Performance improvement

GstarCAD 2025 → What's new

GstarCAD 2024 optimizes the loading performance and display effect of super-large raster images, and solves the problem of long response time when opening or inserting large raster images.

Hatch preview remains quick and real-time even in complex drawings, and solves the problem of hatch preview lag in complex drawings.

In addition, lineweight self-drawing optimization solves the problem of unsupported semi-transparent display when lineweight is drawn, and improves the display performance when lineweight display is turned on.

Super-large raster image loading and display optimization

When using the OPEN, IMAGEATTACH command to open or load drawings with large-format raster images, the problem of long response time in the process of opening the drawings is solved by first quickly opening the preview image or picture attribute information obtained by the system at a low resolution and then replacing it with the original resolution drawing after the image resolution is completed.

This feature is not supported on systems below win7.

Hatch Quick Preview

A New HATCHQUICKPREVIEW system variable has been added, which is used to control whether or not a preview of the hatch pattern is displayed when the number of hatch entities is high.

When the drawing is scaled to a smaller size, some areas that could have been hatched with preview may not show the actual hatch preview due to pixel extrusion in the hatch quick preview.

Lineweight self-drawing optimization

Fixed lineweight line drawing is implemented using a self-drawing algorithm that solves the problem of fixed lineweight lines with semi-transparency not displaying transparency.

When there are more fixed lineweight lines in the drawing with lineweight display turned on, the display performance can be improved.

Also, to ensure backward compatibility, a new LWEIGHTDRAWCTRL system variable is added to control whether or not the self-drawing algorithm is enabled.