General Program Information
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h1. General Program Information {float:left|border=2px solid black} [!7.JPG|width=280px!|AutoCAD Pipe Program] Southwest Isometric View {float} \\ \\ h3. Input Definitions h5. h5. Inputs Needed to Call the Tee Function Origin - a 3*1 matrix with |
Input Definitions
Inputs Needed to Call the Tee 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
...
point
...
where
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the
...
pipe
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will
...
be
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drawn,
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it correponds to the lower center of the pipe
ND - The nominal diameter of the tee. This value along with the pipe schedule is used to determine other actual dimensions of the tee.
EN- The enumerated pipe schedule type. Each schedule of pipe is represented by a specific number within our code.
Pipelength - the length of the pipe
Inputs Defined within Pipe Database
Pipeinr - The outer radius of the main pipe, defined by outerradius(ND)
Pipeour - The inner radius of the main pipe, defined by innerD(ND,ED)/2
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Inputs
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Defined
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within
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the
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Pipe
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Function
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p2
...
=
...
- x
...
- :
...
- origin
...
- 0 + pipeoutr
- y : origin1
- z : origin2
p3 =
- x : origin0 + pipeinr
- y : origin1
- z : origin2
win1 =
- x : origin0 - pipeoutr - zc
- y : origin1 - pipeoutr - zc
- z : origin2
win2 =
- x : origin0 + pipeoutr + zc
- y : origin1 + pipeoutr + zc
- z : origin2
Pipeouinr is the outer radius of the pipe, found from the pipe database using the outer diameter function
Pipeoutr is the outer radius of the pipe, found from the pipe database using the outerradius function
Note: zc corresponds to the zoom constant used within AutoCAD and created in the basics file that is referenced by the pipe program.
Technical Program Outline
Note: All coordinates are referenced in top view in the program unless otherwise specified
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pipe{~}outr~
* y : origin{~}1~
* z : origin{~}2~
p3 =
* x : origin{~}0~ + pipe{~}inr~
* y : origin{~}1~
* z : origin{~}2~
win1 =
* x : origin{~}0~ \- pipe{~}outr~ \- zc
* y : origin{~}1~ \- pipe{~}outr~ \- zc
* z : origin{~}2~
win2 =
* x : origin{~}0~ + pipe{~}outr~ + zc
* y : origin{~}1~ + pipe{~}outr~ + zc
* z : origin{~}2~
Pipe{~}ouinr~ is the outer radius of the pipe, found from the pipe database using the outer diameter function
Pipe{~}outr~ is the outer radius of the pipe, found from the pipe database using the outerradius function
*Note:* zc corresponds to the zoom constant used within AutoCAD and created in the basics file that is referenced by the pipe program.
h1. Technical Program Outline
*Note:* All coordinates are referenced in top view in the program unless otherwise specified
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[!1.JPG|width=550px!|AutoCAD Pipe Program]
Top View
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zoomwin- zooms on a window space directly around where the pipe is to be draw (as shown above - actual window size relative to pipe that is to be drawn). The points win1 and win2 are used to select this window size, based on including the space of the pipe (the outer radius) and a zoom constant (zc) to ensure the entire drawing will be within the frame.
zoomwin <-- zoomwina(win1,win2)
win1 =
- x : origin0 - pipeoutr - zc
- y : origin1 - pipeoutr - zc
- z : origin2
win2 =
- x : origin0 + pipeoutr + zc
- y : origin1 + pipeoutr + zc
- z : origin2
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{ *zoom{*}{*}{~}win{~}*\- zooms on a window space directly around where the pipe is to be draw (as shown above - actual window size relative to pipe that is to be drawn). The points win1 and win2 are used to select this window size, based on including the space of the pipe (the outer radius) and a zoom constant (zc) to ensure the entire drawing will be within the frame. zoom{~}win~ <-\- zoom{~}win~(win1,win2) win1 = * x : origin{~}0~ \- outerradius(2*pipe{~}inr~) - zc * y : origin{~}1~ \- outerradius(2*pipe{~}inr~) - zc * z : origin{~}2~ win2 = * x : origin{~}0~ + outerradius(2*pipe{~}inr~) + zc * y : origin{~}1~ + outerradius(2*pipe{~}inr~) + zc * z : origin{~}2~ \\ \\ \\ {float:left|border=2px solid black} [!2.JPG|width=250px!|AutoCAD Pipe Program] Top View [!3.JPG|width=180px!|AutoCAD Pipe Program] Southwest Isometric View {float} * |
cylinder1
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-
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Draws
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the
...
larger
...
of
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the
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two
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cylinders
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needed
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to
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create
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a
...
pipe.
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The
...
cylinder
...
has
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pipe
...
outr as
...
the
...
radius.
...
From
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topview,
...
the
...
cylinder
...
draws
...
up
...
towards
...
the
...
viewer
...
with
...
the
...
pipe
...
origin
...
at
...
the
...
bottom
...
base.
...
cylinder1
...
<-
...
-
...
cylinderA(origin,pipe
...
outr,pipelength)
origin =
- x : origin0
- y : origin1
- z : origin2
pipeoutr = pipeoutr
pipelength = pipelength
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{{~}length~) origin = * x : origin{~}0~ * y : origin{~}1~ * z : origin{~}2~ pipe{~}outr~ = outerradius(2*pipe{~}inr~) pipe{~}length~ = pipe{~}length~ \\ \\ \\ {float:left|border=2px solid black} [!4.JPG|width=250px!|AutoCAD Pipe Program] Top View [!5.JPG|width=180px!|AutoCAD Pipe Program] Southwest Isometric View {float} * |
cylinder2
...
-
...
Draws
...
the
...
smaller
...
of
...
the
...
two
...
cylinders
...
needed
...
to
...
create
...
the
...
pipe.
...
The
...
cylinder
...
has
...
pipe
...
inr as
...
the
...
radius.
...
From
...
topview,
...
the
...
cylinder
...
draws
...
up
...
towards
...
the
...
viewer
...
with
...
the
...
pipe
...
origin
...
at
...
the
...
bottom
...
base.
...
This
...
inner
...
cylinder
...
will
...
then
...
be
...
subtracted
...
to
...
create
...
the
...
hollow
...
pipe,
...
with
...
the
...
inner
...
radius
...
as
...
specified.
...
cylinder2
...
<-
...
-
...
cylinderA(origin,pipe
...
inr,pipelength)
origin =
- x : origin0
- y : origin1
- z : origin2
pipeinr : pipeinr
pipelength : pipelength
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{{~}length~) origin = * x : origin{~}0~ * y : origin{~}1~ * z : origin{~}2~ pipe{~}inr~ : pipe{~}inr~ pipe{~}length~ : pipe{~}length~ \\ \\ \\ {float:left|border=2px solid black} [!6.JPG|width=380px!|AutoCAD Pipe Program] Top View {float} * |
subtract1
...
-
...
In
...
order
...
to
...
create
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the
...
hollow
...
pipe,
...
the
...
inner
...
cylinder
...
must
...
be
...
subtracted
...
from
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the
...
outer
...
cylinder.
...
The
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subtract
...
function
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selects
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p2,
...
on
...
the
...
edge
...
of
...
the
...
inner
...
cylinder,
...
to
...
select
...
the
...
inner
...
cylinder
...
as
...
the
...
piece
...
to
...
be
...
subtracted.
...
The
...
subtract
...
function
...
then
...
selects
...
p3,
...
on
...
the
...
edge
...
of
...
the
...
outer
...
cylinder,
...
to
...
select
...
the
...
outer
...
cylinder
...
to
...
subtract
...
from.
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subtract
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<-
...
-
...
subtractD(p2,p3)
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p2
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=
...
- x
...
- :
...
- origin
...
- 0 + pipeinr
- y : origin1
- z : origin2
p3 =
- x : origin0 + pipeoutr
- y : origin1
- z : origin2
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pipe{~}inr~ * y : origin{~}1~ * z : origin{~}2~ p3 = * x : origin{~}0~ + outerradius(2*pipe{~}inr~) * y : origin{~}1~ * z : origin{~}2~ \\ \\ \\ {float:left|border=2px solid black} [!7.JPG|width=280px!|AutoCAD Pipe Program] Top View {float} \\ |