Inkscape: Box3D Namespace Reference

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Perspective line for 3D perspectives. More...

Classes
class	Line

class	PerspectiveLine

class	VanishingPoint

struct	VPDrag

struct	VPDragger

Enumerations
enum	Axis { X = 1 , Y = 2 , Z = 4 , XY = 3 , XZ = 5 , YZ = 6 , XYZ = 7 , NONE = 0 }

enum	FrontOrRear { FRONT = 0 , REAR = 8 }

enum	VPState { VP_FINITE = 0 , VP_INFINITE }

Functions
std::pair< Axis, Axis >	get_remaining_axes (Axis axis)

Glib::ustring	string_from_axes (Box3D::Axis axis)

int	axis_to_int (Box3D::Axis axis)

Proj::Axis	toProj (Box3D::Axis axis)

int	face_to_int (unsigned int face_id)

std::pair< Box3D::Axis, Box3D::FrontOrRear >	int_to_face (unsigned id)

bool	is_face_id (unsigned int face_id)

unsigned int	number_of_axis_directions (Box3D::Axis axis)
	inline gint opposite_face (guint face_id) { return face_id + (((face_id % 2) == 0) ? 1 : -1); }

bool	is_plane (Box3D::Axis plane)

bool	is_single_axis_direction (Box3D::Axis dir)

Box3D::Axis	third_axis_direction (Box3D::Axis dir1, Box3D::Axis dir2)
	Given two axis directions out of {X, Y, Z} or the corresponding plane, return the remaining one We don't check if 'plane' really specifies a plane (i.e., if it consists of precisely two directions).

Box3D::Axis	third_axis_direction (Box3D::Axis plane)

Box3D::Axis	extract_first_axis_direction (Box3D::Axis dirs)

Box3D::Axis	extract_second_axis_direction (Box3D::Axis dirs)

Box3D::Axis	orth_plane_or_axis (Box3D::Axis axis)

Box3D::Axis	get_perpendicular_axis_direction (Box3D::Axis dirs)

std::pair< double, double >	coordinates (Geom::Point const &v1, Geom::Point const &v2, Geom::Point const &w)

bool	lies_in_sector (Geom::Point const &v1, Geom::Point const &v2, Geom::Point const &w)

bool	lies_in_quadrangle (Geom::Point const &A, Geom::Point const &B, Geom::Point const &C, Geom::Point const &D, Geom::Point const &pt)

static double	pos_angle (Geom::Point v, Geom::Point w)

std::pair< Geom::Point, Geom::Point >	side_of_intersection (Geom::Point const &A, Geom::Point const &B, Geom::Point const &C, Geom::Point const &D, Geom::Point const &pt, Geom::Point const &dir)

double	determinant (Geom::Point const &a, Geom::Point const &b)

std::ostream &	operator<< (std::ostream &out_file, const Line &in_line)
	A function to print out the Line.

static void	vp_drag_sel_changed (Inkscape::Selection *, gpointer data)

static void	vp_drag_sel_modified (Inkscape::Selection *, guint, gpointer data)

static bool	have_VPs_of_same_perspective (VPDragger dr1, VPDragger dr2)

static void	vp_knot_moved_handler (SPKnot *knot, Geom::Point const &ppointer, guint state, gpointer data)

static void	vp_knot_grabbed_handler (SPKnot *, unsigned int, gpointer data)

static void	vp_knot_ungrabbed_handler (SPKnot *knot, guint, gpointer data)

Variables
Axis	axes [3] = { X, Y, Z }

Axis	planes [3] = { XY, XZ, YZ }

FrontOrRear	face_positions [2] = { FRONT, REAR }

const double	epsilon = 1e-6

Detailed Description

Perspective line for 3D perspectives.

Authors: Maximilian Albert Anhal.nosp@m.ter4.nosp@m.2@gmx.nosp@m..de

Released under GNU GPL v2+, read the file 'COPYING' for more information.

Enumeration Type Documentation

◆ Axis

enum Box3D::Axis

Enumerator
X
Y
Z
XY
XZ
YZ
XYZ
NONE

Definition at line 60 of file axis-manip.h.

◆ FrontOrRear

enum Box3D::FrontOrRear

Enumerator
FRONT
REAR

Definition at line 73 of file axis-manip.h.

◆ VPState

enum Box3D::VPState

Enumerator
VP_FINITE
VP_INFINITE

Definition at line 36 of file vanishing-point.h.

Function Documentation

◆ axis_to_int()

int Box3D::axis_to_int ( Box3D::Axis axis )

inline

Definition at line 79 of file axis-manip.h.

References NONE, X, Y, and Z.

◆ coordinates()

std::pair< double, double > Box3D::coordinates	(	Geom::Point const &	v1,
		Geom::Point const &	v2,
		Geom::Point const &	w
	)

Definition at line 79 of file line-geometry.cpp.

References det(), determinant(), epsilon, and w.

Referenced by lies_in_sector().

◆ determinant()

double Box3D::determinant	(	Geom::Point const &	a,
		Geom::Point const &	b
	)

inline

Definition at line 64 of file line-geometry.h.

References Geom::X, and Geom::Y.

Referenced by coordinates().

◆ extract_first_axis_direction()

Box3D::Axis Box3D::extract_first_axis_direction ( Box3D::Axis dirs )

inline

Definition at line 221 of file axis-manip.h.

References NONE, X, Y, and Z.

Referenced by Inkscape::UI::Tools::Box3dTool::drag(), extract_second_axis_direction(), get_remaining_axes(), and Box3DSide::set().

◆ extract_second_axis_direction()

Box3D::Axis Box3D::extract_second_axis_direction ( Box3D::Axis dirs )

inline

Definition at line 227 of file axis-manip.h.

References extract_first_axis_direction().

Referenced by Inkscape::UI::Tools::Box3dTool::drag(), get_remaining_axes(), and Box3DSide::set().

◆ face_to_int()

int Box3D::face_to_int ( unsigned int face_id )

inline

Definition at line 149 of file axis-manip.h.

Referenced by box3d_get_sides().

◆ get_perpendicular_axis_direction()

Box3D::Axis Box3D::get_perpendicular_axis_direction ( Box3D::Axis dirs )

inline

Definition at line 236 of file axis-manip.h.

References NONE, X, Y, and Z.

◆ get_remaining_axes()

std::pair< Axis, Axis > Box3D::get_remaining_axes ( Axis axis )

Definition at line 30 of file axis-manip.cpp.

References extract_first_axis_direction(), extract_second_axis_direction(), is_single_axis_direction(), NONE, and orth_plane_or_axis().

Referenced by box3d_set_new_z_orders_case1().

◆ have_VPs_of_same_perspective()

static bool Box3D::have_VPs_of_same_perspective	(	VPDragger *	dr1,
		VPDragger *	dr2
	)

static

Definition at line 63 of file vanishing-point.cpp.

References Box3D::VPDragger::hasPerspective(), and Box3D::VPDragger::vps.

Referenced by vp_knot_moved_handler().

◆ int_to_face()

std::pair< Box3D::Axis, Box3D::FrontOrRear > Box3D::int_to_face ( unsigned id )

inline

Definition at line 169 of file axis-manip.h.

References FRONT, NONE, REAR, XY, XZ, and YZ.

Referenced by box3d_swap_sides(), and Inkscape::UI::Tools::Box3dTool::drag().

◆ is_face_id()

bool Box3D::is_face_id ( unsigned int face_id )

inline

Definition at line 181 of file axis-manip.h.

Referenced by Box3DSide::set().

◆ is_plane()

bool Box3D::is_plane ( Box3D::Axis plane )

inline

Definition at line 200 of file axis-manip.h.

References number_of_axis_directions().

Referenced by Inkscape::UI::Tools::Box3dTool::drag(), and Box3DSide::set().

◆ is_single_axis_direction()

bool Box3D::is_single_axis_direction ( Box3D::Axis dir )

inline

Definition at line 204 of file axis-manip.h.

Referenced by get_remaining_axes().

◆ lies_in_quadrangle()

bool Box3D::lies_in_quadrangle	(	Geom::Point const &	A,
		Geom::Point const &	B,
		Geom::Point const &	C,
		Geom::Point const &	D,
		Geom::Point const &	pt
	)

Definition at line 104 of file line-geometry.cpp.

References D, and lies_in_sector().

◆ lies_in_sector()

bool Box3D::lies_in_sector	(	Geom::Point const &	v1,
		Geom::Point const &	v2,
		Geom::Point const &	w
	)

Definition at line 93 of file line-geometry.cpp.

References coordinates(), Geom::dot(), and w.

Referenced by lies_in_quadrangle(), SPBox3D::pt_lies_in_PL_sector(), SPBox3D::recompute_z_orders(), and side_of_intersection().

◆ number_of_axis_directions()

unsigned int Box3D::number_of_axis_directions ( Box3D::Axis axis )

inline

inline gint opposite_face (guint face_id) { return face_id + (((face_id % 2) == 0) ? 1 : -1); }

Definition at line 191 of file axis-manip.h.

References num, X, Y, and Z.

Referenced by is_plane().

◆ operator<<()

std::ostream & Box3D::operator<<	(	std::ostream &	out_file,
		const Line &	in_line
	)

inline

A function to print out the Line.

It just prints out the coordinates of start point and direction on the given output stream

Definition at line 77 of file line-geometry.h.

◆ orth_plane_or_axis()

Box3D::Axis Box3D::orth_plane_or_axis ( Box3D::Axis axis )

inline

Definition at line 231 of file axis-manip.h.

References XYZ.

Referenced by Inkscape::UI::Tools::Box3dTool::drag(), get_remaining_axes(), and Box3DSide::set().

◆ pos_angle()

static double Box3D::pos_angle	(	Geom::Point	v,
		Geom::Point	w
	)

static

Definition at line 109 of file line-geometry.cpp.

References Geom::atan2(), and w.

Referenced by side_of_intersection().

◆ side_of_intersection()

std::pair< Geom::Point, Geom::Point > Box3D::side_of_intersection	(	Geom::Point const &	A,
		Geom::Point const &	B,
		Geom::Point const &	C,
		Geom::Point const &	D,
		Geom::Point const &	pt,
		Geom::Point const &	dir
	)

Definition at line 120 of file line-geometry.cpp.

References D, lies_in_sector(), pos_angle(), and result.

Referenced by Box3D::Line::intersection_with_viewbox().

◆ string_from_axes()

Glib::ustring Box3D::string_from_axes ( Box3D::Axis axis )

Definition at line 36 of file axis-manip.cpp.

References result, X, Y, and Z.

Referenced by Box3DSide::axes_string().

◆ third_axis_direction() [1/2]

Box3D::Axis Box3D::third_axis_direction	(	Box3D::Axis	dir1,
		Box3D::Axis	dir2
	)

inline

Given two axis directions out of {X, Y, Z} or the corresponding plane, return the remaining one We don't check if 'plane' really specifies a plane (i.e., if it consists of precisely two directions).

Definition at line 213 of file axis-manip.h.

Referenced by box3d_side_compute_corner_ids().

◆ third_axis_direction() [2/2]

Box3D::Axis Box3D::third_axis_direction ( Box3D::Axis plane )

inline

Definition at line 216 of file axis-manip.h.

◆ toProj()

Proj::Axis Box3D::toProj ( Box3D::Axis axis )

inline

Definition at line 95 of file axis-manip.h.

References Proj::NONE, NONE, Proj::X, X, Proj::Y, Y, Proj::Z, and Z.

Referenced by box3d_set_new_z_orders_case1(), SPBox3D::pt_lies_in_PL_sector(), and SPBox3D::recompute_z_orders().

◆ vp_drag_sel_changed()

static void Box3D::vp_drag_sel_changed	(	Inkscape::Selection *	,
		gpointer	data
	)

static

Definition at line 46 of file vanishing-point.cpp.

References data, Box3D::VPDrag::updateBoxReprs(), Box3D::VPDrag::updateDraggers(), and Box3D::VPDrag::updateLines().

Referenced by Box3D::VPDrag::VPDrag().

◆ vp_drag_sel_modified()

static void Box3D::vp_drag_sel_modified	(	Inkscape::Selection *	,
		guint	,
		gpointer	data
	)

static

Definition at line 54 of file vanishing-point.cpp.

References data, Box3D::VPDrag::updateBoxHandles(), Box3D::VPDrag::updateDraggers(), and Box3D::VPDrag::updateLines().

Referenced by Box3D::VPDrag::VPDrag().

◆ vp_knot_grabbed_handler()

static void Box3D::vp_knot_grabbed_handler	(	SPKnot *	,
		unsigned int	,
		gpointer	data
	)

static

Definition at line 196 of file vanishing-point.cpp.

References data, Box3D::VPDrag::dragging, and Box3D::VPDragger::parent.

Referenced by Box3D::VPDragger::VPDragger().

◆ vp_knot_moved_handler()

static void Box3D::vp_knot_moved_handler	(	SPKnot *	knot,
		Geom::Point const &	ppointer,
		guint	state,
		gpointer	data
	)

static

Definition at line 73 of file vanishing-point.cpp.

Referenced by Box3D::VPDragger::VPDragger().

◆ vp_knot_ungrabbed_handler()

static void Box3D::vp_knot_ungrabbed_handler	(	SPKnot *	knot,
		guint	,
		gpointer	data
	)

static

Definition at line 204 of file vanishing-point.cpp.

References data, Box3D::VPDrag::document, Box3D::VPDrag::dragging, Box3D::VPDragger::dragging_started, Box3D::VPDragger::parent, Box3D::VPDragger::point, Box3D::VPDragger::point_original, SPKnot::pos, Box3D::VPDrag::updateBoxHandles(), Box3D::VPDrag::updateDraggers(), Box3D::VPDrag::updateLines(), and Box3D::VPDragger::vps.

Referenced by Box3D::VPDragger::VPDragger().

Variable Documentation

◆ axes

Axis Box3D::axes = { X, Y, Z }

Definition at line 25 of file axis-manip.cpp.

Referenced by box3d_exchange_coords(), and SPBox3D::recompute_z_orders().

◆ epsilon

const double Box3D::epsilon = 1e-6

Definition at line 56 of file axis-manip.h.

Referenced by coordinates(), and Box3D::Line::pts_coincide().

◆ face_positions

FrontOrRear Box3D::face_positions = { FRONT, REAR }

Definition at line 27 of file axis-manip.cpp.

◆ planes

Axis Box3D::planes = { XY, XZ, YZ }

Definition at line 26 of file axis-manip.cpp.

Classes

Enumerations

Functions

Variables

Detailed Description

Enumeration Type Documentation

◆ Axis

◆ FrontOrRear

◆ VPState

Function Documentation

◆ axis_to_int()

◆ coordinates()

◆ determinant()

◆ extract_first_axis_direction()

◆ extract_second_axis_direction()

◆ face_to_int()

◆ get_perpendicular_axis_direction()

◆ get_remaining_axes()

◆ have_VPs_of_same_perspective()

◆ int_to_face()

◆ is_face_id()

◆ is_plane()

◆ is_single_axis_direction()

◆ lies_in_quadrangle()

◆ lies_in_sector()

◆ number_of_axis_directions()

◆ operator<<()

◆ orth_plane_or_axis()

◆ pos_angle()

◆ side_of_intersection()

◆ string_from_axes()

◆ third_axis_direction() [1/2]

◆ third_axis_direction() [2/2]

◆ toProj()

◆ vp_drag_sel_changed()

◆ vp_drag_sel_modified()

◆ vp_knot_grabbed_handler()

◆ vp_knot_moved_handler()

◆ vp_knot_ungrabbed_handler()

Variable Documentation

◆ axes

◆ epsilon

◆ face_positions

◆ planes