/*
* Copyright 1998-2009 University Corporation for Atmospheric Research/Unidata
*
* Portions of this software were developed by the Unidata Program at the
* University Corporation for Atmospheric Research.
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package ucar.unidata.geoloc.projection;
import ucar.nc2.util.Misc;
import ucar.unidata.geoloc.*;
import junit.framework.*;
/** Test basic projection methods */
public class TestProjectionTiming extends TestCase {
int REPEAT = 100;
int NPTS = 1000;
double TOLERENCE = 1.0e-6;
boolean checkit = true;
/////////////////// testLatLonArea /////////////////
long sumNormal = 0;
long sumArray = 0;
void timeProjection (ProjectionImpl proj) {
java.util.Random r = new java.util.Random((long)this.hashCode());
LatLonPointImpl startL = new LatLonPointImpl();
double[][] from = new double[2][NPTS];
for (int i=0; i<NPTS; i++) {
from[0][i] = (180.0 * (r.nextDouble() - .5)); // random latlon point
from[1][i] = (360.0 * (r.nextDouble() - .5)); // random latlon point
}
int n = REPEAT * NPTS;
//double[][] result = new double[2][NTRIALS];
// normal
long t1 = System.currentTimeMillis();
for (int k=0; k<REPEAT; k++) {
for (int i=0; i<NPTS; i++) {
ProjectionPoint p = proj.latLonToProj( from[0][i], from[1][i]);
LatLonPoint endL = proj.projToLatLon( p);
if (checkit) {
assert Misc.closeEnough(from[0][i], endL.getLatitude()) : "lat: "+from[0][i] + "!="+ endL.getLatitude();
assert closeEnoughLon(from[1][i], endL.getLongitude()) : "lon: "+from[1][i] + "!="+ endL.getLongitude();
}
}
}
long took = System.currentTimeMillis() - t1;
sumNormal += took;
System.out.println(n + " normal "+ proj.getClassName ()+" took "+took+ " msecs "); // == "+ .001*took/NTRIALS+" secs/call ");
// array
long t2 = System.currentTimeMillis();
for (int k=0; k<REPEAT; k++) {
double[][] to = proj.latLonToProj (from);
double[][] result2 = proj.projToLatLon (to);
if (checkit) {
for (int i=0; i<NPTS; i++) {
assert Misc.closeEnough(from[0][i], result2[0][i]) : "lat: "+from[0][i] + "!="+ result2[0][i];
assert closeEnoughLon(from[1][i], result2[1][i]) : "lon: "+from[1][i] + "!="+ result2[1][i];
}
}
}
took = System.currentTimeMillis() - t2;
sumArray += took;
System.out.println(n + " array "+ proj.getClassName ()+" took "+took+ " msecs "); // == "+ .001*took/NTRIALS+" secs/call ");
// System.out.println(NTRIALS + " array "+ proj.getClassName()+" took "+took+ " msecs == "+ .001*took/NTRIALS/REPEAT+" secs/call ");
}
public static boolean closeEnoughLon( double v1, double v2) {
return Misc.closeEnough(LatLonPointImpl.lonNormal(v1), LatLonPointImpl.lonNormal(v2) );
}
public void testEachProjection() {
//timeProjection( new LatLonProjection());
timeProjection( new LambertConformal()); // note: testing default paramters only
timeProjection( new LambertConformal()); // note: testing default paramters only
timeProjection( new LambertConformal()); // note: testing default paramters only
timeProjection( new LambertConformal()); // note: testing default paramters only
System.out.println(" normal took "+sumNormal+ " msecs ");
System.out.println(" array took "+sumArray+ " msecs ");
//testProjection( new TransverseMercator());
//testProjection( new Stereographic());
}
}