Entities

entities/helix

#include "dxfio/entities/helix.hpp"

In DxfIO::Entities

struct Coil

The AcDbHelix subclass of a HELIX: the axis, radius and turns the coil follows.

Field	Type and default	Meaning
`Major`	`int`	The major version of the helix's layout. Group 90.
`Minor`	`int`	The minor version of the helix's layout. Group 91.
`Base`	`Vector`	The base point of the axis, in world coordinates. Groups 10, 20, 30.
`Start`	`Vector`	The point the helix starts at, in world coordinates. Groups 11, 21, 31.
`Axis`	`Vector{Up}`	The direction of the axis. Groups 12, 22, 32.
`Radius`	`double{1}`	The radius, in drawing units. Group 40.
`Turns`	`double{1}`	The number of turns. Group 41.
`Rise`	`double{1}`	The height of one turn. Group 42.
`Right`	`bool{true}`	Whether the helix turns right-handed. Group 290.
`Constraint`	`int`	What is kept when the helix is edited: 0 the height of a turn, 1 the turns, 2 the height. Group 280.

A HELIX: a spiral in 3D, kept both as a spline and as its axis and turns.

Field	Type	Meaning
`Record`	`Entities::Record`	The layer, linetype, color and the rest every entity carries.
`Picture`	`std::string`	The proxy graphics, for programs that cannot draw the entity. Group 92, or 160 from R2010, then 310.
`Curve`	`Boxed<Entities::Curve>`	The spline that draws the helix, from the AcDbSpline subclass.
`Coil`	`Entities::Coil`	The axis, radius and turns, from the AcDbHelix subclass.