Object3D →

ArrowHelper

An 3D arrow object for visualizing directions.

Code Example


    const dir = new v3d.Vector3(1, 2, 0);

    // normalize the direction vector (convert to vector of length 1)
    dir.normalize();

    const origin = new v3d.Vector3(0, 0, 0);
    const length = 1;
    const hex = 0xffff00;

    const arrowHelper = new v3d.ArrowHelper(dir, origin, length, hex);
    app.scene.add(arrowHelper);

Constructor

ArrowHelper(dir : Vector3, origin : Vector3, length : Float, color : Color | Integer | String, headLength : Float, headWidth : Float)

dir — direction from origin. Must be a unit vector.
origin — Point at which the arrow starts.
length — length of the arrow. Default is 1.
color — hexadecimal value to define color. Default is 0xffff00 (yellow).
headLength — The length of the head of the arrow. Default is 0.2 * length.
headWidth — The width of the head of the arrow. Default is 0.2 * headLength.