1-8con3, 1-4con3, 2-4con3, 7-8con3, 4-4con3
   r=4 : 1-4con4, 3-8con4, 2-4con4, 4-4con4
   r=5 : 1-4con5, 4-4con5
   r=6 : 1-4con6, 3-8con6, 4-4con6
   r=7 : 1-4con7, 3-8con7, 2-4con7, 4-4con7
   r=8 : 1-4con8, 2-4con8, 4-4con8
   r=9 : 3-16con9, 1-4con9, 3-8con9, 4-4con9
   r=10 : 1-8con10, 1-4con10, 2-4con10, 4-4con10
   r=11 : 1-4con11, 2-4con11, 4-4con11
   r=12 : 1-4con12, 3-8con12, 2-4con12, 4-4con12
   r=13 : 1-4con13, 2-4con13, 4-4con13
   r=14 : 1-4con14, 4-4con14
   r=15 : 1-4con15, 2-4con15, 4-4con15
   r=16 : 4-4con16
   r=17 : 4-4con17
   r=18 : 1-4con18, 4-4con18
   r=19 : 1-8con19, 1-4con19, 2-4con19, 4-4con19
   r=20 : 1-8con20, 3-8con20, 4-4con20
   r=21 : 4-4con21
   r=22 : 4-4con22
   r=23 : 1-4con23
   r=24 : 1-4con24, 4-4con24
   r=25 : 4-4con25
   r=27 : 1-4con27
   r=28 : 1-8con28, 1-4con28, 4-4con28
   r=29 : 4-4con29
   r=30 : 4-4con30
   r=31 : 1-4con31
   r=32 : 4-4con32
   r=33 : 4-4con33
   r=34 : 3-8con34
   r=35 : 4-4con35
   r=36 : 4-4con36
   r=41 : 4-4con41
   r=42 : 4-4con42
   r=43 : 4-4con43
   r=46 : 4-4con46
   r=47 : 4-4con47
   r=48 : 4-4con48
   r=61 : 4-4con61
   r=80 : 4-4con80
   r=81 : 4-4con81
High resolution :
   r=0 : 4-4con0
   r=1 : 1-4con1, 4-4con1
   r=2 : 1-4con2, 5-12con2, 4-4con2
   r=3 : 1-4con3, 5-24con3, 4-4con3
   r=4 : 1-12con4, 1-6con4, 1-4con4, 4-4con4
   r=5 : 1-12con5, 1-8con5, 1-6con5, 1-4con5, 4-4con5
   r=6 : 5-48con6, 1-8con6, 1-4con6
   r=7 : 1-24con7, 1-12con7, 1-6con7, 4-4con7
   r=8 : 1-6con8, 1-4con8, 4-4con8
   r=9 : 1-16col9, 5-48con9, 1-8con9, 5-24con9, 1-4con9, 4-4con9
   r=10 : 1-24con10, 5-24con10, 4-4con10
   r=11 : 1-16con11, 1-8con11, 1-4con11, 4-4con11
   r=12 : 1-24con12, 5-48con12, 1-8con12, 5-24con12, 1-4con12, 4-4con12
   r=13 : 1-6con13, 1-4con13, 4-4con13
   r=14 : 1-24con14, 5-24con14, 1-4con14, 3-8con14
   r=15 : 1-8con15, 1-4con15, 4-4con15
   r=16 : 1-24con16, 1-6con16, 5-24con16, 1-4con16, 3-8con16, 4-4con16
   r=17 : 1-6con17, 4-4con17
   r=18 : 4-4con18
   r=19 : 1-16con19, 3-16con19, 1-4con19, 4-4con19
   r=20 : 1-16con20, 4-4con20
   r=21 : 1-4con21, 4-4con21
   r=22 : 4-4con22
   r=23 : 1-4con23, 4-4con23
   r=24 : 1-24con24, 1-16con24, 1-12con24, 1-4con24, 4-4con24
   r=25 : 1-4con25, 4-4con25
   r=27 : 4-4con27
   r=28 : 1-4con28
   r=29 : 5-48con29
   r=32 : 1-4con32
   r=31 : 1-6con31, 4-4con31
   r=32 : 1-4con32
   r=35 : 4-4con35
   r=36 : 1-4con36, 4-4con36
   r=38 : 1-4con38
   r=39 : 1-4con39, 4-4con39
   r=40 : 1-4con40
   r=41 : 1-4con41, 4-4con41
   r=45 : 1-6con45
   r=46 : 1-6con46
   r=52 : 1-4con52
   r=54 : 4-4con54
   r=64 : 4-4con64
   r=70 : 4-4con70

tffirrrr.dat
tfforrrr.dat
tffqrrrr.dat

rfforrrr.dat
rfforrrrr.dat

inner

outer

tube

This suite of primitives are used to generate circular torus sections. By default all these primitives produce a torus with a major radius of 1LDu, so typically need to be scaled up in the {x} and {z} dimensions. The first character denotes whether the minor radius is smaller than (tff primitives) or larger than the major radius (rff primitives). The latter are termed reverse ratio tori. The second and third characters of the filename ff denotes the sweep of torus, as an inverse fraction (01=1/1, 02=1/2, 04=1/4, 08=1/8, 16=1/16, 32=1/32, 48=1/48). The fourth character denotes the section of a torus (i=inner, o=outer, q=tube - the combination of 2 inner and 2 outer sections). Inner sections are not possible for reverse ratio tori.

For regular tori, the last four characters of the file name rrrr denote the torus minor radius in LDu (1333=0.1333, 3333=0.3333), with the special designation 'unit' unsed to indicate a radius of 1.0000.
For reverse ratio tori named like rfforrrr.dat, the last four characters of the file name rrrr represent torus minor radius with an implied decimal point after the first digit (1500=1.5, 4600=4.6). For reverse ratio tori named like rfforrrrr.dat, the last five characters of the file name rrrrr represent torus minor radius with an implied decimal point after the first two digits (11000=11.0).

These diagrams (based on an idea of Paul Easter's) illustrate the relationship of the torus primitives to the major and minor radii.

regular inner torus

regular outer torus

reverse ratio outer torus

1-4ccyli.dat

This single primitive pre-dates the creation of the tffirrrr and tfforrrr suite of primitives and will not be augmented. It produces a quarter torus with a major radius of 2.5Ldu and a tube radius of 1LDu.

It is superceded by t04q4000.dat.

n-fsphe.dat

Currently available primitives :
Regular resolution : 1-8, 2-8, 4-8, 8-8
High resolution : 2-8, 4-8, 8-8

1-8sphc.dat

This primitive represents one octant (eighth) of a sphere, centered at the origin {0,0,0} of radius 1.414, truncated by the sides of a cube with a vertex at {1,1,1}. The boundaries of the resulting surface are circular and fit with 1-4edge.dat.

Technic axle primitives

axle.dat

Technic axle section

axleend.dat

axlehole.dat

axlehol4.dat

axlehol5.dat

axlehol6.dat

axleho10.dat

axlehol7.dat

axlehol8.dat

axlehol2.dat

axlehol3.dat

axlehol9.dat

axl2hole.dat

axl2ho10.dat

axl2hol8.dat

axl2hol2.dat

axl2hol3.dat

axl2hol9.dat

axl3hole.dat

axl3hol6.dat

axl3ho10.dat

axl3hol8.dat

axl3hol2.dat

axl3hol3.dat

axl3hol9.dat

axlesphe.dat

Technic castellated bush primitives

bushlock.dat

Technic 16-tooth castellation - long teeth

bushloc2.dat

bushloc3.dat

bushloc4.dat

steerend.dat

Technic bush primtives

bush.dat

Technic bush with collar at one end

bush0.dat

Technic bush without end collars

bush1.dat

Technic bush collar quarter

Technic connector primitives

connect.dat

connect8.dat

connect2.dat

connect3.dat

connect4.dat

connect5.dat

connect6.dat

connect7.dat

confric.dat

confric2.dat

confric3.dat

confric5.dat

confric4.dat

confric6.dat

confric8.dat

confric9.dat

Technic connector hole primitives

connhole.dat

connhol2.dat

connhol3.dat

beamhole.dat

beamhol2.dat

peghole.dat

peghole2.dat

peghole5.dat

peghole4.dat

peghole3.dat

npeghole.dat

npeghol7.dat

npeghol2.dat

npeghol3.dat

npeghol4.dat

npeghol5.dat

npeghol6.dat

Technic gear tooth primitives

tooth8.dat

tooth16.dat

tooth24.dat

tooth24a.dat

tooth24b.dat

tooth24c.dat

tooth40.dat

toothb12.dat

toothb14.dat

toothb20.dat

tootb28.dat

tootb28s.dat

toothd28.dat

toothr.dat

toothl.dat

Technic Duplo primitives

daxle.dat

Duplo technic axle section

daxlehole.dat

daxlehub.dat

dconnhole.dat

dnpeghole.dat

dtooth8.dat

dtoothc.dat

Stud primitives

stud.dat


studa.dat


studp01.dat

studel.dat

stud10.dat

stud15.dat

stud13.dat

stud2.dat

stud2a.dat

stud2s.dat

stud17a.dat

stud9.dat

stud6.dat

stud6a.dat

stud3.dat

1 16  x y z  1 0 0   0 -1 0   0 0 1  stud3.dat

stud3a.dat

studx.dat

stud12.dat

stud4.dat

stud4a.dat

stud4s.dat

stud4s2.dat

stud4o.dat

stud4od.dat

stud4h.dat

stud4fns.dat

stud16.dat

stud21a.dat

stud22a.dat

stud18a.dat

stud23.dat

stud5.dat

stud7.dat

stud7a.dat

stud8.dat

stud11.dat

stud14.dat

stud25.dat

primotop.dat


primobot.dat


zstud.dat


Stud group primitives

stugmxn.dat

Currently available primitives :

Text primitves

typestci.dat

Currently available primitives :

Primitives for ZNAP parts

znap1.dat

znap2.dat

znap3a.dat

znap3b.dat

znap4.dat

znap5.dat

znap6.dat

Arm, Clip and Pin primitives

arm1.dat

This primitive produces two-fingered hinge component of the cylindrical arm with a radius of 10LDu.

arm2.dat

This primitive produces three-fingered hinge component of the cylindrical arm with a radius of 10LDu.

arm3.dat

This primitive produces three-fingered hinge component of the cylindrical arm with a radius of 10LDu.

clh1.dat

clh3.dat

clh6.dat

clh8.dat

clh2.dat

clh9.dat

clh4.dat

clh5.dat

clh10.dat

clh11.dat

4-4crh1.dat

4-4crh2.dat

clip1.dat

This primitive produces a vertical clip designed to hold an 8LDu diameter pole or rod at be used for flag parts.

clip2.dat

This primitive produces a vertical clip designed to hold an 8LDu diameter pole or rod at be used for brick parts.

clip5.dat

clip9.dat

clip10.dat

clip4.dat

This primitive produces a three-fingered vertical clip designed to hold an 8LDu diameter pole or rod.

clip7.dat

clip12.dat

This primitive produces a thick 'C' clip for use with organic shape parts with a clip (claws, arms, weapons...).

clip13.dat

This primitive produces a thick 'C' clip, with minimal surfaces.

clip3.dat

This primitive produces a horizontal clip designed to hold an 8LDu diameter pole or rod.

clip6.dat

clip8.dat

clip11.dat

finger1.dat

This primitive produces a single finger for the base of classic windows.

h1.dat

h2.dat

plug34.dat

wpin.dat

wpin2.dat

wpin2a.dat

wpin3.dat

wpin4.dat

wpinhol2.dat

bump5000.dat

slotm.dat

handle.dat

handle2.dat

rail12v.dat