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Landxml Import Export - Geodetic & Construction Workflow

by Jan Holinka·Workflow

Images © Jan Holinka. Used for product review; image policy.

Why we like it

Earns its place in the Superhive library for making Blender a practical, flexible route to LandXML-based terrain data, letting smaller teams and independent professionals prepare machine control models without relying on dedicated CAD software.

What is Landxml Import Export - Geodetic & Construction Workflow?

LandXML Import Export brings LandXML data in and out of Blender for geodetic, terrain, and construction workflows where real-world coordinates matter. On import it reads TIN surfaces, breaklines, contours, boundaries, CgPoints, and PlanFeatures, letting you inspect existing LandXML data. On export it writes TIN surfaces and breaklines, so you can prepare machine control data for GPS-guided earthworks and construction.

Built around real-world positioning, the add-on gives control over the coordinate reference of the Blender origin, axis orientation, the XY order used in the LandXML file, origin calculation from a known survey point, and centered import with preserved coordinate reference. Metric and imperial units are supported: LandXML units are detected automatically on import, geometry is converted internally to Blender meters (1 BU = 1 m), and reference values stay in the original survey units.

During export, TIN surfaces are generated from mesh faces and triangulated automatically, while breaklines come from separate edge-only mesh objects that must each form a single connected non-branching polyline. Both are gathered from the active collection, and invalid breakline objects are skipped and reported. The interface sits in the 3D Viewport N panel under Survey.

Who is Landxml Import Export - Geodetic & Construction Workflow best for?

Landxml Import Export - Geodetic & Construction Workflow is best for terrain modeling, geodetic workflows, construction preparation, excavation planning, machine control model creation, and LandXML inspection and conversion.

How much does Landxml Import Export - Geodetic & Construction Workflow cost?

Landxml Import Export - Geodetic & Construction Workflow is completely free to download and use.

Key features

  • Imports TIN surfaces, breaklines, contours, boundaries, CgPoints, and PlanFeatures from LandXML
  • Exports TIN surfaces and breaklines to LandXML from Blender geometry
  • TIN surfaces generated from mesh faces and triangulated automatically on export; breaklines drawn from separate edge-only mesh objects
  • Control over the Blender origin's coordinate reference, axis orientation, XY order, origin from a known survey point, and centered import with preserved reference
  • Metric and imperial unit support with automatic detection on import and internal conversion to Blender meters (1 BU = 1 m)
  • Export validation that skips and reports invalid branching breakline objects
  • Interface located in the 3D Viewport N panel under Survey

Tags

#landxml#blender#geodetic#terrain#breaklines#machine-control#tin#import-export

Frequently asked questions

Does LandXML Import Export work as a Blender extension?

LandXML Import Export is listed as Blender Extension Compatible, so it fits into Blender's extension system. It's an add-on aimed at geodetic, terrain, and construction workflows, handling import and export of LandXML data directly inside Blender. Once installed, its interface lives in the 3D Viewport N panel under a Survey tab, where you run both import and export. For the exact Blender versions supported and current installation steps, check the developer's page before setting it up.

Where do I find LandXML Import Export in Blender?

LandXML Import Export places its interface in the 3D Viewport, under the N panel in a Survey tab labeled LandXML Import Export. From there you run both import and export operations. On export, TIN surfaces and breaklines are gathered from the active collection, so organizing your geometry into the right collection matters before you export. TIN surfaces are built from mesh faces, while breaklines come from separate edge-only mesh objects. For full setup details, see the developer's page.

How does LandXML Import Export handle breaklines on export?

LandXML Import Export exports breaklines from separate edge-only mesh objects, and each object must form a single connected non-branching polyline. During export it validates these objects and automatically skips and reports any invalid branching ones, which helps prevent broken LandXML output. TIN surfaces, by contrast, are generated from mesh faces and triangulated automatically. Both TIN surfaces and breaklines are collected from the active collection at export time, so your source geometry needs to be arranged accordingly beforehand.

Does LandXML Import Export support imperial units?

LandXML Import Export supports both metric and imperial units. On import, LandXML units are detected automatically, and geometry is converted internally to Blender meters, where one Blender unit equals one meter. Reference values are kept in the original survey units, such as feet, and export writes correct output based on the current settings. This is aimed at keeping behavior consistent when working across different coordinate systems and software during survey and terrain work.

Is LandXML Import Export free to use?

LandXML Import Export is listed as free in this catalog, though licensing can change over time. For current pricing, licensing terms, and any purchase details, check the developer's page directly before you rely on it for a project. The add-on covers import of LandXML TIN surfaces, breaklines, contours, boundaries, CgPoints, and PlanFeatures, plus export of TIN surfaces and breaklines, so you can evaluate whether it fits your machine control and terrain preparation needs.

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