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## com.vividsolutions.jts.util
Class GeometricShapeFactory

    java.lang.Object
      com.vividsolutions.jts.util.GeometricShapeFactory

public class GeometricShapeFactory
extends java.lang.Object

Computes various kinds of common geometric shapes. Allows various ways of specifying the location and extent of the shapes, as well as number of line segments used to form them.

Example:

      GeometricShapeFactory gsf = new GeometricShapeFactory();
      gsf.setSize(100);
      gsf.setNumPoints(100);
      gsf.setBase(new Coordinate(0, 0));
      Polygon rect = gsf.createRectangle();

Version:
  1.7

Constructor Summary
`GeometricShapeFactory()` Create a shape factory which will create shapes using the default `GeometryFactory`.
`GeometricShapeFactory(GeometryFactory geomFact)` Create a shape factory which will create shapes using the given `GeometryFactory`.

Method Summary
`LineString` | `createArc(double startAng, double endAng)` Creates a elliptical arc, as a LineString.
`Polygon` | `createCircle()` Creates a circular `Polygon`.
`Polygon` | `createRectangle()` Creates a rectangular `Polygon`.
`void` | `setBase(Coordinate base)` Sets the location of the shape by specifying the base coordinate (which in most cases is the lower left point of the envelope containing the shape).
`void` | `setCentre(Coordinate centre)` Sets the location of the shape by specifying the centre of the shape's bounding box
`void` | `setHeight(double height)` Sets the height of the shape.
`void` | `setNumPoints(int nPts)` Sets the total number of points in the created `Geometry`.
`void` | `setSize(double size)` Sets the size of the extent of the shape in both x and y directions.
`void` | `setWidth(double width)` Sets the width of the shape.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### GeometricShapeFactory

    public GeometricShapeFactory()

  Create a shape factory which will create shapes using the default `GeometryFactory`.

### GeometricShapeFactory

    public GeometricShapeFactory(GeometryFactory geomFact)

  Create a shape factory which will create shapes using the given `GeometryFactory`.

Parameters:
  `geomFact` - the factory to use

Method Detail

### setBase

    public void setBase(Coordinate base)

  Sets the location of the shape by specifying the base coordinate (which in most cases is the lower left point of the envelope containing the shape).

  Parameters:
    `base` - the base coordinate of the shape

### setCentre

    public void setCentre(Coordinate centre)

  Sets the location of the shape by specifying the centre of the shape's bounding box

  Parameters:
    `centre` - the centre coordinate of the shape

### setNumPoints

    public void setNumPoints(int nPts)

  Sets the total number of points in the created `Geometry`. The created geometry will have no more than this number of points, unless more are needed to create a valid geometry.

### setSize

    public void setSize(double size)

  Sets the size of the extent of the shape in both x and y directions.

  Parameters:
    `size` - the size of the shape's extent

### setWidth

    public void setWidth(double width)

  Sets the width of the shape.

  Parameters:
    `width` - the width of the shape

### setHeight

    public void setHeight(double height)

  Sets the height of the shape.

  Parameters:
    `height` - the height of the shape

### createRectangle

    public Polygon createRectangle()

  Creates a rectangular `Polygon`.

  Returns:
    a rectangular Polygon

### createCircle

    public Polygon createCircle()

  Creates a circular `Polygon`.

  Returns:
    a circle

### createArc

    public LineString createArc(double startAng,
                                double endAng)

  Creates a elliptical arc, as a LineString.

  Returns:
    an elliptical arc

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