General Program Information

Input Definitions

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.
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.

Inputs Defined within the Tee Function

p1 =

• x : origin₀
• y : origin₁
• z : origin₂

p2 =

• x : origin₀
• y : origin₁
• z : origin₂ + L/2

p3 =

• x : origin₀ + L/2
• y : origin₁
• z : origin₂ + L/2

p4 =

• x : origin₀ - R1
• y : origin₁
• z : origin₂

p5 =

• x : origin₀ + L/2
• y : origin₁ + R1
• z : origin₂ + L/2

p6 =

• x : origin₀ - R2
• y : origin₁
• z : origin₂

p7 =

• x : origin₀ - R3
• y : origin₁
• z : origin₂

p8 =

• x : origin₀ - R1
• y : origin₁
• z : origin₂ - H

p9 =

• x : origin₀
• y : origin₁ - H
• z : -origin₁ - R3

p10 =

• x : origin₀
• y : origin₂ + L/2

p11 =

• x : origin₀ + zc
• y : origin₂ + L/2 - zc

*zc is a zooming constant used to add a short length to some dimensions in order to be sure an entire object is selected

p12 =

• x : origin₀ + zc
• y : origin₂ + L/2

p13 =

• x : origin₀
• y : origin₂ + L + H
• z : -origin₁

p14 =

• x : origin₀
• y : origin₂
• z : -origin₁

p15 =

• x : origin₀
• y : origin₂ - H
• z : -origin₁

p16 =

• x : origin₀
• y : origin₂ + R2
• z : -origin₁

win1 =

• x : origin₀ - (L/2 + H)
• y : origin₁ - R3
• z : origin₂

win2 =

• x : origin₀ + (L/2 + H)
• y : origin₁ + R3
• z : origin₂

win3 =

• x : origin₀ - R3 - zc
• y : origin₂ - H - zc
• z : -origin₁

win4 =

• x : origin₀ + L/2 + H + zc
• y : origin₂ + H + L + zc
• z : -origin₁

Technical Program Outline

viewtop - sets the workspace so that the user is viewing the object from the top.

zoom _win - zooms the workspace to a smaller focus area

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'.

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 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.

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.