Format

AutoCAD Hatch Pattern

Summary

Name: AutoCAD Hatch Pattern
Identifiers: PUID: fmt/1103
Format type: Image (Raster)
Description: A hatch pattern consists of a repeating pattern of lines, dashes, and dots, and is used within AutoCAD to represent materials to be used within the manufacture of the object defined in the CAD drawing
File extensions: pat
Source: Digital Preservation Department / The National Archives
Developed by: Autodesk
Supported by: Autodesk

Note: Top line: asterisk, then a filename (up to 31 characters) that will start with a minimum of one letter or number, followed by an optional description then a line-ending. Second line: A minimum of 5 numeric (integer or floating point) values, representing Angle, X-origin, Y-origin, Delta-x, Delta-y (further values may represent optional dashes). Origins and Deltas may be negative or positive. A comma will follow each numeric value and each line will be terminated with a line ending.

Min Frag Length: Absolute from BOF
Offset: 0
Max offset: 0
Byte Sequence: 2A([30:39]|[41:5A]|[61:7A]){0-80}0D0A{0-10}[30:39]2C20{0-10}[30:39]2C([30:39]|2D[30:39]|2E[30:39]){0-10}2C20{0-10}[30:39]2C([30:39]|2D[30:39]|2E[30:39]){0-128}0D0A
Endianness: None