General Program Information
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h3. General Program Information {float:left|border=2px solid black} [!1b.bmp|width=280px330px!|AutoCAD Cross Program] [!1.bmp|width=280px330px!|AutoCAD Cross Program] Southeast Isometric View {float} \\ \\ h3. Input Definitions h5. Inputs Needed to Call the Cross Function origin - a 3*1 matrix with |
Input Definitions
Inputs Needed to Call the Cross Function
origin - a 3*1 matrix with x,y,z
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positions
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corresponding
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to
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the
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point
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where
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the
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tee
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will
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be
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drawn.
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ND
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-
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The
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nominal
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diameter
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of
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the
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pipe.
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This
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value
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along
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with
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the
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pipe
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schedule
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is
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used
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to
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determine
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other
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actual
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dimensions
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of
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the
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elbow
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EN
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-
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The
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enumerated
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pipe
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schedule
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type.
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Each
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schedule
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of
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pipe
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is
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represented
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by
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a
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specific
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number
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within
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our
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code.
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Inputs
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Defined
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within
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the
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Cross
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Database
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R1 - The inner radius of the main pipe, defined by outerradius(ND)
R2 - The outer radius of the main pipe, defined by innerD(ND,ED)/2
R3 - The outer radius of the sockets of the tee, defined by ConRadius(ND)
L - The length of the main pipe of the tee, defined by ShortTeeLength(ND)*2
...
H - The depth of the sockets of the tee, defined by SocketDepth(ND)
Inputs Defined within the Cross Function
p1 =
- x : origin0
- y : origin1
- z : origin2
p17 =
- x : origin0
- y : origin2 + R2
- z : origin1
p18 =
- x : origin0
- y : origin2
p19 =
- x : origin0
- y : origin2 + zc
p20 =
- x : origin0 - L/2
- y : origin1
- z : origin2 + L/2
p21 =
- x : origin0 + L/2
- y : origin1
- z : origin2 + L/2
p22 =
- x : origin0 - L/4
- y : origin1 - R1
- z : origin2
p23 =
- x : origin0 + L/4
- y : origin1 - R1
- z : origin2
p24 =
- x : origin0
- y : origin1
- z : origin2 + L/2 - R3
ND = The nominal diameter of the pipe.
R1 = the inner radius of the main pipe.
R2 = the outer radius of the main pipe.
R3 = the outer radius of the four sockets of the tee.
L = the length of the main pipes of the tee.
H = the length of the four sockets of the tee.
win1 =
- x : origin0 - (L/2 + H)
- y : origin1 - R3
- z : origin2
win2 =
- x : origin0 + (L/2 + H)
- y : origin1 + R3
- z : origin2
EN = The pipe schedule
Technical Program Outline
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[!1a.bmp|width=240px!|AutoCAD Cross Program]
{float} |
The Cross program is built on the Tee Program.
Tee1 - builds a tee with origin p1, nominal diameter ND, and pipe schedule EN.
Tee1 <--Tee(p1,ND,EN)
p1 = origin
ND = The nominal diameter of the pipe.
EN = The pipe schedule
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\- EN-The enumerated pipe schedule type. Each schedule of pipe is represented by a specific number within our code. h5. Inputs Defined within the Cross Function p1 = * x : origin{~}0~ * y : origin{~}1~ * z : origin{~}2~ p2 = * x : origin{~}0~ * y : origin{~}1~ * z : origin{~}2~ + L/2 p3 = * x : origin{~}0~ + innerD(ND,EN)/2 * y : origin{~}1~ * z : origin{~}2~ + L/2 p4 = * x : origin{~}0~ \- R1 * y : origin{~}1~ * z : origin{~}2~ p5 = * x : origin{~}0~ + L/2 * y : origin{~}1~ + R1 * z : origin{~}2~ + L/2 p7 = * x : origin{~}0~ \- R3 * y : origin{~}1~ * z : origin{~}2~ p8 = * x : origin{~}0~ \- R1 * y : origin{~}1~ * z : origin{~}2~ \ p9 = * x : origin{~}0~ * y : origin{~}1~ \- H * z : \-origin{~}1~ \- R3 p10 = * x : origin{~}0~ * y : origin{~}2~ + L/2 p11 = * x : origin{~}0~ + zc * y : origin{~}2~ + L/2 - zc p12 = * x : origin{~}0~ + zc * y : origin{~}2~ + L/2 p13 = * x : origin{~}0~ * y : origin{~}2~ + L + H * z : \-origin{~}1~ p14 = * x : origin{~}0~ + L/2 + H * y : origin{~}2~ + L/2 * z : \-origin{~}1~ p15 = * x : origin{~}0~ * y : origin{~}2~ \- H * z : \-origin{~}1~ p16 = * x : origin{~}0~ * y : origin{~}2~ + R2 * z : \-origin{~}1~ p17 = * x : origin{~}0~ * y : origin{~}2~ + R2 * z : origin{~}1~ p18 = * x : origin{~}0~ * y : origin{~}2~ p19 = * x : origin{~}0~ * y : origin{~}2~ + zc p20 = * x : origin{~}0~ \- L/2 * y : origin{~}1~ * z : origin{~}2~ + L/2 p21 = * x : origin{~}0~ + L/2 * y : origin{~}1~ * z : origin{~}2~ + L/2 p22 = * x : origin{~}0~ \- L/4 * y : origin{~}1~ \- R1 * z : origin{~}2~ p23 = * x : origin{~}0~ + L/4 * y : origin{~}1~ \- R1 * z : origin{~}2~ p24 = * x : origin{~}0~ * y : origin{~}1~ * z : origin{~}2~ + L/2 - R3 ND = The nominal diameter of the pipe. This value along with the pipe schedule is used to determine other actual dimensions of the elbow R1 = the inner radius of the main pipe. R2 = the outer radius of the main pipe. R3 = the outer radius of the four sockets of the tee. L = the length of the main pipes of the tee. H = the length of the four sockets of the tee. win1 = * x : origin{~}0~ \- (L/2 + H) * y : origin{~}1~ \- R3 * z : origin{~}2~ win2 = * x : origin{~}0~ + (L/2 + H) * y : origin{~}1~ + R3 * z : origin{~}2~ EN = The enumerated pipe schedule type. Each schedule of pipe is represented by a specific number within our code. h3. Technical Program Outline The Cross program is built on the [Tee Program|AutoCAD Tee Program]. Resuming after bigunion1: {float:left|border=2px solid black} [!2.bmp|width=280px240px!|AutoCAD Cross Program] Before mirror3 [!2c.bmp|width=280px360px!|AutoCAD Cross Program] After mirror3 {float} * |
mirror3
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-
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mirrors
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the
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tee
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around
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the
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centerline
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of
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the
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main
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pipe,
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using
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p17
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to
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select
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the
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tee,
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then
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reflecting
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it
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over
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a
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mirror
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line
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created
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using
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p18
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and
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p19
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to
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give
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the
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slope
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and
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direction
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of
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the
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mirror
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line.
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mirror3
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<-
...
-
...
mirrorA(p17,p18,p19)
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p17
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=
...
- x
...
- : origin0
- y : origin2 + R2
- z : origin1
p18 =
- x : origin0
- y : origin2
p19 =
- x : origin0
- y : origin2 + zc
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origin{~}0~ * y : origin{~}2~ + R2 * z : origin{~}1~ p18 = * x : origin{~}0~ * y : origin{~}2~ p19 = * x : origin{~}0~ * y : origin{~}2~ + zc \\ \\ {float:left|border=2px solid black} [!3.bmp|width=280px560px!|AutoCAD Cross Program] {float} * |
cylinder7
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-
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creates
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a
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cylinder
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of
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radius
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R2
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within
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the
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cross.
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cylinder7
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<-
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-
...
cylinderB(p20,R2,p21)
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p20
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=
...
- x
...
- :
...
- origin0 - L/2
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- y
...
- :
...
- origin1
- z : origin2 + L/2
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R2
...
-
...
the
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outer
...
radius
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of
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the
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main
...
pipe.
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p21
...
=
...
- x
...
- :
...
- origin
...
- 0 +
...
- L/2
...
- y
...
- : origin1
- z : origin2 + L/2
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origin{~}1~ * z : origin{~}2~ + L/2 \\ \\ {float:left|border=2px solid black} [!4a.bmp|width=280px480px!|AutoCAD Cross Program] [!4b.bmp|width=280px!|AutoCAD Cross Program] Free Rotation used to show the cross is now hollow {float} * |
subtract4
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-
...
subtracts
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the
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cylinder
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from
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the
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cross
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creating
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a
...
hollow
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pipe,
...
by
...
selecting
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the
...
2
...
separate
...
halves
...
of
...
the
...
cross
...
as
...
the
...
objects
...
to
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be
...
subtracted
...
from
...
by
...
using
...
p22
...
and
...
p23,
...
and
...
selecting
...
cylinder7
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as
...
the
...
object
...
to
...
be
...
subtracted
...
by
...
using
...
p24. During the process of subtraction, the two separate pieces are unioned to act as one unit.
subtract4 <-- subtractB(p22,p23,p24)
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p22
...
=
...
- x
...
- :
...
- origin0 - L/4
...
- y
...
- : origin1 - R1
- z : origin2
p23 =
- x : origin0 + L/4
- y : origin1 - R1
- z : origin2
p24 =
- x : origin0
- y : origin1
- z : origin2 + L/2 - R3
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origin{~}1~ \- R1 * z : origin{~}2~ p23 = * x : origin{~}0~ + L/4 * y : origin{~}1~ \- R1 * z : origin{~}2~ p24 = * x : origin{~}0~ * y : origin{~}1~ * z : origin{~}2~ + L/2 - R3 \\ \\ {float:left|border=2px solid black} [!1.bmp|width=280px330px!|AutoCAD Cross Program] {float} |
viewfront2
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-
...
sets
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the
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workspace
...
so
...
that
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the
...
user
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is
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viewing
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the
...
object
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from
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the
...
front.
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viewfront2
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<-
...