slideshow::internal::SnakeWipe Class Reference

Generates a snake wipe: More...

#include <snakewipe.hxx>

Inheritance diagram for slideshow::internal::SnakeWipe:

Collaboration diagram for slideshow::internal::SnakeWipe:

Public Member Functions
	SnakeWipe (sal_Int32 nElements, bool diagonal, bool flipOnYAxis)
virtual ::basegfx::B2DPolyPolygon	operator() (double t) override
	Retrieve the poly-polygon for value t. More...
Public Member Functions inherited from slideshow::internal::ParametricPolyPolygon
virtual	~ParametricPolyPolygon ()
virtual ::basegfx::B2DPolyPolygon	operator() (double t)=0
	Retrieve the poly-polygon for value t. More...

Protected Member Functions
::basegfx::B2DPolyPolygon	calcSnake (double t) const
::basegfx::B2DPolyPolygon	calcHalfDiagonalSnake (double t, bool in) const

Protected Attributes
const sal_Int32	m_sqrtElements
const double	m_elementEdge
const bool	m_diagonal
const bool	m_flipOnYAxis

Detailed Description

Generates a snake wipe:

Definition at line 29 of file snakewipe.hxx.

Constructor & Destructor Documentation

SnakeWipe()

slideshow::internal::SnakeWipe::SnakeWipe	(	sal_Int32	nElements,
		bool	diagonal,
		bool	flipOnYAxis
	)

Definition at line 36 of file snakewipe.cxx.

References nElements.

Member Function Documentation

calcHalfDiagonalSnake()

basegfx::B2DPolyPolygon slideshow::internal::SnakeWipe::calcHalfDiagonalSnake ( double  t, bool  in  ) const

protected

Definition at line 85 of file snakewipe.cxx.

References a, basegfx::B2DPolyPolygon::append(), basegfx::B2DPolygon::append(), basegfx::B2DPolygon::clear(), basegfx::utils::createRotateB2DHomMatrix(), basegfx::utils::createTranslateB2DHomMatrix(), d, in, m_elementEdge, m_sqrtElements, basegfx::B2DHomMatrix::rotate(), basegfx::B2DPolygon::setClosed(), t, o3tl::temporary(), basegfx::B2DPolygon::transform(), and basegfx::B2DHomMatrix::translate().

Referenced by operator()(), and slideshow::internal::ParallelSnakesWipe::operator()().

calcSnake()

basegfx::B2DPolyPolygon slideshow::internal::SnakeWipe::calcSnake ( double  t ) const

protected

Definition at line 45 of file snakewipe.cxx.

References basegfx::B2DPolyPolygon::append(), basegfx::B2DPolygon::append(), col, line, m_elementEdge, m_sqrtElements, basegfx::B2DPolygon::setClosed(), and t.

Referenced by operator()(), and slideshow::internal::ParallelSnakesWipe::operator()().

operator()()

basegfx::B2DPolyPolygon slideshow::internal::SnakeWipe::operator() ( double  t )

overridevirtual

Retrieve the poly-polygon for value t.

Parameters

t	Current parameter value to retrieve the corresponding poly-polygon for. Permissible values for t must be in the range [0,1].

Returns

a poly-polygon corresponding to the given parameter value. The poly-polygon is interpreted as living in the unit rectangle (i.e. [0,1]x[0,1]), but is not necessarily constrained to completely lie in this area (this very much depends on the actual effect to be generated). Although, from a performance perspective, it currently is advantageous to try to keep the poly-polygon within these bounds (at least if there are no hard reasons not to do so), because then reversion or out transformations are potentially faster to compute (see the TransitionInfo::meReverseMethod member in transitionfactory.cxx). Furthermore, if one of the polygon modifications involve subtraction (also see TransitionInfo::meReverseMethod), all generated polygons should be oriented clock-wise (i.e. traversing the polygon vertices with increasing vertex index should generate a clock-wise movement).

Implements slideshow::internal::ParametricPolyPolygon.

Reimplemented in slideshow::internal::ParallelSnakesWipe.

Definition at line 179 of file snakewipe.cxx.

References basegfx::B2DPolyPolygon::append(), calcHalfDiagonalSnake(), calcSnake(), slideshow::internal::flipOnYAxis(), m_diagonal, m_flipOnYAxis, and t.

Member Data Documentation

m_diagonal

const bool slideshow::internal::SnakeWipe::m_diagonal

protected

Definition at line 43 of file snakewipe.hxx.

Referenced by operator()(), and slideshow::internal::ParallelSnakesWipe::operator()().

m_elementEdge

const double slideshow::internal::SnakeWipe::m_elementEdge

protected

Definition at line 42 of file snakewipe.hxx.

Referenced by calcHalfDiagonalSnake(), and calcSnake().

m_flipOnYAxis

const bool slideshow::internal::SnakeWipe::m_flipOnYAxis

protected

Definition at line 44 of file snakewipe.hxx.

Referenced by operator()(), and slideshow::internal::ParallelSnakesWipe::operator()().

m_sqrtElements

const sal_Int32 slideshow::internal::SnakeWipe::m_sqrtElements

protected

Definition at line 41 of file snakewipe.hxx.

Referenced by calcHalfDiagonalSnake(), and calcSnake().

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

• snakewipe.hxx
• snakewipe.cxx