/// <summary>
/// Convert Spherical Mercator Coordinates of scene BBox to Unity Coordinates
/// </summary>
/// <param name="bbox"> bbox obtained from OSM file </param>
/// <returns></returns>
private BBox editbbox(BBox bbox)
{
Geography proj = new Geography();
Vector2 bottomleft = proj.LatLontoMeters(bbox.bottom, bbox.left);
Vector2 topright = proj.LatLontoMeters(bbox.top, bbox.right);
bbox.meterLeft = bottomleft.y;
bbox.meterBottom = bottomleft.x;
bbox.meterTop = topright.x;
bbox.meterRight = topright.y;
return(bbox);
}
/// <summary>
/// Converts Spherical Mercator Coordinates of all nodes to Unity Coordinates
/// </summary>
private void assignNodePositions()
{
Geography proj = new Geography();
for (int k = 0; k < osmxml.nodeList.Count; k++)
{
Node nd = osmxml.nodeList[k];
Vector2 meterCoord = proj.LatLontoMeters(nd.lat, nd.lon);
Vector2 shift = new Vector2(scenebbox.meterBottom, scenebbox.meterLeft);
meterCoord = meterCoord - shift;
float height = terrain.getTerrainHeight(nd.lat, nd.lon);
nd.meterPosition = new Vector3(meterCoord.y, height, meterCoord.x);
osmxml.nodeList[k] = nd;
}
for (int i = 0; i < osmxml.wayList.Count; i++)
{
for (int k = 0; k < osmxml.wayList[i].nodes.Count; k++)
{
Node nd = osmxml.wayList[i].nodes[k];
Vector2 meterCoord = proj.LatLontoMeters(nd.lat, nd.lon);
Vector2 shift = new Vector2(scenebbox.meterBottom, scenebbox.meterLeft);
meterCoord = meterCoord - shift;
float height = terrain.getTerrainHeight(nd.lat, nd.lon);
nd.meterPosition = new Vector3(meterCoord.y, height, meterCoord.x);
osmxml.wayList[i].nodes[k] = nd;
}
}
for (int i = 0; i < osmxml.defaultobject3DList.Count; i++)
{
Node nd = osmxml.defaultobject3DList[i];
Vector2 meterCoord = proj.LatLontoMeters(nd.lat, nd.lon);
Vector2 shift = new Vector2(scenebbox.meterBottom, scenebbox.meterLeft);
meterCoord = meterCoord - shift;
float height = terrain.getTerrainHeight(nd.lat, nd.lon);
nd.meterPosition = new Vector3(meterCoord.y, height, meterCoord.x);
osmxml.defaultobject3DList[i] = nd;
}
}
public myTerrain(HeightmapLoader _heightmap, BBox _bbox, string _OSMfileName, MapProvider _provider)
{
OSMfileName = _OSMfileName;
heightmap = _heightmap;
scenebbox = _bbox;
textureType = _provider;
terrainObject = new GameObject("Terrain");
gridList = new List <GameObject>();
int leftIndex = (int)Math.Floor((scenebbox.left - (float)Math.Floor(scenebbox.left)) * 1200.0f);
int rightIndex = (int)Math.Ceiling((scenebbox.right - (float)Math.Floor(scenebbox.right)) * 1200.0f);
if ((rightIndex - leftIndex) % 2 != 0)
{
rightIndex++;
}
int topIndex, bottomIndex;
topIndex = (int)Math.Floor(((float)Math.Ceiling(scenebbox.top) - scenebbox.top) * 1200.0f);
bottomIndex = (int)Math.Ceiling(((float)Math.Ceiling(scenebbox.bottom) - scenebbox.bottom) * 1200.0f);
if ((bottomIndex - topIndex) % 2 != 0)
{
topIndex -= 1;
}
Debug.Log("<color=yellow>TERRAIN:</color>" + "left:" + leftIndex + " right:" + rightIndex
+ " bottom:" + bottomIndex + " top:" + topIndex);
float[,] myTerrainHeights = new float[1 + bottomIndex - topIndex, 1 + rightIndex - leftIndex];
Vector2[,] meterPositions = new Vector2[1 + bottomIndex - topIndex, 1 + rightIndex - leftIndex];
Geography geo = new Geography();
float left = (float)Math.Floor(scenebbox.left) + (leftIndex / 1200.0f);
float right = (float)Math.Floor(scenebbox.left) + (rightIndex / 1200.0f);
float top = (float)Math.Ceiling(scenebbox.top) - (topIndex / 1200.0f);
float bottom = (float)Math.Ceiling(scenebbox.top) - (bottomIndex / 1200.0f);
for (int i = 0; i <= bottomIndex - topIndex; i++)
{
for (int j = 0; j <= rightIndex - leftIndex; j++)
{
myTerrainHeights[i, j] = heightmap.heightmap[topIndex + i, leftIndex + j];
meterPositions[i, j] = geo.LatLontoMeters(top - (i / 1200.0f), left + (j / 1200.0f));
}
}
terrainInfo.leftIndex = leftIndex;
terrainInfo.rightIndex = rightIndex;
terrainInfo.bottomIndex = bottomIndex;
terrainInfo.topIndex = topIndex;
terrainInfo.terrainHeights = myTerrainHeights;
terrainInfo.meterPositions = meterPositions;
terrainInfo.ColumnCount = 1 + rightIndex - leftIndex;
terrainInfo.RowCount = 1 + bottomIndex - topIndex;
terrainInfo.terrainBBox = new BBox();
terrainInfo.terrainBBox.left = left;
terrainInfo.terrainBBox.top = top;
terrainInfo.terrainBBox.bottom = bottom;
terrainInfo.terrainBBox.right = right;
Vector2 bottmleft = geo.LatLontoMeters(bottom, left);
Vector2 topright = geo.LatLontoMeters(top, right);
terrainInfo.terrainBBox.meterBottom = bottmleft.x;
terrainInfo.terrainBBox.meterLeft = bottmleft.y;
terrainInfo.terrainBBox.meterTop = topright.x;
terrainInfo.terrainBBox.meterRight = topright.y;
terrainInfo.shiftX = scenebbox.meterLeft;
terrainInfo.shiftZ = scenebbox.meterBottom;
Debug.Log("<color=yellow>TERRAIN:</color> ColumnCount:" + terrainInfo.ColumnCount + " RowCount:" + terrainInfo.RowCount);
// drawBoundsforDebug();
for (int i = 0; i < terrainInfo.RowCount - 1; i += 2)
{
for (int j = 0; j < terrainInfo.ColumnCount - 1; j += 2)
{
createGrid(i, j);
}
}
drawUnderPlates();
}
