LibreOffice Module slideshow (master) 1
Public Member Functions | Private Attributes | List of all members
slideshow::internal::BoxSnakesWipe Class Reference

Generates a twoBoxLeft or fourBoxHorizontal wipe: More...

#include <spiralwipe.hxx>

Inheritance diagram for slideshow::internal::BoxSnakesWipe:
[legend]
Collaboration diagram for slideshow::internal::BoxSnakesWipe:
[legend]

Public Member Functions

 BoxSnakesWipe (sal_Int32 nElements, bool fourBox)
 
virtual ::basegfx::B2DPolyPolygon operator() (double t) override
 Retrieve the poly-polygon for value t. More...
 
- Public Member Functions inherited from slideshow::internal::SpiralWipe
 SpiralWipe (sal_Int32 nElements, bool flipOnYAxis=false)
 
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...
 

Private Attributes

const bool m_fourBox
 

Additional Inherited Members

- Protected Member Functions inherited from slideshow::internal::SpiralWipe
::basegfx::B2DPolyPolygon calcNegSpiral (double t) const
 
- Protected Attributes inherited from slideshow::internal::SpiralWipe
const sal_Int32 m_elements
 
const sal_Int32 m_sqrtElements
 
const bool m_flipOnYAxis
 

Detailed Description

Generates a twoBoxLeft or fourBoxHorizontal wipe:

Definition at line 44 of file spiralwipe.hxx.

Constructor & Destructor Documentation

◆ BoxSnakesWipe()

slideshow::internal::BoxSnakesWipe::BoxSnakesWipe ( sal_Int32  nElements,
bool  fourBox 
)
inline

Definition at line 47 of file spiralwipe.hxx.

References nElements.

Member Function Documentation

◆ operator()()

basegfx::B2DPolyPolygon slideshow::internal::BoxSnakesWipe::operator() ( double  t)
overridevirtual

Retrieve the poly-polygon for value t.

Parameters
tCurrent 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).

Reimplemented from slideshow::internal::SpiralWipe.

Definition at line 91 of file spiralwipe.cxx.

References basegfx::B2DPolyPolygon::append(), slideshow::internal::SpiralWipe::calcNegSpiral(), slideshow::internal::createUnitRect(), basegfx::B2DPolyPolygon::flip(), slideshow::internal::flipOnXAxis(), slideshow::internal::flipOnYAxis(), slideshow::internal::SpiralWipe::m_flipOnYAxis, m_fourBox, basegfx::B2DHomMatrix::scale(), t, and basegfx::B2DPolyPolygon::transform().

Member Data Documentation

◆ m_fourBox

const bool slideshow::internal::BoxSnakesWipe::m_fourBox
private

Definition at line 51 of file spiralwipe.hxx.

Referenced by operator()().


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