AUTOCAD - reducing spline curve control points, the advanced CAD practice (3)

When the number of control points of the spline curve is too many, it is not easy to modify, how to reduce the number of control points of the spline curve?

Execution method

1. Enter the edit spline command "SPLINEDIT" (shortcut key: SPE), and press the space bar.

Edit Spline Commands

2. Then select the spline curve, and then according to the prompt, enter the option "Fit data F", and then press the space bar.

Select Spline

Fit data F

3. Then enterOption "Delete D", after a space, specify the existing fitting point on the spline curve, click the control point to be deleted with the left mouse button, press Enter three times to exit the editing, and the deletion of the control point is completed.

Delete D

Specify existing fit points

Delete control point done

Let's draw an advanced practice problem with CAD Dream Drawing.

Analysis Description

1. You can modify the drawing mode and the line width of objects when drawing with polylines.

2. The "divide" command can "divide" the object by a fixed number.

target object

Operating Tools

Operating system: Windows10

CAD Software: CAD Dream Drawing

Steps

1. Click Point Style under the Format menu bar to open the "Point Style" dialog box, as shown below:

Open Point Styles dialog

2. Select the display obvious point style and click OK, as shown below:

Select point style

3. Enter the line (L) command on the command line to draw a straight line AD with a length of 150, as shown in the following figure:

Draw a line

4. Enter the DIVIDE command on the command line to divide the straight line AD into four equal line segments, and number the equally divided nodes (except for the middle point) as shown in the following figure:

Equally divided line

5. Enter the multi-line segment (PL) command on the command line, and enter the arc (A) after a point A is the starting point, as shown in the following figure:

Using the polyline command

6. Then enter the width (W) option to set the width of the starting point to 0; the width of the endpoint is set to 10, as shown in the following figure:

Set width for the first time

7. After the setting is completed, specify point B as the endpoint of the arc, as shown in the following figure:

Endpoint at point B

8. At this time, enter the width (W) option to set the width of the starting point to 10; the width of the endpoint is set to 0, as shown in the following figure:

Second modification width

9. Then we connect directly to point D to complete as shown below:

Endpoint at point D

10. When we repeat the above operation to the sixth step, use point A as the starting point of the arc; point C is the endpoint of the arc, as shown in the following figure:

Endpoint at point C

11. At this time, enter the width (W) option to set the width of the starting point to 10; set the width of the end point to 0, and connect to point D, as shown in the following figure:

Drawing completed