?? planet.java
字號:
// **********************************************************************// // <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/proj/Planet.java,v $// $RCSfile: Planet.java,v $// $Revision: 1.4.2.1 $// $Date: 2004/10/14 18:27:37 $// $Author: dietrick $// // **********************************************************************package com.bbn.openmap.proj;import com.bbn.openmap.MoreMath;/** * Planet datums and parameters. These values are taken from John * Snyder's <i>Map Projections --A Working Manual </i> You should add * datums as needed, consult the ellips.dat file. */public class Planet { // Solar system id's. Add new ones as needed. final public static transient int Earth = 3; final public static transient int Mars = 4; // WGS84 / GRS80 datums final public static transient float wgs84_earthPolarRadiusMeters = 6356752.3142f; final public static transient double wgs84_earthPolarRadiusMeters_D = 6356752.3142; final public static transient float wgs84_earthEquatorialRadiusMeters = 6378137.0f; final public static transient double wgs84_earthEquatorialRadiusMeters_D = 6378137.0; final public static transient float wgs84_earthFlat = 1 - (wgs84_earthPolarRadiusMeters / wgs84_earthEquatorialRadiusMeters);// 1 - // (minor/major) // = // 1/298.257 final public static transient float wgs84_earthEccen = (float) Math.sqrt(2 * wgs84_earthFlat - (wgs84_earthFlat * wgs84_earthFlat));// sqrt(2*f // - // f^2) // = // 0.081819221f final public static transient float wgs84_earthEquatorialCircumferenceMeters = MoreMath.TWO_PI * wgs84_earthEquatorialRadiusMeters; final public static transient float wgs84_earthEquatorialCircumferenceKM = wgs84_earthEquatorialCircumferenceMeters / 1000f; final public static transient float wgs84_earthEquatorialCircumferenceMiles = wgs84_earthEquatorialCircumferenceKM * 0.62137119f;//HACK // use // UNIX // units? final public static transient float wgs84_earthEquatorialCircumferenceNMiles = 21600.0f; // 60.0f // * // 360.0f; // // // sixty // nm // per // degree final public static transient double wgs84_earthEquatorialCircumferenceMeters_D = MoreMath.TWO_PI_D * wgs84_earthEquatorialRadiusMeters_D; final public static transient double wgs84_earthEquatorialCircumferenceKM_D = wgs84_earthEquatorialCircumferenceMeters_D / 1000; final public static transient double wgs84_earthEquatorialCircumferenceMiles_D = wgs84_earthEquatorialCircumferenceKM_D * 0.62137119;//HACK // use // UNIX // units? final public static transient double wgs84_earthEquatorialCircumferenceNMiles_D = 21600.0; // 60.0f // * // 360.0f; // // // sixty // nm // per // degree // wgs84_earthEquatorialCircumferenceKM*0.5389892f; // calculated, // same as line above. // wgs84_earthEquatorialCircumferenceKM*0.5399568f;//HACK use UNIX // units? << This was wrong. // Mars final public static transient float marsEquatorialRadius = 3393400.0f;// meters final public static transient float marsEccen = 0.101929f;// eccentricity // e final public static transient float marsFlat = 0.005208324f;// 1-(1-e^2)^1/2 // International 1974 final public static transient float international1974_earthPolarRadiusMeters = 6356911.946f; final public static transient float international1974_earthEquatorialRadiusMeters = 6378388f; final public static transient float international1974_earthFlat = 1 - (international1974_earthPolarRadiusMeters / international1974_earthEquatorialRadiusMeters);// 1 - // (minor/major) // = // 1/297 // Extra scale constant for better viewing of maps (do not use // this to // calculate anything but points to be viewed!) public transient static int defaultPixelsPerMeter = 3272;// 3384: // mattserver/Map.C, // 3488: // dcw // cannot construct private Planet() {}}?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -