• Coordinates
• Non-solid figure
• Drawing with opacity or anti-aliasing
WINDEV
WEBDEV
WINDEV Mobile
Others
Draws a section of a circle or an ellipse in a variable of type WDPic (on the background layer).
Example
MyWDPicImage is WDPic = "Test.gif"
// Draw a circle section whose
// background is light yellow and whose border is light blue
MyWDPicImage.DrawSlice(10, 10, 50, 50, 20, 20, 40, 50, LightYellow, LightBlue)
IMG_MyDrawing = MyWDPicImage
Syntax
<WDPic image>.DrawSlice(<X1> , <Y1> , <X2> , <Y2> , <X3> , <Y3> , <X4> , <Y4> [, <Background color> [, <Line color>]])
<WDPic image>: WDPic variable
Name of the WDPic variable to be used. Only the background layer will be handled.
<X1>: Integer
X-coordinate of the upper-left corner of the rectangle containing the circle. These coordinates are expressed in pixels.
<Y1>: Integer
Y-coordinate of the upper-left corner of the rectangle containing the circle. These coordinates are expressed in pixels.
<X2>: Integer
X-coordinate of the lower-right corner of the rectangle containing the circle. These coordinates are expressed in pixels.
<Y2>: Integer
Y-coordinate of the lower-right corner of the rectangle containing the circle. These coordinates are expressed in pixels.
<X3>: Integer
X-coordinate of the start point of the circle section. These coordinates are expressed in pixels.
<Y3>: Integer
Y-coordinate of the start point of the circle section. These coordinates are expressed in pixels.
<X4>: Integer
X-coordinate of the end point of the circle section. These coordinates are expressed in pixels.
<Y4>: Integer
Y-coordinate of the end point of the circle section. These coordinates are expressed in pixels.
<Background color>: Integer or constant (optional)
Background color of the circle section. This color can correspond 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 can correspond to:
If this parameter is not specified, the line color:
Remarks

Coordinates

If the start point and the end point are not located on the border of the circle (or on the border of the ellipse), 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).
Coordinates are specified with respect to the upper-left corner of the image (coordinates: (0.0)).
The drawing sections are drawn anticlockwise.

Non-solid figure

To draw a non-solid figure (without taking into account the center of the circle), use <WDPic variable>.DrawChord.

Drawing with opacity or anti-aliasing

For a drawing with opacity (<WDPic variable>.StartDrawing with the dWithOpacity constant) or anti-aliasing (<WDPic variable>.ChangeMode with the drawAntiAliasing constant), the outline is drawn inside the section: therefore, the line is partly combined with the inside of the section. If the line is very thick, it will be displayed in two colors.
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: wd270pnt.dll
Minimum version required
• Version 25