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

Generates a n-blade pinWheel wipe: More...

#include <pinwheelwipe.hxx>

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

Public Member Functions

 PinWheelWipe (sal_Int32 blades)
 
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

sal_Int32 m_blades
 

Detailed Description

Generates a n-blade pinWheel wipe:

Definition at line 29 of file pinwheelwipe.hxx.

Constructor & Destructor Documentation

◆ PinWheelWipe()

slideshow::internal::PinWheelWipe::PinWheelWipe ( sal_Int32  blades)
inlineexplicit

Definition at line 32 of file pinwheelwipe.hxx.

Member Function Documentation

◆ operator()()

basegfx::B2DPolyPolygon slideshow::internal::PinWheelWipe::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).

Implements slideshow::internal::ParametricPolyPolygon.

Definition at line 28 of file pinwheelwipe.cxx.

References basegfx::B2DPolyPolygon::append(), slideshow::internal::ClockWipe::calcCenteredClock(), basegfx::utils::createRotateB2DHomMatrix(), basegfx::utils::createScaleTranslateB2DHomMatrix(), i, m_blades, p, t, and basegfx::B2DPolyPolygon::transform().

Member Data Documentation

◆ m_blades

sal_Int32 slideshow::internal::PinWheelWipe::m_blades
private

Definition at line 35 of file pinwheelwipe.hxx.

Referenced by operator()().


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