a2dHit Struct Reference

struct for how a single object on one layer was hit More...

#include <polyver.h>

Collaboration diagram for a2dHit:

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List of all members.

Public Types
enum	Hit {   hit_none = 0x00, hit_stroke = 0x01, hit_fill = 0x02, hit_child = 0x04,   hit_member = 0x08, hit_captured = 0x10 }
	Basic hit type. More...
enum	Stroke1 { stroke1_none, stroke1_outside, stroke1_inside }
	How the point is on the stroke ( in stroke perpendicular direction ).
enum	Stroke2 {   stroke2_none, stroke2_vertex, stroke2_edgehor, stroke2_edgevert,   stroke2_edgeother }
	How the point is on the stroke ( in stroke parallel direction ).
Public Member Functions
	a2dHit ()
	Default constructor.
	a2dHit (Hit hit, Stroke1 stroke1, Stroke2 stroke2, unsigned int index, float distance)
	Standard constructor.
bool	IsHit () const
	true if this is a hit
bool	IsStrokeHit () const
	true if this is a stroke hit (parent or child/member stroke)
bool	IsFillHit () const
	true if this is a fill hit (parent or child/member fill)
bool	IsInsideHit () const
	true if this is a fill hit or an inside stroke hit (parent or child/member)
bool	IsDirectStrokeHit () const
	true if this is a direct stroke hit (not a member or child object stroke hit )
bool	IsDirectFillHit () const
	true if this is a direct fill hit (not a member or child object fill hit )
bool	IsChildHit () const
	true if this is child hit
bool	IsMemberdHit () const
	true if this is member object hit (e.g. line begin/end object)
bool	IsEdgeHit () const
	true if this is a stroke hit on an edge
Public Attributes
enum a2dHit::Hit	m_hit
enum a2dHit::Stroke1	m_stroke1
enum a2dHit::Stroke2	m_stroke2
unsigned int	m_index
	For edge/vertex hits the index of the edge / vertex.
float	m_distance
	For margin hits, the distance from the stroke center in fractions of the margin.
Static Public Attributes
static a2dHit	stock_nohit
	Stock object for no hit.
static a2dHit	stock_fill
	Stock object for a fill hit.
static a2dHit	stock_strokeoutside
	Stock object for an outer stroke hit on objects without vertices/edges (like circles).
static a2dHit	stock_strokeinside
	Stock object for an inner stroke hit on objects without vertices/edges (like circles).
Friends
Hit	operator| (Hit a, Hit b)

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Detailed Description

struct for how a single object on one layer was hit

Definition at line 38 of file polyver.h.

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Member Enumeration Documentation

enum a2dHit::Hit

Basic hit type.

For a object without childs, this is either hit_none, hit_stroke or hit_fill. A stroke hit is also given if the test-point has a margin distance from the strokes fill. This way 0-width strokes can also be hit. A distinction between a true stroke hit and a stroke margin hit is currently not possible. If the stroke or fill of a child or member is hit, the hit_child or hit_member flag is also set. Note: a2dHit is only used temporarily, so there is no need to save memory using bitfields.

Enumerator:

hit_none	The object is not hit. This should not happen, because the parent should include hit childs.
hit_stroke	The point is on the stroke or stroke margin.
hit_fill	The point is in the fill area.
hit_child	The point hits a child of the object.
hit_member	The point hits a member of the object (e.g. line begin/end object).
hit_captured	a hit which resulted into a captured object, and may now not hit the object itself, still the object will recieve mouse events.

Definition at line 49 of file polyver.h.

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Member Data Documentation

float a2dHit::m_distance

For margin hits, the distance from the stroke center in fractions of the margin.

Note: using a fraction of the margin makes the distance independent of local scaling

Definition at line 93 of file polyver.h.

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The documentation for this struct was generated from the following files:

• polyver.h
• polyver.cpp