click and draw rotating 3d file

Module 8: Rotating 3D Models

When you have completed this module, y'all will be able to:

1. Apply the TRIM and EXTEND commands when trimming and extending in three dimensional wireframe modeling.
2. Apply the ROTATE3D command to rotate 3D models.

Rotating in 3D

AutoCAD has private 2D and 3D rotate commands. The 2D rotate command is ROTATE and in 3D, it is ROTATE3D. In this module, using the ROTATE3D command will be taught. It is used to rotate the model in 3D space. The chief difference between the two commands is that the ROTATE command uses a XY bespeak to rotate around and the ROTATE3D command uses two XYZ points or an axis to rotated around. The ROTATE command can be used while 3D modeling every bit long equally all of the objects being rotated are second objects and located on the current UCS. If 3D objects are going to be rotated in 3D space, the ROTATE3D control must be used. See Figure eight-1.

Figure 8-1
Rotating 3D Model in 3D Space

The ROTATE3D command is used to rotate objects in 3D space around an axis or 2 XY points.

Shortcut: none

Work ALONG: Rotating Wireframe Models in 3D Space

Stride 1

Using the NEW command, beginning a new drawing using the template: 3D Layout English language.

Step 2

Save and name the drawing: AutoCAD 3D Workalong 08-1.

Pace 3

On layer: Model, draw a wireframe model of the object shown in the multiview cartoon. (Effigy Stride 3A and 3B)

Figure Step 3A
Dimensioned Multiview Drawing

Effigy Step 3B
SE Isometric View

Step 4

Enter the commands, as shown below, to set the TRIM and EXTEND commands while working in 3D.

Command: TRIM

Current settings: Project=None, Edge=No Extend

(Note how in this case, the Projection is set up to None and Border to No Extend. Your figurer might exist different.)

Select cut edges … (Select an object, any object)

Select objects or <select all>: (Press Enter)

Select object to trim or shift-select to extend or [Fence/Crossing/Projection/Edge/eRase/Undo]: P

Enter a projection option [None/Ucs/View] <None>: U

(Enter U for Ucs.)

[Fence/Crossing/Project/Edge/eRase/Disengage]: E

Enter an implied edge extension mode [Extend/No extend] <No Extend>: East

(Enter E for Edge and then another for Extend. That means that the intersection of the ii objects that you are trimming or extending do not have to physically intersect. AutoCAD will extend them to find the credible intersection for y'all.)

Control: EXTEND

Electric current settings: Project=Ucs, Edge=Extend

Select cutting edges …

Select objects or <select all>:

(By entering the EXTEND command, y'all volition at present see the settings are set for this command every bit well.)

Command:

Author'S COMMENTS: The way the TRIM and EXTEND commands projects into 3D space can be configured in your AutoCAD software. These settings are saved in the registry which means they will affect all drawings modified on your figurer. You lot only are required to prepare either the TRIM or the EXTEND command and the settings will be used by both. Complete Step 4 to prepare your TRIM and EXTEND commands for the AutoCAD 3D book.

Pace 5

Enter the TRIM command equally shown below. The Electric current settings: should be fix as shown. If not, go dorsum and redo Step 4. If they friction match, abort the command.

Command: TRIM

Current settings: Projection=UCS, Border=Extend

Select boundary edges …

Step six

Enter the ROTATE3D, as shown below, to rotate the model 90 degrees counterclockwise around the Ten axis. (Effigy Pace vi)

Command: ROTATE3D

Current positive angle: ANGDIR=counterclockwise ANGBASE=0

Select objects:

Specify opposite corner: 22 institute

(Using a window, select all the objects)

Select objects:

Specify starting time bespeak on centrality or ascertain centrality by [Object/Last/View/Xaxis/Yaxis/Zaxis/2points]: X

(Rotate effectually the 10 axis.)

Specify a betoken on the X axis <0,0,0>:

(Printing Enter to select 0,0,0 equally the base point of the rotation.)

Specify rotation angle or [Reference]: 90

(The bending is positive since looking along the 10 axis towards 0,0,0, counterclockwise is the direction y'all want to rotate.)

Control:

Figure Step 6

AUTHOR'Southward COMMENTS: Unlike the ROTATE command, where the objects are rotated effectually a point, the ROTATE3D command rotates the objects effectually ii XYZ points or an axis.

Stride 7

Using what you learned in Stride 6, rotate the model 90 degrees around the Y centrality. This rotation volition have be negative 90 degrees since the rotation is clockwise. (Figure Footstep 7)

Figure Step vii

AUTHOR'Due south COMMENTS: To find whether the rotation direction is either counterclockwise or clockwise, look at 0,0,0 from the positive finish of the axis that y'all are rotating around.

Step 8

Change the UCS to the front and locate information technology at the center of the circumvolve. (Effigy Pace 8)

Figure Pace eight

Stride 9

On layer: Construction, draw a line from 0,0,0 at any angle and any length. The line y'all draw does not have to match the figure exactly. Draw it past middle. (Figure step nine)

Figure Step nine

Step 10

Change to the Front view to ensure that the line was fatigued correctly. (Figure Step 10)

Figure Step x

MUST KNOW: The TRIM and EXTEND commands should take the post-obit default settings when working in 3D:

Current settings: Projection=UCS, Edge=Extend

Step xi

Change the current view to SE Isometric and enter the ROTATE3D command, as shown below, to rotate the model using the Reference option. (Figure Step 11)

Command: ROTATE3D

Current positive angle: ANGDIR=counterclockwise ANGBASE=0

Select objects:

(Select all of the model objects in a window. Exercise not include the reference line that you just drew in the choice.)

Specify opposite corner: 22 institute

Select objects:

Specify beginning point on axis or ascertain axis past

[Object/Final/View/Xaxis/Yaxis/Zaxis/2points]: Z

(Rotating around the Z centrality.)

Specify a point on the Z axis <0,0,0>:

Specify rotation angle or [Reference]: R

Specify the reference angle <0>: (cen) P1

Specify 2d point: (cen) P2

Specify the new angle: (cen) P1

(Annotation that you have to select the P1 location twice.)

Specify second point: (cease) P3

Command:

Figure Step 11

MUST KNOW: Unlike the ROTATE control where the object is rotated around a point, the ROTATE3D uses ii XYZ points to rotated effectually. You can use the Ten, Y or Z centrality or two endpoints of a line.

Step 12

The wireframe model should at present appear as shown in Effigy Step 12A. Modify the current view to Forepart to ensure that the model was rotated correctly. (Effigy Footstep 12A and 12B)

Effigy Step 12A

Figure Footstep 12B

Author'Southward COMMENTS: There is no central for this workalong and any future workalongs in theAutoCAD 3D volume. Keys are supplied are for the lab exercises. The reason for this is I want to slowly remove your reliance on using keys to check the accurateness of your models. Since keys are not available to you after you lot consummate this book, you must learn how to check the accurateness of your models on your own.

Step 13

Relieve and shut the cartoon.

USER TIP: When using the ROTATE3D command, ensure that the ANGDIR and ANGBASE system variables are set as shown below. These setting volition display when y'all enter the command, as you can see below. Afterwards yous go more familiar using 3D, you can change these settings. While working on the AutoCAD 3D book, exit them set up as shown.

Command: ROTATE3D

Current positive angle: ANGDIR=counterclockwise ANGBASE=0

Cardinal Principles

1. While working in 3D, the TRIM and EXTEND commands should have the post-obit default settings: Project=UCS, Edge=Extend
2. The ROTATE command, used for a 2D rotate, uses a XY signal to rotate For a 3D rotate using the ROTATE3D command, ane of the axises, a line or two XYZ points must be specified to rotate effectually.
3. To observe whether the 3D rotation direction is counterclockwise or clockwise, wait at 0,0,0 from the positive terminate of the axis you are rotating effectually.

Lab Exercise viii-1

Time allowed: 60 minutes.

Drawing Name	Template	Units
AutoCAD 3D Lab 08-1	3D Layout English	Inches

Step 1

Depict all construction objects on layer: Structure and all model objects on layer: Model.

Footstep 2

Depict a wireframe model of the object shown in the figure. (Figure Step 2A, 2B, 2C,and 2d)

Stride 3

When complete, freeze layer: Construction.

Figure Step 2A
Dimensioned Multiview Drawing

Effigy Step 2B
Completed Wireframe Model SE Isometric View

Figure Step 2C
Solid Model – SE Isometric View

Figure Step second
Solid Model – NE Isometric View

Step four

Enter the UNITS command. In the Units dialogue box, set the Insertion Units to Inches. Change the location of the UCS to World and check the model with the key.

Footstep 5

Ensure that the USC is gear up to World and the electric current view is SE Isometric. (Figure Step 5)

Effigy Footstep 5

Step 6

Rotate the model ninety degrees around the X axis. (Effigy Footstep 6)

Figure Step half-dozen

Step 7

Rotate the model 90 degrees around the Y axis. (Figure Stride 7)

Figure Step seven

Step 8

Rotate the model 90 degrees around the X axis. (Figure Stride 8)

Effigy Stride 8

Pace ix

Rotate the model 90 degrees around the Z centrality. (Effigy Step ix)

Figure Footstep ix

Author'Southward COMMENTS: If you take note of where the WCS is located in each effigy and where is was located in the previous figure, it volition help yous select which axis to rotate around.

Pace 10

Save and close the drawing.

Lab Exercise viii-2

Time allowed: 40 minutes.

Drawing Proper name	Template	Units
AutoCAD 3D Lab 08-2	3D Layout English	Inches

Step 1

Describe all construction objects on layer: Construction and all model objects on layer: Model.

Step two

Describe a wireframe model of the object shown in the effigy. (Figure Footstep 2A, 2B, 2C, and 2D)

Step iii

When complete, freeze layer: Structure.

Figure Step 2A
Dimensioned Multiview Drawing

Effigy Step 2B
Completed Wireframe Model SE Isometric View

Figure Step 2C
Solid Model SE Isometric View

Effigy Step second
Solid Model NW Isometric View

Step iv

Enter the UNITS command. In the Units dialogue box, fix the Insertion Units to Inches. Change the location of the UCS to Earth and check the model with the key.

Step five

Relieve and close the cartoon.

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Source: https://opentextbc.ca/autocad3d/chapter/rotating-3d-models

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