Function opencv::imgproc::ellipse_new_rotated_rect

pub fn ellipse_new_rotated_rect(
    img: &mut dyn ToInputOutputArray, 
    _box: &RotatedRect, 
    color: Scalar, 
    thickness: i32, 
    line_type: i32
) -> Result<()>

Draws a simple or thick elliptic arc or fills an ellipse sector.

The function cv::ellipse with more parameters draws an ellipse outline, a filled ellipse, an elliptic arc, or a filled ellipse sector. The drawing code uses general parametric form. A piecewise-linear curve is used to approximate the elliptic arc boundary. If you need more control of the ellipse rendering, you can retrieve the curve using #ellipse2Poly and then render it with #polylines or fill it with #fillPoly. If you use the first variant of the function and want to draw the whole ellipse, not an arc, pass startAngle=0 and endAngle=360. If startAngle is greater than endAngle, they are swapped. The figure below explains the meaning of the parameters to draw the blue arc.

Parameters

• img: Image.
• center: Center of the ellipse.
• axes: Half of the size of the ellipse main axes.
• angle: Ellipse rotation angle in degrees.
• startAngle: Starting angle of the elliptic arc in degrees.
• endAngle: Ending angle of the elliptic arc in degrees.
• color: Ellipse color.
• thickness: Thickness of the ellipse arc outline, if positive. Otherwise, this indicates that a filled ellipse sector is to be drawn.
• lineType: Type of the ellipse boundary. See #LineTypes
• shift: Number of fractional bits in the coordinates of the center and values of axes.

Overloaded parameters

• img: Image.
• box: Alternative ellipse representation via RotatedRect. This means that the function draws an ellipse inscribed in the rotated rectangle.
• color: Ellipse color.
• thickness: Thickness of the ellipse arc outline, if positive. Otherwise, this indicates that a filled ellipse sector is to be drawn.
• lineType: Type of the ellipse boundary. See #LineTypes

C++ default parameters

• thickness: 1
• line_type: LINE_8