Package geomss.geom.reader.iges

Class Entity126_BSplineCurve

  • public class Entity126_BSplineCurve
extends GeomSSEntity

    RATIONAL B-SPLINE CURVE ENTITY - This entity represents a Rational B-Spline Curve that may be isolated or used as a component of a Composite Curve Entity or a Subfigure Entity. This represents a parametric equation obtained by dividing two summations involving weights (which are real numbers), the control points, and B-Spline basis functions.

    This entity, when read from an IGES file, is converted to a NURBS curve. This entity type can be written out to an IGES file. When reading in this entity, all plane parameters are stored in the user data with the prefix "IGES_126_" followed by the parameter name.

    Modified by: Joseph A. Huwaldt

    Version:
    April 7, 2016
    Author:
    Joseph A. Huwaldt, Date: August 23, 2010

    • Constructor Detail

      • Entity126_BSplineCurve

        public Entity126_BSplineCurve​(Part p,
                              DirEntry de)
        Default constructor.
        Parameters:
        p - part to which this entity is contained
        de - Directory Entry for this entity

      • Entity126_BSplineCurve

        public Entity126_BSplineCurve​(Part part,
                              int DEnum,
                              NurbsCurve geom)
        Create this entity from the specified GeomSS geometry element.
        Parameters:
        part - The Part to which this entity is contained.
        DEnum - The line count from the start of the Directory Entry Section for this entry (odd number).
        geom - The GeomSS GeomPoint geometry to return an Entity for.

    • Method Detail

      • check

        public void check()
        Checks to see if the entity is correct. The following restrictions are imposed: - The Label Display Pointer shall be 0
        Specified by:
        check in class Entity

      • read

        public void read​(java.io.RandomAccessFile in)
          throws java.io.IOException
        Read the Parameter Data from the String read in by the superclass.
        Overrides:
        read in class Entity
        Parameters:
        in - input file
        Throws:
        java.io.IOException

      • canWrite

        public boolean canWrite()
        Returns true if the Entity can be written to an exchange file.
        Overrides:
        canWrite in class Entity
        Returns:
        true

      • write

        public int write​(java.io.PrintWriter writer,
                 int PDnum)
          throws java.io.IOException
        Write this entity's parameter data to the specified PrintWriter.
        Overrides:
        write in class Entity
        Parameters:
        writer - The PrintWriter to write the parameter data for this entity to.
        PDnum - The starting Parameter Data row index number.
        Returns:
        The Parameter Data row index number for the next row.
        Throws:
        java.io.IOException

      • getTypeString

        public java.lang.String getTypeString()
        Returns a short String describing this Entity object's type.
        Specified by:
        getTypeString in class Entity
        Returns:
        A short String describing this Entity object's type.

      • toString

        public java.lang.String toString()
        Dump to String.
        Overrides:
        toString in class Entity
        Returns:
        String containing the resulting text.