calculateBoundingBox method
Calculates the bounding box of the given dimensions of the view. Scaling or focalPoint are NOT considered.
Implementation
BoundingBox calculateBoundingBox(Dimension mapDimension) {
if (boundingBox != null && _lastMapDimension == mapDimension)
return boundingBox!;
Mappoint center = getCenter();
double leftX = center.x - mapDimension.width / 2;
double rightX = center.x + mapDimension.width / 2;
double topY = center.y - mapDimension.height / 2;
double bottomY = center.y + mapDimension.height / 2;
boundingBox = BoundingBox(
_projection
.pixelYToLatitude(min(bottomY, _projection.mapsize.toDouble())),
_projection.pixelXToLongitude(max(leftX, 0)),
_projection.pixelYToLatitude(max(topY, 0)),
_projection
.pixelXToLongitude(min(rightX, _projection.mapsize.toDouble())));
_leftUpper = Mappoint(leftX, topY);
_lastMapDimension = mapDimension;
return boundingBox!;
}