OpenIGTLink/ProtocolV2/Type/PolyData

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Summary

POLYDATA is used to transfer 3D polygonal data. The message format is designed based on the POLY DATA format defined in VTK file format and equivalent to VTK's vtkPolyData class.

Message Types

POLYDATA

Data	Type	Description
NPOINTS	uint32	Number of points
PTYPE	uint16	Data type (see image)
POINTS	PTYPE * NPOINTS * 3	Coordinates of points (P0x, P0y, P0z, P1x, P1y, P1z, ... P(n-1)x, P(n-1)y, P(n-1)z
NVERTICES	uint32	Number of vertices
VERTICES	uint32 * ((NPOINTS_0+1) + (NPOINTS_1+1) + (NPOINTS_(N-1)+1))	array of vertices ((NPOINTS_0, index_0_0, index_0_1, ....), (NPOINTS_1, index_1_0, index_1_1, ....), ..., (NPOINTS_(N-1), index_(N-1)_0, index_(N-1)_1, ....))
NLINES	uint32	Number of lines
LINES	uint32 * ((NPOINTS_0+1) + (NPOINTS_1+1) + (NPOINTS_(N-1)+1))	array of vertices ((NPOINTS_0, index_0_0, index_0_1, ....), (NPOINTS_1, index_1_0, index_1_1, ....), ..., (NPOINTS_(N-1), index_(N-1)_0, index_(N-1)_1, ....))
NPOLYGONS	uint32	Number of lines
POLYGONS	uint32 * ((NPOINTS_0+1) + (NPOINTS_1+1) + (NPOINTS_(N-1)+1))	array of vertices ((NPOINTS_0, index_0_0, index_0_1, ....), (NPOINTS_1, index_1_0, index_1_1, ....), ..., (NPOINTS_(N-1), index_(N-1)_0, index_(N-1)_1, ....))
NTRIANGLE_STRIPS	uint32	Number of lines
TRIANGLE_STRIPS	uint32 * ((NPOINTS_0+1) + (NPOINTS_1+1) + (NPOINTS_(N-1)+1))	array of vertices ((NPOINTS_0, index_0_0, index_0_1, ....), (NPOINTS_1, index_1_0, index_1_1, ....), ..., (NPOINTS_(N-1), index_(N-1)_0, index_(N-1)_1, ....))

GET_POLYDATA

Data

Type

Description

STT_POLYDATA

Data

Type

Description

STP_POLYDATA

Data

Type

Description

Implementations

The NDARRAY message type is implemented in the following source code.

Contributors

Junichi Tokuda