Generates a clockWiseTwelve clock wipe: More...
#include <clockwipe.hxx>
Public Member Functions | |
| 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... | |
Static Public Member Functions | |
| ::basegfx::B2DPolygon | calcCenteredClock (double t, double e=1.0) |
| 0,1 to 1,1 to 1,0 to 0,-1 to -1,0 to 0,1: More... | |
Detailed Description
Generates a clockWiseTwelve clock wipe:
Definition at line 29 of file clockwipe.hxx.
Member Function Documentation
◆ calcCenteredClock()
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static |
0,1 to 1,1 to 1,0 to 0,-1 to -1,0 to 0,1:
Definition at line 29 of file clockwipe.cxx.
References basegfx::B2DPolygon::append(), p, basegfx::B2DHomMatrix::rotate(), basegfx::B2DPolygon::setClosed(), and t.
Referenced by operator()(), slideshow::internal::FanWipe::operator()(), slideshow::internal::PinWheelWipe::operator()(), and slideshow::internal::SweepWipe::operator()().
◆ operator()()
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overridevirtual |
Retrieve the poly-polygon for value t.
- Parameters
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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.
Definition at line 52 of file clockwipe.cxx.
References calcCenteredClock(), basegfx::utils::createScaleTranslateB2DHomMatrix(), t, and basegfx::B2DPolygon::transform().
The documentation for this class was generated from the following files:
