TIEPolylineLayer.EnableComplexPath

Declaration

property EnableComplexPath: Boolean;

Description

Enables path points to support additional properties such as actions, LineTo, MoveTo, etc, as well as bezier and quadratic curves, and arcs.

You do not need to enable EnableComplexPath, as it is enabled automatically in the following situations:
◼If you set points with the TIEPointFormat overload
◼If you specify as SVG path tag
◼If you import an SVG file that contains a path tag

If you set EnableComplexPath to false, the point formatting will be cleared which may change how the layer looks.

Default: False

Comparing Complex Methods 1

Three alternative methods to create a complex polyline layer:

// Set path using SVG tag
ImageEnView1.LayersAdd( ielkPolyline );
polyLayer := TIEPolylineLayer( ImageEnView1.CurrentLayer );
polyLayer.AsSVG := '<path d="M 10,10 L 90,10 M 50,10 L 50,190 M 10,190 L 90,190" stroke="orange" stroke-width="30" fill="none" />';
ImageEnView1.Update();


// Set path using arrays of TDPoint and TIEPointFormat
ImageEnView1.LayersAdd( ielkPolyline );
polyLayer := TIEPolylineLayer( ImageEnView1.CurrentLayer );
polyLayer.BorderColor := clWebOrange;
polyLayer.BorderWidth := 30;
polyLayer.FillColor   := clNone;
polyLayer.PolylineClosed := False;

SetLength( pts, 6 );
SetLength( fmts, 6 );

fmts[0].Action := iepaMoveTo;
pts[0] := DPoint( 10, 10 );

fmts[1].Action := iepaLineTo;
pts[1] := DPoint( 90, 10 );

fmts[2].Action := iepaMoveTo;
pts[2] := DPoint( 50, 10 );

fmts[3].Action := iepaLineTo;
pts[3] := DPoint( 50, 190 );

fmts[4].Action := iepaMoveTo;
pts[4] := DPoint( 10, 190 );

fmts[5].Action := iepaLineTo;
pts[5] := DPoint( 90, 190 );

polyLayer.SetPoints( pts, fmts, iepbBitmap );
ImageEnView1.Update();


// Set path using AddPath overload
ImageEnView1.LayersAdd( ielkPolyline );
polyLayer := TIEPolylineLayer( ImageEnView1.CurrentLayer );
polyLayer.BorderColor := clWebOrange;
polyLayer.BorderWidth := 30;
polyLayer.FillColor   := clNone;
polyLayer.PolylineClosed := False;

polyLayer.AddPoint( 10, 10, iepbBitmap, iepaMoveTo );
polyLayer.AddPoint( 90, 10, iepbBitmap, iepaLineTo );
polyLayer.AddPoint( 50, 10, iepbBitmap, iepaMoveTo );
polyLayer.AddPoint( 50, 190, iepbBitmap, iepaLineTo );
polyLayer.AddPoint( 10, 190, iepbBitmap, iepaMoveTo );
polyLayer.AddPoint( 90, 190, iepbBitmap, iepaLineTo );
ImageEnView1.Update();

Comparing Complex Methods 2

Three alternative methods to create a complex curved polyline layer:
 
// Set path using SVG tag
ImageEnView1.LayersAdd( ielkPolyline );
polyLayer := TIEPolylineLayer( ImageEnView1.CurrentLayer );
polyLayer.AsSVG := '<path d="M 70,30 C 130,-30 130,90 70,30 C 10,90 10,-30 70,30 Z" style="fill:yellow; stroke:green; stroke-width:3" />';
ImageEnView1.Update();


// Set path using arrays of TDPoint and TIEPointFormat
ImageEnView1.LayersAdd( ielkPolyline );
polyLayer := TIEPolylineLayer( ImageEnView1.CurrentLayer );
polyLayer.BorderColor := clGreen;
polyLayer.BorderWidth := 3;
polyLayer.FillColor   := clYellow;

SetLength( pts, 3 );
SetLength( fmts, 3 );

// M 70,30
fmts[0].Action := iepaMoveTo;
pts[0] := DPoint( 70, 30 );

// C 130,-30 130,90 70,30
fmts[1].Action := iepaBezierCurveTo;
fmts[1].CurveX1 := 130;
fmts[1].CurveY1 := -30;
fmts[1].CurveX2 := 130;
fmts[1].CurveY2 := 90;
pts[1] := DPoint( 70, 30 );

// C 10,90 10,-30 70,30 Z
fmts[2].Action := iepaBezierCurveTo;
fmts[2].CurveX1 := 10;
fmts[2].CurveY1 := 90;
fmts[2].CurveX2 := 10;
fmts[2].CurveY2 := -30;
pts[2] := DPoint( 70, 30 );
fmts[2].ClosePath := True;

polyLayer.SetPoints( pts, fmts, iepbBitmap );
ImageEnView1.Update();


// Set path using AddPath overload
ImageEnView1.LayersAdd( ielkPolyline );
polyLayer := TIEPolylineLayer( ImageEnView1.CurrentLayer );
polyLayer.BorderColor := clGreen;
polyLayer.BorderWidth := 3;
polyLayer.FillColor   := clYellow;

// M 70,30
polyLayer.AddPoint( 70, 30, iepbBitmap, iepaMoveTo );

// C 130,-30 130,90 70,30
polyLayer.AddPoint( 70, 30, iepbBitmap, iepaBezierCurveTo, False, 130, -30, 130, 90 );

// C 10,90 10,-30 70,30 Z
polyLayer.AddPoint( 70, 30, iepbBitmap, iepaBezierCurveTo, True, 10, 90, 10, -30 );

ImageEnView1.Update();


// Add the following SVG Arc path: <path fill="#0c64d2" d="M49 58 A42 42 10 1 0 50 58z"/>
ImageEnView1.LayersAdd( ielkPolyline );
TIEPolylineLayer( ImageEnView1.CurrentLayer ).AddPoint( 49, 58, iepbBitmap, iepaMoveTo );
TIEPolylineLayer( ImageEnView1.CurrentLayer ).AddPoint( 50 58, iepbBitmap, iepaArcTo, True, 42, 42, 10, True, False );
ImageEnView1.Update();

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