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- Coordinates
- Drawing with opacity or anti-aliasing
- Drawing in PHP
- Drawing in Browser code
<Image variable>.DrawPolygon (Function) In french: <Variable Image>.DessinePolygone Draws a polygon in an Image variable.
MyImage is Image = "Test.gif"
MyImage.DrawPolygon(4, 10, 20, 20, 50, 40, 60, 50, 10, LightYellow, LightBlue)
IMG_MyDrawing = MyImage
Syntax
Building a polygon point by point Hide the details
<Image variable>.DrawPolygon(<Number of sides> , <X1> , <Y1> , <X2> , <Y2> [, <X3> , <Y3> [... [, <Xn> , <Yn>]]] [, <Background color> [, <Side color>]])
<Image variable>: Image variable Name of the Image variable to be used. <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
<Image variable>.DrawPolygon(<Array of coordinates> [, <Background color> [, <Side color>]])
Remarks Coordinates Drawing a polygon:
MyImage.DrawPolygon(5, 80, 10, 10, 150, 100, 200, 160, 80, 140, 40)
Coordinates are specified with respect to the upper-left corner of the image (coordinates: (0.0)). Important: It's not necessary to close the polygon (the coordinates of the last point don't have to be equal to the coordinates of the first point).. The polygon is automatically "closed". Limits: a polygon can have a maximum of 100,000 points in WINDEV, WEBDEV and Java, and 1,000 points in Windows CE.
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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