DGKC Control Documentation


Skip Navigation Links.
Start page
Quick Start
Search Page
Installation
What is new
Licensing
Collapse ModelsModels
Expand DG Kernel ControlDG Kernel Control
Expand API ReferenceAPI Reference
Expand ViewsViews
Expand Samples and TutorialsSamples and Tutorials
Expand GraphicsGraphics
Expand Math ObjectsMath Objects
Expand DeprecatedDeprecated
Redistribution
Model Viewer
Support
Skip Navigation LinksHome Page > Models > Entities > Geometry > Line Strips Go to ActiveX docs Search Documentation


Segment Strip Geometry

Segment Strip geometry represents a continuous sequence of straight segments joined together. Segment strips implement ISegmentStripGeometry_DG

Segment strips can be created with a call IObjectGenerator_DG.Create<ISegmentStripGeometry_DG>(), or by importing a VRML file  containing "IndexedLineSet" node.

Line Strips are derived from Point Sets to use all its properties. This means that to modify geometry and other base properties of a line strip one needs to query IPointSetGeometry_DG from ISegmentStripGeometry_DG or related IEntity_DG. When Color Per Vertex is true color of lines is interpolated between the ends of segments. Increasing IAppearance_DG.PointWidth will show points at joints during rendering.

Use IArray_DG as described in the Point Sets topic to add or remove sampling point.

Line Strips implement ICurve_DG interface,  which allows calculation of intermediate points and length

Properties:

Index - Array of integers, which refer to points in the base Point Array. Linked components of the strip are separated by index -1.

For an example, if the base point array has five points, Index (0, 1, 2, -1, 3, 4) will define two continuous components: (0,1,2) and (3,4). The internal sequence can be arbitrary including reversed or repeating indices.

If the strip consists of a single component it does not have to have -1 separators.