private void ApplyFilters(SKPaint paint, RasterizeLayerStyleDefinition layerStyleDef, RasterizeLayerStyle layerStyle)
{
paint.ColorFilter = SKColorFilter.CreateBlendMode(layerStyleDef.Color, SKBlendMode.SrcIn);
if (layerStyleDef.IsBlurEnabled && layerStyleDef.IsDilateEnabled)
{
paint.ImageFilter = SKImageFilter.CreateBlur(layerStyle.Blur.X, layerStyle.Blur.Y,
SKImageFilter.CreateDilate((int)layerStyle.Dilate.X, (int)layerStyle.Dilate.Y));
}
else if (layerStyleDef.IsBlurEnabled)
{
paint.ImageFilter = SKImageFilter.CreateBlur(layerStyle.Blur.X, layerStyle.Blur.Y);
}
else if (layerStyleDef.IsDilateEnabled)
{
paint.ImageFilter = SKImageFilter.CreateDilate((int)layerStyle.Dilate.X, (int)layerStyle.Dilate.Y);
}
}
/// <summary>
/// Renders a given layer on a surface and caches it.
/// </summary>
/// <param name="setting">Display setting</param>
/// <param name="layer">Which layer is it we're rendering</param>
/// <param name="layerStyleDef">Style definition</param>
/// <param name="layerStyle">Style to render</param>
/// <param name="segments">Which segments to render</param>
/// <param name="skewAngle">How much to skew</param>
public void RasterizeLayer(DisplaySetting setting, RasterizeLayer layer, RasterizeLayerStyleDefinition layerStyleDef, RasterizeLayerStyle layerStyle, IEnumerable <int> segments, float skewAngle)
{
var source = _svgs[setting.SegmentType][setting.StyleDefinition.SegmentWeight];
//Logger.Info("Rasterizing {0} segments of layer {1} on display {2} segment size = {3}x{4}", setting.SegmentType, layer, setting.Display, setting.Dim.SvgWidth, setting.Dim.SvgHeight);
using (var paint = new SKPaint()) {
ApplyFilters(paint, layerStyleDef, layerStyle);
foreach (var i in segments)
{
var initialKey = new RasterCacheKey(InitialCache, layer, setting.SegmentType, setting.StyleDefinition.SegmentWeight, i);
var cacheKey = new RasterCacheKey(setting.Display, layer, setting.SegmentType, setting.StyleDefinition.SegmentWeight, i);
if (!_rasterCache.ContainsKey(initialKey))
{
_rasterCache[initialKey] = RasterizeSegment(source[i].Picture, setting.Dim, skewAngle, paint);
}
else
{
if (_rasterCache.ContainsKey(cacheKey))
{
_rasterCache[cacheKey]?.Dispose();
}
_rasterCache[cacheKey] = RasterizeSegment(source[i].Picture, setting.Dim, skewAngle, paint);
}
}
}
}
