API Reference > OdGe Classes > OdGeMatrix3d Class > OdGeMatrix3d Methods > OdGeMatrix3d::isPerspective Method
OdGeMatrix3d::isPerspective Method
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Syntax
C++
bool isPerspective(const OdGeTol& tol = OdGeContext::gTol) const;
Parameters
Parameters 
Description 
const OdGeTol& tol = OdGeContext::gTol 
[in] Geomentric tolerance. 
Description

Indicates whether a matrix can be used for perspective projections. 

 

Remarks

Returns true if [3][0] or [3][1] or [3][2] elements have non-zero values considering passed tolerance.

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