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add MapPosition.setByBoundingBox()

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This commit is contained in:
Hannes Janetzek 2014-01-28 17:45:35 +01:00
parent d52d761a5c
commit 2ac7cfc7b9
1 changed files with 16 additions and 0 deletions
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16
vtm/src/org/oscim/core/MapPosition.java
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@ -102,6 +102,22 @@ public class MapPosition {
return MercatorProjection.toLongitude(x); return MercatorProjection.toLongitude(x);
} }
public void setByBoundingBox(BoundingBox bbox, int viewWidth, int viewHeight) {
double minx = MercatorProjection.longitudeToX(bbox.getMinLongitude());
double miny = MercatorProjection.latitudeToY(bbox.getMaxLatitude());
double dx = Math.abs(MercatorProjection.longitudeToX(bbox.getMaxLongitude()) - minx);
double dy = Math.abs(MercatorProjection.latitudeToY(bbox.getMinLatitude()) - miny);
double zx = viewWidth / (dx * Tile.SIZE);
double zy = viewHeight / (dy * Tile.SIZE);
scale = Math.min(zx, zy);
x = minx + dx / 2;
y = miny + dy / 2;
angle = 0;
tilt = 0;
}
@Override @Override
public String toString() { public String toString() {
StringBuilder builder = new StringBuilder(); StringBuilder builder = new StringBuilder();