// **********************************************************************
//
// <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/LinkBitmap.java,v $
// $RCSfile: LinkBitmap.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.OMBitmap;
import com.bbn.openmap.proj.ProjMath;
import com.bbn.openmap.util.Debug;
import com.bbn.openmap.util.PropUtils;
/**
* Reading and writing the Link protocol version of a bitmap..
*/
public class LinkBitmap implements LinkGraphicConstants,
LinkPropertiesConstants {
/**
* Lat/Lon placement.
*
* @param lt latitude of the top of the image.
* @param ln longitude of the left side of the image.
* @param w width of the image, in pixels.
* @param h height of the image, in pixels.
* @param bytes bytes for the bitmap.
* @param properties attributes for the bitmap.
* @param dos DataOutputStream.
* @throws IOException
*/
public static void write(float lt, float ln, int w, int h, byte[] bytes,
LinkProperties properties, DataOutputStream dos)
throws IOException {
dos.write(Link.BITMAP_HEADER.getBytes());
dos.writeByte(GRAPHICTYPE_BITMAP);
dos.writeByte(RENDERTYPE_LATLON);
dos.writeFloat(lt);
dos.writeFloat(ln);
dos.writeInt(w);
dos.writeInt(h);
dos.writeInt(bytes.length);
dos.write(bytes, 0, bytes.length);
properties.write(dos);
}
/**
* XY placement.
*
* @param x1 window location of the left side of the image.
* @param y1 window location of the top of the image.
* @param w width of the image, in pixels.
* @param h height of the image, in pixels.
* @param bytes bytes for the bitmap.
* @param properties attributes for the bitmap.
* @param dos DataOutputStream.
* @throws IOException
*/
public static void write(int x1, int y1, int w, int h, byte[] bytes,
LinkProperties properties, DataOutputStream dos)
throws IOException {
dos.write(Link.BITMAP_HEADER.getBytes());
dos.writeByte(GRAPHICTYPE_BITMAP);
dos.writeByte(RENDERTYPE_XY);
dos.writeInt(x1);
dos.writeInt(y1);
dos.writeInt(w);
dos.writeInt(h);
dos.writeInt(bytes.length);
dos.write(bytes, 0, bytes.length);
properties.write(dos);
}
/**
* Lat/lon placement with XY offset.
*
* @param lt latitude of the top of the image, before the offset.
* @param ln longitude of the left side of the image, before the offset.
* @param offset_x1 number of pixels to move image to the right.
* @param offset_y1 number of pixels to move image down.
* @param w width of the image, in pixels.
* @param h height of the image, in pixels.
* @param bytes bytes for the bitmap.
* @param properties attributes for the bitmap.
* @param dos DataOutputStream.
* @throws IOException
*/
public static void write(float lt, float ln, int offset_x1, int offset_y1,
int w, int h, byte[] bytes,
LinkProperties properties, DataOutputStream dos)
throws IOException {
dos.write(Link.BITMAP_HEADER.getBytes());
dos.writeByte(GRAPHICTYPE_BITMAP);
dos.writeByte(RENDERTYPE_OFFSET);
dos.writeFloat(lt);
dos.writeFloat(ln);
dos.writeInt(offset_x1);
dos.writeInt(offset_y1);
dos.writeInt(w);
dos.writeInt(h);
dos.writeInt(bytes.length);
dos.write(bytes, 0, bytes.length);
properties.write(dos);
}
/**
* Write a bitmap to the link.
*/
public static void write(OMBitmap bitmap, Link link, LinkProperties props)
throws IOException {
switch (bitmap.getRenderType()) {
case OMBitmap.RENDERTYPE_LATLON:
LinkBitmap.write((float) bitmap.getLat(),
(float) bitmap.getLon(),
bitmap.getWidth(),
bitmap.getHeight(),
bitmap.getBits(),
props,
link.dos);
break;
case OMBitmap.RENDERTYPE_XY:
LinkBitmap.write(bitmap.getX(),
bitmap.getY(),
bitmap.getWidth(),
bitmap.getHeight(),
bitmap.getBits(),
props,
link.dos);
break;
case OMBitmap.RENDERTYPE_OFFSET:
LinkBitmap.write((float) bitmap.getLat(),
(float) bitmap.getLon(),
bitmap.getX(),
bitmap.getY(),
bitmap.getBits(),
props,
link.dos);
break;
default:
Debug.error("LinkBitmap.write: bitmap rendertype not handled.");
}
}
/**
* Read a Bitmap off a DataInputStream. Assumes the Bitmap header has
* already been read.
*
* @param dis DataInputStream to read from.
* @return OMBitmap
* @throws IOException
* @see com.bbn.openmap.omGraphics.OMBitmap
*/
public static OMBitmap read(DataInputStream dis) throws IOException {
return read(dis, null);
}
/**
* Read a Bitmap off a DataInputStream. Assumes the Bitmap header has
* already been read.
*
* @param dis DataInputStream to read from.
* @param propertiesBuffer a LinkProperties object used to cache previous
* settings that can be set on the OMPoly being read.
* @return OMBitmap
* @throws IOException
* @see com.bbn.openmap.omGraphics.OMBitmap
*/
public static OMBitmap read(DataInputStream dis,
LinkProperties propertiesBuffer)
throws IOException {
OMBitmap bitmap = null;
float lat = 0;
float lon = 0;
int x = 0;
int y = 0;
int w = 0;
int h = 0;
int length;
int renderType = dis.readByte();
switch (renderType) {
case RENDERTYPE_OFFSET:
lat = dis.readFloat();
lon = dis.readFloat();
// Fall through...
case RENDERTYPE_XY:
x = dis.readInt();
y = dis.readInt();
break;
case RENDERTYPE_LATLON:
default:
lat = dis.readFloat();
lon = dis.readFloat();
}
w = dis.readInt();
h = dis.readInt();
length = dis.readInt();
byte[] bytes = new byte[length];
dis.readFully(bytes);
switch (renderType) {
case RENDERTYPE_OFFSET:
bitmap = new OMBitmap(lat, lon, x, y, w, h, bytes);
break;
case RENDERTYPE_XY:
bitmap = new OMBitmap(x, y, w, h, bytes);
break;
case RENDERTYPE_LATLON:
default:
bitmap = new OMBitmap(lat, lon, w, h, bytes);
}
if (bitmap != null) {
LinkProperties properties = LinkProperties.loadPropertiesIntoOMGraphic(dis, bitmap, propertiesBuffer);
bitmap.setRotationAngle((double) ProjMath.degToRad(PropUtils.floatFromProperties(properties,
LPC_LINKROTATION,
0.0f)));
}
return bitmap;
}
}