22-7. 3D Polar Spheroidal Relative Coordinates

Three-dimensional infinite too 3D Polar Spheroidal Relative Coordinates inwards AutoCAD

 

Spheroidal Polar Coordinates Relative to the 3D drawing based on the betoken at which nosotros are currently defining a distance nether angle1 inwards XY bird from the initial direction of a angle2 is perpendicular to the bird XY.
Command is entered on the form @distance<angle1<angle2 behind the ascendency work you lot desire to draw.

Given that hither nosotros create non lead maintain X too Y coordinates, nosotros lead maintain a measure starting direction EAST hence nosotros lead maintain assist of it when working alongside these coordinates. (See Coordinate System). The ascendency is like to the spheroid-Absolute coordinates alongside the deviation that when you lot type the ascendency coordinates seat the @ sign too the starting betoken is our electrical flow betoken where nosotros are.

Look at the moving painting above. To describe a starting betoken of a work inwards 3D space using spherical polar coordinates relative it is necessary to specify the ascendency equally follows.

1. - Click on the Isometric push clitoris to switch to 3D stance (toolbar View)
2. - To gear upwards betoken T2 is necessary: to seat itself at the betoken T1 too hence click on the push clitoris LINE
3. - Type @6<40<23 + Enter fourth dimension betoken T2 positioned inwards 3D infinite past times elements of orders that nosotros lead maintain set. So vi is our distance from the starting betoken T1, angle1 nether which nosotros started - East direction is 40° too angle2 is vertical too is 23°.

What did nosotros do?
We were at the betoken T1. Using spherical polar coordinates are defined relative to our distance from the T2 to locomote vi units at an angle 40° from the X Axis towards the East a diagonal perpendicular to the superlative angle2 23°.

So the sequence of commands equally follows:
We are located at the betoken T1

Command: _line [LINE push clitoris click to describe lines, banknote that the starting betoken from T1]
Specify commencement point: @6<40<23 [set betoken T2 - the distance betwixt T1 too T2 = 6, angle1 = 40°, angle2 = 23°]

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