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New WINDEV, WEBDEV, WINDEV Mobile 24 feature!
  • Coordinates
  • Non-solid figure
  • Drawing with opacity or anti-aliasing
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Stored procedures
Draws a slice of a circle or an ellipse in an Image variable.
Example
MyImage is Image = "Test.gif"
// Draw a circle section whose
// background is light yellow and whose border is light blue
MyImage.DrawSlice(10, 10, 50, 50, 20, 20, 40, 50, LightYellow, LightBlue)
IMG_MyDrawing = MyImage
Syntax
<Image variable>.DrawSlice(<X1> , <Y1> , <X2> , <Y2> , <X3> , <Y3> , <X4> , <Y4> [, <Background color> [, <Line color>]])
<Image variable>: Image variable
Name of Image variable to use.
<X1>: Integer
X coordinate of top left corner of the rectangle containing the circle. These coordinates are expressed in pixels.
<Y1>: Integer
Y coordinate of top left corner of the rectangle containing the circle. These coordinates are expressed in pixels.
<X2>: Integer
X coordinate of bottom right corner of the rectangle containing the circle. These coordinates are expressed in pixels.
<Y2>: Integer
Y coordinate of bottom right corner of the rectangle containing the circle. These coordinates are expressed in pixels.
<X3>: Integer
X coordinate of start point of the circle section. These coordinates are expressed in pixels.
<Y3>: Integer
Y coordinate of start point of the circle section. These coordinates are expressed in pixels.
<X4>: Integer
X coordinate of end point of the circle section. These coordinates are expressed in pixels.
<Y4>: Integer
Y coordinate of end point of the circle section. These coordinates are expressed in pixels.
<Background color>: Integer or constant (optional)
Background color of circle section. This color corresponds to:
If this parameter is not specified, the background color:
<Line color>: Integer or constant (optional)
Color of the line for the circle section. This color corresponds to:
If this parameter is not specified, the line color:
  • corresponds to the color specified during the last call to <Image>.Pen,
  • is identical to the color used for the background if <Image>.Pen was not used.
Remarks

Coordinates

If the start point and the end point are not located on the circle border (or on the ellipse border), the point taken into account corresponds to the intersection between the circle and the line that joins the specified point and the center of the rectangle (which means the center of the circle).
The coordinates are specified in relation to the top left corner of Image control (coordinates set to (0,0)).
The drawing sections are drawn anticlockwise.

Non-solid figure

To draw a non-solid figure, use <Image>.DrawChord.
WINDEVWEBDEV - Server codeReports and QueriesWindowsiPhone/iPadAjaxUser code (UMC)

Drawing with opacity or anti-aliasing

For a drawing with opacity (<Image>.StartDrawing with the constant dWithOpacity) or anti-aliasing (<Image>.ChangeMode with the constantdrawAntiAliasing), the border is drawn on top of the inside of the section: therefore, the line is partly combined with the inside of the section. If the line thickness is quite big, the line 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
Component : wd240pnt.dll
Minimum required version
  • Version 24
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