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  • Drawing with opacity or anti-aliasing
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Stored procedures
Draws a polygon in an WDPic variable.
Versions 15 and later
WEBDEV - Server code This function is now available for WEBDEV sites in Linux.
New in version 15
WEBDEV - Server code This function is now available for WEBDEV sites in Linux.
WEBDEV - Server code This function is now available for WEBDEV sites in Linux.
Example
MyWDPicImage is WDPic = "Test.gif"
// Draw a 4-side polygon whose
// background is light yellow and whose border is light blue
MyWDPicImage.DrawPolygon(4, 10, 20, 20, 50, 40, 60, 50, 10, LightYellow, LightBlue)
IMG_MyDrawing = MyWDPicImage
Syntax

Building a polygon point by point Hide the details

<WDPic image>.DrawPolygon(<Number of sides> , <X1> , <Y1> , <X2> , <Y2> [, <X3> , <Y3> [... [, <Xn> , <Yn>]]] [, <Background color> [, <Side color>]])
<WDPic image>: WDPic variable
Name of the WDPic variable to use. Only the background layer will be handled.
<Number of sides>: Integer
Number of sides in the polygon (up to 23 sides). This parameter defines the number of <X>, <Y> pairs to specify in the function.
<X1>: Integer
X coordinate of first point of the polygon. These coordinates are expressed in pixels.
<Y1>: Integer
Y coordinate of first point of the polygon. These coordinates are expressed in pixels.
<X2>: Integer
X coordinate of second point of the polygon. These coordinates are expressed in pixels.
<Y2>: Integer
Y coordinate of second point of the polygon. These coordinates are expressed in pixels.
<X3>: Integer
X coordinate of 3rd point of the polygon. These coordinates are expressed in pixels.
<Y3>: Integer
Y coordinate of 3rd point of the polygon. These coordinates are expressed in pixels.
<Xn>: Optional integer
X coordinate of nth point of the polygon. These coordinates are expressed in pixels.
<Yn>: Optional integer
Y coordinate of nth point of the polygon. These coordinates are expressed in pixels.
<Background color>: Integer or constant (optional)
Polygon background color. This color can correspond to:
If this parameter is not specified, the background color:
<Side color>: Integer or constant (optional)
Color of polygon sides. This color can correspond to:
If this parameter is not specified, the line color:

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

<WDPic image>.DrawPolygon(<Array of coordinates> [, <Background color> [, <Side color>]])
<WDPic image>: WDPic variable
Name of the Variable type WDPic to handle. 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 polygon points. The even subscript represent the X coordinates while the odd subscripts represent the Y coordinates of points. These coordinates are expressed in pixels.
  • WINDEVWEBDEV - Server code WLanguage array of Point variables containing the coordinates of polygon points. These coordinates are expressed in pixels.
<Background color>: Integer or constant (optional)
Polygon background color. This color can correspond to:If this parameter is not specified, the background color:
<Side color>: Integer or constant (optional)
Color of polygon sides. This color can correspond to:If this parameter is not specified, the line color:
Versions 26 and later
Reports and QueriesWindowsUser code (UMC)

Construction of a polygon from an Variable of the Polygon type Hide the details

<WDPic image>.DrawPolygon(<Polygon> [, <Background color> [, <Side color>]])
<WDPic image>: WDPic variable
Name of the Variable type WDPic to handle. Only the background layer will be handled.
<Polygon>: Variable type Polygon
Name of the variable of type Polygon describing the different points of the Polygon.
<Background color>: Integer or constant (optional)
Polygon background color. This color can correspond to:If this parameter is not specified, the background color:
<Side color>: Integer or constant (optional)
Color of polygon sides. This color can correspond to:If this parameter is not specified, the line color:
New in version 26
Reports and QueriesWindowsUser code (UMC)

Construction of a polygon from an Variable of the Polygon type Hide the details

<WDPic image>.DrawPolygon(<Polygon> [, <Background color> [, <Side color>]])
<WDPic image>: WDPic variable
Name of the Variable type WDPic to handle. Only the background layer will be handled.
<Polygon>: Variable type Polygon
Name of the variable of type Polygon describing the different points of the Polygon.
<Background color>: Integer or constant (optional)
Polygon background color. This color can correspond to:If this parameter is not specified, the background color:
<Side color>: Integer or constant (optional)
Color of polygon sides. This color can correspond to:If this parameter is not specified, the line color:
Reports and QueriesWindowsUser code (UMC)

Construction of a polygon from an Variable of the Polygon type Hide the details

<WDPic image>.DrawPolygon(<Polygon> [, <Background color> [, <Side color>]])
<WDPic image>: WDPic variable
Name of the Variable type WDPic to handle. Only the background layer will be handled.
<Polygon>: Variable type Polygon
Name of the variable of type Polygon describing the different points of the Polygon.
<Background color>: Integer or constant (optional)
Polygon background color. This color can correspond to:If this parameter is not specified, the background color:
<Side color>: Integer or constant (optional)
Color of polygon sides. This color can correspond to:If this parameter is not specified, the line color:
Remarks

Coordinates

Drawing a polygon:
MyImage is WDPic
MyImage.DrawPolygon(5, 80, 10, 10, 150, 100, 200, 160, 80, 140, 40)
Drawing a polygon
Coordinates are given with respect to the top left corner of the image (coordinates: (0.0)).
Important: There is no need to close the polygon (the coordinates of last point do not have to be equal to the coordinates of first point). The polygon is automatically "closed".
Limits: a polygon can contain up to 100 000 points in WINDEV, WEBDEV and Java, and up to 1000 points in Windows CE.
WINDEVWEBDEV - Server codeReports and QueriesWindowsUser code (UMC)Ajax

Drawing with opacity or anti-aliasing

In the case of a drawing with opacity (function <WDPic variable>.StartDrawing with the constant dWithOpacity) or anti-aliasing (function <WDPic variable>.ChangeMode with the constant drawAntiAliasing), the contour is drawn over the inside of the Polygon: therefore, the line is partly combined with the inside of the polygon. If the line is very thick, it will be displayed in two colors.
Related Examples:
The drawing functions 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: wd260pnt.dll
Minimum version required
  • Version 25
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