Geom::D2< Interval > Class Template Reference

Rect class. More...

#include <rect.h>

Collaboration diagram for Geom::D2< Interval >:

[legend]

List of all members.

Public Member Functions
	D2 ()
	Best not to use this constructor, do not rely on what it initializes the object to.
	D2 (Interval const &a, Interval const &b)
	D2 (Point const &a, Point const &b)
Interval &	operator[] (unsigned i)
Interval const &	operator[] (unsigned i) const
Point	min () const
Point	max () const
Point	corner (unsigned i) const
	Returns the four corners of the rectangle in positive order (clockwise if +Y is up, anticlockwise if +Y is down).
double	top () const
double	bottom () const
double	left () const
double	right () const
double	width () const
double	height () const
Point	dimensions () const
	Returns a vector from min to max.
Point	midpoint () const
double	area () const
	Compute the area of this rectangle.
bool	hasZeroArea (double eps=EPSILON) const
double	maxExtent () const
double	minExtent () const
bool	intersects (Rect const &r) const
bool	contains (Rect const &r) const
bool	contains (Point const &p) const
void	expandTo (Point p)
void	unionWith (Rect const &b)
void	unionWith (OptRect const &b)
void	expandBy (double amnt)
void	expandBy (Point const p)
Private Attributes
Interval	f [2]

---

Detailed Description

template<>
class Geom::D2< Interval >

Rect class.

The Rect class is actually a specialisation of D2<Interval>.

Definition at line 60 of file rect.h.

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Constructor & Destructor Documentation

Geom::D2< Interval >::D2

(

)

[inline]

Best not to use this constructor, do not rely on what it initializes the object to.

The default constructor creates a rect of default intervals.

Geom::D2< Interval >::D2	(	Interval const &	a,
		Interval const &	b
	)			[inline]

Geom::D2< Interval >::D2	(	Point const &	a,
		Point const &	b
	)			[inline]

---

Member Function Documentation

double Geom::D2< Interval >::area

(

)

const [inline]

Compute the area of this rectangle.

Note that a zero area rectangle is not empty - just as the interval [0,0] contains one point, the rectangle [0,0] x [0,0] contains 1 point and no area.

Return values:

For

a valid return value, the rect must be tested for emptyness first.

Definition at line 116 of file rect.h.

References Geom::D2< T >::f, Geom::X, and Geom::Y.

Referenced by SPDesktop::zoom_quick().

{ return f[X].extent() * f[Y].extent(); }

double Geom::D2< Interval >::bottom

(

)

const [inline]

Definition at line 99 of file rect.h.

References Geom::D2< T >::f, and Geom::Y.

Referenced by Geom::distanceSq(), and Inkscape::LivePathEffect::LPEMirrorSymmetry::doOnApply().

{ return f[Y].max(); }

bool Geom::D2< Interval >::contains

(

Point const &

p

)

const [inline]

Definition at line 131 of file rect.h.

References Geom::D2< T >::f, Geom::X, and Geom::Y.

                                                {
        return f[X].contains(p[X]) && f[Y].contains(p[Y]);
    }

bool Geom::D2< Interval >::contains

(

Rect const &

r

)

const [inline]

Definition at line 128 of file rect.h.

References Geom::D2< T >::f, Geom::X, and Geom::Y.

Referenced by cubic_bbox(), SnapManager::findBestSnap(), Inkscape::Text::Layout::getLetterAt(), is_within(), SPDesktop::isWithinViewport(), scroll_to_show_item(), Inkscape::UI::ControlPointSelection::selectArea(), and GrDrag::selectRect().

                                                { 
        return f[X].contains(r[X]) && f[Y].contains(r[Y]); 
    }

Point Geom::D2< Interval >::corner

(

unsigned

i

)

const [inline]

Returns the four corners of the rectangle in positive order (clockwise if +Y is up, anticlockwise if +Y is down).

Definition at line 88 of file rect.h.

References Geom::D2< T >::f, Geom::max(), Geom::min(), Point, Geom::X, and Geom::Y.

Referenced by Inkscape::UI::ControlPointSelection::_rotationRadius(), cornerFarthestFrom(), Inkscape::Text::Layout::createSelectionShape(), SPCurve::new_from_rect(), Inkscape::UI::TransformHandleSet::setBounds(), Inkscape::UI::SkewHandle::startTransform(), Inkscape::UI::RotateHandle::startTransform(), Inkscape::UI::ScaleSideHandle::startTransform(), Inkscape::UI::ScaleCornerHandle::startTransform(), and transform_rect().

                                   {
        switch(i % 4) {
            case 0:  return Point(f[X].min(), f[Y].min());
            case 1:  return Point(f[X].max(), f[Y].min());
            case 2:  return Point(f[X].max(), f[Y].max());
            default: return Point(f[X].min(), f[Y].max());
        }
    }

Point Geom::D2< Interval >::dimensions

(

)

const [inline]

Returns a vector from min to max.

Definition at line 107 of file rect.h.

References Geom::D2< T >::f, Point, Geom::X, and Geom::Y.

Referenced by Inkscape::SelTrans::_calcAbsAffineGeom(), Inkscape::SelTrans::_getGeomHandlePos(), Inkscape::UI::TransformHandleSet::_updateVisibility(), Inkscape::Text::Layout::createSelectionShape(), generate_marker(), Inkscape::SelTrans::grab(), Inkscape::UI::View::EditWidget::onWindowSizeAllocate(), pattern_tile(), SPDesktop::set_display_area(), sp_arc_drag(), sp_desktop_widget_update_scrollbars(), sp_dyna_draw_get_npoint(), sp_dyna_draw_get_vpoint(), sp_eraser_get_npoint(), sp_eraser_get_vpoint(), sp_gradient_get_g2d_matrix(), sp_gradient_get_gs2d_matrix(), sp_gradient_set_gs2d_matrix(), sp_rect_drag(), Inkscape::UI::View::EditWidget::updateScrollbars(), SPDesktop::zoom_absolute_keep_point(), and SPDesktop::zoom_relative_keep_point().

{ return Point(f[X].extent(), f[Y].extent()); }

void Geom::D2< Interval >::expandBy

(

Point const

p

)

[inline]

Definition at line 146 of file rect.h.

References Geom::D2< T >::f, Geom::X, and Geom::Y.

                                         { 
        f[X].expandBy(p[X]);  f[Y].expandBy(p[Y]); 
    }

void Geom::D2< Interval >::expandBy

(

double

amnt

)

[inline]

Definition at line 143 of file rect.h.

References Geom::D2< T >::f, Geom::X, and Geom::Y.

Referenced by Inkscape::ObjectSnapper::_findCandidates(), feed_path_to_cairo(), get_visual_bbox(), nr_arena_shape_pick(), SPDesktop::scroll_to_point(), SPDesktop::set_display_area(), and sp_canvas_bpath_point().

                                         {
        f[X].expandBy(amnt);  f[Y].expandBy(amnt); 
    }

void Geom::D2< Interval >::expandTo

(

Point

p

)

[inline]

Definition at line 135 of file rect.h.

References Geom::D2< T >::f, Geom::X, and Geom::Y.

Referenced by SnapManager::_snapTransformed(), Inkscape::UI::Node::bounds(), bounds_exact_transformed(), feed_curve_to_cairo(), geom_curve_bbox_wind_distance(), Inkscape::SelTrans::grab(), and pathv_matrix_point_bbox_wind_distance().

                                         { 
        f[X].extendTo(p[X]);  f[Y].extendTo(p[Y]); 
    }

bool Geom::D2< Interval >::hasZeroArea

(

double

eps = EPSILON

)

const [inline]

Definition at line 117 of file rect.h.

Referenced by get_scale_transform_with_stroke(), Inkscape::Filters::Filter::render(), and sp_export_png_file().

{ return (area() <= eps); }

double Geom::D2< Interval >::height

(

)

const [inline]

Definition at line 104 of file rect.h.

References Geom::D2< T >::f, and Geom::Y.

Referenced by Inkscape::UI::ClipboardManagerImpl::_onGet(), SPDocument::fitToRect(), sp_desktop_widget_size_allocate(), sp_do_export_png(), sp_export_png_file(), sp_flood_do_flood_fill(), and sp_marker_update().

{ return f[Y].extent(); }

bool Geom::D2< Interval >::intersects

(

Rect const &

r

)

const [inline]

Definition at line 125 of file rect.h.

References Geom::D2< T >::f, Geom::X, and Geom::Y.

Referenced by Inkscape::ObjectSnapper::_findCandidates(), feed_curve_to_cairo(), geom_curve_bbox_wind_distance(), Geom::mono_intersect(), Geom::mono_pair(), and overlaps().

                                                { 
        return f[X].intersects(r[X]) && f[Y].intersects(r[Y]); 
    }

double Geom::D2< Interval >::left

(

)

const [inline]

Definition at line 100 of file rect.h.

References Geom::D2< T >::f, and Geom::X.

Referenced by Geom::distanceSq(), Inkscape::LivePathEffect::LPEMirrorSymmetry::doOnApply(), and Geom::outer_crossing().

{ return f[X].min(); }

Point Geom::D2< Interval >::max

(

)

const [inline]

Definition at line 84 of file rect.h.

References Geom::D2< T >::f, max(), Point, Geom::X, and Geom::Y.

Referenced by Inkscape::Filters::Filter::_filter_resolution(), Inkscape::SelTrans::_getGeomHandlePos(), Inkscape::Filters::Filter::bbox_enlarge(), Inkscape::UI::Dialog::BBoxSort::BBoxSort(), Inkscape::Text::Layout::createSelectionShape(), Inkscape::Extension::Internal::Grid::effect(), Inkscape::Filters::Filter::filter_effect_area(), SPDocument::fitToRect(), from_2geom(), SPDesktop::get_display_area(), Inkscape::Filters::get_item_bbox(), Box3D::Line::intersection_with_viewbox(), max(), SPDesktop::point(), SPDesktop::push_current_zoom(), render_pixbuf(), SPDesktop::scroll_to_point(), SPDesktop::set_display_area(), NRArenaShape::setPaintBox(), sp_desktop_widget_update_scrollbars(), sp_export_bbox_equal(), sp_flood_do_flood_fill(), sp_selection_tile(), sp_text_context_root_handler(), CtrlRect::update(), Inkscape::UI::View::EditWidget::updateRulers(), Inkscape::UI::View::EditWidget::updateScrollbars(), and SPDesktop::zoom_relative_keep_point().

{ return Point(f[X].max(), f[Y].max()); }

double Geom::D2< Interval >::maxExtent

(

)

const [inline]

Definition at line 119 of file rect.h.

References Geom::D2< T >::f, Geom::max(), Geom::X, and Geom::Y.

Referenced by Inkscape::UI::TransformHandleSet::_updateVisibility(), Geom::mono_intersect(), and Geom::mono_pair().

{ return std::max(f[X].extent(), f[Y].extent()); }

Point Geom::D2< Interval >::midpoint

(

)

const [inline]

Definition at line 108 of file rect.h.

References Geom::D2< T >::f, Point, Geom::X, and Geom::Y.

Referenced by cornerFarthestFrom(), Inkscape::UI::Widget::ZoomStatus::on_value_changed(), Inkscape::UI::View::EditWidget::onWindowSizeAllocate(), Inkscape::ZoomVerb::perform(), scroll_to_show_item(), Inkscape::UI::TransformHandleSet::setBounds(), sp_arc_drag(), sp_desktop_widget_size_allocate(), sp_dtw_zoom_menu_handler(), sp_dtw_zoom_value_changed(), sp_file_revert_dialog(), sp_namedview_document_from_window(), SPDesktop::zoom_page_width(), and SPDesktop::zoom_quick().

{ return Point(f[X].middle(), f[Y].middle()); }

Point Geom::D2< Interval >::min

(

)

const [inline]

Definition at line 83 of file rect.h.

References Geom::D2< T >::f, min(), Point, Geom::X, and Geom::Y.

Referenced by Inkscape::SelTrans::_calcAbsAffineGeom(), Inkscape::Filters::Filter::_filter_resolution(), Inkscape::SelTrans::_getGeomHandlePos(), Inkscape::Filters::Filter::bbox_enlarge(), Inkscape::UI::Dialog::BBoxSort::BBoxSort(), Inkscape::Text::Layout::createSelectionShape(), Inkscape::Extension::Internal::Grid::effect(), Inkscape::Filters::Filter::filter_effect_area(), SPDocument::fitToRect(), from_2geom(), SPDesktop::get_display_area(), Inkscape::Filters::get_item_bbox(), get_scale_transform_with_stroke(), Inkscape::SelTrans::grab(), Box3D::Line::intersection_with_viewbox(), min(), perform_bitmap_scanline_check(), SPDesktop::point(), SPDesktop::push_current_zoom(), render_pixbuf(), SPDesktop::scroll_to_point(), SPDesktop::scroll_world(), SPDesktop::set_display_area(), NRArenaShape::setPaintBox(), sp_desktop_widget_update_scrollbars(), sp_dyna_draw_get_npoint(), sp_dyna_draw_get_vpoint(), sp_eraser_get_npoint(), sp_eraser_get_vpoint(), sp_export_bbox_equal(), sp_flood_do_flood_fill(), sp_generate_internal_bitmap(), sp_gradient_get_g2d_matrix(), sp_gradient_get_gs2d_matrix(), sp_gradient_set_gs2d_matrix(), sp_rect_drag(), sp_selection_tile(), sp_text_context_root_handler(), CtrlRect::update(), Inkscape::UI::View::EditWidget::updateRulers(), Inkscape::UI::View::EditWidget::updateScrollbars(), Inkscape::Extension::Internal::OdfOutput::writeTree(), and SPDesktop::zoom_relative_keep_point().

{ return Point(f[X].min(), f[Y].min()); }

double Geom::D2< Interval >::minExtent

(

)

const [inline]

Definition at line 120 of file rect.h.

References Geom::D2< T >::f, Geom::min(), Geom::X, and Geom::Y.

Referenced by Inkscape::UI::TransformHandleSet::_updateVisibility(), and SPDesktop::zoom_page().

{ return std::min(f[X].extent(), f[Y].extent()); }

Interval const& Geom::D2< Interval >::operator[]

(

unsigned

i

)

const [inline]

Definition at line 81 of file rect.h.

References Geom::D2< T >::f.

{ return f[i]; }

Interval& Geom::D2< Interval >::operator[]

(

unsigned

i

)

[inline]

Definition at line 80 of file rect.h.

References Geom::D2< T >::f.

{ return f[i]; }

double Geom::D2< Interval >::right

(

)

const [inline]

Definition at line 101 of file rect.h.

References Geom::D2< T >::f, and Geom::X.

Referenced by Geom::distanceSq().

{ return f[X].max(); }

double Geom::D2< Interval >::top

(

)

const [inline]

Definition at line 98 of file rect.h.

References Geom::D2< T >::f, and Geom::Y.

Referenced by Geom::distanceSq(), and Inkscape::LivePathEffect::LPEMirrorSymmetry::doOnApply().

{ return f[Y].min(); }

void Geom::Rect::unionWith

(

OptRect const &

b

)

[inline]

Definition at line 254 of file rect.h.

                                            { 
    if (b) {
        unionWith(*b);
    }
}

void Geom::D2< Interval >::unionWith

(

Rect const &

b

)

[inline]

Definition at line 138 of file rect.h.

References Geom::D2< T >::f, Geom::X, and Geom::Y.

Referenced by bounds_exact_transformed(), and Geom::union_list().

                                         { 
        f[X].unionWith(b[X]); f[Y].unionWith(b[Y]); 
    }

double Geom::D2< Interval >::width

(

)

const [inline]

Definition at line 103 of file rect.h.

References Geom::D2< T >::f, and Geom::X.

Referenced by Inkscape::UI::ClipboardManagerImpl::_onGet(), SPDocument::fitToRect(), sp_desktop_widget_size_allocate(), sp_do_export_png(), sp_export_png_file(), sp_flood_do_flood_fill(), and sp_marker_update().

{ return f[X].extent(); }

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Member Data Documentation

Interval Geom::D2< Interval >::f[2] [private]

Definition at line 62 of file rect.h.

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

• rect.h