KisScreentoneScreentoneFunctions::DotsEllipseSinusoidalEqualized Class Reference

#include <KisScreentoneScreentoneFunctions.h>

Inheritance diagram for KisScreentoneScreentoneFunctions::DotsEllipseSinusoidalEqualized:

Public Member Functions
qreal	operator() (qreal x, qreal y) const
Public Member Functions inherited from KisScreentoneScreentoneFunctions::DotsEllipseSinusoidal
qreal	operator() (qreal x, qreal y) const

Detailed Description

Definition at line 113 of file KisScreentoneScreentoneFunctions.h.

Member Function Documentation

operator()()

qreal KisScreentoneScreentoneFunctions::DotsEllipseSinusoidalEqualized::operator()	(	qreal	x,
		qreal	y ) const

Definition at line 139 of file KisScreentoneScreentoneFunctions.cpp.

{
    // Here the cumulative function is a piecewise function obtained empirically
    // by fitting some simple cubic curves to a list of points
    const qreal z = DotsEllipseSinusoidal::operator()(x, y);
    const qreal z2 = z * z;
    const qreal z3 = z * z2;
    if (z <= 0.3) {
        return 0.8795 * z3 + 0.1825 * z2 + 0.6649 * z + 0.0008;
    } else if (z <= 0.4) {
        return 32.0507 * z3 - 30.3781 * z2 + 10.6756 * z - 1.0937;
    } else if (z <= 0.5) {
        return 27.8089 * z3 - 39.4726 * z2 + 19.8992 * z - 3.0553;
    } else if (z <= 0.6) {
        return 35.1490 * z3 - 55.6810 * z2 + 30.6244 * z - 5.2839;
    } else if (z <= 0.7) {
        return 24.3210 * z3 - 50.1381 * z2 + 35.6452 * z - 7.9322;
    } else {
        return 0.7457 * z3 - 2.4792 * z2 + 3.3748 * z - 0.6402;
    }
}

References KisScreentoneScreentoneFunctions::DotsEllipseSinusoidal::operator()().

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

• plugins/generators/screentone/KisScreentoneScreentoneFunctions.h
• plugins/generators/screentone/KisScreentoneScreentoneFunctions.cpp