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Stored procedures
Performs a rotation:
  • an Image control,
  • Versions 17 and later
    Reports and QueriesWindows in an Image variable.
    New in version 17
    Reports and QueriesWindows in an Image variable.
    Reports and QueriesWindows in an Image variable.
    in an Image variable.
Example
// Turn the IMG_Image1 control round by 45 degrees
Result1 is boolean
Result1 = dRotation(IMG_Image1, 45)
IF Result1 = False THEN Error("The operation failed")
Syntax

Performing a simple rotation Hide the details

<Result> = dRotation(<Image> , <Rotation angle> [, <Options>])
<Result>: Boolean
  • True if the rotation was performed,
  • False otherwise.
<Image>: Control name, Image variable or picLayer variable
Image to use. This image can correspond to:
  • the name of an Image control.
  • Versions 17 and later
    Reports and QueriesWindows the name of an Image variable.
    New in version 17
    Reports and QueriesWindows the name of an Image variable.
    Reports and QueriesWindows the name of an Image variable.
    the name of an Image variable.
The rotation is performed in relation to the center of the image. The image is directly modified.
<Rotation angle>: Real
Rotation angle (in degrees).
  • If the angle is positive, the image rotates clockwise.
  • If the angle is negative, the image rotates anticlockwise.
<Options>: Integer constant
Versions 17 and later
Reports and QueriesWindows Rotation options:
drAdaptThe image is turned while it is enlarged. Then, its size is reduced to correspond to the initial image size.
drDefaultEnlarge the image (if necessary) so that it corresponds to the dimensions of rotated image.
Constant used by default for Image or picLayer variables.
drNoEnlargingThe image is turned but it is not enlarged: the image may be truncated.
Constant used by default for the Image controls.

New in version 17
Reports and QueriesWindows Rotation options:
drAdaptThe image is turned while it is enlarged. Then, its size is reduced to correspond to the initial image size.
drDefaultEnlarge the image (if necessary) so that it corresponds to the dimensions of rotated image.
Constant used by default for Image or picLayer variables.
drNoEnlargingThe image is turned but it is not enlarged: the image may be truncated.
Constant used by default for the Image controls.

Reports and QueriesWindows Rotation options:
drAdaptThe image is turned while it is enlarged. Then, its size is reduced to correspond to the initial image size.
drDefaultEnlarge the image (if necessary) so that it corresponds to the dimensions of rotated image.
Constant used by default for Image or picLayer variables.
drNoEnlargingThe image is turned but it is not enlarged: the image may be truncated.
Constant used by default for the Image controls.

Reports and QueriesWindows

Performing a rotation while modifying the rotation center Hide the details

<Result> = dRotation(<Image control> , <Rotation angle> , <X of rotation center> , <Y of rotation center> [, <Options>])
<Result>: Boolean
  • True if the rotation was performed,
  • False otherwise.
<Image control>: Control name
Name of Image control to use. The rotation is performed in relation to the center of the Image control. The image found in the Image control is modified.
<Rotation angle>: Real
Rotation angle (in degrees).
<X of rotation center>: Integer
X coordinate (in pixels) of the new rotation center.
<Y of rotation center>: Integer
Y coordinate (in pixels) of the new rotation center.
<Options>: Integer constant
Rotation options:
drDefaultEnlarge the image (if necessary) so that it corresponds to the dimensions of rotated image.
Constant used by default for Image or picLayer variables.
drNoEnlargingThe image is turned but it is not enlarged.
Constant used by default for the Image controls.

Remarks

End of drawing

The transformation of the image will not be displayed if dEndDrawing and dRotation are called in the same process.
Related Examples:
Image rotation Unit examples (WINDEV): Image rotation
[ + ] Image rotation from any point that will be used as rotation center.
Component : wd250pnt.dll
Minimum version required
  • Version 9
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