private void UpdateSettings(object sender, EventArgs e)
{
SlopeType type = SlopeType.None;
switch (_slopeTypePicker.SelectedSegment)
{
case 0:
type = SlopeType.Degree;
break;
case 1:
type = SlopeType.PercentRise;
break;
case 2:
type = SlopeType.Scaled;
break;
}
HillshadeRenderer renderer = new HillshadeRenderer(
altitude: _altitudeSlider.Value,
azimuth: _azimuthSlider.Value,
zfactor: 1,
slopeType: type,
pixelSizeFactor: 1,
pixelSizePower: 1,
nbits: 8);
_rasterLayer.Renderer = renderer;
}
private void ApplyHillshadeButton_Click(object sender, EventArgs e)
{
// Get the current parameter values
double altitude = AltitudeSlider.Value;
double azimuth = AzimuthSlider.Value;
SlopeType typeOfSlope = _slopeTypeValues[SlopeTypePicker.SelectedItem.ToString()];
// Create a hillshade renderer that uses the values selected by the user
HillshadeRenderer hillshadeRenderer = new HillshadeRenderer(altitude, azimuth, ZFactor, typeOfSlope, PixelSizeFactor, PixelSizePower, PixelBitDepth);
// Apply the new renderer to the raster layer
_rasterLayer.Renderer = hillshadeRenderer;
}
private void ApplyHillshadeButton_Click(object sender, Microsoft.UI.Xaml.RoutedEventArgs e)
{
// Get the current parameter values
double altitude = AltitudeSlider.Value;
double azimuth = AzimuthSlider.Value;
SlopeType typeOfSlope = Enum.Parse <SlopeType>(SlopeTypeCombo.SelectedItem as string);
// Create a hillshade renderer that uses the values selected by the user
HillshadeRenderer hillshadeRenderer = new HillshadeRenderer(altitude, azimuth, ZFactor, typeOfSlope, PixelSizeFactor, PixelSizePower, PixelBitDepth);
// Apply the new renderer to the raster layer
_rasterLayer.Renderer = hillshadeRenderer;
}
private void ApplyHillshadeButton_Click(object sender, EventArgs e)
{
// Get the current azimuth and altitude parameter values
int altitude = 0;
int azimuth = 0;
int.TryParse(_altitudeTextView.Text, out altitude);
int.TryParse(_azimuthTextView.Text, out azimuth);
// Create a hillshade renderer that uses the values selected by the user
HillshadeRenderer hillshadeRenderer = new HillshadeRenderer(altitude, azimuth, ZFactor, _slopeType, PixelSizeFactor, PixelSizePower, PixelBitDepth);
// Apply the new renderer to the raster layer
_rasterLayer.Renderer = hillshadeRenderer;
}
private void ApplyHillshade_Click(object sender, EventArgs e)
{
if (_applyHillshadeRendererUi != null)
{
return;
}
// Create a view to show map item info entry controls over the map view.
CGRect ovBounds = new CGRect(0, 60, View.Bounds.Width, View.Bounds.Height);
_applyHillshadeRendererUi = new ApplyHillshadeRendererDialogOverlay(ovBounds, 0.9f, UIColor.White);
// Handle the OnHillshadeInputsEntered event to get the new renderer defined by the user.
_applyHillshadeRendererUi.OnHillshadeInputsEntered += (s, hillshadeArgs) =>
{
// Get the new hillshade renderer.
HillshadeRenderer newHillshadeRenderer = hillshadeArgs.HillshadeRasterRenderer;
// If it's not null, apply the new renderer to the layer.
if (newHillshadeRenderer != null)
{
_rasterLayer.Renderer = newHillshadeRenderer;
}
// Remove the parameters input UI.
_applyHillshadeRendererUi.Hide();
_applyHillshadeRendererUi = null;
};
// Handle the cancel event when the user closes the dialog without entering hillshade parameters.
_applyHillshadeRendererUi.OnCanceled += (s, args) =>
{
// Remove the parameters input UI.
_applyHillshadeRendererUi.Hide();
_applyHillshadeRendererUi = null;
};
// Add the input UI view (will display semi-transparent over the map view).
View.Add(_applyHillshadeRendererUi);
}
private void InputHillshadeParamsButton_Click(object sender, EventArgs e)
{
// Fire the OnHillshadeInputsEntered event and provide the hillshade renderer.
if (OnHillshadeInputsEntered != null)
{
// Read the inputs provided by the user.
// - Altitude and azimuth.
double altitude = _altitudeSlider.Value;
double azimuth = _azimuthSlider.Value;
// - Get the model from the slope type picker and read the selected type.
nint selected = _slopeTypePicker.SelectedSegment;
SlopeType selectedSlopeType = ((SlopeType[])Enum.GetValues(typeof(SlopeType)))[selected];
// Create a new HillshadeRenderer using the input values and constants.
HillshadeRenderer hillshade = new HillshadeRenderer(altitude, azimuth, ZFactor, selectedSlopeType, PixelSizeFactor, PixelSizePower, PixelBitDepth);
// Create a new HillshadeParametersEventArgs and provide the new renderer.
HillshadeParametersEventArgs inputParamsEventArgs = new HillshadeParametersEventArgs(hillshade);
// Raise the event with the custom arguments.
OnHillshadeInputsEntered(sender, inputParamsEventArgs);
}
}
// Store the hillshade renderer passed into the constructor.
public HillshadeParametersEventArgs(HillshadeRenderer renderer)
{
HillshadeRasterRenderer = renderer;
}