helix¶
- helix(pos=vec(0, 0, 0), axis=vec(3, 0, 0), color=color.red)¶
- Parameters:
pos (vector) – Position of left end. Default <0,0,0>.
axis (vector) – Extends from pos to other end. Default <1,0,0>.
color (vector) – Default color.white.
radius (vector) – Radius of the helix. Default is 1.
thickness (scalar) – Diameter of the cross section of the curve. Default is radius/20
length (scalar) – Length of axis. Setting length sets magnitude of axis. Default is 1.
coils (scalar) – Number of coils. Default is 5.
size (vector) – Length, height, width of a box surrounding the cylinder. Default is <1,1,1>.
ccw (boolean) – If ccw is True the helix winds counterclockwise (default).
By setting size appropriately one can make the cross-section of the helix elliptical instead of circular.
Because a helix is constructed from a curve, it has the same limitations as curve: a helix cannot be compounded, cannot be transparent, and cannot have a texture.
Attributes used less often:
- helix(canvas=mycanvas, make_trail=True, emissive=False)
- Parameters:
shininess (scalar) – Default 0.6; Range 0-1.
emissive (boolean) – Default False. Object glows, losing all shading, if True.
visible (boolean) – If False, object is not displayed. Default: True
canvas (object) – Default is scene.
make_trail (boolean) – If True, object leaves a trail when moved. See Attaching a Trail for more options.
up (vector) – A vector perpendicular to the axis.