Khắc phục lỗi invalid selection trong autocad khi dùng superhatch

Superhatch is an express tools function supplied with AutoCAD (not LT but see the workaround below) that lets you quickly hatch with your own pattern, no programming or creation of pat files needed. AutoCAD hatch with image capability is a part of the superhatch function.

Instructions - Hatch with Seamless Textures

Download the image files you want to use and save on to your PC.

1. Type SUPERHATCH on the AutoCAD command line and pick "Image" button.

2. Browse to the image file.

3. Set Scale and Insertion point to "Select on Screen". Set Angle to zero.

4. Select insertion point within the hatch boundary pick and drag to scale image

5. AutoCAD prompts "Is the placement of this IMAGE acceptable? [Yes/No] : "

Type Y

6. AutoCAD prompts "Specify an option [Advanced options] :"

Pick a point within the hatch boundary

7. AutoCAD prompts "Use TFRAMES to toggle object frames on and off."

AutoCAD LT Superhatch Workaround (only for AutoCAD LT 2010 and later)

The hatch boundary should be a Polyline

Create a block

Use the MINSERT command to insert the block, set the rumber of rows and columns to extend beyond the area to be hatched.

A very good question was asked in in the comments section of the following post about creating custom hatches [found here]. That post was about creating custom hatches using lines within a 1×1 square and then having the ability so save that custom hatch pattern to its own file and copying the contents into the bottom of your ACAD.PAT file that is located in your ACAD support path. The hatch pattern LISP routine was originally posted at Cadalyst.com 10 years ago and still works great (see why I like LISP so much) it can be [found here].

The question was basically – Why wont this routine work even though I am using nothing but lines and they all fit into the 1×1 square?

I was sent the file that had the linework and I had the same results.

Here is a snap shot of the desired hatch pattern.

During the SAVEHATCH portion of the routine it showed errors in the command line history of “invalid angles”…

So I tried changing UNITS and “Angle Type” but I still got this error and gave up on trying to figure that out.

Welcome to Express Tool SUPERHATCH!!!

First make a block of the objects that you want to define your hatch pattern.

Then launch the SUPERHATCH command. Also found on the Express Tools tab > Draw panel > Super Hatch

(Note: there are many options and ways of using this tool so I would suggest looking into the various options by hitting the F1 button after launching the tool)

Super Tip: One of my favorite uses of this tool is that you can make a hatch pattern out of curved objects!!!

There is also a great video by Lynn Allen demonstrating how to use SUPERHATCH and applying images as a hatch [found here]

The prompts for using a block are shown above and are listed below:

• Select “Block” from the Super Hatch menu
• Select the block name from the “Super Hatch – Insert” dialog box and click “OK”

(The next few prompts are similar to inserting a block)

• Specify an Insertion point:
• Specify the X scale factor:
• Specify the Y scale factor:
• Specify the rotation angle:
• Is the placement of this BLOCK acceptable?
• Specify block [Extents] First Corner :
• Other corner:
• Specify an option [Advanced options] : Pick inside of enclosed area to apply the hatch
• hit Enter

Notice that after the hatch has been applied that it is now a “group” and not a true hatch. So if you decide to modify the boundary, it will not be “associative”

About AutoCAD Tips

This blog serves as a knowledge base for myself (and anyone else) so that I can reference tips & tricks that I have learned and also refer others to it as well. I hope that this blog helps you learn at least one tip to make your drafting/design experience better.

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