Class that handles the drawing of a polygon, including management of last corner deletion and drawing of leader lines with various constraints (eg 45 deg only). More...

#include <polygon_geom_manager.h>

Classes
class	CLIENT
	"Listener" interface for a class that wants to be updated about polygon geometry changes More...

Public Types
enum class	LEADER_MODE { DIRECT , DEG45 }
	The kind of the leader line. More...

Public Member Functions
	POLYGON_GEOM_MANAGER (CLIENT &aClient)

bool	AddPoint (const VECTOR2I &aPt)
	Lock in a polygon point.

void	SetFinished ()
	Mark the polygon finished and update the client.

void	Reset ()
	Clear the manager state and start again.

void	SetLeaderMode (LEADER_MODE aMode)
	Set the leader mode to use when calculating the leader/returner lines.

LEADER_MODE	GetLeaderMode () const

void	AllowIntersections (bool aEnabled)
	Enables/disables self-intersecting polygons.

bool	IntersectionsAllowed () const
	Check whether self-intersecting polygons are enabled.

bool	IsSelfIntersecting (bool aIncludeLeaderPts) const
	Check whether the locked points constitute a self-intersecting outline.

void	SetCursorPosition (const VECTOR2I &aPos)
	Set the current cursor position.

bool	IsPolygonInProgress () const

int	PolygonPointCount () const

bool	NewPointClosesOutline (const VECTOR2I &aPt) const

std::optional< VECTOR2I >	DeleteLastCorner ()
	Remove the last-added point from the polygon.

const SHAPE_LINE_CHAIN &	GetLockedInPoints () const
	Get the "locked-in" points that describe the polygon itself.

const SHAPE_LINE_CHAIN &	GetLeaderLinePoints () const
	Get the points comprising the leader line (the line from the last locked-in point to the current cursor position.

const SHAPE_LINE_CHAIN &	GetLoopLinePoints () const
	Get the points from the current cursor position to the polygon start point.

Private Member Functions
void	updateTemporaryLines (const VECTOR2I &aEndPoint, LEADER_MODE aModifier=LEADER_MODE::DIRECT)
	Update the leader and loop lines points based on a new endpoint (probably a cursor position)

Private Attributes
CLIENT &	m_client
	The current mode of the leader line.

LEADER_MODE	m_leaderMode
	Flag enabling self-intersecting polygons.

bool	m_intersectionsAllowed
	Point that have been "locked in".

SHAPE_LINE_CHAIN	m_lockedPoints
	Points in the temporary "leader" line(s)

SHAPE_LINE_CHAIN	m_leaderPts
	Points between the cursor and start point.

SHAPE_LINE_CHAIN	m_loopPts

Detailed Description

Class that handles the drawing of a polygon, including management of last corner deletion and drawing of leader lines with various constraints (eg 45 deg only).

This class handles only the geometry of the process.

Definition at line 35 of file polygon_geom_manager.h.

Member Enumeration Documentation

◆ LEADER_MODE

enum class POLYGON_GEOM_MANAGER::LEADER_MODE

strong

The kind of the leader line.

Enumerator
DIRECT	Unconstrained point-to-point.
DEG45	45 Degree only

Definition at line 69 of file polygon_geom_manager.h.

Constructor & Destructor Documentation

◆ POLYGON_GEOM_MANAGER()

POLYGON_GEOM_MANAGER::POLYGON_GEOM_MANAGER ( CLIENT & aClient )

Parameters

aClient is the client to pass the results onto

Definition at line 32 of file polygon_geom_manager.cpp.

Member Function Documentation

◆ AddPoint()

bool POLYGON_GEOM_MANAGER::AddPoint ( const VECTOR2I & aPt )

Lock in a polygon point.

Definition at line 39 of file polygon_geom_manager.cpp.

References SHAPE_LINE_CHAIN::Append(), SHAPE_LINE_CHAIN::CPoint(), IsPolygonInProgress(), IsSelfIntersecting(), m_client, m_intersectionsAllowed, m_leaderPts, m_lockedPoints, POLYGON_GEOM_MANAGER::CLIENT::OnFirstPoint(), POLYGON_GEOM_MANAGER::CLIENT::OnGeometryChange(), SHAPE_LINE_CHAIN::PointCount(), SHAPE_LINE_CHAIN::Remove(), and updateTemporaryLines().

Referenced by DRAWING_TOOL::DrawZone().

◆ AllowIntersections()

void POLYGON_GEOM_MANAGER::AllowIntersections ( bool aEnabled )

inline

Enables/disables self-intersecting polygons.

Parameters

aEnabled true if self-intersecting polygons are enabled.

Definition at line 110 of file polygon_geom_manager.h.

References m_intersectionsAllowed.

◆ DeleteLastCorner()

std::optional< VECTOR2I > POLYGON_GEOM_MANAGER::DeleteLastCorner ( )

Remove the last-added point from the polygon.

Definition at line 132 of file polygon_geom_manager.cpp.

References SHAPE_LINE_CHAIN::CLastPoint(), SHAPE_LINE_CHAIN::GetPoint(), m_client, m_leaderPts, m_lockedPoints, POLYGON_GEOM_MANAGER::CLIENT::OnGeometryChange(), SHAPE_LINE_CHAIN::PointCount(), SHAPE_LINE_CHAIN::Remove(), and updateTemporaryLines().

Referenced by DRAWING_TOOL::DrawZone().

◆ GetLeaderLinePoints()

const SHAPE_LINE_CHAIN & POLYGON_GEOM_MANAGER::GetLeaderLinePoints ( ) const

inline

Get the points comprising the leader line (the line from the last locked-in point to the current cursor position.

How this is drawn will depend on the LEADER_MODE

Definition at line 174 of file polygon_geom_manager.h.

References m_leaderPts.

Referenced by ZONE_CREATE_HELPER::OnComplete(), and ZONE_CREATE_HELPER::OnGeometryChange().

◆ GetLeaderMode()

LEADER_MODE POLYGON_GEOM_MANAGER::GetLeaderMode ( ) const

inline

Definition at line 100 of file polygon_geom_manager.h.

References m_leaderMode.

Referenced by ZONE_CREATE_HELPER::OnComplete().

◆ GetLockedInPoints()

const SHAPE_LINE_CHAIN & POLYGON_GEOM_MANAGER::GetLockedInPoints ( ) const

inline

Get the "locked-in" points that describe the polygon itself.

Definition at line 163 of file polygon_geom_manager.h.

References m_lockedPoints.

Referenced by ZONE_CREATE_HELPER::OnComplete(), and ZONE_CREATE_HELPER::OnGeometryChange().

◆ GetLoopLinePoints()

const SHAPE_LINE_CHAIN & POLYGON_GEOM_MANAGER::GetLoopLinePoints ( ) const

inline

Get the points from the current cursor position to the polygon start point.

Definition at line 183 of file polygon_geom_manager.h.

References m_loopPts.

Referenced by ZONE_CREATE_HELPER::OnComplete(), and ZONE_CREATE_HELPER::OnGeometryChange().

◆ IntersectionsAllowed()

bool POLYGON_GEOM_MANAGER::IntersectionsAllowed ( ) const

inline

Check whether self-intersecting polygons are enabled.

Returns: true if self-intersecting polygons are enabled.

Definition at line 120 of file polygon_geom_manager.h.

References m_intersectionsAllowed.

◆ IsPolygonInProgress()

bool POLYGON_GEOM_MANAGER::IsPolygonInProgress ( ) const

Returns: true if the polygon in "in progress", i.e. it has at least one locked-in point

Definition at line 114 of file polygon_geom_manager.cpp.

References m_lockedPoints, and SHAPE_LINE_CHAIN::PointCount().

Referenced by AddPoint(), and ZONE_CREATE_HELPER::OnGeometryChange().

◆ IsSelfIntersecting()

bool POLYGON_GEOM_MANAGER::IsSelfIntersecting ( bool aIncludeLeaderPts ) const

Check whether the locked points constitute a self-intersecting outline.

Parameters

aIncludeLeaderPts when true, also the leading points (not placed ones) will be tested.

Returns: True when the outline is self-intersecting.

Definition at line 88 of file polygon_geom_manager.cpp.

References SHAPE_LINE_CHAIN::Append(), SHAPE_LINE_CHAIN::CPoint(), m_leaderPts, m_lockedPoints, SHAPE_LINE_CHAIN::PointCount(), SHAPE_LINE_CHAIN::SelfIntersecting(), and SHAPE_LINE_CHAIN::SetClosed().

Referenced by AddPoint().

◆ NewPointClosesOutline()

bool POLYGON_GEOM_MANAGER::NewPointClosesOutline ( const VECTOR2I & aPt ) const

Returns: true if locking in the given point would close the current polygon.

Definition at line 126 of file polygon_geom_manager.cpp.

References SHAPE_LINE_CHAIN::CPoint(), m_lockedPoints, and SHAPE_LINE_CHAIN::PointCount().

Referenced by DRAWING_TOOL::DrawZone().

◆ PolygonPointCount()

int POLYGON_GEOM_MANAGER::PolygonPointCount ( ) const

Definition at line 120 of file polygon_geom_manager.cpp.

References m_lockedPoints, and SHAPE_LINE_CHAIN::PointCount().

◆ Reset()

void POLYGON_GEOM_MANAGER::Reset ( )

Clear the manager state and start again.

Definition at line 152 of file polygon_geom_manager.cpp.

References SHAPE_LINE_CHAIN::Clear(), m_client, m_leaderPts, m_lockedPoints, m_loopPts, and POLYGON_GEOM_MANAGER::CLIENT::OnGeometryChange().

Referenced by DRAWING_TOOL::DrawZone().

◆ SetCursorPosition()

void POLYGON_GEOM_MANAGER::SetCursorPosition ( const VECTOR2I & aPos )

Set the current cursor position.

Definition at line 108 of file polygon_geom_manager.cpp.

References updateTemporaryLines().

Referenced by DRAWING_TOOL::DrawZone().

◆ SetFinished()

void POLYGON_GEOM_MANAGER::SetFinished ( )

Mark the polygon finished and update the client.

Definition at line 75 of file polygon_geom_manager.cpp.

References m_client, and POLYGON_GEOM_MANAGER::CLIENT::OnComplete().

Referenced by DRAWING_TOOL::DrawZone().

◆ SetLeaderMode()

void POLYGON_GEOM_MANAGER::SetLeaderMode ( LEADER_MODE aMode )

Set the leader mode to use when calculating the leader/returner lines.

Definition at line 82 of file polygon_geom_manager.cpp.

References m_leaderMode.

Referenced by DRAWING_TOOL::DrawZone(), and ZONE_CREATE_HELPER::OnFirstPoint().

◆ updateTemporaryLines()

void POLYGON_GEOM_MANAGER::updateTemporaryLines	(	const VECTOR2I &	aEndPoint,
		LEADER_MODE	aModifier = `LEADER_MODE::DIRECT`
	)

private

Update the leader and loop lines points based on a new endpoint (probably a cursor position)

The "user" of the polygon data that is informed when the geometry changes

Definition at line 231 of file polygon_geom_manager.cpp.

References build45DegLeader(), SHAPE_LINE_CHAIN::CLastPoint(), SHAPE_LINE_CHAIN::Clear(), DEG45, m_client, m_leaderMode, m_leaderPts, m_lockedPoints, m_loopPts, POLYGON_GEOM_MANAGER::CLIENT::OnGeometryChange(), SHAPE_LINE_CHAIN::PointCount(), and SHAPE_LINE_CHAIN::Reverse().

Referenced by AddPoint(), DeleteLastCorner(), and SetCursorPosition().

Member Data Documentation

◆ m_client

CLIENT& POLYGON_GEOM_MANAGER::m_client

private

The current mode of the leader line.

Definition at line 198 of file polygon_geom_manager.h.

Referenced by AddPoint(), DeleteLastCorner(), Reset(), SetFinished(), and updateTemporaryLines().

◆ m_intersectionsAllowed

bool POLYGON_GEOM_MANAGER::m_intersectionsAllowed

private

Point that have been "locked in".

Definition at line 204 of file polygon_geom_manager.h.

Referenced by AddPoint(), AllowIntersections(), and IntersectionsAllowed().

◆ m_leaderMode

LEADER_MODE POLYGON_GEOM_MANAGER::m_leaderMode

private

Flag enabling self-intersecting polygons.

Definition at line 201 of file polygon_geom_manager.h.

Referenced by GetLeaderMode(), SetLeaderMode(), and updateTemporaryLines().

◆ m_leaderPts

SHAPE_LINE_CHAIN POLYGON_GEOM_MANAGER::m_leaderPts

private

Points between the cursor and start point.

Definition at line 210 of file polygon_geom_manager.h.

Referenced by AddPoint(), DeleteLastCorner(), GetLeaderLinePoints(), IsSelfIntersecting(), Reset(), and updateTemporaryLines().

◆ m_lockedPoints

SHAPE_LINE_CHAIN POLYGON_GEOM_MANAGER::m_lockedPoints

private

Points in the temporary "leader" line(s)

Definition at line 207 of file polygon_geom_manager.h.

Referenced by AddPoint(), DeleteLastCorner(), GetLockedInPoints(), IsPolygonInProgress(), IsSelfIntersecting(), NewPointClosesOutline(), PolygonPointCount(), Reset(), and updateTemporaryLines().

◆ m_loopPts

SHAPE_LINE_CHAIN POLYGON_GEOM_MANAGER::m_loopPts

private

Definition at line 213 of file polygon_geom_manager.h.

Referenced by GetLoopLinePoints(), Reset(), and updateTemporaryLines().

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

Classes

Public Types

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Member Enumeration Documentation

◆ LEADER_MODE

Constructor & Destructor Documentation

◆ POLYGON_GEOM_MANAGER()

Member Function Documentation

◆ AddPoint()

◆ AllowIntersections()

◆ DeleteLastCorner()

◆ GetLeaderLinePoints()

◆ GetLeaderMode()

◆ GetLockedInPoints()

◆ GetLoopLinePoints()

◆ IntersectionsAllowed()

◆ IsPolygonInProgress()

◆ IsSelfIntersecting()

◆ NewPointClosesOutline()

◆ PolygonPointCount()

◆ Reset()

◆ SetCursorPosition()

◆ SetFinished()

◆ SetLeaderMode()

◆ updateTemporaryLines()

Member Data Documentation

◆ m_client

◆ m_intersectionsAllowed

◆ m_leaderMode

◆ m_leaderPts

◆ m_lockedPoints

◆ m_loopPts