FlashMNT - Digital Terrain Model

Triangulation

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 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 :

Contour

• Choose a predefined model or use buttons to Create, Delete or Rename a model. Models allow you to create various configurations fitted to different scales.
• Order X : Orders represent the equidistances between contours. Order 1 would be the "master" contours, and orders 2 to 5 the intermediate contours.
• Interval : Equidistance between contours belonging to this order.
• Layer : Enter the name of the layer in which the contour line will be created, or click to choose it from a list.
• Color : Click to select a color.
• Width : Enter the polyline width.

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 - 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

 

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

• With titleblock
• Simple

Creation parameters

• Distances scale
• Altitudes scale
• Comparison plane
• Minimum distance between 2 points of the section

 

All functions

FlashMNT comes with more than 30 easy to use functions :

3D Polylines

• Creation of 3D Polylines from Objects
• Joining 3D polylines
• Offsetting 3D Polylines
• 3D polylines Optimization
• Position 3D polylines on points
• 3D polyline fast segment edition
• Distribution of the elevations of the vertices of a 3D polyline

Triangulation

• Boundary of a set of points
• Triangulation
• DTM verification.
• DTM Statistics
• Export points of the DTM

Surfaces and volumes

• Intersection Lines of 2 DTMs
• Computing the 3D Surface
• Volumes of a DTM with respect to an horizontal reference plane
• Volumes of a DTM with respect to an inclined reference plane
• Cut and Fill Computation between 2 DTMs
  

Contour lines

• Contour lines
• Contour lines labeling.

Visualization of a Cross Section

Creation of a Mesh

Altitudes and Slopes

• Slicing of a DTM by Elevation
• Slicing a DTM by Slope
• Slope arrows of the DTM
• Labeling slopes of the DTM
• Waterdrop flow
• Flooded areas

Objects Projection on a DTM

Points in the DTM

• Searching for Z Min and Z Max
• Find High and Low points
• Identification of a point inside the DTM

Faces of the DTM

• 3D Faces Permutation
• Cutting of Faces with 4 Sides

Conversion of the DTM to ACIS solids