Allow hill cost and hill cutoff in way context

This removes the limitation that `downhillcutoff` and `uphillcutoff` as well as `downhillcost` and `uphillcost` cannot be used in the way context.

brouter-core/src/main/java/btools/router/KinematicPath.java

@@ -248,12 +248,12 @@ final class KinematicPath extends OsmPath {
 
 
   @Override
-  public int elevationCorrection(RoutingContext rc) {
+  public int elevationCorrection() {
     return 0;
   }
 
   @Override
-  public boolean definitlyWorseThan(OsmPath path, RoutingContext rc) {
+  public boolean definitlyWorseThan(OsmPath path) {
     KinematicPath p = (KinematicPath) path;
 
     int c = p.cost;

brouter-core/src/main/java/btools/router/OsmPath.java

@@ -409,9 +409,9 @@ abstract class OsmPath implements OsmLinkHolder {
   protected void computeKinematic(RoutingContext rc, double dist, double delta_h, boolean detailMode) {
   }
 
-  public abstract int elevationCorrection(RoutingContext rc);
+  public abstract int elevationCorrection();
 
-  public abstract boolean definitlyWorseThan(OsmPath p, RoutingContext rc);
+  public abstract boolean definitlyWorseThan(OsmPath p);
 
   public OsmNode getSourceNode() {
     return sourceNode;

brouter-core/src/main/java/btools/router/RoutingContext.java

@@ -52,10 +52,6 @@ public final class RoutingContext {
 
   public int memoryclass = 64;
 
-  public int downhillcostdiv;
-  public int downhillcutoff;
-  public int uphillcostdiv;
-  public int uphillcutoff;
   public boolean carMode;
   public boolean bikeMode;
   public boolean footMode;
@@ -123,12 +119,6 @@ public final class RoutingContext {
 
     setModel(expctxGlobal._modelClass);
 
-    downhillcostdiv = (int) expctxGlobal.getVariableValue("downhillcost", 0.f);
-    downhillcutoff = (int) (expctxGlobal.getVariableValue("downhillcutoff", 0.f) * 10000);
-    uphillcostdiv = (int) expctxGlobal.getVariableValue("uphillcost", 0.f);
-    uphillcutoff = (int) (expctxGlobal.getVariableValue("uphillcutoff", 0.f) * 10000);
-    if (downhillcostdiv != 0) downhillcostdiv = 1000000 / downhillcostdiv;
-    if (uphillcostdiv != 0) uphillcostdiv = 1000000 / uphillcostdiv;
     carMode = 0.f != expctxGlobal.getVariableValue("validForCars", 0.f);
     bikeMode = 0.f != expctxGlobal.getVariableValue("validForBikes", 0.f);
     footMode = 0.f != expctxGlobal.getVariableValue("validForFoot", 0.f);

brouter-core/src/main/java/btools/router/RoutingEngine.java

@@ -977,7 +977,7 @@ public class RoutingEngine extends Thread {
               if (parentcost < firstMatchCost) firstMatchCost = parentcost;
 
               int costEstimate = path.cost
-                + path.elevationCorrection(routingContext)
+                + path.elevationCorrection()
                 + (costCuttingTrack.cost - pe.cost);
               if (costEstimate <= maxTotalCost) {
                 matchPath = OsmPathElement.create(path, routingContext.countTraffic);
@@ -1110,7 +1110,7 @@ public class RoutingEngine extends Thread {
               OsmLinkHolder dominator = link.getFirstLinkHolder(currentNode);
               while (!trafficSim && dominator != null) {
                 OsmPath dp = (OsmPath) dominator;
-                if (dp.airdistance != -1 && bestPath.definitlyWorseThan(dp, routingContext)) {
+                if (dp.airdistance != -1 && bestPath.definitlyWorseThan(dp)) {
                   break;
                 }
                 dominator = dominator.getNextForLink();

brouter-core/src/main/java/btools/router/StdPath.java

@@ -18,6 +18,9 @@ final class StdPath extends OsmPath {
   private float totalEnergy; // total route energy (Joule)
   private float elevation_buffer; // just another elevation buffer (for travel time)
 
+  private int uphillcostdiv;
+  private int downhillcostdiv;
+
   // Gravitational constant, g
   private static final double GRAVITY = 9.81;  // in meters per second^(-2)
 
@@ -37,6 +40,8 @@ final class StdPath extends OsmPath {
     ehbu = 0;
     totalTime = 0.f;
     totalEnergy = 0.f;
+    uphillcostdiv = 0;
+    downhillcostdiv = 0;
     elevation_buffer = 0.f;
   }
 
@@ -44,12 +49,24 @@ final class StdPath extends OsmPath {
   protected double processWaySection(RoutingContext rc, double distance, double delta_h, double elevation, double angle, double cosangle, boolean isStartpoint, int nsection, int lastpriorityclassifier) {
     // calculate the costfactor inputs
     float turncostbase = rc.expctxWay.getTurncost();
+    float uphillcutoff = rc.expctxWay.getUphillcutoff() * 10000;
+    float downhillcutoff = rc.expctxWay.getDownhillcutoff() * 10000;
     float cfup = rc.expctxWay.getUphillCostfactor();
     float cfdown = rc.expctxWay.getDownhillCostfactor();
     float cf = rc.expctxWay.getCostfactor();
     cfup = cfup == 0.f ? cf : cfup;
     cfdown = cfdown == 0.f ? cf : cfdown;
 
+    downhillcostdiv = (int) rc.expctxWay.getDownhillcost();
+    if (downhillcostdiv > 0) {
+      downhillcostdiv = 1000000 / downhillcostdiv;
+    }
+
+    uphillcostdiv = (int) rc.expctxWay.getUphillcost();
+    if (uphillcostdiv > 0) {
+      uphillcostdiv = 1000000 / uphillcostdiv;
+    }
+
     int dist = (int) distance; // legacy arithmetics needs int
 
     // penalty for turning angle
@@ -66,8 +83,8 @@ final class StdPath extends OsmPath {
     // leads to an immediate penalty
 
     int delta_h_micros = (int) (1000000. * delta_h);
-    ehbd += -delta_h_micros - dist * rc.downhillcutoff;
+    ehbd += -delta_h_micros - dist * downhillcutoff;
-    ehbu += delta_h_micros - dist * rc.uphillcutoff;
+    ehbu += delta_h_micros - dist * uphillcutoff;
 
     float downweight = 0.f;
     if (ehbd > rc.elevationpenaltybuffer) {
@@ -84,8 +101,8 @@ final class StdPath extends OsmPath {
         reduce = excess;
       }
       ehbd -= reduce;
-      if (rc.downhillcostdiv > 0) {
+      if (downhillcostdiv > 0) {
-        int elevationCost = reduce / rc.downhillcostdiv;
+        int elevationCost = reduce / downhillcostdiv;
         sectionCost += elevationCost;
         if (message != null) {
           message.linkelevationcost += elevationCost;
@@ -110,8 +127,8 @@ final class StdPath extends OsmPath {
         reduce = excess;
       }
       ehbu -= reduce;
-      if (rc.uphillcostdiv > 0) {
+      if (uphillcostdiv > 0) {
-        int elevationCost = reduce / rc.uphillcostdiv;
+        int elevationCost = reduce / uphillcostdiv;
         sectionCost += elevationCost;
         if (message != null) {
           message.linkelevationcost += elevationCost;
@@ -153,23 +170,23 @@ final class StdPath extends OsmPath {
   }
 
   @Override
-  public int elevationCorrection(RoutingContext rc) {
+  public int elevationCorrection() {
-    return (rc.downhillcostdiv > 0 ? ehbd / rc.downhillcostdiv : 0)
+    return (downhillcostdiv > 0 ? ehbd / downhillcostdiv : 0)
-      + (rc.uphillcostdiv > 0 ? ehbu / rc.uphillcostdiv : 0);
+      + (uphillcostdiv > 0 ? ehbu / uphillcostdiv : 0);
   }
 
   @Override
-  public boolean definitlyWorseThan(OsmPath path, RoutingContext rc) {
+  public boolean definitlyWorseThan(OsmPath path) {
     StdPath p = (StdPath) path;
 
     int c = p.cost;
-    if (rc.downhillcostdiv > 0) {
+    if (p.downhillcostdiv > 0) {
-      int delta = p.ehbd - ehbd;
+      int delta = p.ehbd / p.downhillcostdiv - (downhillcostdiv > 0 ? ehbd / downhillcostdiv : 0);
-      if (delta > 0) c += delta / rc.downhillcostdiv;
+      if (delta > 0) c += delta;
     }
-    if (rc.uphillcostdiv > 0) {
+    if (p.uphillcostdiv > 0) {
-      int delta = p.ehbu - ehbu;
+      int delta = p.ehbu / p.uphillcostdiv - (uphillcostdiv > 0 ? ehbu / uphillcostdiv : 0);
-      if (delta > 0) c += delta / rc.uphillcostdiv;
+      if (delta > 0) c += delta;
     }
 
     return cost > c;

brouter-expressions/src/main/java/btools/expressions/BExpressionContextWay.java

@@ -12,7 +12,7 @@ public final class BExpressionContextWay extends BExpressionContext implements T
   private boolean decodeForbidden = true;
 
   private static String[] buildInVariables =
-    {"costfactor", "turncost", "uphillcostfactor", "downhillcostfactor", "initialcost", "nodeaccessgranted", "initialclassifier", "trafficsourcedensity", "istrafficbackbone", "priorityclassifier", "classifiermask", "maxspeed"};
+    {"costfactor", "turncost", "uphillcostfactor", "downhillcostfactor", "initialcost", "nodeaccessgranted", "initialclassifier", "trafficsourcedensity", "istrafficbackbone", "priorityclassifier", "classifiermask", "maxspeed", "uphillcost", "downhillcost", "uphillcutoff", "downhillcutoff"};
 
   protected String[] getBuildInVariableNames() {
     return buildInVariables;
@@ -66,6 +66,22 @@ public final class BExpressionContextWay extends BExpressionContext implements T
     return getBuildInVariable(11);
   }
 
+  public float getUphillcost() {
+    return getBuildInVariable(12);
+  }
+
+  public float getDownhillcost() {
+    return getBuildInVariable(13);
+  }
+
+  public float getUphillcutoff() {
+    return getBuildInVariable(14);
+  }
+
+  public float getDownhillcutoff() {
+    return getBuildInVariable(15);
+  }
+
   public BExpressionContextWay(BExpressionMetaData meta) {
     super("way", meta);
   }