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fix flickering map (no visible tiles for one frame) in case tiles changed but position does not

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This commit is contained in:
Hannes Janetzek 2013-04-29 23:51:59 +02:00
parent 42bd0661c1
commit 0f441fc8f3
1 changed files with 8 additions and 10 deletions
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18
src/org/oscim/layers/tile/TileRenderLayer.java
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@ -60,9 +60,6 @@ public class TileRenderLayer extends RenderLayer {
if (mDrawTiles == null || mDrawTiles.cnt == 0)
return;
if (positionChanged)
mMapView.getMapViewPosition().getMapViewProjection(mBoxCoords);
boolean changed = false;
//boolean positionChanged = false;
@ -76,15 +73,16 @@ public class TileRenderLayer extends RenderLayer {
int tileCnt = mDrawTiles.cnt;
MapTile[] tiles = mDrawTiles.tiles;
if (changed || positionChanged)
updateTileVisibility();
if (changed || positionChanged){
float[] box = mBoxCoords;
mMapView.getMapViewPosition().getMapViewProjection(box);
updateTileVisibility(box);
}
tileCnt += mNumTileHolder;
/* prepare tile for rendering */
int uploadCnt = compileTileLayers(tiles, tileCnt);
//tilesChanged |= (uploadCnt > 0);
compileTileLayers(tiles, tileCnt);
TileRenderer.draw(tiles, tileCnt, pos, m, mFaded);
}
@ -179,7 +177,7 @@ public class TileRenderLayer extends RenderLayer {
private final Object tilelock = new Object();
/** set tile isVisible flag true for tiles that intersect view */
private void updateTileVisibility() {
private void updateTileVisibility(float[] box) {
// lock tiles while updating isVisible state
synchronized (tilelock) {
@ -195,7 +193,7 @@ public class TileRenderLayer extends RenderLayer {
mNumTileHolder = 0;
// check visibile tiles
mScanBox.scan(pos.x, pos.y, pos.scale, tileZoom, mBoxCoords);
mScanBox.scan(pos.x, pos.y, pos.scale, tileZoom, box);
}
}