Declaration

procedure PolyPolylineFS(Bitmap: TCustomBitmap32; const Points: TArrayOfArrayOfFloatPoint; Color: TColor32; Closed: Boolean = False; StrokeWidth: TFloat = 1.0; JoinStyle: TJoinStyle = jsMiter; EndStyle: TEndStyle = esButt; MiterLimit: TFloat = 4.0; Transformation: TTransformation = nil); overload;
procedure PolyPolylineFS(Bitmap: TCustomBitmap32; const Points: TArrayOfArrayOfFloatPoint; Filler: TCustomPolygonFiller; Closed: Boolean = False; StrokeWidth: TFloat = 1.0; JoinStyle: TJoinStyle = jsMiter; EndStyle: TEndStyle = esButt; MiterLimit: TFloat = 4.0; Transformation: TTransformation = nil); overload;

procedure PolyPolylineXS(Bitmap: TCustomBitmap32; const Points: TArrayOfArrayOfFixedPoint; Color: TColor32; Closed: Boolean = False; StrokeWidth: TFixed = $10000; JoinStyle: TJoinStyle = jsMiter; EndStyle: TEndStyle = esButt; MiterLimit: TFixed = $40000; Transformation: TTransformation = nil); overload;
procedure PolyPolylineXS(Bitmap: TCustomBitmap32; const Points: TArrayOfArrayOfFixedPoint; Filler: TCustomPolygonFiller; Closed: Boolean = False; StrokeWidth: TFixed = $10000; JoinStyle: TJoinStyle = jsMiter; EndStyle: TEndStyle = esButt; MiterLimit: TFixed = $40000; Transformation: TTransformation = nil); overload;

Parameters

Parameter	Type	Description
Bitmap	TCustomBitmap32	Destination bitmap.
Points	-	Array of polyline contours.
Color	TColor32	Solid stroke color.
Filler	TCustomPolygonFiller	Custom span filler.
Closed	Boolean	Specifies whether each polyline contour forms a closed loop.
StrokeWidth	-	Stroke line width.
JoinStyle	TJoinStyle	Corner join style (jsMiter, jsBevel, jsRound).
EndStyle	TEndStyle	Line end cap style (esButt, esSquare, esRound).
MiterLimit	-	Miter limit ratio before beveling sharp miter joins.
Transformation	TTransformation	Optional coordinate transformation.

Description

The PolyPolyline routines render multiple stroked polyline contours defined by Points onto a destination Bitmap.

Function variants support floating-point (FS) and fixed-point (XS) coordinate inputs as well as solid color or custom span filler rendering. Stroke outlines are generated automatically for all contours according to StrokeWidth, JoinStyle, EndStyle, and MiterLimit.

Variants

Variant	Coordinate Type	Description
PolyPolylineFS	Floating-point	Renders multiple floating-point polyline contours with antialiased stroke outlines.
PolyPolylineXS	Fixed-point	Renders multiple fixed-point polyline contours with antialiased stroke outlines.

Example

var
  Lines: TArrayOfArrayOfFloatPoint;
begin
  SetLength(Lines, 2);
  Lines[0] := BuildLine(FloatPoint(10, 10), FloatPoint(100, 10));
  Lines[1] := BuildLine(FloatPoint(10, 50), FloatPoint(100, 50));

  // Render multiple stroke lines
  PolyPolylineFS(Bitmap, Lines, clGreen32, False, 2.5);
end;

See also

• Naming Conventions
• Polyline
• PolyPolygon
• DashLine