// **********************************************************************
//
// <copyright>
//
// BBN Technologies
// 10 Moulton Street
// Cambridge, MA 02138
// (617) 873-8000
//
// Copyright (C) BBNT Solutions LLC. All rights reserved.
//
// </copyright>
// **********************************************************************
//
// $Source: /cvs/distapps/openmap/src/openmap/com/bbn/openmap/layer/link/LinkArc.java,v $
// $RCSfile: LinkArc.java,v $
// $Revision: 1.7 $
// $Date: 2009/01/21 01:24:41 $
// $Author: dietrick $
//
// **********************************************************************
package com.bbn.openmap.layer.link;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import com.bbn.openmap.omGraphics.OMArc;
import com.bbn.openmap.proj.Length;
import com.bbn.openmap.proj.coords.LatLonPoint;
import com.bbn.openmap.util.Debug;
/**
* Reading and writing a Link protocol version of a circle.
*/
public class LinkArc implements LinkGraphicConstants, LinkPropertiesConstants {
/**
* Write an arc with lat/lon placement.
*
* @param latPoint latitude of center point, decimal degrees
* @param lonPoint longitude of center point, decimal degrees
* @param w horizontal diameter of arc, pixels
* @param h vertical diameter of arc, pixels
* @param s starting angle of arc, decimal degrees
* @param e angular extent of arc, decimal degrees
* @param properties attributes for the arc.
* @param dos DataOutputStream.
* @throws IOException
*/
public static void write(float latPoint, float lonPoint, int w, int h,
float s, float e, LinkProperties properties,
DataOutputStream dos) throws IOException {
LinkArc.write(latPoint, lonPoint, 0, 0, w, h, s, e, properties, dos);
}
/**
* Write an arc with x/y placement.
*
* @param x1 window position of center point from left of window,
* in pixels
* @param y1 window position of center point from top of window,
* in pixels
* @param w horizontal diameter of arc, pixels
* @param h vertical diameter of arc, pixels
* @param s starting angle of arc, decimal degrees
* @param e angular extent of arc, decimal degrees
* @param properties attributes for the arc.
* @param dos DataOutputStream.
* @throws IOException
*/
public static void write(int x1, int y1, int w, int h, float s, float e,
LinkProperties properties, DataOutputStream dos)
throws IOException {
dos.write(Link.ARC_HEADER.getBytes());
dos.writeByte(GRAPHICTYPE_ARC);
dos.writeByte(RENDERTYPE_XY);
dos.writeInt(x1);
dos.writeInt(y1);
dos.writeInt(w);
dos.writeInt(h);
dos.writeFloat(s);
dos.writeFloat(e);
properties.write(dos);
}
/**
* Writing an arc at a x, y, offset to a Lat/Lon location.
*
* @param latPoint latitude of center of arc.
* @param lonPoint longitude of center of arc.
* @param offset_x1 # pixels to the right the center will be moved
* from lonPoint.
* @param offset_y1 # pixels down that the center will be moved
* from latPoint.
* @param w horizontal diameter of arc, pixels.
* @param h vertical diameter of arc, pixels.
* @param s starting angle of arc, decimal degrees
* @param e angular extent of arc, decimal degrees
* @param properties attributes for the arc.
* @param dos DataOutputStream.
* @throws IOException
*/
public static void write(float latPoint, float lonPoint, int offset_x1,
int offset_y1, int w, int h, float s, float e,
LinkProperties properties, DataOutputStream dos)
throws IOException {
dos.write(Link.ARC_HEADER.getBytes());
dos.writeByte(GRAPHICTYPE_ARC);
dos.writeByte(RENDERTYPE_OFFSET);
dos.writeFloat(latPoint);
dos.writeFloat(lonPoint);
dos.writeInt(offset_x1);
dos.writeInt(offset_y1);
dos.writeInt(w);
dos.writeInt(h);
dos.writeFloat(s);
dos.writeFloat(e);
properties.write(dos);
}
/**
* Write an arc with a certain radius at a Lat/Lon location.
* Assumes the radius is in decimal degrees.
*
* @param latPoint latitude of center point, decimal degrees
* @param lonPoint longitude of center point, decimal degrees
* @param radius distance in decimal degrees
* @param s starting angle of arc, decimal degrees
* @param e angular extent of arc, decimal degrees
* @param properties attributes for the arc.
* @param dos DataOutputStream.
* @throws IOException
*/
public static void write(float latPoint, float lonPoint, float radius,
float s, float e, LinkProperties properties,
DataOutputStream dos) throws IOException {
LinkArc.write(latPoint, lonPoint, radius, -1, -1, s, e, properties, dos);
}
/**
* Write an arc with a certain radius at a Lat/Lon location, and
* allows you to specify units of the radius.
*
* @param latPoint latitude of center of arc in decimal degrees
* @param lonPoint longitude of center of arc in decimal degrees
* @param radius distance
* @param units integer value for units for distance - KM, MILES,
* NMILES. If < 0, assume decimal degrees.
* @param s starting angle of arc, decimal degrees
* @param e angular extent of arc, decimal degrees
* @param properties attributes for the arc.
* @param dos DataOutputStream.
* @throws IOException
*/
public static void write(float latPoint, float lonPoint, float radius,
int units, float s, float e,
LinkProperties properties, DataOutputStream dos)
throws IOException {
LinkArc.write(latPoint,
lonPoint,
radius,
units,
-1,
s,
e,
properties,
dos);
}
/**
* Write an arc with a certain radius at a Lat/Lon location, and
* allows you to specify units of the radius, as well as the
* number of vertices to use to approximate the arc.
*
* @param latPoint latitude of center of arc in decimal degrees
* @param lonPoint longitude of center of arc in decimal degrees
* @param radius distance
* @param units integer value for units for distance - OMArc.KM,
* OMArc.MILES, OMArc.NMILES. If < 0, assume decimal
* degrees.
* @param nverts number of vertices for the poly-arc (if < 3,
* value is generated internally).
* @param s starting angle of arc, decimal degrees
* @param e angular extent of arc, decimal degrees
* @param properties attributes for the arc.
* @param dos DataOutputStream.
* @throws IOException
*/
public static void write(float latPoint, float lonPoint, float radius,
int units, int nverts, float s, float e,
LinkProperties properties, DataOutputStream dos)
throws IOException {
// Write this out...
dos.write(Link.ARC_HEADER.getBytes());
dos.writeByte(GRAPHICTYPE_ARC);
dos.writeByte(RENDERTYPE_LATLON);
dos.writeFloat(latPoint);
dos.writeFloat(lonPoint);
dos.writeFloat(radius);
dos.writeByte(units);
dos.writeInt(nverts);
dos.writeFloat(s);
dos.writeFloat(e);
properties.write(dos);
}
public static void write(OMArc arc, Link link, LinkProperties props)
throws IOException {
LatLonPoint llp;
switch (arc.getRenderType()) {
case OMArc.RENDERTYPE_LATLON:
llp = arc.getLatLon();
LinkArc.write((float) llp.getLatitude(),
(float) llp.getLongitude(),
(float) arc.getRadius(),
(float) arc.getStartAngle(),
(float) arc.getExtentAngle(),
props,
link.dos);
break;
case OMArc.RENDERTYPE_XY:
LinkArc.write(arc.getX(),
arc.getY(),
arc.getWidth(),
arc.getHeight(),
(float) arc.getStartAngle(),
(float) arc.getExtentAngle(),
props,
link.dos);
break;
case OMArc.RENDERTYPE_OFFSET:
llp = arc.getLatLon();
LinkArc.write((float) llp.getLatitude(),
(float) llp.getLongitude(),
arc.getOffX(),
arc.getOffY(),
arc.getWidth(),
arc.getHeight(),
(float) arc.getStartAngle(),
(float) arc.getExtentAngle(),
props,
link.dos);
break;
default:
Debug.error("LinkArc.write: arc rendertype unknown.");
}
}
/**
* Read the arc protocol off the data input, and return an OMArc.
* Assumes the header for the graphic has already been read.
*
* @param dis the DataInputStream
* @return OMArc
* @throws IOException
* @see com.bbn.openmap.omGraphics.OMLine
*/
public static OMArc read(DataInputStream dis) throws IOException {
return read(dis, null);
}
/**
* Read the arc protocol off the data input, and return an OMArc.
* Assumes the header for the graphic has already been read.
*
* @param dis the DataInputStream
* @param propertiesBuffer a LinkProperties object used to cache previous
* settings that can be set on the OMArc being read.
* @return OMArc
* @throws IOException
* @see com.bbn.openmap.omGraphics.OMArc
*/
public static OMArc read(DataInputStream dis, LinkProperties propertiesBuffer) throws IOException {
OMArc arc = null;
float lat, lon, radius, start, extent;
int x, y, w, h;
int renderType = dis.readByte();
switch (renderType) {
case RENDERTYPE_LATLON:
lat = dis.readFloat();
lon = dis.readFloat();
radius = dis.readFloat();
start = dis.readFloat();
extent = dis.readFloat();
int units = dis.readByte();
int nverts = dis.readInt();
Length unit = Length.DECIMAL_DEGREE;
switch (units) {
case 0:
unit = Length.KM;
break;
case 1:
unit = Length.MILE;
break;
case 2:
unit = Length.NM;
break;
default:
}
arc = new OMArc(new LatLonPoint.Double(lat, lon), radius, unit, nverts, start, extent);
break;
case RENDERTYPE_XY:
x = dis.readInt();
y = dis.readInt();
w = dis.readInt();
h = dis.readInt();
start = dis.readFloat();
extent = dis.readFloat();
arc = new OMArc(x, y, w, h, start, extent);
break;
case RENDERTYPE_OFFSET:
lat = dis.readFloat();
lon = dis.readFloat();
x = dis.readInt();
y = dis.readInt();
w = dis.readInt();
h = dis.readInt();
start = dis.readFloat();
extent = dis.readFloat();
arc = new OMArc(lat, lon, x, y, w, h, start, extent);
break;
default:
}
if (arc != null) {
LinkProperties.loadPropertiesIntoOMGraphic(dis,
arc,
propertiesBuffer);
}
return arc;
}
}