///////////////////// THIS IS TO DISPLAY PATH WHEN A* ALGORITHM DETERMINES THE
// PATH/////////////////////////////
public void showPathForEdges(ArrayList<Edge> pathData) {
if (pathData == null || pathData.size() == 0) return;
// HERE WE OBTAIN THE POINTS WHICH TOGETHER REPRESENT THE PATH
pathPointList.clear();
ArrayList<GeoPoint> edgeContourList;
int color = 0;
Edge edge;
for (int i = (pathData.size() - 1); i >= 0; i--) {
edge = pathData.get(i);
color = edge.getEdgeColor();
pathPointList.add(
new PathPoint(
edge.getToNode().getLatE6(),
edge.getToNode().getLongE6(),
color)); // this is the destination node's coords
edgeContourList = edge.getEdgeContourList(mContext.getContentResolver());
if (edgeContourList != null) {
for (GeoPoint p : edgeContourList) {
pathPointList.add(new PathPoint(p.getLatitudeE6(), p.getLongitudeE6(), color));
}
}
if (i == 0) {
// add the data of the first point of the first node
pathPointList.add(
new PathPoint(edge.getFromNode().getLatE6(), edge.getFromNode().getLongE6(), color));
}
}
// HERE WE GET THE PATH INDICATORS LIST
pathIndicatorList.clear();
pathIndicatorOverlays.removeAllItems();
Node n;
int currentType = Edge.TYPE_WALK;
Resources r = mapView.getResources();
int indicatorCount = 0;
int prevEdgeType = -1;
String title = "";
for (int i = 0; i < pathData.size(); i++) {
try {
edge = pathData.get(i);
if (edge.getEdgeType() == Edge.TYPE_WAIT) {
// special case: if the final destination is a bus/tram stop
// we add a final indicator for destination node
if (i == (pathData.size() - 1)) { // last edge. must display destination
n = edge.getToNode();
indicatorCount++;
OverlayItem item =
new OverlayItem(
indicatorCount + ":path_indicator" + n.getID(),
null,
"Reach destination at " + n.getTitle(),
n.getGeoPoint(),
DrawableUtils.numberedPathDirectionDrawable(r, indicatorCount));
item.setMarkerHotspot(HotspotPlace.BOTTOM_CENTER);
pathIndicatorOverlays.addItem(item);
break;
}
if (edge.getCostForEdge() > 0) title = edge.getFromNode().getTitle();
continue;
}
if (i == 0) { // first edge. must display start point
currentType = edge.getEdgeType();
n = edge.getFromNode();
if (n.getTitle() != null) title = n.getTitle();
indicatorCount++;
String descText = edge.getLineName();
if (edge.getEdgeType() == Edge.TYPE_WALK) {
if (edge.getCostForEdge() == Edge.DUMMY_EDGE_COST)
descText = "Walk from your starting location";
else descText = descText.replace("Alight", "Start").replace("#NODE_NAME#", title);
} else {
descText =
descText
.replace("Board", "Start at " + title + " and board")
.replace("#NODE_NAME#", "");
}
OverlayItem item =
new OverlayItem(
indicatorCount + ":path_indicator" + n.getID(),
null,
descText,
n.getGeoPoint(),
DrawableUtils.numberedPathDirectionDrawable(r, indicatorCount));
item.setMarkerHotspot(HotspotPlace.BOTTOM_CENTER);
pathIndicatorOverlays.addItem(item);
} else {
if (edge.getEdgeType() != currentType) {
// if there is a change in the type of edge
currentType = edge.getEdgeType();
n = edge.getFromNode();
if (n.getTitle() != null) title = n.getTitle();
indicatorCount++;
String descText = edge.getLineName();
if (prevEdgeType != Edge.TYPE_WALK && edge.getEdgeType() != Edge.TYPE_WALK)
descText = descText.replace("Board", "Alight and change to");
descText = descText.replace("#NODE_NAME#", title);
OverlayItem item =
new OverlayItem(
indicatorCount + ":path_indicator" + n.getID(),
null,
descText,
n.getGeoPoint(),
DrawableUtils.numberedPathDirectionDrawable(r, indicatorCount));
item.setMarkerHotspot(HotspotPlace.BOTTOM_CENTER);
pathIndicatorOverlays.addItem(item);
}
}
// add a final indicator for destination node
if (i == (pathData.size() - 1)) { // last edge. must display destination
n = edge.getToNode();
indicatorCount++;
OverlayItem item =
new OverlayItem(
indicatorCount + ":path_indicator" + n.getID(),
null,
"Reach destination at " + n.getTitle(),
n.getGeoPoint(),
DrawableUtils.numberedPathDirectionDrawable(r, indicatorCount));
item.setMarkerHotspot(HotspotPlace.BOTTOM_CENTER);
pathIndicatorOverlays.addItem(item);
}
prevEdgeType = edge.getEdgeType();
} catch (Exception ignore) {
ignore.printStackTrace();
}
}
pathOverlay.setPoints(pathPointList);
mapView.postInvalidate();
}
