KisBezierGradientMeshDetail::QImageGradientOp Struct Reference

Public Member Functions
void	operator() (const QPolygonF &srcPolygon, const QPolygonF &dstPolygon)
void	operator() (const QPolygonF &srcPolygon, const QPolygonF &dstPolygon, const QPolygonF &clipDstPolygon)
	QImageGradientOp (const std::array< QColor, 4 > &colors, QImage &dstImage, const QPointF &dstImageOffset)

Public Attributes
const std::array< QColor, 4 > &	m_colors
QImage &	m_dstImage
QPointF	m_dstImageOffset
QRect	m_dstImageRect

Detailed Description

Definition at line 15 of file KisBezierGradientMesh.cpp.

Constructor & Destructor Documentation

QImageGradientOp()

KisBezierGradientMeshDetail::QImageGradientOp::QImageGradientOp ( const std::array< QColor, 4 > & colors, QImage & dstImage, const QPointF & dstImageOffset )

inline

Definition at line 17 of file KisBezierGradientMesh.cpp.

        : m_colors(colors), m_dstImage(dstImage),
          m_dstImageOffset(dstImageOffset),
          m_dstImageRect(m_dstImage.rect())
    {
    }

Member Function Documentation

operator()() [1/2]

void KisBezierGradientMeshDetail::QImageGradientOp::operator() ( const QPolygonF & srcPolygon, const QPolygonF & dstPolygon )

inline

Definition at line 25 of file KisBezierGradientMesh.cpp.

                                                                               {
        this->operator() (srcPolygon, dstPolygon, dstPolygon);
    }

References operator()().

operator()() [2/2]

void KisBezierGradientMeshDetail::QImageGradientOp::operator() ( const QPolygonF & srcPolygon, const QPolygonF & dstPolygon, const QPolygonF & clipDstPolygon )

inline

Definition at line 29 of file KisBezierGradientMesh.cpp.

                                                                                                                {
        QRect boundRect = clipDstPolygon.boundingRect().toAlignedRect();
        KisFourPointInterpolatorBackward interp(srcPolygon, dstPolygon);
 
        for (int y = boundRect.top(); y <= boundRect.bottom(); y++) {
            interp.setY(y);
            for (int x = boundRect.left(); x <= boundRect.right(); x++) {
 
                QPointF srcPoint(x, y);
                if (clipDstPolygon.containsPoint(srcPoint, Qt::OddEvenFill)) {
 
                    interp.setX(srcPoint.x());
                    QPointF dstPoint = interp.getValue();
 
                    // about srcPoint/dstPoint hell please see a
                    // comment in PaintDevicePolygonOp::operator() ()
 
                    srcPoint -= m_dstImageOffset;
 
                    QPoint srcPointI = srcPoint.toPoint();
 
                    if (!m_dstImageRect.contains(srcPointI)) continue;
 
                    // TODO: move vertical calculation into the upper loop
                    const QColor c1 = lerp(m_colors[0], m_colors[1], qBound(0.0, dstPoint.x(), 1.0));
                    const QColor c2 = lerp(m_colors[2], m_colors[3], qBound(0.0, dstPoint.x(), 1.0));
 
                    m_dstImage.setPixelColor(srcPointI, lerp(c1, c2, qBound(0.0, dstPoint.y(), 1.0)));
                }
            }
        }
    }

References dstPoint, interp(), KisBezierGradientMeshDetail::lerp(), m_colors, m_dstImage, m_dstImageOffset, and m_dstImageRect.

Member Data Documentation

m_colors

const std::array<QColor, 4>& KisBezierGradientMeshDetail::QImageGradientOp::m_colors

Definition at line 62 of file KisBezierGradientMesh.cpp.

m_dstImage

QImage& KisBezierGradientMeshDetail::QImageGradientOp::m_dstImage

Definition at line 63 of file KisBezierGradientMesh.cpp.

m_dstImageOffset

QPointF KisBezierGradientMeshDetail::QImageGradientOp::m_dstImageOffset

Definition at line 64 of file KisBezierGradientMesh.cpp.

m_dstImageRect

QRect KisBezierGradientMeshDetail::QImageGradientOp::m_dstImageRect

Definition at line 65 of file KisBezierGradientMesh.cpp.

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The documentation for this struct was generated from the following file:

• libs/image/KisBezierGradientMesh.cpp