CCTimingFunction.cpp [plain text]
#include "config.h"
#include "cc/CCTimingFunction.h"
#include <wtf/OwnPtr.h>
namespace {
const double epsilon = 1e-6;
}
namespace WebCore {
CCTimingFunction::CCTimingFunction()
{
}
CCTimingFunction::~CCTimingFunction()
{
}
double CCTimingFunction::duration() const
{
return 1.0;
}
PassOwnPtr<CCCubicBezierTimingFunction> CCCubicBezierTimingFunction::create(double x1, double y1, double x2, double y2)
{
return adoptPtr(new CCCubicBezierTimingFunction(x1, y1, x2, y2));
}
CCCubicBezierTimingFunction::CCCubicBezierTimingFunction(double x1, double y1, double x2, double y2)
: m_curve(x1, y1, x2, y2)
{
}
CCCubicBezierTimingFunction::~CCCubicBezierTimingFunction()
{
}
float CCCubicBezierTimingFunction::getValue(double x) const
{
UnitBezier temp(m_curve);
return static_cast<float>(temp.solve(x, epsilon));
}
PassOwnPtr<CCAnimationCurve> CCCubicBezierTimingFunction::clone() const
{
return adoptPtr(new CCCubicBezierTimingFunction(*this));
}
PassOwnPtr<CCTimingFunction> CCEaseTimingFunction::create()
{
return CCCubicBezierTimingFunction::create(0.25, 0.1, 0.25, 1);
}
PassOwnPtr<CCTimingFunction> CCEaseInTimingFunction::create()
{
return CCCubicBezierTimingFunction::create(0.42, 0, 1.0, 1);
}
PassOwnPtr<CCTimingFunction> CCEaseOutTimingFunction::create()
{
return CCCubicBezierTimingFunction::create(0, 0, 0.58, 1);
}
PassOwnPtr<CCTimingFunction> CCEaseInOutTimingFunction::create()
{
return CCCubicBezierTimingFunction::create(0.42, 0, 0.58, 1);
}
}