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/**********************************************************************
* $Id: Depth.cpp,v 1.2 2004/07/02 13:28:26 strk Exp $
*
* GEOS - Geometry Engine Open Source
* http://geos.refractions.net
*
* Copyright (C) 2001-2002 Vivid Solutions Inc.
*
* This is free software; you can redistribute and/or modify it under
* the terms of the GNU Lesser General Public Licence as published
* by the Free Software Foundation.
* See the COPYING file for more information.
*
**********************************************************************
* $Log: Depth.cpp,v $
* Revision 1.2 2004/07/02 13:28:26 strk
* Fixed all #include lines to reflect headers layout change.
* Added client application build tips in README.
*
* Revision 1.1 2004/03/19 09:48:45 ybychkov
* "geomgraph" and "geomgraph/indexl" upgraded to JTS 1.4
*
* Revision 1.10 2003/11/07 01:23:42 pramsey
* Add standard CVS headers licence notices and copyrights to all cpp and h
* files.
*
*
**********************************************************************/
#include <geos/geomgraph.h>
#include <stdio.h>
#define DEPTHNULL -1
namespace geos {
int Depth::depthAtLocation(int location) {
if (location == Location::EXTERIOR) return 0;
if (location == Location::INTERIOR) return 1;
return DEPTHNULL;
}
Depth::Depth() {
// initialize depth array to a sentinel value
for (int i=0; i<2; i++) {
for (int j=0; j<3;j++) {
depth[i][j]=DEPTHNULL;
}
}
}
Depth::~Depth() {
// delete[] &depth;
}
int Depth::getDepth(int geomIndex,int posIndex){
return depth[geomIndex][posIndex];
}
void Depth::setDepth(int geomIndex,int posIndex,int depthValue){
depth[geomIndex][posIndex] = depthValue;
}
int Depth::getLocation(int geomIndex,int posIndex) {
if (depth[geomIndex][posIndex] <= 0) return Location::EXTERIOR;
return Location::INTERIOR;
}
void Depth::add(int geomIndex,int posIndex,int location){
if (location == Location::INTERIOR)
depth[geomIndex][posIndex]++;
}
/**
* A Depth object is null (has never been initialized) if all depths are null.
*/
bool Depth::isNull() {
for (int i=0; i<2; i++) {
for (int j=0; j<3; j++) {
if (depth[i][j] != DEPTHNULL)
return false;
}
}
return true;
}
bool Depth::isNull(int geomIndex) {
return depth[geomIndex][1] == DEPTHNULL;
}
bool Depth::isNull(int geomIndex, int posIndex){
return depth[geomIndex][posIndex] == DEPTHNULL;
}
int Depth::getDelta(int geomIndex) {
return depth[geomIndex][Position::RIGHT]-depth[geomIndex][Position::LEFT];
}
/**
* Normalize the depths for each geometry, if they are non-null.
* A normalized depth
* has depth values in the set { 0, 1 }.
* Normalizing the depths
* involves reducing the depths by the same amount so that at least
* one of them is 0. If the remaining value is > 0, it is set to 1.
*/
void Depth::normalize() {
for (int i=0; i<2; i++) {
if (!isNull(i)) {
int minDepth=depth[i][1];
if (depth[i][2]<minDepth)
minDepth=depth[i][2];
if (minDepth<0) minDepth = 0;
for (int j=1; j<3; j++) {
int newValue=0;
if (depth[i][j]>minDepth)
newValue = 1;
depth[i][j] = newValue;
}
}
}
}
void Depth::add(Label* lbl){
for (int i=0; i<2; i++) {
for (int j=1; j<3; j++) {
int loc=lbl->getLocation(i,j);
if (loc==Location::EXTERIOR || loc==Location::INTERIOR) {
// initialize depth if it is null, otherwise add this location value
if (isNull(i,j)) {
depth[i][j]=depthAtLocation(loc);
} else
depth[i][j]+=depthAtLocation(loc);
}
}
}
}
string Depth::toString() {
string result("");
char buffer[255];
sprintf(buffer,"A: %i,%i B:%i,%i]",depth[0][1],depth[0][2],depth[1][1],depth[1][2]);
result.append(buffer);
result.append("");
return result;
}
}
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