public static void Draw(SKCanvas canvas, ImageStyle symbolStyle, Point destination,
SymbolCache symbolCache, float opacity, double mapRotation)
{
if (symbolStyle.BitmapId < 0)
{
return;
}
var bitmap = symbolCache.GetOrCreate(symbolStyle.BitmapId);
// Calc offset (relative or absolute)
var offsetX = symbolStyle.SymbolOffset.IsRelative ? bitmap.Width * symbolStyle.SymbolOffset.X : symbolStyle.SymbolOffset.X;
var offsetY = symbolStyle.SymbolOffset.IsRelative ? bitmap.Height * symbolStyle.SymbolOffset.Y : symbolStyle.SymbolOffset.Y;
var rotation = (float)symbolStyle.SymbolRotation;
if (symbolStyle.RotateWithMap)
{
rotation += (float)mapRotation;
}
switch (bitmap.Type)
{
case BitmapType.Bitmap:
BitmapHelper.RenderBitmap(canvas, bitmap.Bitmap,
(float)destination.X, (float)destination.Y,
rotation,
(float)offsetX, (float)offsetY,
opacity: opacity, scale: (float)symbolStyle.SymbolScale);
break;
case BitmapType.Svg:
BitmapHelper.RenderSvg(canvas, bitmap.Svg,
(float)destination.X, (float)destination.Y,
rotation,
(float)offsetX, (float)offsetY,
opacity: opacity, scale: (float)symbolStyle.SymbolScale);
break;
case BitmapType.Sprite:
var sprite = bitmap.Sprite;
if (sprite.Data == null)
{
var bitmapAtlas = symbolCache.GetOrCreate(sprite.Atlas);
sprite.Data = bitmapAtlas.Bitmap.Subset(new SKRectI(sprite.X, sprite.Y, sprite.X + sprite.Width,
sprite.Y + sprite.Height));
}
BitmapHelper.RenderBitmap(canvas, (SKImage)sprite.Data,
(float)destination.X, (float)destination.Y,
rotation,
(float)offsetX, (float)offsetY,
opacity: opacity, scale: (float)symbolStyle.SymbolScale);
break;
}
}
private static void DrawPointWithBitmapStyle(SKCanvas canvas, SymbolStyle symbolStyle, Point destination,
SymbolCache symbolCache)
{
var bitmap = symbolCache.GetOrCreate(symbolStyle.BitmapId);
BitmapHelper.RenderBitmap(canvas, bitmap.Bitmap,
(float)destination.X, (float)destination.Y,
(float)symbolStyle.SymbolRotation,
(float)symbolStyle.SymbolOffset.X, (float)symbolStyle.SymbolOffset.Y,
opacity: (float)symbolStyle.Opacity, scale: (float)symbolStyle.SymbolScale);
}
private static void DrawPointWithBitmapStyle(SKCanvas canvas, SymbolStyle symbolStyle, Point destination,
SymbolCache symbolCache, float opacity)
{
var bitmap = symbolCache.GetOrCreate(symbolStyle.BitmapId, false);
// Calc offset (relative or absolut)
var offsetX = symbolStyle.SymbolOffset.IsRelative ? bitmap.Width * symbolStyle.SymbolOffset.X : symbolStyle.SymbolOffset.X;
var offsetY = symbolStyle.SymbolOffset.IsRelative ? bitmap.Height * symbolStyle.SymbolOffset.Y : symbolStyle.SymbolOffset.Y;
BitmapHelper.RenderBitmap(canvas, bitmap.Bitmap,
(float)destination.X, (float)destination.Y,
(float)symbolStyle.SymbolRotation,
(float)offsetX, (float)offsetY,
opacity: opacity, scale: (float)symbolStyle.SymbolScale);
}
public static void DrawAsBitmap(SKCanvas canvas, LabelStyle style, IFeature feature, float x, float y, float layerOpacity)
{
var text = style.GetLabelText(feature);
var key = text + "_" + style.Font.FontFamily + "_" + style.Font.Size + "_" + (float)style.Font.Size + "_" +
style.BackColor + "_" + style.ForeColor;
if (!LabelCache.Keys.Contains(key))
{
LabelCache[key] = new BitmapInfo {
Bitmap = CreateLabelAsBitmap(style, text, layerOpacity)
}
}
;
var info = LabelCache[key];
BitmapHelper.RenderBitmap(canvas, info.Bitmap, (int)Math.Round(x), (int)Math.Round(y),
offsetX: (float)style.Offset.X, offsetY: (float)-style.Offset.Y,
horizontalAlignment: style.HorizontalAlignment, verticalAlignment: style.VerticalAlignment);
}
