public static void Draw(SKCanvas canvas, ImageStyle symbolStyle, double x, double y,
SymbolCache symbolCache, float opacity, double mapRotation)
{
if (symbolStyle.BitmapId < 0)
{
return;
}
var bitmap = symbolCache.GetOrCreate(symbolStyle.BitmapId);
if (bitmap == null)
{
return;
}
// 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:
if (bitmap.Bitmap == null)
{
return;
}
BitmapRenderer.Draw(canvas, bitmap.Bitmap,
(float)x, (float)y,
rotation,
(float)offsetX, (float)offsetY,
opacity: opacity, scale: (float)symbolStyle.SymbolScale);
break;
case BitmapType.Picture:
if (bitmap.Picture == null)
{
return;
}
PictureRenderer.Draw(canvas, bitmap.Picture,
(float)x, (float)y,
rotation,
(float)offsetX, (float)offsetY,
opacity: opacity, scale: (float)symbolStyle.SymbolScale);
break;
case BitmapType.Svg:
if (bitmap.Svg == null)
{
return;
}
SvgRenderer.Draw(canvas, bitmap.Svg,
(float)x, (float)y,
rotation,
(float)offsetX, (float)offsetY,
opacity: opacity, scale: (float)symbolStyle.SymbolScale);
break;
case BitmapType.Sprite:
if (bitmap.Sprite == null)
{
return;
}
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));
}
if (sprite.Data is SKImage skImage)
{
BitmapRenderer.Draw(canvas, skImage,
(float)x, (float)y,
rotation,
(float)offsetX, (float)offsetY,
opacity: opacity, scale: (float)symbolStyle.SymbolScale);
}
break;
}
}
private static bool DrawImage(SKCanvas canvas, IReadOnlyViewport viewport, ILayer layer, double x, double y, SymbolStyle symbolStyle, ISymbolCache symbolCache)
{
var opacity = (float)(layer.Opacity * symbolStyle.Opacity);
var(destX, destY) = viewport.WorldToScreenXY(x, y);
if (symbolStyle.BitmapId < 0)
{
return(false);
}
var bitmap = (BitmapInfo)symbolCache.GetOrCreate(symbolStyle.BitmapId);
if (bitmap == null)
{
return(false);
}
// 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)viewport.Rotation;
}
switch (bitmap.Type)
{
case BitmapType.Bitmap:
if (bitmap.Bitmap == null)
{
return(false);
}
BitmapRenderer.Draw(canvas, bitmap.Bitmap,
(float)destX, (float)destY,
rotation,
(float)offsetX, (float)offsetY,
opacity: opacity, scale: (float)symbolStyle.SymbolScale);
break;
case BitmapType.Picture:
if (bitmap.Picture == null)
{
return(false);
}
PictureRenderer.Draw(canvas, bitmap.Picture,
(float)destX, (float)destY,
rotation,
(float)offsetX, (float)offsetY,
opacity: opacity, scale: (float)symbolStyle.SymbolScale, blendModeColor: symbolStyle.BlendModeColor);
break;
case BitmapType.Svg:
// Todo: Perhaps remove BitmapType.Svg and SvgRenderer?
// It looks like Bitmaptype.Svg is not use at all the the momement.
if (bitmap.Svg == null)
{
return(false);
}
SvgRenderer.Draw(canvas, bitmap.Svg,
(float)destX, (float)destY,
rotation,
(float)offsetX, (float)offsetY,
opacity: opacity, scale: (float)symbolStyle.SymbolScale);
break;
case BitmapType.Sprite:
if (bitmap.Sprite == null)
{
return(false);
}
var sprite = bitmap.Sprite;
if (sprite.Data == null)
{
var bitmapAtlas = (BitmapInfo)symbolCache.GetOrCreate(sprite.Atlas);
sprite.Data = bitmapAtlas?.Bitmap?.Subset(new SKRectI(sprite.X, sprite.Y, sprite.X + sprite.Width,
sprite.Y + sprite.Height));
}
if (sprite.Data is SKImage skImage)
{
BitmapRenderer.Draw(canvas, skImage,
(float)destX, (float)destY,
rotation,
(float)offsetX, (float)offsetY,
opacity: opacity, scale: (float)symbolStyle.SymbolScale);
}
break;
}
return(true);
}