AnimBlurSlide.cpp File Reference

#include "include/core/SkBlurTypes.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColorPriv.h"
#include "include/core/SkMaskFilter.h"
#include "src/base/SkRandom.h"
#include "tools/viewer/Slide.h"
#include <iterator>

Go to the source code of this file.

Classes
class	AnimBlurSlide

Functions
SkScalar	get_anim_sin (double secs, SkScalar amplitude, SkScalar periodInSec, SkScalar phaseInSec)

Function Documentation

get_anim_sin()

SkScalar get_anim_sin	(	double	secs,
		SkScalar	amplitude,
		SkScalar	periodInSec,
		SkScalar	phaseInSec
	)

Definition at line 17 of file AnimBlurSlide.cpp.

                                                                                                  {
    if (!periodInSec) {
        return 0;
    }
    double t = secs + phaseInSec;
    t *= (2 * SK_ScalarPI) / periodInSec;
    amplitude = SK_ScalarHalf * amplitude;
    return amplitude * SkDoubleToScalar(sin(t)) + amplitude;
}