API Reference > FacetModeler Namespace > Classes > Segment2D Class > Segment2D Methods > Segment2D::intersectXRay Method
Segment2D::intersectXRay Method
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Syntax
C++
OdUInt32 intersectXRay(const OdGePoint2d& ptTest, bool* pOnSegment = NULL, const OdGeTol& gTol = FMGeGbl::gTol) const;
Parameters
Parameters 
Description 
const OdGePoint2d& ptTest 
[in] Point to test.  
bool* pOnSegment = NULL 
[out] The result of checking whether a point lies on the segment.  
const OdGeTol& gTol = FMGeGbl::gTol 
[in] Tolerance.  
Returns

The number of different intersection points.

Description

Gets the number of different intersection points of the segment (including end points with minimal Y) with a ray, starting at ptTest and going in the X direction. 

 

Remarks

pOnSegment is set to true if the test point lies on the segment.

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