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fix bbox scale calculation

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This commit is contained in:
Hannes Janetzek 2013-03-13 18:45:48 +01:00
parent 555a951d25
commit edd74160a1
1 changed files with 18 additions and 8 deletions

26
src/org/oscim/view/MapViewPosition.java

@ -674,16 +674,20 @@ public class MapViewPosition {
private final AccelerateDecelerateInterpolator mDecInterpolator = new AccelerateDecelerateInterpolator();
public synchronized void animateTo(BoundingBox bbox) {
double dx = MercatorProjection.longitudeToX(bbox.getMaxLongitude())
- MercatorProjection.longitudeToX(bbox.getMinLongitude());
double dy = MercatorProjection.latitudeToY(bbox.getMinLatitude())
- MercatorProjection.latitudeToY(bbox.getMaxLatitude());
// calculate the minimum scale at which the bbox is completely visible
double dx = Math.abs(MercatorProjection.longitudeToX(bbox.getMaxLongitude())
- MercatorProjection.longitudeToX(bbox.getMinLongitude()));
double dy = Math.abs(MercatorProjection.latitudeToY(bbox.getMinLatitude())
- MercatorProjection.latitudeToY(bbox.getMaxLatitude()));
double aspect = (Math.min(mWidth, mHeight) / Tile.TILE_SIZE);
double z = Math.min(
-LOG4 * Math.log(dx) + (mWidth / Tile.TILE_SIZE),
-LOG4 * Math.log(dy) + (mHeight / Tile.TILE_SIZE));
-LOG4 * Math.log(dx) + aspect,
-LOG4 * Math.log(dy) + aspect);
double newScale = Math.pow(2, z - 1);
double newScale = Math.pow(2, z);
newScale = FastMath.clamp(newScale, MIN_SCALE, 1 << ABS_ZOOMLEVEL);
@ -693,6 +697,7 @@ public class MapViewPosition {
+ " " + FastMath.log2((int) newScale) + " " + scale);
mEndScale = mAbsScale * scale - mAbsScale;
//mEndScale = scale - 1;
mStartScale = mAbsScale;
// reset rotation/tilt
@ -796,6 +801,10 @@ public class MapViewPosition {
if (mAnimScale) {
if (mEndScale > 0)
// double s = (1 + adv * adv * mEndScale);
// mAbsScale = mStartScale * s;
// Log.d(TAG, "scale: " + s + " " + mAbsScale + " " + mStartScale);
//}
mAbsScale = mStartScale + (mEndScale * (Math.pow(2, adv) - 1));
else
mAbsScale = mStartScale + (mEndScale * adv);
@ -827,9 +836,10 @@ public class MapViewPosition {
if (mAnimScale) {
mAbsScale = mStartScale + mEndScale;
updatePosition();
}
updatePosition();
//mMapView.mGLView.setRenderMode(GLSurfaceView.RENDERMODE_WHEN_DIRTY);
mMapView.redrawMap(true);