private void OnUpdateRendererClicked(object sender, RoutedEventArgs e)
{
// Define the RasterLayer that will be used to display in the map
RasterLayer rasterLayer_ForDisplayInMap;
// Define the ColorRamp that will be used by the BlendRenderer
ColorRamp myColorRamp;
// Based on ColorRamp type chosen by the user, create a different
// RasterLayer and define the appropriate ColorRamp option
if (ColorRamps.SelectedValue.ToString() == "None")
{
// The user chose not to use a specific ColorRamp, therefore
// need to create a RasterLayer based on general imagery (ie. Shasta.tif)
// for display in the map and use null for the ColorRamp as one of the
// parameters in the BlendRenderer constructor
// Load the raster file using a path on disk
Raster raster_Imagery = new Raster(GetRasterPath_Imagery());
// Create the raster layer from the raster
rasterLayer_ForDisplayInMap = new RasterLayer(raster_Imagery);
// Set up the ColorRamp as being null
myColorRamp = null;
}
else
{
// The user chose a specific ColorRamp (options: are Elevation, DemScreen, DemLight),
// therefore create a RasterLayer based on an imagery with elevation
// (ie. Shasta_Elevation.tif) for display in the map. Also create a ColorRamp
// based on the user choice, translated into an Enumeration, as one of the parameters
// in the BlendRenderer constructor
// Load the raster file using a path on disk
Raster raster_Elevation = new Raster(GetRasterPath_Elevation());
// Create the raster layer from the raster
rasterLayer_ForDisplayInMap = new RasterLayer(raster_Elevation);
// Create a ColorRamp based on the user choice, translated into an Enumeration
PresetColorRampType myPresetColorRampType = (PresetColorRampType)Enum.Parse(typeof(PresetColorRampType), ColorRamps.SelectedValue.ToString());
myColorRamp = ColorRamp.Create(myPresetColorRampType, 256);
}
// Define the parameters used by the BlendRenderer constructor
Raster raster_ForMakingBlendRenderer = new Raster(GetRasterPath_Elevation());
IEnumerable <double> myOutputMinValues = new List <double> {
9
};
IEnumerable <double> myOutputMaxValues = new List <double> {
255
};
IEnumerable <double> mySourceMinValues = new List <double>();
IEnumerable <double> mySourceMaxValues = new List <double>();
IEnumerable <double> myNoDataValues = new List <double>();
IEnumerable <double> myGammas = new List <double>();
SlopeType mySlopeType = (SlopeType)Enum.Parse(typeof(SlopeType), SlopeTypes.SelectedValue.ToString());
BlendRenderer myBlendRenderer = new BlendRenderer(
raster_ForMakingBlendRenderer, // elevationRaster - Raster based on a elevation source
myOutputMinValues, // outputMinValues - Output stretch values, one for each band
myOutputMaxValues, // outputMaxValues - Output stretch values, one for each band
mySourceMinValues, // sourceMinValues - Input stretch values, one for each band
mySourceMaxValues, // sourceMaxValues - Input stretch values, one for each band
myNoDataValues, // noDataValues - NoData values, one for each band
myGammas, // gammas - Gamma adjustment
myColorRamp, // colorRamp - ColorRamp object to use, could be null
Altitude_Slider.Value, // altitude - Altitude angle of the light source
Azimuth_Slider.Value, // azimuth - Azimuth angle of the light source, measured clockwise from north
1, // zfactor - Factor to convert z unit to x,y units, default is 1
mySlopeType, // slopeType - Slope Type
1, // pixelSizeFactor - Pixel size factor, default is 1
1, // pixelSizePower - Pixel size power value, default is 1
8); // outputBitDepth - Output bit depth, default is 8-bi
// Set the RasterLayer.Renderer to be the BlendRenderer
rasterLayer_ForDisplayInMap.Renderer = myBlendRenderer;
// Set the new base map to be the RasterLayer with the BlendRenderer applied
MyMapView.Map.Basemap = new Basemap(rasterLayer_ForDisplayInMap);
}
private async void OnUpdateRendererClicked(object sender, EventArgs e)
{
try
{
// Define the RasterLayer that will be used to display in the map
RasterLayer rasterLayer_ForDisplayInMap;
// Define the ColorRamp that will be used by the BlendRenderer
ColorRamp myColorRamp;
// Get the user choice for the ColorRamps
UITableViewSource myUITableViewSource_ColorRamp = _ColorRamps.Source;
TableSource myTableSource_ColorRamp = (TableSource)myUITableViewSource_ColorRamp;
string myColorRampChoice;
if (myTableSource_ColorRamp.SelectedValue == null)
{
// If the user does not click on a choice in the table but just clicks the
// button, the selected value will be null so use the initial ColorRamp option
myColorRampChoice = "Elevation";
}
else
{
// The user clicked on an option in the table and thus the selected value
// will contain a valid choice
myColorRampChoice = myTableSource_ColorRamp.SelectedValue;
}
// Based on ColorRamp type chosen by the user, create a different
// RasterLayer and define the appropriate ColorRamp option
if (myColorRampChoice == "None")
{
// The user chose not to use a specific ColorRamp, therefore
// need to create a RasterLayer based on general imagery (ie. Shasta.tif)
// for display in the map and use null for the ColorRamp as one of the
// parameters in the BlendRenderer constructor
// Load the raster file using a path on disk
Raster raster_Imagery = new Raster(await GetRasterPath_Imagery());
// Create the raster layer from the raster
rasterLayer_ForDisplayInMap = new RasterLayer(raster_Imagery);
// Set up the ColorRamp as being null
myColorRamp = null;
}
else
{
// The user chose a specific ColorRamp (options: are Elevation, DemScreen, DemLight),
// therefore create a RasterLayer based on an imagery with elevation
// (ie. Shasta_Elevation.tif) for display in the map. Also create a ColorRamp
// based on the user choice, translated into an Enumeration, as one of the parameters
// in the BlendRenderer constructor
// Load the raster file using a path on disk
Raster raster_Elevation = new Raster(await GetRasterPath_Elevation());
// Create the raster layer from the raster
rasterLayer_ForDisplayInMap = new RasterLayer(raster_Elevation);
// Create a ColorRamp based on the user choice, translated into an Enumeration
PresetColorRampType myPresetColorRampType = (PresetColorRampType)Enum.Parse(typeof(PresetColorRampType), myColorRampChoice);
myColorRamp = ColorRamp.Create(myPresetColorRampType, 256);
}
// Define the parameters used by the BlendRenderer constructor
Raster raster_ForMakingBlendRenderer = new Raster(await GetRasterPath_Elevation());
IEnumerable <double> myOutputMinValues = new List <double> {
9
};
IEnumerable <double> myOutputMaxValues = new List <double> {
255
};
IEnumerable <double> mySourceMinValues = new List <double> {
};
IEnumerable <double> mySourceMaxValues = new List <double> {
};
IEnumerable <double> myNoDataValues = new List <double> {
};
IEnumerable <double> myGammas = new List <double> {
};
// Get the user choice for the SlopeType
UITableViewSource myUITableViewSource_SlopeType = _SlopeTypes.Source;
TableSource myTableSource_SlopeType = (TableSource)myUITableViewSource_SlopeType;
string mySlopeTypeChoice;
if (myTableSource_SlopeType.SelectedValue == null)
{
// If the user does not click on a choice in the table but just clicks the
// button, the selected value will be null so use the initial SlopeType option
mySlopeTypeChoice = "Degree";
}
else
{
// The user clicked on an option in the table and thus the selected value
// will contain a valid choice
mySlopeTypeChoice = myTableSource_SlopeType.SelectedValue;
}
SlopeType mySlopeType = (SlopeType)Enum.Parse(typeof(SlopeType), mySlopeTypeChoice);
BlendRenderer myBlendRenderer = new BlendRenderer(
raster_ForMakingBlendRenderer, // elevationRaster - Raster based on a elevation source
myOutputMinValues, // outputMinValues - Output stretch values, one for each band
myOutputMaxValues, // outputMaxValues - Output stretch values, one for each band
mySourceMinValues, // sourceMinValues - Input stretch values, one for each band
mySourceMaxValues, // sourceMaxValues - Input stretch values, one for each band
myNoDataValues, // noDataValues - NoData values, one for each band
myGammas, // gammas - Gamma adjustment
myColorRamp, // colorRamp - ColorRamp object to use, could be null
_Altitude_Slider.Value, // altitude - Altitude angle of the light source
_Azimuth_Slider.Value, // azimuth - Azimuth angle of the light source, measured clockwise from north
1, // zfactor - Factor to convert z unit to x,y units, default is 1
mySlopeType, // slopeType - Slope Type
1, // pixelSizeFactor - Pixel size factor, default is 1
1, // pixelSizePower - Pixel size power value, default is 1
8); // outputBitDepth - Output bit depth, default is 8-bi
// Set the RasterLayer.Renderer to be the BlendRenderer
rasterLayer_ForDisplayInMap.Renderer = myBlendRenderer;
// Set the new base map to be the RasterLayer with the BlendRenderer applied
_myMapView.Map.Basemap = new Basemap(rasterLayer_ForDisplayInMap);
}
catch (Exception ex)
{
Console.WriteLine(ex);
}
}