Autocad Glass Hatch Patterns
Generally, to fill an area with a pattern hatches are used and there are plenty of ready-made hatch patterns available in AutoCAD but if you want to use your own custom hatch pattern then you can make it using a type of simple code and also using an express tool called Superhatch.
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. pattern-name, description A pattern definition also has one or more descriptor lines in the following format: angle, x-origin, y-origin, delta-x, delta-y, dash-1, dash-2, For example, the standard hatch pattern ANSI31 looks like.
And is defined as follows:.ANSI31, ANSI Iron, Brick, Stone masonry 45, 0,0, 0.125 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. 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. 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. 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.
Free Autocad Glass Hatch Pattern
Note: If you are creating a new PAT file, the PAT file and hatch pattern names must be identical. Create a header line that begins with an asterisk and includes a pattern name that is no more than 31 characters in length. For example,.ANSI31. Optionally, include a description for the hatch pattern by adding a comma and descriptive text after the pattern name. For example,.ANSI31, ANSI Iron, Brick, Stone masonry.
Create a descriptor line that includes. An angle at which the line is drawn. An X,Y origin point.
A delta-x of 0. A delta-y of any value For example, 45, 0,0, 0.125. Add a blank line after the descriptor line.