#include <kis_polygonal_gradient_shape_strategy.h>

Inheritance diagram for KisPolygonalGradientShapeStrategy:

Public Member Functions
	KisPolygonalGradientShapeStrategy (const QPainterPath &selectionPath, qreal exponent)

double	valueAt (double x, double y) const override

	~KisPolygonalGradientShapeStrategy () override

Public Member Functions inherited from KisGradientShapeStrategy
	KisGradientShapeStrategy ()

	KisGradientShapeStrategy (const QPointF &gradientVectorStart, const QPointF &gradientVectorEnd)

virtual	~KisGradientShapeStrategy ()

Static Public Member Functions
static QPointF	testingCalculatePathCenter (int numSamples, const QPainterPath &path, qreal exponent, bool searchForMax)

Private Attributes
qreal	m_exponent

qreal	m_maxWeight

qreal	m_minWeight

qreal	m_scaleCoeff

QPainterPath	m_selectionPath

Additional Inherited Members
Protected Attributes inherited from KisGradientShapeStrategy
QPointF	m_gradientVectorEnd

QPointF	m_gradientVectorStart

Detailed Description

Definition at line 17 of file kis_polygonal_gradient_shape_strategy.h.

Constructor & Destructor Documentation

◆ KisPolygonalGradientShapeStrategy()

KisPolygonalGradientShapeStrategy::KisPolygonalGradientShapeStrategy	(	const QPainterPath &	selectionPath,
		qreal	exponent )

Definition at line 357 of file kis_polygonal_gradient_shape_strategy.cpp.

    : m_exponent(exponent)
{
    m_selectionPath = simplifyPath(selectionPath, 0.01, 3.0, 100);
 
    m_maxWeight = Private::calculateMaxWeight(m_selectionPath, m_exponent, true);
    m_minWeight = Private::calculateMaxWeight(m_selectionPath, m_exponent, false);
 
    m_scaleCoeff = 1.0 / (m_maxWeight - m_minWeight);
}

References Private::calculateMaxWeight(), m_exponent, m_maxWeight, m_minWeight, m_scaleCoeff, m_selectionPath, and simplifyPath().

◆ ~KisPolygonalGradientShapeStrategy()

KisPolygonalGradientShapeStrategy::~KisPolygonalGradientShapeStrategy ( )

override

Definition at line 369 of file kis_polygonal_gradient_shape_strategy.cpp.

370{

371}

Member Function Documentation

◆ testingCalculatePathCenter()

QPointF KisPolygonalGradientShapeStrategy::testingCalculatePathCenter	(	int	numSamples,
		const QPainterPath &	path,
		qreal	exponent,
		bool	searchForMax )

static

Definition at line 386 of file kis_polygonal_gradient_shape_strategy.cpp.

{
    QPointF result;
 
    qreal extremumValue = Private::initialExtremumValue(searchForMax);
    bool success = Private::findBestStartingPoint(numSamples, path,
                                                  exponent, searchForMax,
                                                  extremumValue,
                                                  &result);
 
    if (!success) {
        dbgKrita << "WARNING: Couldn't calculate findBestStartingPoint for:";
        dbgKrita << ppVar(numSamples);
        dbgKrita << ppVar(exponent);
        dbgKrita << ppVar(searchForMax);
        dbgKrita << ppVar(path);
 
    }
 
    return result;
}

References dbgKrita, Private::findBestStartingPoint(), Private::initialExtremumValue(), and ppVar.

◆ valueAt()

double KisPolygonalGradientShapeStrategy::valueAt	(	double	x,
		double	y ) const

overridevirtual

Implements KisGradientShapeStrategy.

Definition at line 373 of file kis_polygonal_gradient_shape_strategy.cpp.

{
    QPointF pt(x, y);
    qreal value = 0.0;
 
    if (m_selectionPath.contains(pt)) {
        value = Private::getDisnormedGradientValue(pt, m_selectionPath, m_exponent);
        value =  (value - m_minWeight) * m_scaleCoeff;
    }
 
    return value;
}