返回实体的捕捉点信息，自定义实体重载该函数，返回捕捉信息
virtual Mcad::ErrorStatus getOsnapPoints(McDb::OsnapMode osnapMode, int gsSelectionMark, const McGePoint3d& pickPoint, const McGePoint3d& lastPoint, const McGeMatrix3d& viewXform, McGePoint3dArray& snapPoints, McDbIntArray& geomIds) const;
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参数 |
说明 |
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McDb::OsnapMode osnapMode |
捕捉类型 |
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int gsSelectionMark |
暂没有使用 |
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const McGePoint3d& pickPoint |
当前鼠标拾取点 |
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const McGePoint3d& lastPoint |
前一次的鼠标拾取点 |
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const McGeMatrix3d& viewXform |
暂没有使用 |
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McGePoint3dArray& snapPoints |
返回捕捉的点坐标数组 |
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McDbIntArray& geomIds |
暂没有使用 |
如果成功返回Mcad::eOk
例如:参考samplesCustomEntityCustomEntity.sln例程
Mcad::ErrorStatus CLinkBlock::getOsnapPoints(
McDb::OsnapMode osnapMode,
int gsSelectionMark,
const McGePoint3d& pickPoint,
const McGePoint3d& lastPoint,
const McGeMatrix3d& viewXform,
McGePoint3dArray& snapPoints,
McDbIntArray& geomIds) const
{
assertReadEnabled();
if(osnapMode == AcDb::kOsModeEnd )
{
McDbBlockReference tmpBlkRef;
tmpBlkRef.setPosition(m_pos);
tmpBlkRef.setScaleFactors(m_scale);
tmpBlkRef.setRotation(m_dRotation);
tmpBlkRef.setBlockTableRecord(m_idBlkRec);
McGeMatrix3d mat = tmpBlkRef.blockTransform();
for(int i =0; i < m_aryLinkPoint.length();i++)
{
AcGePoint3d tmp = m_aryLinkPoint[i];
tmp.transformBy(mat);
snapPoints.append(tmp);
}
}
else if(osnapMode == AcDb::kOsModeIns)
{
snapPoints.append(m_pos);
}
return Acad::eOk;
}