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FlashMNT - Digital Terrain Model

Triangulation, contour lines, volumes.

FlashMNT is a tool that allows the creation of a Digital Terrain Model and 3D computations. From points and/or breaklines, create a DTM, then use the various fonctions of FlashMNT to apply a mesh, color a DTM by altitudes, compute cut and fill quantities, vizualise cross sections of the terrain, calculate areas and volumes, etc.

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Triangulation of points and polylines


From points and 3D polylines (representing the breaklines of the terrain), FlashMNT creates a "Delaunay" triangulation, faithful representation of the terrain, which will be the base of the various subsequent calculations.

FlashMNT also makes it possible to create a triangulation containing holes and to limit the triangulation zone to a predefined boundary.


FlashMNT is fast and can triangulate several million points (about 100,000 points / second)


Contour lines
Contour lines

Contour lines labeling
Contour lines labeling

Contour lines

Contour lines are created automatically from the DTM. Different parameters make it possible to adjust the equidistances, to filter the altitudes, to choose the type of smoothing of the curves, etc.

Among these parameters, we find :


Filter elevations

Check this box to limit the elevations between which the contour lines are drawn.

Entity type

Describes the type of entities used to draw the contours.

Smoothing type

Choose a Smoothing type to use.

The curves can then be labeled according to several methods.


Volumes of a DTM relative to a inclined reference plane

Volumes of a DTM relative to a inclined reference plane

Volumes - Cut and Fill quantities

FlashMNT calculates the volume of a DTM relative to a horizontal or inclined reference plane. The program calculates the volumes above and below this plane and then colors the different areas of cuts and fills.


FlashMNT also makes it possible to calculate the volumes of cuts and fills between 2 DTMs by the prisms method, and to draw the of intersection zones of the DTMs.


You can also equilibrate the cuts and fills by moving in the Z direction the 2nd DTM



Visualization of a cross section
Visualization of a cross section

Cross sections

This tool allows you to perform and visualize cross sections.


Click 2 points representing the cross section to create, then visualize and draw it according to different parameters :

Cross section style

Creation parameters



Slicing of a DTM by Elevations
Slicing of a DTM by Elevations

Creation of a Mesh
Creation of a Mesh

Slope arrows of the DTM
Slope arrows of the DTM

All functions

FlashMNT comes with more than 30 easy to use functions :

3D Polylines


Surfaces and volumes

Contour lines

Visualization of a Cross Section

Creation of a Mesh

Altitudes and Slopes

Objects Projection on a DTM

Points in the DTM

Faces of the DTM

Conversion of the DTM to ACIS solids




Download FlashMNT 6.18
Download demo version, fully functional but limited to 20 days

Available for AutoCAD, BricsCAD and ZwCAD

Download FlashMNT 6.18 (32 and 64 bits)

How to install FlashMNT 6.18


Buy FlashMNT 6.18 - 299.00 € TTC
Get a license on the secure payment site Paypal

Enter the serial number of the software, then click 'Pay now'. You will be redirected to website to register. You'll then receive your license code by e-mail within minutes. (Make sure your anti-spam filter doesn't block messages from

Serial num :


Additional Information
Help - More information

You want more information on this application or on the site, on the means of payment or the purchase of several licenses, do not hesitate to contact me.

See also : Flashprofils - Road design
French version



To find your serial number, click the 'Help' button ( ) of the add-on toolbar.

A dialog box displays, showing this number (in blue) :