A3DRWParamsExportStlData

struct A3DRWParamsExportStlData

A structure that specifies parameters used to write the model file to STL format.

10.2

Variables

A3DBool A3DRWParamsExportStlData.m_bBinaryFile
A3DBool

With a value of TRUE, compresses the STL file to reduce file size.

A3DETessellationLevelOfDetail A3DRWParamsExportStlData.m_eTessellationLevelOfDetail
A3DETessellationLevelOfDetail

Enum to specify predefined values for some following members.

A3DDouble A3DRWParamsExportStlData.m_dChordHeightRatio
A3DDouble

Specifies the ratio of the diagonal length of the bounding box to the chord height.

A value of 50 means that the diagonal of the bounding box is 50 times greater than the chord height. Values can range from 50 to 10,000. Higher values will generate more accurate tessellation.

A3DDouble A3DRWParamsExportStlData.m_dAngleToleranceDeg
A3DDouble

Specifies the maximum angle between two contiguous segments of wire edges for every face.

The value must be from 10 through 40.

A3DDouble A3DRWParamsExportStlData.m_dMinimalTriangleAngleDeg
A3DDouble

Specifies the angle between two contiguous segments of wire edges for every face.

Allowable values range from 10 through 30.

A3DDouble A3DRWParamsExportStlData.m_dMaxChordHeight
A3DDouble

Specifies the maximum distance between the original geometric surface specified in the CAD file and the resulting tessellation.

m_dMaxChordHeight is ignored if m_bUseHeightInsteadOfRatio isn’t set to true.

Be careful, very small values can generate very large tessellation files.

Conversely, very large values can generate inaccurate tessellation. In such cases, it may be better to use the m_dChordHeightRatio member to scale this value relative to the object that’s being tessellated.
A3DBool A3DRWParamsExportStlData.m_bAccurateTessellation
A3DBool

Accurate tessellation.

Uses standard parameters. ‘false’ indicates the tessellation is set for visualization. Setting this value to ‘true’ will generate tessellation more suited for analysis. Can be used with all TessellationLevelOfDetails.

A3DBool A3DRWParamsExportStlData.m_bAccurateTessellationWithGrid
A3DBool

Accurate tessellation with faces inner points on a grid.

A3DDouble A3DRWParamsExportStlData.m_dAccurateTessellationWithGridMaximumStitchLength
A3DDouble

Maximal grid stitch length.

Disabled if value is 0. Be careful, a too small value can generate a huge tessellation.

A3DBool A3DRWParamsExportStlData.m_bAccurateSurfaceCurvatures
A3DBool

Take into account surfaces curvature in accurate tessellation to controle triangles elongation directions.

Enable m_bAccurateTessellation or m_bAccurateTessellationWithGrid to use this option.

A3DBool A3DRWParamsExportStlData.m_bKeepCurrentTessellation
A3DBool

With a value of TRUE, keeps the current tessellation.

A3DBool A3DRWParamsExportStlData.m_bUseHeightInsteadOfRatio
A3DBool

Use m_dMaxChordHeight instead of m_dChordHeightRatio if m_eTessellationLevelOfDetail = kA3DTessLODUserDefined.

A3DDouble A3DRWParamsExportStlData.m_dMaximalTriangleEdgeLength
A3DDouble

Maximal length of the edges of triangles.

Disabled if value is 0. Be careful, a too small value can generate a huge tessellation.

A3DEUnits A3DRWParamsExportStlData.m_eExportUnit
A3DEUnits

Unit of the exported model.

STL files have no unit however this value allow you to define it. This scales the model to match the target unit. Default value is set to kA3DUnitMillimeter. Setting to kA3DUnitUnknown keeps the original unit.