Summary

The GT_FLIP command in GeoTools allows users to reverse the direction of polyline vertices, making it an essential tool for controlling polyline orientation in BricsCAD, AutoCAD, ZWCAD, and ARES Commander.

GeoTool -> Polyline Tools -> Direction Control -> Flip (Reverse) direction

Flip (Reverse) Direction: GT_FLIP – GeoTools Command

Key Features Include:

• Polyline Direction Control:
  • Clockwise – Converts counterclockwise polylines to clockwise.
  • Counterclockwise – Converts clockwise polylines to counterclockwise.
  • Interchange – Reverses the direction of all selected polylines, regardless of orientation.
  • Low to High Z – Reverses polylines where the last vertex elevation is higher than the first.
  • High to Low Z – Reverses polylines where the last vertex elevation is lower than the first.
  • Display Graphically – Draws leader arrows to indicate polyline direction without actually flipping it.
• Retain Object Handle for Reversed Polylines:
  • Ensures that flipped polylines keep the same object handle, useful when working with external references.
  • This option increases processing time and does not work with polylines containing arc segments.
• Silent Mode Execution:
  • Option to hide the dialog box and run GT_FLIP with the last used settings for efficiency.
• Preserves Extended Entity Data (XData):
  • Ensures that any stored polyline data remains intact after reversal.

Benefits:

This tool is especially useful for surveying, road alignments, GIS mapping, and CNC toolpath adjustments, where polyline orientation is critical.