public void setCenterLocation(double lat, double lon) {
breakMapThread = true;
useOverlay.tileX = GeoUtils.long2tilex(lon, useOverlay.m_zoom);
useOverlay.tileY = GeoUtils.lat2tiley(lat, useOverlay.m_zoom);
imgOffsetX += scrWidth / 2.0f;
imgOffsetY += scrHeight / 2.0f;
restartMap();
}
public void run() {
int x, y;
Bitmap locTile;
Canvas canvas;
float useLon, useLat, useLonMax, useLatMax;
System.gc();
if ((useOverlay.tileX == 0) && (useOverlay.tileY == 0)) return;
mapThreadRunning = true;
try {
if (locMap == null)
locMap = Bitmap.createBitmap(tileWidth * 256, tileHeight * 256, Bitmap.Config.ARGB_8888);
} catch (OutOfMemoryError oome) {
return;
}
locMap.eraseColor(Color.BLACK);
canvas = new Canvas(locMap);
useLon =
(GeoUtils.tilex2long(useOverlay.tileX, useOverlay.m_zoom)
+ GeoUtils.tilex2long(useOverlay.tileX + 1, useOverlay.m_zoom))
/ 2.0f;
useLat =
(GeoUtils.tiley2lat(useOverlay.tileY, useOverlay.m_zoom)
+ GeoUtils.tiley2lat(useOverlay.tileY + 1, useOverlay.m_zoom))
/ 2.0f;
while (mScaleFactor >= 2.0) {
mScaleFactor /= 2.0f;
useOverlay.m_zoom++;
if (useOverlay.m_zoom > 17) {
useOverlay.m_zoom = 17;
imgOffsetX -= (scrWidth - (scrWidth * 2.0)) / 2.0;
imgOffsetY -= (scrHeight - (scrHeight * 2.0)) / 2.0;
}
}
while (mScaleFactor <= 0.5) {
mScaleFactor *= 2.0f;
useOverlay.m_zoom--;
if (useOverlay.m_zoom < 3) {
useOverlay.m_zoom = 3;
imgOffsetX -= (scrWidth - (scrWidth * 2.0)) / 2.0;
imgOffsetY -= (scrHeight - (scrHeight * 2.0)) / 2.0;
}
}
mScaleFactor = 1.0f;
/* if ((wasScaleOp) && (lonCenter!=0.0f) && (latCenter!=0.0f))
{
tileX=GeoUtils.long2tilex(lonCenter,m_zoom);
tileY=GeoUtils.lat2tiley(latCenter,m_zoom);
tileX-=(scrWidth / 256);
tileY-=(scrWidth / 256);
}
else*/
{
useOverlay.tileX = GeoUtils.long2tilex(useLon, useOverlay.m_zoom);
useOverlay.tileY = GeoUtils.lat2tiley(useLat, useOverlay.m_zoom);
}
useLon = GeoUtils.tilex2long(useOverlay.tileX - 1, useOverlay.m_zoom);
useLat = GeoUtils.tiley2lat(useOverlay.tileY - 1, useOverlay.m_zoom);
useLonMax = GeoUtils.tilex2long(useOverlay.tileX + tileWidth + 1, useOverlay.m_zoom);
useLatMax = GeoUtils.tiley2lat(useOverlay.tileY + tileHeight + 1, useOverlay.m_zoom);
/* if (imgOffsetX>scrWidth)
{
imgOffsetX=scrWidth/2;
}
if (imgOffsetX<=-scrWidth)
{
imgOffsetX=-scrWidth/2;
}
if (imgOffsetY>scrHeight)
{
imgOffsetY=scrHeight/2;
}
if (imgOffsetY<=-scrHeight)
{
imgOffsetY=-scrHeight/2;
}*/
while (imgOffsetX > 0) {
imgOffsetX -= 256.0f;
useOverlay.tileX--;
}
while (imgOffsetX <= -256.0) {
imgOffsetX += 256.0f;
useOverlay.tileX++;
}
while (imgOffsetY > 0) {
imgOffsetY -= 256.0f;
useOverlay.tileY--;
}
while (imgOffsetY <= -256.0) {
imgOffsetY += 256.0f;
useOverlay.tileY++;
}
// calculate lat/lon of screen center point
/* {
int useTileX=tileX,useTileY=tileY;
x=(int)((scrWidth/2.0f)+imgOffsetX);
y=(int)((scrHeight/2.0f)+imgOffsetY);
useTileX+=(x / 256);
x=x % 256;
useTileY+=(y / 256);
y=y % 256;
float tileLon1=GeoUtils.tilex2long(useTileX,m_zoom);
float tileLat1=GeoUtils.tiley2lat(useTileY,m_zoom);
float tileLon2=GeoUtils.tilex2long(useTileX+1,m_zoom);
float tileLat2=GeoUtils.tiley2lat(useTileY+1,m_zoom);
lonCenter=(((tileLon2-tileLon1)/256.0f)*x)+tileLon1;
latCenter=(((tileLat2-tileLat1)/256.0f)*y)+tileLat1;
}*/
matrix.setTranslate(imgOffsetX, imgOffsetY);
breakMapThread = false;
mapThreadRunning = false;
for (x = 0; x < tileWidth; x++)
for (y = 0; y < tileHeight; y++) {
if (breakMapThread) return;
locTile =
geoUtils.loadMapTile(
getContext(),
useOverlay.tileX + x,
useOverlay.tileY + y,
useOverlay.m_zoom,
allowNetAccess);
if (locTile != null) canvas.drawBitmap(locTile, x * 256, y * 256, null);
postInvalidate();
}
useOverlay.doDraw(canvas, useLon, useLonMax, useLat, useLatMax, locMap);
postInvalidate();
System.gc();
}