Curve →

EllipseCurve

Creates a 2D curve in the shape of an ellipse. Setting the xRadius equal to the yRadius will result in a circle.

Code Example


    const curve = new v3d.EllipseCurve(
        0,  0,            // ax, aY
        10, 10,           // xRadius, yRadius
        0,  2 * Math.PI,  // aStartAngle, aEndAngle
        false,            // aClockwise
        0                 // aRotation
    );

    const points = curve.getPoints(50);
    const geometry = new v3d.BufferGeometry().setFromPoints(points);

    const material = new v3d.LineBasicMaterial({ color: 0xff0000 });

    // create the final object to add to the scene
    const ellipse = new v3d.Line(geometry, material);

Constructor

EllipseCurve(aX : Float, aY : Float, xRadius : Float, yRadius : Float, aStartAngle : Radians, aEndAngle : Radians, aClockwise : Boolean, aRotation : Radians)

aX – The X center of the ellipse. Default is 0.
aY – The Y center of the ellipse. Default is 0.
xRadius – The radius of the ellipse in the x direction. Default is 1.
yRadius – The radius of the ellipse in the y direction. Default is 1.
aStartAngle – The start angle of the curve in radians starting from the positive X axis. Default is 0.
aEndAngle – The end angle of the curve in radians starting from the positive X axis. Default is 2 x Math.PI.
aClockwise – Whether the ellipse is drawn clockwise. Default is false.
aRotation – The rotation angle of the ellipse in radians, counterclockwise from the positive X axis (optional). Default is 0.