<WDPic variable>.DrawPolyline (Function)

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Drawing functions on WDPic variables

DrawPolyline

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<WDPic variable>.DrawPolyline (Function)

In french: <Variable WDPic>.DessinePolyligne

Draws a line composed of multiple segments in a variable of type WDPic.

The first coordinate indicates the starting point of the first segment, then each coordinate indicates the end of the previous segment and the beginning of the next segment.

Example

MyWDPicImage is WDPic = "Test.gif"

MyWDPicImage.Pen(LightBlue, 2, 4)
arrCoordinatesXY2 is array of 0 int = [2, 2, 140, 2, 150, 70, 0, 100, 200,100]
MyWDPicImage.DrawPolyline(arrCoordinatesXY2)

IMG_MyDrawing = MyWDPicImage

Syntax

Building a line point by point Hide the details

<WDPic image>.DrawPolyline(<NbPoint> , <X1> , <Y1> , <X2> , <Y2> [, <Xn> [, <Yn> [, <Line color>]]])

<WDPic image>: WDPic variable

Name of the WDPic variable to be used. Only the background layer will be handled.

<NbPoint>: Integer

Number of line segments. This parameter defines the number of <X>, <Y> pairs to specify in the function.

<X1>: Integer

X-coordinate of the first segment of the line. These coordinates are expressed in pixels.

<Y1>: Integer

Y-coordinate of the first segment of the line. These coordinates are expressed in pixels.

<X2>: Integer

X-coordinate of the second segment of the line. These coordinates are expressed in pixels.

<Y2>: Integer

Y-coordinate of the second segment of the line. These coordinates are expressed in pixels.

<Xn>: Optional integer

X-coordinate of the N segment of the line. These coordinates are expressed in pixels.

<Yn>: Optional integer

Y-coordinate of the N segment of the line. These coordinates are expressed in pixels.

<Line color>: Integer or constant (optional)

Line color. This color can correspond to:
an RGB color (returned by RGB),
an HSL color (returned by HSL),
a WLanguage preset color.
If this parameter is not specified, the line color:
corresponds to the color specified in the last call to <WDPic variable>.Pen,
is the same as the background color if <WDPic variable>.Pen has not been used.

Building a line via an array of X and Y-coordinates Hide the details

<WDPic image>.DrawPolyline(<Array of coordinates> [, <Line color>])

<WDPic image>: WDPic variable

Name of the WDPic variable to be used. Only the background layer will be handled.

<Array of coordinates>: Array of integers or array of points

WLanguage array of integers containing the coordinates of segments that make up the line. The even indices represent the X-coordinates while the odd indices represent the Y-coordinates of the points. These coordinates are expressed in pixels.

<Line color>: Integer or constant (optional)

Line color. This color can correspond to:
an RGB color (returned by RGB),
an HSL color (returned by HSL),
a WLanguage preset color,
a variable of type Color.
If this parameter is not specified, the line color:
corresponds to the color specified in the last call to <WDPic variable>.Pen,
is the same as the background color if <WDPic variable>.Pen has not been used.

Building a line using a variable of type Polygon Hide the details

<WDPic image>.DrawPolyline(<Polygon> [, <Line color>])

<WDPic image>: WDPic variable

Name of the WDPic variable to be used. Only the background layer will be handled.

<Polygon>: Polygon variable

Name of the Polygon variable that describes the different points of the polygon.

<Line color>: Integer or constant (optional)

Line color. This color can correspond to:
an RGB color (returned by RGB),
an HSL color (returned by HSL),
a WLanguage preset color,
a variable of type Color.
If this parameter is not specified, the line color:
corresponds to the color specified in the last call to <WDPic variable>.Pen,
is the same as the background color if <WDPic variable>.Pen has not been used.

Remarks

Coordinates

Coordinates are specified with respect to the upper-left corner of the image (coordinates: (0.0)).

Related Examples:

Unit examples (WINDEV): The drawing functions

[ + ] Using the main drawing functions of WINDEV to:
- Initialize an Image control for drawing
- Draw simple shapes
- Write a text into a drawing
- Change the color in a drawing

Business / UI classification: Neutral code

Component: wd280pnt.dll