swplot.circle

Syntax

hPatch = swplot.circle(r0, n, R)

hPatch = swplot.circle(r0, n, R, nPatch)

hPatch = swplot.circle(handle, ...)

Description

hPatch = swplot.circle(r0, n, R) creates a triangulated patch of a surface of a circle in 3D, defined by the center position, normal vector and radius.

hPatch = swplot.circle(handle, ...) adds the patch object to a given axis if handle is an axis handle or adds the arrow to an existing patch object, if the given handle points to a patch object.

Examples

Draw 100 random unit circle surfaces with center at \((0,0,0)\) and random normal vector.

swplot.figure
N = 100
swplot.circle(zeros(3,N),2*rand(3,N)-1,1)
swplot.zoom(30)% 

{% include image.html file=”generated/swplot_c_1.png” alt=”swplot.zoom(30)%” %}

Input Arguments

handle

Handle of an axis or triangulated patch object. In case of patch object, the constructed faces will be added to the existing object.

r0

Center position of the circle in a column vector. Multiple circles can be defined using a matrix with dimensions of \([3\times n_{obj}]\) where each column defines a circle center.

n

Column vector with 3 elements, normal to the circle surface. Multiple circles can be defined using a matrix with the same dimensions as r0 parameter.

R

Radius of the circle, scalar or row vector with \(n_{obj}\) number of elements.

nPatch

Number of points on the circle circumference, default value is stored in swpref.getpref('npatch'). The generated patch will contain \(n_{patch}\) number of faces and vertices.

See Also

swplot.cylinder