EPS Source code

Chart.java

Applet that start application ChartFrame1

ChartFrame.java

Appication that starts application ChartFrame1

ChartFrame1.java

Opens new window with map, menus, slides, waypoint lists etc. Uses old event model. ChartFrame1.j11.java with new event model not used yet because I want EPS to run on Netscape.

ImageGMap.java

The moving map canvas. Loaded chart rectangles are cached in loadedMaps[][]. On Java 1.1 drawImage() can efficinetly draw the visible part of each chart in the rigth size. On Java 1.0 it is necessary to draw the entire chart (including the non-visible part). When only a small part of a chart is visible on the canvas (Ie. zoom>>100) this is very expensive.

CAux.java

DatumMenu.java

EPSCanvas.java

Abstract class. In the future i might allow multiple canvases at a time.

Elip.java

Ellipsoids. Used by datums.

Datum.java

Datums consist of an elipsoid and XYZ conversion parameters.

DatumMenu.java

Menu that select datum. Used in the "set" menu to set position- and map datum.

Garmincomm.java

Communication with GARMIN GPS unit over serial line. Computes cheksums and create streams. Serial port is initialized with process.

Netscapes PrivilegeManager used to make processes and use serial port on Netscape.

Getgpsinfo.java

Upload data from GPS unit. Runs in new thread.

Sendgpsinfo.java

Download data to GPS unit. Runs in new thread.

Gpsmessage.java

Codes an constants used in GARMIN communication.

NMEA.java

Reads NMEA output. Logs positions and timestamps. Each new position produces a "repaint" that makes ImageGMap draw current position and track on the Chart canvas.

Pone.java

Coordinate (longitude or latitude). Deals with different notations (55.12, 55'12"0 etc).

Pos.java

Position. Initializes datum list. A position is a (Pone) latitued and a (Pone) longitude and a datum. Conversion between datums, comparations of postions, additions of positions/vectors.

Conversion routines use simple cashing (one element altPos) to improve efficience and reduce accumulation of errors due to many conversions between ie. map- and position datum.

WPC.java

Handles set of waypoints. Insertion, deletion, search and parsing.

RouteC.java

Handles set of routes. Insertion, deletion, search and parsing.

TrackC.java

Handles set of track positions. Insertion, deletion, search and parsing.

ICF.java

Prefs.java

Route.java

TRPos.java

WayPoint.java

aWP.java

GMenv.java

GTime.java

Niels Elgaard Larsen