TPostScriptPrinterCanvas.Chord procedure

Declaration

procedure Chord(x1: Integer; y1: Integer; x2: Integer; y2: Integer; 
 angle1: Integer; angle2: Integer); override
procedure Chord(x1: Integer; y1: Integer; x2: Integer; y2: Integer; 
 SX: Integer; SY: Integer; EX: Integer; EY: Integer)
 ; override

Description

Not described here; this is what TCanvas.Chord says of it:

Draws a filled chord shape starting and ending at the specified angular positions on the circumference of an ellipse. This shape consists of an elliptical arc and a straight line connecting the start and end points of the arc.

Use Chord to draw a chord shape on the canvas. The enclosed area is filled by the current Brush of the canvas, the outline is drawn by the current Pen.

The full ellipse from which a part is used for the arc is enclosed by the rectangle given by the corner coordinates x1 (left), y1 (top), x2 (right), y2 (bottom).

The angles Angle16Deg and Angle16DegLength define the position and length of the arc on the circumference of the ellipse. They are given in 1/16th of a degree. For example, a full circle equals 5760 (16*360).

Positive values of Angle16Deg and Angle16DegLength mean counter-clockwise while negative values mean clockwise directions. Zero degrees is at the 3 o'clock position.

Alternatively the starting and ending points may be specified as radial points (SX, SY, EX, EY). These points do not necessarily have to be elements of the arc itself. Instead, the intersection of the lines between the ellipse center and the points (SX, SY) and (EX, EY) with the ellipse define the arc's start and end points, respectively.