Feature Adjustment
IT3D-DBGS provides tools to create road and water networks from raw
source data. IT3D-DBGS uses the GIS topology to create road and water
intersections and bridges. These intersections and bridges are used to
control the 3D geometry creation process.
With the integration of feature editing, operations such as vertex
simplification or introduction and centerline Z analysis can be done. This
integrated tool gives you the ability to create a road or water network that
is very realistic.
3D Geometry Creation
IT3D-DBGS has a very robust road and intersection generation algorithm.
The roads can be generated from a cross-sectional profile that contains the
road surface, gutters, and sidewalks. The intelligent algorithm uses
priority based rules to smoothly transition between different profile
configurations. It also supports non symmetrical road profiles, so you can
create realistic road data such as bus stops and passing lanes.
The intersections are used to support the expansion of roads where they
intersect. The types of intersections supported are continuous, trimmed, or
generic.
- Continuous intersections are where only two roads intersect.
These intersections are given continuous texture across the intersection
so you are visually unaware of this type of intersection.
- Trimmed intersections also have continuous texture across the
intersection for the higher priority features and the other roads are
trimmed to this intersection.
- Generic intersections are where you have 5+ roads connecting to
the intersection. This intersection will have a generic texture assigned
to the road surface and stitched to the other roads.
All of the intersections support the components. So if there are roads
with sidewalks at the intersection, the sidewalks smoothly transitions from
one road to another.
Bridge Extrusion
Bridges are extruded from the centerline data and a cross sectional
profile. The elevation assignment of bridges use DOT tables to ensure the
correct slope of ramp up to the bridge. The bridge and road intersection can
be angled unlike some other DBGS solutions.
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