private void GetPathGeometries(IScatterSymbol symbol, double symbolSize, out PathGeometry fill, out PathGeometry frame, out PathGeometry inset)
{
symbol.CalculatePolygons(null, out var framePolygon, out var insetPolygon, out var fillPolygon);
fill = fillPolygon == null ? null : GetPathGeometry(fillPolygon, symbolSize);
frame = framePolygon == null ? null : GetPathGeometry(framePolygon, symbolSize);
inset = insetPolygon == null ? null : GetPathGeometry(insetPolygon, symbolSize);
}
/// <summary>
/// Calculates the paths and stores them into a structure given by the argument <paramref name="cachedPathData"/>.
/// </summary>
/// <param name="scatterSymbol">ScatterSymbol, already processed via <see cref="CalculateOverriddenScatterSymbol"/></param>
/// <param name="symbolSize">The size of the symbol for which to calculate the paths.</param>
/// <param name="cachedPathData">The cached path data.</param>
/// <returns>True if new paths have been calculated; false if the previously cached data could be used.</returns>
private bool CalculatePaths(IScatterSymbol scatterSymbol, double symbolSize, ref CachedPathData cachedPathData)
{
if (symbolSize == cachedPathData.SymbolSize)
{
return(false); // we assume that the structure already contains valid data.
}
cachedPathData.SymbolSize = symbolSize;
cachedPathData.FillPath = cachedPathData.FramePath = cachedPathData.InsetPath = null;
if (scatterSymbol is NoSymbol)
{
return(true);
}
double?overrideRelativeStructureWidth = null;
if (_overrideStructureWidthOffset.HasValue || _overrideStructureWidthFactor.HasValue)
{
overrideRelativeStructureWidth = (_overrideStructureWidthFactor ?? 0) + (_overrideStructureWidthOffset ?? 0) / symbolSize;
}
scatterSymbol.CalculatePolygons(overrideRelativeStructureWidth, out var framePolygon, out var insetPolygon, out var fillPolygon);
// calculate the path only once
if (null != insetPolygon)
{
cachedPathData.InsetPath = new GraphicsPath();
foreach (var list in insetPolygon)
{
cachedPathData.InsetPath.AddPolygon(ToPointFArray(list, symbolSize));
}
}
if (null != fillPolygon)
{
cachedPathData.FillPath = new GraphicsPath();
foreach (var list in fillPolygon)
{
cachedPathData.FillPath.AddPolygon(ToPointFArray(list, symbolSize));
}
}
if (null != framePolygon)
{
cachedPathData.FramePath = new GraphicsPath();
foreach (var list in framePolygon)
{
cachedPathData.FramePath.AddPolygon(ToPointFArray(list, symbolSize));
}
}
return(true);
}
/// <summary>
/// Calculates the paths and stores them into a structure given by the argument <paramref name="cachedPathData"/>.
/// </summary>
/// <param name="scatterSymbol">ScatterSymbol, already processed via <see cref="CalculateOverriddenScatterSymbol"/></param>
/// <param name="symbolSize">The size of the symbol for which to calculate the paths.</param>
/// <param name="cachedPathData">The cached path data.</param>
/// <returns>True if new paths have been calculated; false if the previously cached data could be used.</returns>
private bool CalculatePaths(IScatterSymbol scatterSymbol, double symbolSize, ref CachedPathData cachedPathData)
{
if (symbolSize == cachedPathData.SymbolSize)
return false; // we assume that the structure already contains valid data.
cachedPathData.SymbolSize = symbolSize;
cachedPathData.FillPath = cachedPathData.FramePath = cachedPathData.InsetPath = null;
if (scatterSymbol is NoSymbol)
{
return true;
}
List<List<ClipperLib.IntPoint>> insetPolygon = null;
List<List<ClipperLib.IntPoint>> framePolygon = null;
List<List<ClipperLib.IntPoint>> fillPolygon = null;
double? overrideRelativeStructureWidth = null;
if (_overrideStructureWidthOffset.HasValue || _overrideStructureWidthFactor.HasValue)
{
overrideRelativeStructureWidth = (_overrideStructureWidthFactor ?? 0) + (_overrideStructureWidthOffset ?? 0) / symbolSize;
}
scatterSymbol.CalculatePolygons(overrideRelativeStructureWidth, out framePolygon, out insetPolygon, out fillPolygon);
// calculate the path only once
if (null != insetPolygon)
{
cachedPathData.InsetPath = new GraphicsPath();
foreach (var list in insetPolygon)
cachedPathData.InsetPath.AddPolygon(ToPointFArray(list, symbolSize));
}
if (null != fillPolygon)
{
cachedPathData.FillPath = new GraphicsPath();
foreach (var list in fillPolygon)
cachedPathData.FillPath.AddPolygon(ToPointFArray(list, symbolSize));
}
if (null != framePolygon)
{
cachedPathData.FramePath = new GraphicsPath();
foreach (var list in framePolygon)
cachedPathData.FramePath.AddPolygon(ToPointFArray(list, symbolSize));
}
return true;
}
private void GetPathGeometries(IScatterSymbol symbol, double symbolSize, out PathGeometry fill, out PathGeometry frame, out PathGeometry inset)
{
List<List<ClipperLib.IntPoint>> framePolygon, insetPolygon, fillPolygon;
symbol.CalculatePolygons(null, out framePolygon, out insetPolygon, out fillPolygon);
fill = fillPolygon == null ? null : GetPathGeometry(fillPolygon, symbolSize);
frame = framePolygon == null ? null : GetPathGeometry(framePolygon, symbolSize);
inset = insetPolygon == null ? null : GetPathGeometry(insetPolygon, symbolSize);
}
