Create Polygons

Create polygon objects by various computational techniques.

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Depends upon technique used.

Straight line segments can be created by the following techniques:

• Angle and Distance
• Automatic
• Bearing and Distance
• Bearing and Distance Intersection
• Bearing Intersection
• Boundary
• Coordinate Difference
• Coordinates
• Distance and Offset
• Distance Intersection
• Existing Line
• Existing Vertex
• Freehand
• Grade and Terrain Model Intersection
• Image Intersection
• Terrain Model Colour Bands

Circular arc segments can be created by the following techniques:

• 3 Radial Vertices
• Automatic
• Centre and Radius
• Chord, Bearing and Distance
• Existing Line
• Number of Segments
• Segment Distance
• Start, Centre and Distance
• Start, Centre and End
• Start, End and Radius

Spline segments can be created by the following techniques:

• Angle and Distance
• Automatic
• Bearing and Distance
• Bearing and Distance Intersection
• Bearing Intersection
• Coordinate Difference
• Coordinates
• Distance and Offset
• Distance Intersection
• Existing Line
• Existing Vertex
• Freehand
• Image Intersection

Controls available are dependent upon the technique used.

Click one of the above buttons with a tentative selection in the model view, to accept the selection and perform the action.

• Polygons are created on the active layer.
• The Appearance properties of polygons are set by the layer but can be overridden via the Attributes tab.
• Create polygons with the colour By Background to block out objects in a plan that are on a visible layer. The layer drawing order will determine which objects are drawn before the polygon.
• Click the Attributes tab to view or edit automatically created attributes.
• Self intersecting polygons are invalid and will not be created.

• Create Tool
• Modify Tool
• Naming Options
• Arc Components