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- Coordinates
- Non-solid figure
- Drawing with opacity or anti-aliasing
- Using the drawing functions
dSlice (Function) In french: dPortion Draws a circle section or an ellipse section: - in an Image control,
- in a variable of type Image.
dStartDrawing(IMG_Dessin)
dSlice(10, 10, 50, 50, 20, 20, 40, 50, LightYellow, LightBlue)
Syntax
Draw a section of a circle, specifying all the coordinates of the rectangle containing the circle. Hide the details
dSlice([<Image>, ] <X1> , <Y1> , <X2> , <Y2> , <X3> , <Y3> , <X4> , <Y4> [, <Background color> [, <Line color>]])
<Image>: Optional control name or optional Image, WDPic or picLayer variable
<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: - is Transparent if dBackground has not been used beforehand,
- corresponds to the color specified in the last call to dBackground.
<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: - is Transparent if the function dPen has not been used before.
New in version 2024In the case of an Variable type Image, the row will have the black Color.. - corresponds to the color specified in the last call to dPen.
New in version 2024 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 or Image control (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 dChord.
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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