Difference between revisions of "OpenIGTLink/ProtocolV2/Type/PolyData"
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| align="left" | Actual attribute data | | align="left" | Actual attribute data | ||
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| align="left" | ATTRIBUTE1 | | align="left" | ATTRIBUTE1 | ||
| − | | align="left" | SIZE_ATTRIBUTE0 * (number of components) * ( | + | | align="left" | SIZE_ATTRIBUTE0 * (number of components) * (double) |
| align="left" | Actual attribute data | | align="left" | Actual attribute data | ||
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| align="left" | ATTRIBUTE(NATTRIBUTES-1) | | align="left" | ATTRIBUTE(NATTRIBUTES-1) | ||
| − | | align="left" | SIZE_ATTRIBUTE(NATTRIBUTES-1) * (number of components) * ( | + | | align="left" | SIZE_ATTRIBUTE(NATTRIBUTES-1) * (number of components) * (double) |
| align="left" | Actual attribute data | | align="left" | Actual attribute data | ||
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Revision as of 04:51, 5 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) |
| SIZE_ATTRIBUTE1 | uint32 | Number of data for attribute 0 |
| TYPE_ATTRIBUTE1 | uint16 | Type of dataset attribute 1 (including number of components for scalar type) |
| 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) |
| SIZE_ATTRIBUTE(NATTRIBUTES-1) | uint32 | Number of data for attribute2 |
| NAME_ATTRIBUTE0 | char * (name length) | Name of attribute 0 |
| (null) | char | (null) |
| NAME_ATTRIBUTE1 | char * (name length) | Name of attribute 1 |
| (null) | char | (null) |
| ... | ... | ... |
| NAME_ATTRIBUTE(NATTRIBUTES-1) | char * (name length) | Name of attribute (NATTRIBUTES-1) |
| (null) | char | (null) |
| (Padding) | char or 0 | Padding (inserted if (NAMESIZE_ATTRIBUTE0+1+NAMESIZE_ATTRIBUTE1+1+...NAMESIZE_ATTRIBUTE(NATTRIBUTES-1)+1) % 2 == 1) |
| ATTRIBUTE0 | SIZE_ATTRIBUTE0 * (number of components) * (double) | Actual attribute data |
| ATTRIBUTE1 | SIZE_ATTRIBUTE0 * (number of components) * (double) | Actual attribute data |
| ... | ... | ... |
| ATTRIBUTE(NATTRIBUTES-1) | SIZE_ATTRIBUTE(NATTRIBUTES-1) * (number of components) * (double) | Actual attribute data |
2/17 change the order of the field to make implementation easier
- Values for TYPE_ATTRIBUTE (16-bit)
- 0-7 bit: Attribute Type:
- 0: Scalars
- 1: Vectors
- 2: Normals
- 3: Tensors
- 8-15 bit: Number of components -- ingnored if attribute type is not "Scalars".
- 0-7 bit: Attribute Type:
- Maximum length for attribute name is 255
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
