org.squigle.layers
Class LayerComposite

java.lang.Object
  |
  +--org.squigle.layers.LayerComposite

public class LayerComposite

extends java.lang.Object

LayerComposite represents a stack of layers for a set geographic bounds. It unifies the paint functionality for the child layers, provides an import from maptree function (useful for the map client), and export functionality (useful for the map compiler)

Field Summary

int	height
java.lang.String	id
float	screenDiag
double	vp_lat_1
double	vp_lat_2
double	vp_lon_1
double	vp_lon_2
int	width

Constructor Summary

LayerComposite(java.awt.Component c, java.lang.String id)
LayerComposite constructor

Method Summary

void	addLayer(org.squigle.layers.Layer l) adds a layer into the layer composite
void	export(java.lang.String filename) exports a writable LayerComposite out into a maptree (a .gro and .meta file)
void	handlers(java.awt.Graphics g) loops through the layers assciated with the composite, calling the layer's metaData handler processor.
void	load(java.lang.String filename) loads a maptree into the LayerComposite from a file.
void	paint(java.awt.Graphics g) the loops through all layers associated with this composite, passing the current viewport dimensions, and calling their paint function

Methods inherited from class java.lang.Object

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

Field Detail

width

public int width

height

public int height

vp_lon_1

public double vp_lon_1

vp_lat_1

public double vp_lat_1

vp_lon_2

public double vp_lon_2

vp_lat_2

public double vp_lat_2

screenDiag

public float screenDiag

id

public java.lang.String id

Constructor Detail

LayerComposite

public LayerComposite(java.awt.Component c,
                      java.lang.String id)

LayerComposite constructor

Method Detail

paint

public void paint(java.awt.Graphics g)

the loops through all layers associated with this composite, passing the current viewport dimensions, and calling their paint function

handlers

public void handlers(java.awt.Graphics g)

loops through the layers assciated with the composite, calling the layer's metaData handler processor.

addLayer

public void addLayer(org.squigle.layers.Layer l)

adds a layer into the layer composite

load

public void load(java.lang.String filename)
          throws java.io.IOException

loads a maptree into the LayerComposite from a file. loading = memory mapping the .geo and .meta files that correspond to the filename passed, decoding each layer in the file and construction and adding those layers to the LayerComposite

java.io.IOException

export

public void export(java.lang.String filename)

exports a writable LayerComposite out into a maptree (a .gro and .meta file)