Entities

entities/vertex

#include "dxfio/entities/vertex.hpp"

In DxfIO::Entities

struct VertexVERTEX

A VERTEX: a point of a POLYLINE, or a face of a polyface mesh.

Field	Type	Meaning
`Record`	`Entities::Record`	The layer, linetype, color and the rest every entity carries.
`Position`	`Vector`	The location: in the polyline's own coordinate system for a 2D polyline, in world coordinates otherwise. Groups 10, 20, 30.
`Start`	`std::optional<double>`	The width the segment from this vertex starts with, when it has its own. Group 40.
`End`	`std::optional<double>`	The width the segment from this vertex ends with, when it has its own. Group 41.
`Bulge`	`double`	The bulge of the segment to the next vertex: the tangent of a quarter of its arc's angle, 0 when straight. Group 42.
`Id`	`int`	The vertex identifier. Group 91, written from R2010 as AutoCAD writes it, or in the release the drawing came from; read from R13.
`Flags`	`int`	1 added by curve fitting, 2 has a curve-fit tangent, 8 added by spline fitting, 16 spline frame point, 32 of a 3D polyline, 64 of a polygon mesh, 128 of a polyface mesh. Group 70.
`Tangent`	`double`	The direction of the curve-fit tangent. Group 50.
`First`	`int`	The first vertex of a polyface mesh face, counted from 1; negative when the edge from it is invisible. Group 71.
`Second`	`int`	The second vertex of a polyface mesh face, counted the same way. Group 72.
`Third`	`int`	The third vertex of a polyface mesh face, counted the same way. Group 73.
`Fourth`	`int`	The fourth vertex of a polyface mesh face, counted the same way; 0 for a triangle. Group 74.