Helix¶
The HELIX entity (DXF Reference).
The helix curve is represented by a cubic B-spline curve, therefore the HELIX entity is also derived from the SPLINE entity.
See also
- Wikipedia article about the helix shape
| Subclass of | ezdxf.entities.Spline |
| DXF type | 'HELIX' |
| Factory function | ezdxf.layouts.BaseLayout.add_helix() |
| Inherited DXF attributes | Common graphical DXF attributes |
| Required DXF version | DXF R2000 ('AC1015') |
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class
ezdxf.entities.Helix¶ All points in WCS as (x, y, z) tuples
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dxf.axis_base_point¶ The base point of the helix axis (Vec3).
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dxf.start_point¶ The starting point of the helix curve (Vec3). This also defines the base radius as the distance from the start point to the axis base point.
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dxf.axis_vector¶ Defines the direction of the helix axis (Vec3).
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dxf.radius¶ Defines the top radius of the helix (float).
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dxf.turn_height¶ Defines the pitch (height if one helix turn) of the helix (float).
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dxf.turns¶ The count of helix turns (float).
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dxf.handedness¶ Helix orientation (int).
0 clock wise (left handed) 1 counter clockwise (right handed)
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dxf.constrain¶ 0 constrain turn height (pitch) 1 constrain count of turns 2 constrain total height
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