Geom::Scale Class Reference

Scaling from the origin. More...

#include <transforms.h>

Inheritance diagram for Geom::Scale:

Public Member Functions
	Scale ()=default
	Create a scaling that doesn't do anything.
	Scale (Point const &p)
	Create a scaling from two scaling factors given as coordinates of a point.
	Scale (Coord x, Coord y)
	Create a scaling from two scaling factors.
	Scale (Coord s)
	Create an uniform scaling from a single scaling factor.
	operator Affine () const
Coord	operator[] (Dim2 d) const
Coord	operator[] (unsigned d) const
Coord &	operator[] (Dim2 d)
Coord &	operator[] (unsigned d)
Scale &	operator*= (Scale const &b)
bool	operator== (Scale const &o) const
Point	vector () const
Scale	inverse () const
Public Member Functions inherited from Geom::TransformOperations< Scale >
Affine	operator* (T2 const &t) const

Static Public Member Functions
static Scale	identity ()

Private Attributes
Point	vec = { 1, 1 }

Friends
class	Point

Related Symbols
(Note that these are not member symbols.)
template<>
Scale	pow (Scale const &s, int n)
	Specialization of exponentiation for Scale.

Detailed Description

Scaling from the origin.

During scaling, the point (0,0) will not move. To obtain a scale with a different invariant point, combine with translation to the origin and back.

Definition at line 148 of file transforms.h.

Constructor & Destructor Documentation

Scale() [1/4]

Geom::Scale::Scale ( )

default

Create a scaling that doesn't do anything.

Referenced by inverse().

Scale() [2/4]

Geom::Scale::Scale ( Point const &  p )

inlineexplicit

Create a scaling from two scaling factors given as coordinates of a point.

Definition at line 156 of file transforms.h.

Scale() [3/4]

Geom::Scale::Scale ( Coord  x, Coord  y  )

inline

Create a scaling from two scaling factors.

Definition at line 158 of file transforms.h.

Scale() [4/4]

Geom::Scale::Scale ( Coord  s )

inlineexplicit

Create an uniform scaling from a single scaling factor.

Definition at line 160 of file transforms.h.

Member Function Documentation

identity()

static Scale Geom::Scale::identity ( )

inlinestatic

Definition at line 173 of file transforms.h.

Referenced by Geom::check_transforms(), and Inkscape::DrawingSurface::createRawContext().

inverse()

Scale Geom::Scale::inverse ( ) const

inline

Definition at line 172 of file transforms.h.

References Scale(), and vec.

Referenced by Inkscape::UI::Tools::PencilTool::_addFreehandPoint(), SPGrid::_checkOldGrid(), Inkscape::Extension::Internal::SvgBuilder::_flushText(), Inkscape::UI::Dialog::CloneTiler::apply(), Inkscape::Extension::Internal::Grid::effect(), Inkscape::Extension::Internal::Grid::effect(), file_import_pages(), insert_bounding_boxes(), Inkscape::PageManager::newDocumentPage(), SPGroup::scaleChildItemsRec(), Inkscape::UI::Dialog::DocumentProperties::set_content_scale(), SPGradient::set_gs2d_matrix(), SPPage::setDocumentRect(), Inkscape::UI::Tools::MeasureTool::setLabelText(), Inkscape::UI::Tools::MeasureTool::setPoint(), SPGrid::setPrefValues(), Inkscape::ObjectSet::setScaleAbsolute(), Inkscape::UI::Tools::MeasureTool::showInfoBox(), Inkscape::UI::Widget::Stores::snapshot_combine(), and wrap_transforms().

operator Affine()

Geom::Scale::operator Affine ( ) const

inline

Definition at line 161 of file transforms.h.

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

operator*=()

Scale & Geom::Scale::operator*= ( Scale const &  b )

inline

Definition at line 168 of file transforms.h.

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

operator==()

bool Geom::Scale::operator== ( Scale const &  o ) const

inline

Definition at line 169 of file transforms.h.

References vec.

operator[]() [1/4]

Coord & Geom::Scale::operator[] ( Dim2  d )

inline

Definition at line 166 of file transforms.h.

References vec.

operator[]() [2/4]

Coord Geom::Scale::operator[] ( Dim2  d ) const

inline

Definition at line 163 of file transforms.h.

References vec.

operator[]() [3/4]

Coord & Geom::Scale::operator[] ( unsigned  d )

inline

Definition at line 167 of file transforms.h.

References vec.

operator[]() [4/4]

Coord Geom::Scale::operator[] ( unsigned  d ) const

inline

Definition at line 164 of file transforms.h.

References vec.

vector()

Point Geom::Scale::vector ( ) const

inline

Definition at line 171 of file transforms.h.

References vec.

Referenced by Inkscape::DrawingImage::_renderItem(), Inkscape::DrawingSurface::createRawContext(), Inkscape::DrawingSurface::dimensions(), and Inkscape::PureScale::storeTransform().

Friends And Related Symbol Documentation

Point

friend class Point

friend

Definition at line 175 of file transforms.h.

pow()

Scale pow ( Scale const &  s, int  n  )

related

Specialization of exponentiation for Scale.

Definition at line 336 of file transforms.h.

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

Member Data Documentation

vec

Point Geom::Scale::vec = { 1, 1 }

private

Definition at line 151 of file transforms.h.

Referenced by inverse(), operator Affine(), operator*=(), Geom::Point::operator*=(), operator==(), operator[](), operator[](), operator[](), operator[](), and vector().

---

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

• /builds/inkscape/inkscape/src/3rdparty/2geom/include/2geom/transforms.h