float MapPropertiesDlg::ScaleElevation(int elevation)
{
float normElevation = float(MAX_ELEVATION-elevation) / MAX_ELEVATION;
MapControllerPtr mapController = m_mapLayer->GetMapController();
return normElevation*mapController->GetMaxElevationGridSpace();
}
void LocationPolygons::InitPolygons()
{
if (m_currentLocationSet.empty())
return;
//Clears existing polygons
m_polygons.clear();
Colour currentColour;
GeoCoord currentCoord;
Point3D mapPoint;
PolygonModelPtr emptyPoly( new PolygonModel() );
m_polygons.push_back( emptyPoly );
int currentPolygonIndex = 0;
//Get elevation to be used
MapControllerPtr mapController = App::Inst().GetLayerTreeController()->GetMapLayer(0)->GetMapController();
if ( m_autoAdjustElevation )
{
m_elevationUsed = mapController->GetMaxElevationGridSpace()
* mapController->GetVerticalExaggeration()
+ 0.005; // Add a minimal amount to avoid clashing
// between colours of polygons and map
}
else
{
m_elevationUsed = m_inputElevation;
}
//Sort location set by colour
std::sort (m_currentLocationSet.begin(),
m_currentLocationSet.end(),
LocationPolygons::SortByColour);
const std::wstring lat ( L"Latitude" );
const std::wstring lon ( L"Longitude" );
//Goes through each location in the given set
for (uint i = 0; i < m_currentLocationSet.size(); i++) {
//If the current location is active
if (m_currentLocationSet[i]->GetLocationController()->GetLocationModel()->IsActive()) {
PolygonModelPtr emptyPoly( new PolygonModel() );
//Sets the current properties of the location
currentColour = m_currentLocationSet[i]->GetLocationController()->GetColour();
currentColour.SetAlpha(m_fillOpacity);
currentCoord.easting =
wxAtof ( m_currentLocationSet[i]->GetLocationController()->GetLocationModel()->GetData(lon).c_str() );
currentCoord.northing =
wxAtof ( m_currentLocationSet[i]->GetLocationController()->GetLocationModel()->GetData(lat).c_str() );
//Converts from lat/long point to a point on the map
App::Inst().GetMapController()->GetMapModel()->LatLongToGrid(currentCoord, mapPoint);
//If there's a new colour, a new polygon is created
if (currentColour != m_polygons[currentPolygonIndex]->polygonColour) {
m_polygons.push_back(emptyPoly);
currentPolygonIndex++;
m_polygons[currentPolygonIndex]->polygonColour = currentColour;
}
//Sets elevation
if (m_increasingElevation)
mapPoint.y = m_elevationUsed + m_elevationOffset*currentPolygonIndex;
else
mapPoint.y = m_elevationUsed;
//If the point is the same point (within EPSILON) then it should not be added to the polygon
//**If the same points are added, then the convex hull algorithm doesn't work**
bool shouldAdd = true;
for (uint j = 0; j < m_polygons[currentPolygonIndex]->originalVertices.size(); j++) {
double deltaX = abs( m_polygons[currentPolygonIndex]->originalVertices[j].x - mapPoint.x );
double deltaY = abs( m_polygons[currentPolygonIndex]->originalVertices[j].z - mapPoint.z );
if (deltaX <= EPSILON && deltaY <= EPSILON)
shouldAdd = false;
}
if (shouldAdd) {
m_polygons[currentPolygonIndex]->originalVertices.push_back(mapPoint);
}
}
}
//Sorts the polygons according to the given algorithm then initializes them
for (uint i = 0; i < m_polygons.size(); i++) {
if (m_sortBy == CONVEX_HULL) {
ConvexHull(m_polygons[i]);
}
m_polygons[i]->InitPolygon(m_polygonInflation, m_smoothPolygons);
}
}
