PointVisualizer.GetImage Method
Renders a feature onto a bitmap and returns it.
GetImage(AttributeSet attributes, PixelSizeAdjustments pixelSizeAdjustments, out System.Int32 xHot, out System.Int32 yHot)
Renders a feature onto a bitmap and returns it.Syntax
public Raster GetImage (
AttributeSet attributes,
PixelSizeAdjustments pixelSizeAdjustments,
out System.Int32 xHot,
out System.Int32 yHot
)Parameters
The attributes controlling the rendering.
Specifies extra scale factors to adjust image for a specific pixel size, or null.
Returns the x coordinate of the hot spot of the returned image.
Returns the y coordinate of the hot spot of the returned image.
Return Value
The generated bitmap.
Remarks
This method creates a temporary feature, with a PointGeometry in [0, 0] and the supplied attributes, and renders in onto a bitmap. This bitmap is then cropped to the actual output, and returned as a Raster. Hot spot information is also returned in the xHot and yHot parameters.
The length unit of the visualizer must be Pixels or an exception will be thrown.
If the pixelSizeAdjustments is not null, it will be used to create a scaled image, just like Drawable.PixelSizeAdjustments would adjust the rendering for a specific screen pixel size.
If no output is produced by the visualizer, for instance if the condition evaluates to False with the supplied attributes, a null raster will be returned.
If the bitmap to be returned would be very large (more than 2048 pixels horizontally or vertically), an exception is thrown.
Platforms
Windows, Linux, Android