Package org.gvsig.dwg.lib.util

Class GisModelCurveCalculator

java.lang.Object

org.gvsig.dwg.lib.util.GisModelCurveCalculator

public class GisModelCurveCalculator
extends Object

This class allows to obtain arcs and circles given by the most usual parameters, in a Gis geometry model. In this model, an arc or a circle is given by a set of points that defines it shape

Author:

jmorell

Constructor Summary

Constructors

Constructor	Description
GisModelCurveCalculator()

Method Summary

Modifier and Type	Method	Description
static List	calculateGisModelArc(double[] center, double r, double sa, double ea)	This method calculates an array of Point2D that represents an arc.
static List	calculateGisModelBulge(List newPts, double[] bulges)	This method applies an array of bulges to an array of Point2D that defines a polyline.
static List	calculateGisModelCircle(Point2D c, double r)	This method calculates an array of Point2D that represents a circle.
static List	calculateGisModelEllipse(Point2D center, Point2D majorAxisVector, double axisRatio, double initAngle, double endAngle)	This method calculates an array of Point2D that represents a ellipse.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

GisModelCurveCalculator

public GisModelCurveCalculator()

Method Details

calculateGisModelCircle

public static List calculateGisModelCircle(Point2D c,
 double r)

This method calculates an array of Point2D that represents a circle. The distance between it points is 1 angular unit

Parameters:

c - Point2D that represents the center of the circle

r - double value that represents the radius of the circle

Returns:

Point2D[] An array of Point2D that represents the shape of the circle

calculateGisModelEllipse

public static List calculateGisModelEllipse(Point2D center,
 Point2D majorAxisVector,
 double axisRatio,
 double initAngle,
 double endAngle)

This method calculates an array of Point2D that represents a ellipse. The distance between it points is 1 angular unit

Parameters:

center - Point2D that represents the center of the ellipse

majorAxisVector - Point2D that represents the vector for the major axis

axisRatio - double value that represents the axis ratio

initAngle - double value that represents the start angle of the ellipse arc

endAngle - double value that represents the end angle of the ellipse arc

Returns:

Point2D[] An array of Point2D that represents the shape of the ellipse

calculateGisModelArc

public static List calculateGisModelArc(double[] center,
 double r,
 double sa,
 double ea)

This method calculates an array of Point2D that represents an arc. The distance between it points is 1 angular unit

Parameters:

r - double value that represents the radius of the arc

sa - double value that represents the start angle of the arc

ea - double value that represents the end angle of the arc

c - Point2D that represents the center of the arc

Returns:

Point2D[] An array of Point2D that represents the shape of the arc

calculateGisModelBulge

public static List calculateGisModelBulge(List newPts,
 double[] bulges)

This method applies an array of bulges to an array of Point2D that defines a polyline. The result is a polyline with the input points with the addition of the points that define the new arcs added to the polyline

Parameters:

newPts - Base points of the polyline

bulges - Array of bulge parameters

Returns:

Polyline with a new set of arcs added and defined by the bulge parameters