void Initialize()
{
LayerRetainsBacking = true;
LayerColorFormat = EAGLColorFormat.RGBA8;
ContextRenderingApi = EAGLRenderingAPI.OpenGLES1;
MultipleTouchEnabled = true;
var now = DateTime.UtcNow;
_sunLoc = Location.SunLocation(now);
Camera = new Camera();
CameraMan = new BlimpCameraMan(
new Location(-122.3352, 47.645),
new Location(-122.3352, 47.6453));
Unload += HandleUnload;
}
void DrawTiles(Camera cam, TileName centerTile, float alpha)
{
//
// Determine the number of tiles to show
//
int minX=99999999, minY=99999999, maxX=0, maxY=0;
for (var i = 0; i < cam.ScreenLocations.Length; i++) {
var loc = cam.ScreenLocations[i];
if (loc != null) {
var c = TileName.FromLocation(loc, centerTile.Zoom);
minX = Math.Min(c.X, minX);
minY = Math.Min(c.Y, minY);
maxX = Math.Max(c.X, maxX);
maxY = Math.Max(c.Y, maxY);
}
}
minX = Math.Min(centerTile.X, minX);
minY = Math.Min(centerTile.Y, minY);
maxX = Math.Max(centerTile.X, maxX);
maxY = Math.Max(centerTile.Y, maxY);
minX-=1;
minY-=1;
maxX+=1;
maxY+=1;
//
// Draw them
//
var nd = 0;
var tile = new TileName() { Zoom = centerTile.Zoom };
var n = (int)Math.Pow(2, tile.Zoom);
foreach (var p in RenderOrder) {
tile.X = centerTile.X + p.X;
tile.Y = centerTile.Y + p.Y;
while (tile.X < 0) tile.X += n;
while (tile.Y < 0) tile.Y += n;
while (tile.X >= n) tile.X -= n;
while (tile.Y >= n) tile.Y -= n;
if (tile.X < minX || tile.Y < minY) continue;
if (tile.X > maxX || tile.Y > maxY) continue;
DrawTile(tile, alpha);
nd ++;
}
}
void Initialize()
{
var now = DateTime.Now;
_sunLoc = Caulker.Location.SunLocation(now);
Camera = new Camera();
CameraMan = new BlimpCameraMan(
new Location(153.0306, -27.4778), // Greetings from Brisbane :)
new Location(153.0306, -27.4878));
Unload += HandleUnload;
}
public void Draw(Camera cam, SimTime t)
{
GL.Disable(All.DepthTest);
GL.Enable(All.Texture2D);
_textures.BeginFrame();
_geometries.BeginFrame();
GL.EnableClientState(All.TextureCoordArray);
GL.EnableClientState(All.NormalArray);
var zoom = cam.Zoom;
if (_lastZoom < 0) _lastZoom = zoom;
if (zoom != _lastZoom) {
_prevZoom = _lastZoom;
_lastZoomFadeTime = t.WallTime;
}
var fadeTime = t.WallTime - _lastZoomFadeTime;
var shouldFade = fadeTime.TotalSeconds < FadeSecs;
var fade = shouldFade ? (float)(fadeTime.TotalSeconds/FadeSecs) : 1.0f;
_lastZoom = zoom;
var centerTile1 = TileName.FromLocation(cam.LookAt, _prevZoom);
var centerTile = TileName.FromLocation(cam.LookAt, zoom);
//
// Draw the tiles
//
if (shouldFade) {
DrawTiles(cam, centerTile1, 1.0f);
}
DrawTiles(cam, centerTile, fade);
GL.DisableClientState(All.TextureCoordArray);
GL.DisableClientState(All.NormalArray);
GL.Disable(All.Texture2D);
GL.Enable(All.DepthTest);
}
