ON_PlanarSection Class Reference

#include <opennurbs_plus_sections.h>

Public Member Functions
	ON_PlanarSection ()
	ON_PlanarSection (const ON_PlanarSection &src)
	~ON_PlanarSection ()
void	EvaluateSurface (const class ON_Surface *surface)
ON_PlanarSection &	operator= (const ON_PlanarSection &src)

Public Attributes
ON_Curve *	m_2dcurve
ON_SimpleArray< ON_2dPoint >	m_2dpoints
	Surface parameters (when available) More...
ON_Curve *	m_3dcurve
ON_SectionAnalysisAppearance	m_appearance
const unsigned char	m_class_version
	constructor sets m_class_version = 0; More...
ON_SimpleArray< ON_3dVector >	m_curvatures
	Surface sectional curvature (when available) More...
ON_PlaneEquation	m_plane_eqn
ON_SimpleArray< ON_3dPoint >	m_points
	3d points on the section curve More...
ON_UUID	m_section_plane_id
	ON_SectionAnalysisPlane identification. More...
ON__UINT64	m_section_plane_mark

Constructor & Destructor Documentation

ON_PlanarSection() [1/2]

ON_PlanarSection::ON_PlanarSection

(

)

~ON_PlanarSection()

ON_PlanarSection::~ON_PlanarSection

(

)

ON_PlanarSection() [2/2]

ON_PlanarSection::ON_PlanarSection

(

const ON_PlanarSection &

src

)

Member Function Documentation

EvaluateSurface()

void ON_PlanarSection::EvaluateSurface

(

const class ON_Surface *

surface

)

Description: Evaluate the surface at the m_2dpoints[] values to set the m_points[] and m_curvatures[] values. Parameters: surface - [in] The input values of m_appearance, m_plane_eqn and m_m2d_points are used to calculate the 3d planar section values and these are returned in m_points[] and m_curvatures. If the appearance values indicate the 2d segments need to be refined, then m_2dpoints[] is updated as well.

operator=()

ON_PlanarSection& ON_PlanarSection::operator=

(

const ON_PlanarSection &

src

)

Member Data Documentation

m_2dcurve

ON_Curve* ON_PlanarSection::m_2dcurve

A 2d curve that approximates the intersection in the surface's parameter space. (Often null)

m_2dpoints

ON_SimpleArray<ON_2dPoint> ON_PlanarSection::m_2dpoints

Surface parameters (when available)

m_3dcurve

ON_Curve* ON_PlanarSection::m_3dcurve

A 3d curve that approximates the intersection In general, the curvature of m_3dcurve is a poor approximation of the surface's sectional curvature. (Often null)

m_appearance

ON_SectionAnalysisAppearance ON_PlanarSection::m_appearance

A copy of the appearance settings is stored here so the values can be quickly found. Use ON_SectionAnalysisAppearance.m_update_mark to efficiently detect changes and update these cached settings.

m_class_version

const unsigned char ON_PlanarSection::m_class_version

constructor sets m_class_version = 0;

Fields may be be added to this class during the V5 lifecycle. If that happens, then m_class_version will be incremented.

m_curvatures

ON_SimpleArray<ON_3dVector> ON_PlanarSection::m_curvatures

Surface sectional curvature (when available)

m_plane_eqn

ON_PlaneEquation ON_PlanarSection::m_plane_eqn

Equation of the plane used to calculate the section information below.

m_points

ON_SimpleArray<ON_3dPoint> ON_PlanarSection::m_points

3d points on the section curve

m_section_plane_id

ON_UUID ON_PlanarSection::m_section_plane_id

ON_SectionAnalysisPlane identification.

m_section_plane_mark

ON__UINT64 ON_PlanarSection::m_section_plane_mark