public void ZoomToBox(Geometries.Point beginPoint, Geometries.Point endPoint)
{
var width = Math.Abs(endPoint.X - beginPoint.X);
var height = Math.Abs(endPoint.Y - beginPoint.Y);
if (width <= 0)
{
return;
}
if (height <= 0)
{
return;
}
ZoomHelper.ZoomToBoudingbox(
beginPoint.X, beginPoint.Y, endPoint.X, endPoint.Y,
Map.Viewport.Width, Map.Viewport.Height,
out var x, out var y, out var resolution);
resolution = ViewportLimiter.LimitResolution(resolution, _map.Viewport.Width, _map.Viewport.Height, _map.ZoomMode, _map.ZoomLimits,
_map.Resolutions, _map.Envelope);
_map.Viewport.Resolution = resolution;
_map.Viewport.Center = new Geometries.Point(x, y);
_map.RefreshData(true);
RefreshGraphics();
ClearBBoxDrawing();
}
private double DetermineNewResolution(int mouseWheelDelta, double currentResolution)
{
if (mouseWheelDelta > 0)
{
var resolution = ZoomHelper.ZoomIn(_map.Resolutions, currentResolution);
return(ViewportLimiter.LimitResolution(resolution, Viewport.Width, Viewport.Height,
_map.Limits.ZoomMode, _map.Limits.ZoomLimits, _map.Resolutions, _map.Envelope));
}
if (mouseWheelDelta < 0)
{
var resolution = ZoomHelper.ZoomOut(_map.Resolutions, currentResolution);
return(ViewportLimiter.LimitResolution(resolution, Viewport.Width, Viewport.Height,
_map.Limits.ZoomMode, _map.Limits.ZoomLimits, _map.Resolutions, _map.Envelope));
}
return(currentResolution);
}