int alert_is_on_route (roadmap_alerter_location_info *pInfo, int steering, roadmap_alert_provider* provider, int i ) {
int rc = 0;
int from;
int to;
RoadMapPosition from_position;
RoadMapPosition to_position;
int road_azymuth;
int delta;
BOOL is_alert_on_route = ((provider->is_on_route) && ((* (provider->is_on_route))((* (provider->get_id))(i))));
if (is_alert_on_route)
return TRUE;
roadmap_square_set_current (pInfo->square_id);
roadmap_line_points (pInfo->line_id, &from, &to);
roadmap_point_position (from, &from_position);
roadmap_point_position (to, &to_position);
road_azymuth = roadmap_math_azymuth (&from_position, &to_position);
delta = azymuth_delta (steering, road_azymuth);
if (delta >= -90 && delta < 90)
rc = navigate_is_line_on_route (pInfo->square_id, pInfo->line_id, from, to);
else
rc = navigate_is_line_on_route (pInfo->square_id, pInfo->line_id, to, from);
return rc;
}
static int alert_is_on_route (const RoadMapPosition *point_position, int steering) {
int count = 0;
int layers[128];
int layers_count;
RoadMapNeighbour neighbours;
int rc = 0;
int from;
int to;
RoadMapPosition from_position;
RoadMapPosition to_position;
int road_azymuth;
int delta;
int square_current = roadmap_square_active ();
layers_count = roadmap_layer_all_roads (layers, 128);
if (layers_count > 0) {
count = roadmap_street_get_closest
(point_position, 0, layers, layers_count, &neighbours, 1);
if (count > 0) {
roadmap_square_set_current (neighbours.line.square);
roadmap_line_points (neighbours.line.line_id, &from, &to);
roadmap_point_position (from, &from_position);
roadmap_point_position (to, &to_position);
road_azymuth = roadmap_math_azymuth (&from_position, &to_position);
delta = azymuth_delta (steering, road_azymuth);
if (delta >= -90 && delta < 90)
rc = navigate_is_line_on_route (neighbours.line.square, neighbours.line.line_id, from, to);
else
rc = navigate_is_line_on_route (neighbours.line.square, neighbours.line.line_id, to, from);
}
}
roadmap_square_set_current (square_current);
return rc;
}
