ArrowPaintHelper (JOSM)

java.lang.Object
- org.openstreetmap.josm.data.osm.visitor.paint.ArrowPaintHelper

```
public class ArrowPaintHelper
extends java.lang.Object
```
This class helps with painting arrows with fixed length along a path.

Since:

10827

Field Summary

Fields
Modifier and Type Field Description

private double cos

private double length

private double sin

Constructor Summary

Constructors
Constructor Description

ArrowPaintHelper(double radians, double length)
Creates a new arrow helper.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`double`	`getOnLineLength()`	Gets the length of the arrow along the line segment.
`void`	`paintArrowAt(MapPath2D path, MapViewState.MapViewPoint point, MapViewState.MapViewPoint fromDirection)`	Paint the arrow

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

- Field Detail
  - sin
```
private final double sin
```
  - cos
```
private final double cos
```
  - length
```
private final double length
```
- Constructor Detail
  - ArrowPaintHelper
```
public ArrowPaintHelper(double radians,
                        double length)
```
    Creates a new arrow helper.
    
    Parameters:
    
    radians - The angle of the arrow. 0 means that it lies on the current line. In radians
    
    length - The length of the arrow lines.
- Method Detail
  - paintArrowAt
```
public void paintArrowAt(MapPath2D path,
                         MapViewState.MapViewPoint point,
                         MapViewState.MapViewPoint fromDirection)
```
    Paint the arrow
    
    Parameters:
    
    path - The path to append the arrow to.
    
    point - The point to paint the tip at
    
    fromDirection - The direction the line is coming from.
  - getOnLineLength
```
public double getOnLineLength()
```
    Gets the length of the arrow along the line segment.
    
    Returns:
    
    the length along the line
    
    Since:
    
    12154