diff options
Diffstat (limited to 'altoslib/AltosTelemetry.java')
| -rw-r--r-- | altoslib/AltosTelemetry.java | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/altoslib/AltosTelemetry.java b/altoslib/AltosTelemetry.java index 8182ec6b..a123d752 100644 --- a/altoslib/AltosTelemetry.java +++ b/altoslib/AltosTelemetry.java @@ -15,7 +15,7 @@ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ -package org.altusmetrum.altoslib_4; +package org.altusmetrum.altoslib_5; import java.text.*; @@ -114,6 +114,29 @@ public abstract class AltosTelemetry implements AltosStateUpdate { return telem; } + public static int extend_height(AltosState state, int height_16) { + double compare_height; + int height = height_16; + + if (state.gps != null && state.gps.alt != AltosLib.MISSING) { + compare_height = state.gps_height(); + } else { + compare_height = state.height(); + } + + if (compare_height != AltosLib.MISSING) { + int high_bits = (int) Math.floor (compare_height / 65536.0); + + height = (high_bits << 16) | (height_16 & 0xffff); + + if (Math.abs(height + 65536 - compare_height) < Math.abs(height - compare_height)) + height += 65536; + else if (Math.abs(height - 65536 - compare_height) < Math.abs(height - compare_height)) + height -= 65536; + } + return height; + } + public static AltosTelemetry parse(String line) throws ParseException, AltosCRCException { String[] word = line.split("\\s+"); int i =0; |