VLength

See also: VDistance

Description

VLength computes the length of the provided vector as the square root of the sum of the squares of its components. It works on input dimensions 1-4. In the 1D case it returns the absolute value of the input.

Supported Rates: frame, shape, pixel

Class Methods

VLength.fr(v)

VLength.sr(v)

VLength.pr(v)

Make a VLength VGen at requested rate.

Arguments

v

The input vector.

Returns:

The length of the vector.

dimensions

Examples

(
// This demo shows a graph of the magnetic flux density around a
// dipole magnet pointing along the y axis. It is a 3D radial
// function and uses the Length operator to compute the radius
// at each pixel, which is an input to the function (see
// https://en.wikipedia.org/wiki/Magnetic_dipole), as well as
// the magnitude of the magnetic flux vector at each point,
// to generate the black and white image.
~k = ScinthDef.new(\k, {
    var pos = VNormPos.pr;
    var r = VVec3.pr(VX.pr(pos), VY.pr(pos), 0.0);
    var magR = VLength.pr(r);
    var m = VVec3.pr(0.0, 0.1, 0.0);
    var flux = VCross.pr(m, r) / magR.cubed;
    VBWOut.pr(VClamp.pr(VLength.pr(flux), 0.0, 1.0));
}).add;
)

(
~t = Scinth.new(\k);
)