A3DETessellationLevelOfDetail

enum A3DETessellationLevelOfDetail

Structure to specify the level of detail of the tessellation.

See A3DRWParamsTessellationData parameters. When a level is given, the Chord Height Ratio (A3DRWParamsTessellationData::m_dChordHeightRatio) and Wireframe Chord Angle (A3DRWParamsTessellationData::m_dAngleToleranceDeg) change to preset values for the selected level.

3.0

Index

Enumerators

• kA3DTessLODExtraLow
• kA3DTessLODLow
• kA3DTessLODMedium
• kA3DTessLODHigh
• kA3DTessLODExtraHigh
• kA3DTessLODUserDefined
• deprecated_kA3DTessLODControlledPrecision

Enumerators

enumerator kA3DTessLODExtraLow

kA3DTessLODExtraLow

Extra Low level: when selected, these members are automatically defined with the following values:

• A3DRWParamsTessellationData::m_dChordHeightRatio = 50,
• A3DRWParamsTessellationData::m_dAngleToleranceDeg = 40.

enumerator kA3DTessLODLow

kA3DTessLODLow

Low level: when selected, these members are automatically defined with the following values:

• A3DRWParamsTessellationData::m_dChordHeightRatio = 600,
• A3DRWParamsTessellationData::m_dAngleToleranceDeg = 40.

enumerator kA3DTessLODMedium

kA3DTessLODMedium

Medium level: when selected, these members are automatically defined with the following values:

• A3DRWParamsTessellationData::m_dChordHeightRatio = 2000,
• A3DRWParamsTessellationData::m_dAngleToleranceDeg = 40.

enumerator kA3DTessLODHigh

kA3DTessLODHigh

High level: when selected, these members are automatically defined with the following values:

• A3DRWParamsTessellationData::m_dChordHeightRatio = 5000,
• A3DRWParamsTessellationData::m_dAngleToleranceDeg = 30.

enumerator kA3DTessLODExtraHigh

kA3DTessLODExtraHigh

Extra High level: when selected, these members are automatically defined with the following values:

• A3DRWParamsTessellationData::m_dChordHeightRatio = 10000,
• A3DRWParamsTessellationData::m_dAngleToleranceDeg = 20.

enumerator kA3DTessLODUserDefined

kA3DTessLODUserDefined

User Defined level: when selected, these members should be defined:

• A3DRWParamsTessellationData::m_dChordHeightRatio if A3DRWParamsTessellationData::m_bUseHeightInsteadOfRatio is set to false,
• A3DRWParamsTessellationData::m_dMaxChordHeight if A3DRWParamsTessellationData::m_bUseHeightInsteadOfRatio is set to true,
• A3DRWParamsTessellationData::m_dAngleToleranceDeg. Be very careful when using A3DRWParamsTessellationData::m_dMaxChordHeight because a too small value would generate a huge tessellation.

enumerator deprecated_kA3DTessLODControlledPrecision

deprecated

deprecated_kA3DTessLODControlledPrecision

Controlled Precision level: when selected, these members should be defined:

• A3DRWParamsTessellationData::m_dAngleToleranceDeg,
• A3DRWParamsTessellationData::m_dMaxChordHeight,
• A3DRWParamsTessellationData::deprecated_m_dMinimalTriangleAngleDeg.

Warning

This is a deprecated feature, which will be removed in version 2026.1.0.