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- Coordinates
- Drawing in PHP
- Drawing in Browser code
<Image>.DrawPolyline (Function) In french: <Image>.DessinePolyligne Draws a line composed of multiple segments in an Image control.
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. IMG_Drawing.Pen(LightBlue, 2, 4)
arrCoordinatesXY2 is array of 0 int = [2, 2, 140, 2, 150, 70, 0, 100, 200,100]
IMG_Drawing.DrawPolyline(arrCoordinatesXY2)
Syntax
Building a line point by point Hide the details
<Image control>.DrawPolyline(<NbPoint> , <X1> , <Y1> , <X2> , <Y2> [, <Xn> [, <Yn> [, <Line color>]]])
<Image control>: Control name Name of the Image control to be used. <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:If this parameter is not specified, the line color:- is Transparent if <Image>.Pen has not been previously used.
For a variable of type Image, the line will be black. - corresponds to the color specified in the last call to <Image>.Pen.
Building a line via an array of X and Y-coordinates Hide the details
<Image control>.DrawPolyline(<Array of coordinates> [, <Line color>])
<Image control>: Control name Name of the Image control to be used. <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:If this parameter is not specified, the line color:- is Transparent if <Image>.Pen has not been previously used.
For a variable of type Image, the line will be black. - corresponds to the color specified in the last call to <Image>.Pen.
Remarks Coordinates Coordinates are specified with respect to the upper-left corner of the image (coordinates: (0.0)).
Related Examples:
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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
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Business / UI classification: Neutral code
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