Difference between revisions of "OpenIGTLink/ProtocolV2/Type/PolyData"
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<font color="red">2/17 change the order of the field to make implementation easier</font> | <font color="red">2/17 change the order of the field to make implementation easier</font> | ||
| − | + | *Values for TYPE_ATTRIBUTE (16-bit) | |
| − | * 0-7 bit: Data type: | + | ** 0-7 bit: Data type: |
| − | **0: Field | + | ***0: Field |
| − | **1: Vectors | + | ***1: Vectors |
| − | **2: Normals | + | ***2: Normals |
| − | **3: Tensors | + | ***3: Tensors |
| − | *8-15 bit: Number of components | + | **8-15 bit: Number of components |
==GET_POLYDATA== | ==GET_POLYDATA== | ||
Revision as of 04:07, 3 August 2011
Home < OpenIGTLink < ProtocolV2 < Type < PolyDataContents
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. The message also supports dataset attribute field in VTK, including scalars, calar_scalars, vectors, vectors, normals, texture coordinates and tensor, but not lookup table.
Message Types
POLYDATA
| Data | Type | Description |
| NPOINTS | uint32 | Number of points |
| PTYPE | uint8 | Data type (see image) |
| (Reserved) | uint8 | -- |
| NVERTICES | uint32 | Number of vertices |
| SIZE_VERTICES | uint32 | Total size of vertices data |
| NLINES | uint32 | Number of lines |
| SIZE_LINES | uint32 | Total size of line data |
| NPOLYGONS | uint32 | Number of polygons |
| SIZE_POLYGONS | uint32 | Total size of polygon data |
| NTRIANGLE_STRIPS | uint32 | Number of triangle strips |
| SIZE_TRIANGLE_STRIPS | uint32 | Total size of triangle strips data |
| NATTRIBUTES | uint32 | Number of dataset attributes |
| 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 |
| 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, ....)) |
| 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, ....)) |
| 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, ....)) |
| 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, ....)) |
| TYPE_ATTRIBUTE0 | uint16 | Type of dataset attribute 0 (including number of components for scalar type) |
| NAMESIZE_ATTRIBUTE0 | uint16 | Length of name for attribute 0 |
| SIZE_ATTRIBUTE1 | uint32 | Number of data for attribute 0 |
| TYPE_ATTRIBUTE1 | uint16 | Type of dataset attribute 1 (including number of components for scalar type) |
| NAMESIZE_ATTRIBUTE1 | uint16 | Length of name for attribute 1 |
| SIZE_ATTRIBUTE1 | uint32 | Number of data for attribute1 |
| ... | ... | ... |
| TYPE_ATTRIBUTE(NATTRIBUTES-1) | uint16 | Type of dataset attribute 1 (including number of components for scalar type) |
| NAMESIZE_ATTRIBUTE(NATTRIBUTES-1) | uint16 | Length of name for attribute 2 |
| SIZE_ATTRIBUTE(NATTRIBUTES-1) | uint32 | Number of data for attribute2 |
| NAME_ATTRIBUTE0 | char * NAMESIZE_ATTRIBUTE0 | Name of attribute 0 |
| NAME_ATTRIBUTE1 | char * NAMESIZE_ATTRIBUTE1 | Name of attribute 1 |
| ... | ... | ... |
| NAME_ATTRIBUTE(NATTRIBUTES-1) | char * NAMESIZE_ATTRIBUTE(NATTRIBUTES-1) | Name of attribute (NATTRIBUTES-1) |
| (Padding) | char or 0 | Padding (inserted if NAMESIZE_ATTRIBUTE0+NAMESIZE_ATTRIBUTE1+...NAMESIZE_ATTRIBUTE(NATTRIBUTES-1) % 2 == 1) |
| ATTRIBUTE0 | SIZE_ATTRIBUTE0 * (number of components) * (data size) | Actual attribute data |
| ATTRIBUTE1 | SIZE_ATTRIBUTE0 * (number of components) * (data size) | Actual attribute data |
| ... | ... | ... |
| ATTRIBUTE(NATTRIBUTES-1) | SIZE_ATTRIBUTE(NATTRIBUTES-1) * (number of components) * (data size) | Actual attribute data |
2/17 change the order of the field to make implementation easier
- Values for TYPE_ATTRIBUTE (16-bit)
- 0-7 bit: Data type:
- 0: Field
- 1: Vectors
- 2: Normals
- 3: Tensors
- 8-15 bit: Number of components
- 0-7 bit: Data type:
GET_POLYDATA
| Data | Type | Description |
STT_POLYDATA
| Data | Type | Description |
| Data | Type | Description |
| RESOL | uint64 | Minimum interval between message (ns). Same format as TimeStamp |
STP_POLYDATA
| Data | Type | Description |
RTS_POLYDATA
| Data | Type | Description |
| Status | 8 bit unsigned | 0: Success 1: Error |
Implementations
The NDARRAY message type is implemented in the following source code.
Contributors
Junichi Tokuda
