public static void Draw(SKCanvas canvas, IReadOnlyViewport viewport, SymbolCache symbolCache,
float opacity, Point destination, CalloutStyle calloutStyle)
{
if (calloutStyle.BitmapId < 0 || calloutStyle.Invalidated)
{
if (calloutStyle.Content < 0 && calloutStyle.Type == CalloutType.Custom)
{
return;
}
if (calloutStyle.Invalidated)
{
UpdateContent(calloutStyle);
}
RenderCallout(calloutStyle);
}
// Reuse ImageStyleRenderer because the only thing we need to do is to draw an image
ImageStyleRenderer.Draw(canvas, calloutStyle, destination, symbolCache, opacity, (float)viewport.Rotation);
}
public static void Draw(SKCanvas canvas, IReadOnlyViewport viewport, IStyle style, IFeature feature,
IGeometry geometry, SymbolCache symbolCache, float opacity)
{
var point = geometry as Point;
var destination = viewport.WorldToScreen(point);
if (style is CalloutStyle calloutStyle)
{
CalloutStyleRenderer.Draw(canvas, viewport, symbolCache, opacity, destination, calloutStyle);
}
else if (style is LabelStyle labelStyle)
{
LabelRenderer.Draw(canvas, labelStyle, feature, destination, opacity);
}
else if (style is SymbolStyle symbolStyle)
{
if (symbolStyle.BitmapId >= 0)
{
// todo: Remove this call. ImageStyle should be used instead of SymbolStyle with BitmapId
ImageStyleRenderer.Draw(canvas, symbolStyle, destination, symbolCache, opacity, viewport.Rotation);
}
else
{
SymbolStyleRenderer.Draw(canvas, symbolStyle, destination, opacity, symbolStyle.SymbolType, viewport.Rotation);
}
}
else if (style is ImageStyle imageStyle)
{
ImageStyleRenderer.Draw(canvas, imageStyle, destination, symbolCache, opacity, viewport.Rotation);
}
else if (style is VectorStyle vectorStyle)
{
// Use the SymbolStyleRenderer and specify Ellipse
SymbolStyleRenderer.Draw(canvas, vectorStyle, destination, opacity, SymbolType.Ellipse);
}
else
{
throw new Exception($"Style of type '{style.GetType()}' is not supported for points");
}
}