h3. General Program Information
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h3. Input Definitions
h5. Inputs Needed to Call the Tee Function
origin - A 3*1 matrix with x,y,z positions corresponding to the point where the tee will be drawn.
ND - The nominal diameter of the pipe. This value along with the pipe schedule is used to determine other actual dimensions of the tee.
R1 - The inner radius of the main pipe.
R2 - The outer radius of the main pipe.
R3 - The outer radius of the sockets of the tee.
L - The length of the skinnier pipes of the tee.
H - The length (or depth) of the sockets of the tee.
EN\- The enumerated pipe schedule type. Each schedule of pipe is represented by a specific number within our code.
h5. Inputs Defined within Pipe Database
origin-A 3*1 matrix with x,y,z positions corresponding to the point where the tee will be drawn.
ND-The nominal diameter of the pipe. This value along with the pipe schedule is used to determine other actual dimensions of the tee.
outerradius(ND)\-
innerD(ND,EN)/2\-
ConRadius(ND)\-
ShortTeeLength(ND)*2\-
SocketDepth(ND)\-
EN-The enumerated pipe schedule type. Each schedule of pipe is represented by a specific number within our code.
h5. Inputs Defined within the Tee 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
ND - The nominal diameter of the pipe. This value along with the pipe schedule is used to determine other actual dimensions of the tee.
R1
R2
R3
L
H
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.
*Note:* zc corresponds to the zoom constant used within AutoCAD, defined by the basics file.
h3. Technical Program Outline
*Note:* All coordinates are referenced in top view in the program unless otherwise specified
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*zoom{*}{*}{~}win{~}*\- zooms on a window space directly around where the tee is to be drawn. The points win1 and win2 are used to select this window size, based on including the space of the tee and a zoom constant (zc) to ensure the entire drawing will be within the frame.
zoom{~}win~ <-\- zoom{~}wina~(win1,win2)
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~
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*[*pipe1*|AutoCAD Pipe Program]*\- Draws a pipe of length L, with origin at p1.
pipe1 <-\- Pipe(p1,ND,L,EN)
p1 = origin
ND =
L =
EN =
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*[*pipe2*|AutoCAD Pipe Program]* \- Draws a pipe of half the length of pipe1, with it's origin starting at L/2, the middle of pipe1. All other dimensions are the same as pipe1.
pipe2 <-\- Pipe(p2,ND,L/2,EN)
p2 =
* x : origin{~}0~
* y : origin{~}1~
* z : origin{~}2~ + L/2
ND =
L/2 =
EN =
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*rotate1*\- rotates pipe2 90 degrees using p2 to select pipe2, then using p3 to specify where on the y-axis to rotate.
rotate1 <-\- rotate(~)3d~(p3,p2,"y",90)
p3 =
* x : origin{~}0~ + innerD(ND, EN)/2
* y : origin{~}1~
* z : origin{~}2~ + L/2
p2 =
* x : origin{~}0~
* y : origin{~}1~
* z : origin{~}2~ + L/2
"y" - specifies which dimension to rotate in
90 - specifies how many degrees to rotate
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cylinder1 - creates a cylinder with length 'L' that comes out of the page.
cylinder2 - creates a cylinder with length 'L/2'.
union1 - unions the two cylinders.
cylinder3 - creates a cylinder with length 'L'.
cylinder4 - creates a cylinder with length 'L/2'.
[!tee subtract1 subtract2.JPG|width=32,height=32!|AutoCAD Pipe Program]
subtract1 - subtracts the portion of cylinder2 and cylinder4 that are inside the cylinders creating a hollow pipe out of cylinder2 and cylinder4.
subtract2 - subtracts cylinder 3 from cylinder 1 creating a hollow pipe coming out of the page.
[!tee H pipe.JPG|width=32,height=32!|AutoCAD Pipe Program]
*tee viewed from viewfront*
cylinder5 - creates a cylinder with a depth 'H' and radius 'R3' into the page.
cylinder6 - creates a cylinder with a depth 'H' and radius 'R1' into the page.
subtract3 - subtracts cylinder 6 from cylinder 5 creating a hollow pipe with length 'H'.
viewfront - sets the workspace so that the user is viewing the object from the front.
[!tee mirror dimensions.JPG|width=32,height=32!|AutoCAD Pipe Program]
zoom ~win1~ \- zooms the workspace to a focus area
mirror1 - mirrors the bottom pipe 90 degrees clockwise.
mirror2 - mirrors the bottom pipe 180 degrees.
bigunion1 - joins all four pipes. |