<!– Class –> This class represents general image types to be drawn on the map, such as .BMP, .JPG, .PNG, etc.

This type of layer is used to draw standard image types on the map. These include .BMP, .JPG, .PNG, .TIFF, and all other image types that are supported by the .NET Framework to be loaded as a Bitmap.

Each of these images will need a world file associated with it. The world file contains the geospatial information pertaining to the image. Using the world file, we know its spatial position and other required information to draw it on the map relative to other images or spatial features. World files are small text files with an extension that matches the original image's extension, but with the middle character of the extension changed to a “w”. If you have images that you want to use but do not have their world files, please contact the source of the image so that they can provide one for you. world files are fairly common in the GIS community.

*System.Object ThinkGeo.MapSuite.PortableCore.Layer *ThinkGeo.MapSuite.PortableCore.RasterLayer ThinkGeo.MapSuite.PortableCore.GdiPlusRasterLayer

This is a constructor for the class.

This is the default constructor. If you use this constructor, then you need to set the PathFileName property manually before using the layer.

If you use this constructor, then you need to set the PathFileName property manually before using the layer.

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This is a constructor for the class.

This constructor allows you to provide the path and filename information for the GDI+ image file.

This constructor gets the layer ready to use.

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This is a constructor for the class.

This constructor allows you to provide the path and filename information for both the GDI+ image file and its world file.

This constructor gets the layer ready to use.

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This is a constructor for the class.

This constructor allows you to provide the path and filename for the GDI+ image file and the image extent to use.

This constructor gets the layer ready to use.

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Create a copy of Layer using the deep clone process.

The difference between deep clone and shallow clone is as follows: In shallow cloning, only the object is copied; the objects within it are not. By contrast, deep cloning copies the cloned object as well as all the objects within.

<!– ThinkGeo.MapSuite.PortableCore.Layer –> Go Back

This method closes the Layer and releases any resources it was using.

This method is the concrete wrapper for the abstract method CloseCore. The close method plays an important role in the life cycle of the Layer. It may be called after drawing to release any memory and other resources that were allocated since the Open method was called.

If you override this method, it is recommended that you take the following things into account: This method may be called multiple times, so we suggest you write the method so that that a call to a closed Layer is ignored and does not generate an error. We also suggest that in the Close you free all resources that have been opened. Remember that the object will not be destroyed, but will be re-opened possibly in the near future.

As this is a concrete public method that wraps a Core method, we reserve the right to add events and other logic to pre- or post-process data returned by the Core version of the method. In this way, we leave our framework open on our end, but also allow you the developer to extend our logic to suit your needs. If you have questions about this, please contact our support team as we would be happy to work with you on extending our framework.

<!– ThinkGeo.MapSuite.PortableCore.Layer –> Go Back

This method draws the Layer.

This method is the concrete wrapper for the abstract method DrawCore. This method draws the representation of the layer based on the extent you provided.

As this is a concrete public method that wraps a Core method, we reserve the right to add events and other logic to pre- or post-process data returned by the Core version of the method. In this way, we leave our framework open on our end, but also allow you the developer to extend our logic to suit your needs. If you have questions about this, please contact our support team as we would be happy to work with you on extending our framework.

<!– ThinkGeo.MapSuite.PortableCore.Layer –> Go Back

<!– System.Object –> Go Back

This method returns the bounding box of the Layer.

This method is the concrete wrapper for the abstract method GetBoundingBoxCore. This method returns the bounding box of the RasterLayer.

As this is a concrete public method that wraps a Core method, we reserve the right to add events and other logic to pre- or post-process data returned by the Core version of the method. In this way, we leave our framework open on our end, but also allow you the developer to extend our logic to suit your needs. If you have questions about this, please contact our support team as we would be happy to work with you on extending our framework.

<!– ThinkGeo.MapSuite.PortableCore.Layer –> Go Back

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This method returns the horizontal resolution of the image.

This method returns the horizontal resolution of the image.

<!– ThinkGeo.MapSuite.PortableCore.RasterLayer –> Go Back

This method returns the projection parameters of the current layer.

This method returns the projection parameters of the current layer.

<!– ThinkGeo.MapSuite.PortableCore.RasterLayer –> Go Back

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This method returns the vertical resolution of the image.

This method returns the vertical resolution of the image.

<!– ThinkGeo.MapSuite.PortableCore.RasterLayer –> Go Back

This method opens the Layer so that it is initialized and ready to use.

This method is the concrete wrapper for the abstract method OpenCore. The open method plays an important role, as it is responsible for initializing the Layer. Most methods on the Layer will throw an exception if the state of the Layer is not opened. When the map draws each layer, the layer will be opened as one of its first steps; then, after it is finished drawing with that layer, it will close it. In this way, we are sure to release all resources used by the Layer.

When implementing the abstract method, consider opening the FeatureSource or RasterSource. You will get a chance to close these in the Close method of the Layer.

As this is a concrete public method that wraps a Core method, we reserve the right to add events and other logic to pre- or post-process data returned by the Core version of the method. In this way, we leave our framework open on our end, but also allow you the developer to extend our logic to suit your needs. If you have questions about this, please contact our support team as we would be happy to work with you on extending our framework.

<!– ThinkGeo.MapSuite.PortableCore.Layer –> Go Back

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<!– ThinkGeo.MapSuite.PortableCore.Layer –> Go Back

<!– ThinkGeo.MapSuite.PortableCore.Layer –> Go Back

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Create a copy of Layer using the deep clone process. The default implemenation uses serialization.

The difference between deep clone and shallow clone is as follows: In shallow cloning, only the object is copied; the objects within it are not. By contrast, deep cloning copies the cloned object as well as all the objects within.

<!– ThinkGeo.MapSuite.PortableCore.Layer –> Go Back

<!– ThinkGeo.MapSuite.PortableCore.Layer(overriden) –> Go Back

<!– ThinkGeo.MapSuite.PortableCore.Layer –> Go Back

This method will draw the image from the GeoImage source based on the parameters provided.

The DrawCore method will be called when the layer is being drawn. It will determine if the image is within the extent and the threshold defined. If these parameters are met, it will query the RasterSource for an image and then apply the other various properties (such as transparency, etc.) on the image. Lastly, it will draw the image on the GeoImage or native image passed into the method.

<!– ThinkGeo.MapSuite.PortableCore.Layer(overriden) –> Go Back

This method will draw on the canvas when the layer.Draw throw exception and the DrawExceptionMode is set to DrawException instead of ThrowException.

This method can be overriden its logic by rewrite the DrawExceptionCore.

<!– ThinkGeo.MapSuite.PortableCore.Layer –> Go Back

This method will draw on the canvas when the layer.Draw throw exception and the DrawExceptionMode is set to DrawException instead of ThrowException.

<!– ThinkGeo.MapSuite.PortableCore.Layer –> Go Back

<!– System.Object –> Go Back

<!– ThinkGeo.MapSuite.PortableCore.Layer(overriden) –> Go Back

<!– System.Object –> Go Back

<!– ThinkGeo.MapSuite.PortableCore.Layer –> Go Back

<!– ThinkGeo.MapSuite.PortableCore.Layer –> Go Back

<!– ThinkGeo.MapSuite.PortableCore.Layer –> Go Back

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<!– ThinkGeo.MapSuite.PortableCore.Layer(overriden) –> Go Back

<!– ThinkGeo.MapSuite.PortableCore.Layer –> Go Back

This property gets and sets the amount of blue to apply to the image.

<!– ThinkGeo.MapSuite.PortableCore.RasterLayer –> Go Back

Gets or sets the DrawExcpetionMode when exception happens.

<!– ThinkGeo.MapSuite.PortableCore.Layer –> Go Back

This property gets the last drawing time for the layer.

We track the drawing time for the layer and report it back in this method. This is useful for determining the speed of various layers.

<!– ThinkGeo.MapSuite.PortableCore.Layer –> Go Back

This property gets and sets the amount of green to apply to the image.

<!– ThinkGeo.MapSuite.PortableCore.RasterLayer –> Go Back

This property checks to see if a Layer has a BoundingBox or not. If it has no BoundingBox, it will throw an exception when you call the GetBoundingBox() and GetFullExtent() APIs. In GdiPlusRasterLayer, we override this API and mark it as true.

The default implementation in the base class returns false.

<!– ThinkGeo.MapSuite.PortableCore.Layer(overriden) –> Go Back

This property returns true if the RasterLayer contains projection parameters and false if it does not contain any projection parameters.

<!– ThinkGeo.MapSuite.PortableCore.RasterLayer –> Go Back

This property gets and sets the ImageSource used by the RasterLayer.

The set for this property is protected and only intended to be used by developers who are creating their own ImageSources. This is the main property to set for developers who are creating their own RasterLayer derivatives.

<!– ThinkGeo.MapSuite.PortableCore.RasterLayer –> Go Back

This property gets and sets if the image should be converted to grayscale.

<!– ThinkGeo.MapSuite.PortableCore.RasterLayer –> Go Back

This property gets and sets whether the image should be converted to negative (inverse colors).

<!– ThinkGeo.MapSuite.PortableCore.RasterLayer –> Go Back

This property returns true if the Layer is open and false if it is not.

This method is the concrete wrapper for the abstract method IsOpenCore. Various methods on the Layer require that it be in an open state. If one of those methods is called when the state is not open, then the method will throw an exception. To enter the open state, you must call the Layer Open method. The method will raise an exception if the current Layer is already open.

As this is a concrete public method that wraps a Core method, we reserve the right to add events and other logic to pre- or post-process data returned by the Core version of the method. In this way, we leave our framework open on our end, but also allow you the developer to extend our logic to suit your needs. If you have questions about this, please contact our support team as we would be happy to work with you on extending our framework.

<!– ThinkGeo.MapSuite.PortableCore.Layer –> Go Back

This property gets and set the visible state of the layer.

If this property is set to false, the layer will not draw. We ensure this in the Draw method. This is useful for legends and other controls that control the visibility of layers.

<!– ThinkGeo.MapSuite.PortableCore.Layer –> Go Back

Gets a value represents a collection of key colors. If HasKeyColor property is false, it will throw exception when you use KeyColors.

It will make these colors transparent when draw image.

<!– ThinkGeo.MapSuite.PortableCore.RasterLayer –> Go Back

This property gets and sets the lower threshold in the scale at which to display the image.

Below the lower threshold in scale, the image will not be displayed. This, in conjunction with the UpperThreshold property, allows you to create a band in which it is suitable to display the image source. By default, the upper threshold is double.max and lower threshold is double.min. This means the image should always display.

<!– ThinkGeo.MapSuite.PortableCore.RasterLayer –> Go Back

This property gets and sets the name for the layer.

The name is user defined. It is useful to set, as it may be used for higher level components such as legends, etc.

<!– ThinkGeo.MapSuite.PortableCore.Layer –> Go Back

This property gets and sets the path and filename of the image file you want to use.

This should be a complete path and filename for the image file.

<!– ThinkGeo.MapSuite.PortableCore.GdiPlusRasterLayer –> Go Back

This property gets and sets the amount of red to apply to the image.

<!– ThinkGeo.MapSuite.PortableCore.RasterLayer –> Go Back

<!– ThinkGeo.MapSuite.PortableCore.Layer –> Go Back

This property gets and sets the amount of transparency to apply to the image.

<!– ThinkGeo.MapSuite.PortableCore.Layer –> Go Back

This property gets and sets the upper threshold in the scale at which to display the image.

Above the upper threshold in scale, the image will not be displayed. This, in conjunction with the LowerThreshold property, allows you to create a band in which it is suitable to display the image source. By default, the upper threshold is double.max and lower threshold is double.min. This means the image should always display.

<!– ThinkGeo.MapSuite.PortableCore.RasterLayer –> Go Back

<!– ThinkGeo.MapSuite.PortableCore.Layer(overriden) –> Go Back

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This event allows you to pass in your own stream to represent the image.

If you wish, you can pass in your own stream to represent the image. The stream can come from a variety of places, including isolated storage, a compressed file, or an encrypted stream. When the image is finished with the stream it will dispose of it, so be sure to keep this in mind when passing the stream in. If you do not pass in an alternate stream, the class will attempt to load the file from the file system using the PathFileName property.

<!– ThinkGeo.MapSuite.PortableCore.GdiPlusRasterLayer –> Go Back

NOTOC MapSuitePortableCore ThinkGeo.MapSuite.PortableCore UpdateDocumentation