ON_SubDFaceParameter Class Reference

#include <opennurbs_subd.h>

Public Member Functions
	ON_SubDFaceParameter ()=default
	ON_SubDFaceParameter (const ON_SubDFaceParameter &)=default
	ON_SubDFaceParameter (ON_SubDFaceCornerDex cdex, double corner_s, double corner_t)
	Create a SubD face parameter that identifies a point on the face. The parameters (0,0) correspond the the corner vertex cdex.Vertex(face). The corner_s parameter runs from the corner vertex to the midpoint of cdex.RightEdge(face). The corner_t parameter runs from the corner vertex to the midpoint of cdex.LeftEdge(face). The parameters (1/2, 1/2) correspond the the center of the face. More...
	~ON_SubDFaceParameter ()=default
const bool	AtVertex () const
	An evaluation point is at a SubD vertex if IsSet() is true and FaceCornerParameters() = (0,0, 0,0). More...
const ON_SubDFaceCornerDex	FaceCornerDex () const
	m_cdex identifies face's subdivision quad the s and t parameters apply to. The corner vertex is V = m_cdex.Vertex(face). The edge entering the corner is LE = m_cdex.LeftEdge(face). The edge leaving the corner is RE = m_cdex.RightEdge(face). V = LE.RelativeVertex(1) = RE.RelativeVertex(0). More...
const ON_2dPoint	FaceCornerParameters () const
	cdex = FaceCornerDex() identifies face's subdivision quad the s and t parameters apply to. The corner vertex is V = cdex.Vertex(face). The edge entering the corner is LE = cdex.LeftEdge(face). The edge leaving the corner is RE = cdex.RightEdge(face). V = LE.RelativeVertex(1) = RE.RelativeVertex(0). More...
bool	IsNotSet ()
	Returns True if all values are not valid. More...
bool	IsNotSet () const
bool	IsSet ()
	Returns True if all values are valid. More...
bool	IsSet () const
const bool	OnEdge () const
	An evaluation point is on a subD edge if IsSet() is true and at least one of the values in FaceCornerParameters() is 0.0. More...
ON_SubDFaceParameter &	operator= (const ON_SubDFaceParameter &)=default
const ON_2dPoint	QuadFaceParameters () const
	For quad faces, QuadFaceParameters() returns 2 normalized parameters that span the entire quad face. The 2d points (0,0), (1,0), (1,1), (0,1) corresponed to the quad face's vertices face.Vertex(0), face.Vertex(1), face.Vertex(2), face.Vertex(3). More...

Static Public Member Functions
static int	Compare (const ON_SubDFaceParameter *lhs, const ON_SubDFaceParameter *rhs)
	Well ordered dictionary compare that uses ON_SubDFaceParameter::CompareAll() to compare nonnull values and safely sorts nullptr to the end. More...
static int	CompareAll (const ON_SubDFaceParameter &lhs, const ON_SubDFaceParameter &rhs)
	Well ordered dictionary compare of m_cdex, m_s, and m_t using ON_SubDFaceCornerDex::CompareAll() and ON_DBL::CompareValue(). Any set value < any unset value. More...
static const ON_SubDFaceParameter	CreateFromQuadFaceParameteters (double quad_face_s, double quad_face_t)
	Create at ON_SubDFaceParameter the corresponds to the the specified quad face parameters. The quad face parameters for face.Vertex(0) are (0,0). The quad face parameters for face.Vertex(1) are (1,0). The quad face parameters for face.Vertex(2) are (1,1). The quad face parameters for face.Vertex(3) are (0,1). More...

Static Public Attributes
static const ON_SubDFaceParameter	Nan
	ON_SubDFaceParameter::Nan has face_edge_count=0, corner_index=0, s=ON_DBL_QNAN, t=ON_DBL_QNAN. More...