A utoCAD hatch library including a selection of over 300 royalty free AutoCAD hatch patterns and 800 seamless textures to download. Compatible with AutoCAD 2019 and LT too! An easily accessible 20 frame pull-down icon menus includes the AutoCAD Hatch Pattern names are listed on an easy to use vertical slider menu.
A standard library of hatch patterns is provided with the product that can be used as they are or modified to suit your needs. You can also create your own custom hatch patterns.
Hatch Patterns. Download.pat files of any Coronado Stone profile to create seamless patterns in Autocad and Revit. Entire Hatch Pattern Library.
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The standard hatch patterns that come with the product are stored in two different library files, the names of those files is dependent on which product or products have been installed:
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Hatch Pattern Definitions
Hatch patterns are defined in one or more definition files that have a .pat file extension. You can use the hatch patterns as they are, modify them, or create your own custom hatch patterns.
Regardless of where a definition is stored, hatch patterns have the same structure. They have a header line with a name, which begins with an asterisk and is no more than 31 characters long, and an optional description.
A pattern definition also has one or more descriptor lines in the following format:
For example, the standard hatch pattern ANSI31 looks like:
and is defined as follows:
The pattern name on the first line, *ANSI31, is followed by the description ANSI Iron, Brick, Stone masonry. This simple pattern definition specifies a line drawn at an angle of 45 degrees, the first line of the family of hatch lines is to pass through the drawing origin (0,0), and that the spacing between hatch lines of the family is to be 0.125 drawing units.
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Hatch pattern definitions follow these rules:
Each line in a pattern definition can contain up to 80 characters. You can include letters, numbers, and the special characters underline (_), hyphen (-), and dollar sign ($). However, you must begin a pattern definition with a letter or number, not a special character.
Blank lines and text to the right of a semicolon are ignored.
Each pattern line is considered to be the first member of a line family, created by applying the delta offsets in both directions to generate an infinite family of parallel lines.
The delta-x value indicates the displacement between members of the family in the direction of the line. It is used only for dashed lines.
The delta-y value indicates the spacing between members of the family; that is, it is measured perpendicular to the lines.
A line is considered to be of infinite length. A dash pattern is superimposed on the line.
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Note: A blank line must be placed after the last hatch pattern definition in a PAT file. If a blank line is not placed after the last hatch pattern definition, the last hatch pattern definition will not be accessible when using the hatch pattern file. See 'FAQ: Why can't I use my custom hatch pattern (PAT) files?' for additional conditions that could affect the use of custom hatch patterns.
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The process of hatching consists of expanding each line in the pattern definition to its infinite family of parallel lines. All selected objects are checked for intersections with any of these lines; any intersections cause the hatch lines to be turned on and off as governed by the hatching style. Each family of hatch lines is generated parallel to an initial line with an absolute origin to guarantee proper alignment.
Display of Dense Hatch Patterns
If you create a very dense hatch pattern, the program may reject the hatch and display a message indicating that the hatch scale is too small or its dash length too short. Change the maximum number of hatch lines by setting the HPMAXLINES system variable to a whole number between 0 and 10000000 (ten million), in AutoCAD 2008-based products and later.
In AutoCAD 2007-based products and earlier, the MaxHatch environment variable was required to change the maximum number of hatch lines that the program would draw:
In AutoCAD LT, use SETENV and enter a valid number.
In non-LT products, use the AutoLISP expression (setenv 'MaxHatch' 'n') where n is a valid number.
Note: In either case, when changing the value of MaxHatch, you must enter MaxHatch with the capitalization as shown.
Topics in this section
To Create a Simple Hatch Pattern
Related Concepts
Related Tasks
Select Other from the Pattern list on a hatch-related dialog box to open the Select Hatch Pattern dialog box. For example:
Select hatching in a cut view, right-click, and click Edit. Then select Other from the Pattern list in the Edit Hatch Pattern dialog box.
In an active drawing sketch, click Sketch tabDraw panelFill/Hatch Region . Click a closed sketch profile in the graphic window. Select Other from the Pattern list in the Hatch/Color Fill dialog box.
On the ribbon, click Manage tabStyles and Standards panelStyles Editor . Expand Hatch styles and click a Hatch style. Select Other from the Pattern list on the Hatch Style panel.
In the Select Hatch Pattern dialog box, click Load.
If appropriate, in the Load Hatch Pattern dialog box, click the Explore Directories button to display the Select Hatch Pattern File dialog box.
In the Select Hatch Pattern File dialog box, locate a PAT file, select it, and click Open. Valid hatch patterns from the selected PAT file display in the Load Hatch Patterns dialog box.
Select one or more hatch patterns to load and click OK.
In the Select Hatch Pattern File dialog box, select Offered for hatch patterns to add in the Pattern list of hatch-related dialog boxes.
Select a hatch pattern to use it as the default pattern in the Pattern list of the superordinate dialog box.
Click OK to close the Select Hatch Pattern dialog box.
Tip:Export hatches from a drawing to a PAT file: In the Select Hatch Pattern dialog box, select hatch patterns to export and click Export. Then specify the name of the destination PAT file.