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com.supermap.data

Class GeoBSpline


  • public class GeoBSpline
extends Geometry
    The GeoBSpline class.

    This class is mainly used for CAD layer, it is the sub object of Geometry object.

    B-Spline Curves: it is a kind of curve, which consists of four or more than four control points, in which the direction and steepness of each section of the arc are controlled by the adjacent four control points.

    • Constructor Detail

      • GeoBSpline

        public GeoBSpline()
        Create a new GeoBSpline object.

      • GeoBSpline

        public GeoBSpline(GeoBSpline geoBSpline)
        Create a new GeoBSpline object that is the same with the given GeoBSpline object.
        Parameters:
        geoBSpline - The specified GeoBSpline object.

      • GeoBSpline

        public GeoBSpline(Point2Ds controlPoints)
        Creates a new GeoBSpline object according to the specified arguments.
        Parameters:
        controlPoints - control Points

    • Method Detail

      • getLength

        public double getLength()
        Returns the length of the GeoBSpline object.
        Returns:
        the length of the GeoBSpline object.
        Default:
        The default value is 0.

      • getControlPoints

        public Point2Ds getControlPoints()
        Returns the control point set.
        Returns:
        Control point collection.
        Default:
        The default value is null Point2Ds.

      • setControlPoints

        public void setControlPoints(Point2Ds controlPoints)
        Sets the control point set.
        Parameters:
        controlPoints - control Points

      • convertToLine

        public GeoLine convertToLine(int pointCountPerSegment)
        Converts the GeoBSpline object to the GeoLine object.
        Parameters:
        pointCountPerSegment - The number of vertices between two neighbor control points.
        Returns:
        The line collection object.

      • clone

        public GeoBSpline clone()
        Return a copy of the current GeoBSpline object.
        Specified by:
        clone in class Geometry
        Returns:
        The new GeoDatum object generated from the clone operation.

      • dispose

        public void dispose()
        Release the resource occupy by this object.
        Overrides:
        dispose in class Geometry
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