private void parseInput() {
inputType = TYPE_UNKNOWN;
int fcSrcSize = fcSrc.size();
int fcDestSize = fcDest.size();
// error - # geoms must match
if (fcSrcSize != fcDestSize) {
parseErrMsg = "Control point collections must be same size";
return;
}
// for now only handling pair of geoms to define control points
if (fcSrcSize != 1) {
parseErrMsg = "Control points must be a single geometry";
return;
}
geomSrc[0] = ((Feature) fcSrc.iterator().next()).getGeometry();
geomDest[0] = ((Feature) fcDest.iterator().next()).getGeometry();
if (geomSrc[0].getClass() != geomDest[0].getClass()) {
parseErrMsg = "Control points must be LineStrings";
return;
}
// for now only handling LineStrings
if (!(geomSrc[0] instanceof LineString)) {
parseErrMsg = "Control points must be LineStrings";
return;
}
parseLines();
return;
}
/**
* Find the generic geometry type of the feature collection. Simple method - find the 1st non null
* geometry and its type is the generic type. returns 0 - all empty/invalid <br>
* 1 - point <br>
* 2 - line <br>
* 3 - polygon <br>
*
* @param fc feature collection containing tet geometries.
*/
int findBestGeometryType(FeatureCollection fc) {
Geometry geom;
for (Iterator i = fc.iterator(); i.hasNext(); ) {
geom = ((Feature) i.next()).getGeometry();
if (geom instanceof Point) {
return 1;
}
if (geom instanceof MultiPoint) {
return 1;
}
if (geom instanceof Polygon) {
return 3;
}
if (geom instanceof MultiPolygon) {
return 3;
}
if (geom instanceof LineString) {
return 2;
}
if (geom instanceof MultiLineString) {
return 2;
}
}
return 0;
}
/**
* look at all the data in the column of the featurecollection, and find the largest string!
*
* @param fc features to look at
* @param attributeNumber which of the column to test.
*/
int findMaxStringLength(FeatureCollection fc, int attributeNumber) {
int l;
int maxlen = 0;
Feature f;
for (Iterator i = fc.iterator(); i.hasNext(); ) {
f = (Feature) i.next();
l = f.getString(attributeNumber).length();
if (l > maxlen) {
maxlen = l;
}
}
return maxlen;
}
