General Program Information

Input Definitions

Inputs needed to call the tank function

tank_origin - a 3 by 1 matrix with x,y,z positions corresponding to the point where the tank will be drawn

tank_dim - a 3 by 1 matrix with x,y,z positions corresponding to the length, width and height dimensions of the tank

• x: tank.dim₀ = length
• y: tank.dim₁ = width
• z: tank.dim₂ = height

thick - the thickness of the wall of the tank

Inputs defined with the tank function

p1=

• x : tank.origin₀ - tank.dim₀
• y : tank.origin₁ + tank.dim₁
• z : tank.origin₂ + tank.dim₂

p2=

• x : tank.origin₀ + thick
• y : tank.origin₁ - thick
• z : tank.origin₂ - thick

p3=

• x : tank.origin₀ - tank.dim₀ - thick
• y : tank.origin₁ + tank.dim₁ + thick
• z : tank.origin₂ + tank.dim₂

win1=

• x : tank.origin₀ + thick + zc
• y : tank.origin₁ - thick - zc
• z : tank.origin₂

win2=

• x : tank.origin₀ - tank.dim₀ - zc
• y : tank.origin₁ + tank.dim₁ + zc
• z : tank.origin₂ + tank.dim₂

Note: zc corresponds to a zoom constant used within Autocad. It is defined in the basics file.

Technical Program Outline

Note: All coordinates are referenced in top view in the program unless otherwise specified

zoom_win- zooms on a window space directly around where the tank is to be drawn

zoom_win <-- zoom_wina(win1,win2)

win1=

• x : tank.origin₀ + thick + zc
• y : tank.origin₁ - thick - zc
• z : tank.origin₂

win2=

• x : tank.origin₀ - tank.dim₀ - zc
• y : tank.origin₁ + tank.dim₁ + zc
• z : tank.origin₂ + tank.dim₂
  
  
  Unknown macro: {float}

  
  Top View
  
  Southwest Isometric View

  box1 - Draws the smaller of the two boxes to create the tank

box1 <-- boxA(tank_origin,p1)

tank_origin : tank_origin

p1=

• x : tank.origin₀ - tank.dim₀
• y : tank.origin₁ + tank.dim₁
• z : tank.origin₂ + tank.dim₂

box2 - Draws the larger of the two boxes to create the tank

box2 <-- boxA(p2,p3)

p2=

• x : tank.origin₀ + thick
• y : tank.origin₁ - thick
• z : tank.origin₂ - thick

p3=

• x : tank.origin₀ - tank.dim₀ - thick
• y : tank.origin₁ + tank.dim₁ + thick
• z : tank.origin₂ + tank.dim₂

subtract - In order to make the tank hollow, the inner box must be subtracted from the outer box

subtract <-- subtractD(p2,tank_origin)

p2=

• x : tank.origin₀ + thick
• y : tank.origin₁ - thick
• z : tank.origin₂ - thick

tank_origin : tank_origin