本文整理汇总了C++中KisImageSP::perspectiveGrid方法的典型用法代码示例。如果您正苦于以下问题：C++ KisImageSP::perspectiveGrid方法的具体用法？C++ KisImageSP::perspectiveGrid怎么用？C++ KisImageSP::perspectiveGrid使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类KisImageSP的用法示例。
在下文中一共展示了KisImageSP::perspectiveGrid方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: paintAt
void KisDuplicateOp::paintAt(const KisPaintInformation& info)
{
if (!painter()) return;
if (!m_duplicateStartIsSet) {
m_duplicateStartIsSet = true;
m_duplicateStart = info.pos();
}
bool heal = settings->healing();
if (!source()) return;
KisBrushSP brush = m_brush;
if (!brush) return;
if (! brush->canPaintFor(info))
return;
double scale = KisPaintOp::scaleForPressure(info.pressure());
QPointF hotSpot = brush->hotSpot(scale, scale);
QPointF pt = info.pos() - hotSpot;
// Split the coordinates into integer plus fractional parts. The integer
// is where the dab will be positioned and the fractional part determines
// the sub-pixel positioning.
qint32 x;
double xFraction;
qint32 y;
double yFraction;
splitCoordinate(pt.x(), &x, &xFraction);
splitCoordinate(pt.y(), &y, &yFraction);
xFraction = yFraction = 0.0;
QPointF srcPointF = pt - settings->offset();
QPoint srcPoint = QPoint(x - static_cast<qint32>(settings->offset().x()),
y - static_cast<qint32>(settings->offset().y()));
qint32 sw = brush->maskWidth(scale, 0.0);
qint32 sh = brush->maskHeight(scale, 0.0);
if (srcPoint.x() < 0)
srcPoint.setX(0);
if (srcPoint.y() < 0)
srcPoint.setY(0);
if (!(m_srcdev && !(*m_srcdev->colorSpace() == *source()->colorSpace()))) {
m_srcdev = new KisPaintDevice(source()->colorSpace());
}
Q_CHECK_PTR(m_srcdev);
// Perspective correction ?
KisPainter copyPainter(m_srcdev);
KisImageSP image = settings->m_image;
if (settings->perspectiveCorrection() && image && image->perspectiveGrid()->countSubGrids() == 1) {
Matrix3qreal startM = Matrix3qreal::Identity();
Matrix3qreal endM = Matrix3qreal::Identity();
// First look for the grid corresponding to the start point
KisSubPerspectiveGrid* subGridStart = *image->perspectiveGrid()->begin();
QRect r = QRect(0, 0, image->width(), image->height());
#if 1
if (subGridStart) {
startM = KisPerspectiveMath::computeMatrixTransfoFromPerspective(r, *subGridStart->topLeft(), *subGridStart->topRight(), *subGridStart->bottomLeft(), *subGridStart->bottomRight());
}
#endif
#if 1
// Second look for the grid corresponding to the end point
KisSubPerspectiveGrid* subGridEnd = *image->perspectiveGrid()->begin();
if (subGridEnd) {
endM = KisPerspectiveMath::computeMatrixTransfoToPerspective(*subGridEnd->topLeft(), *subGridEnd->topRight(), *subGridEnd->bottomLeft(), *subGridEnd->bottomRight(), r);
}
#endif
// Compute the translation in the perspective transformation space:
QPointF positionStartPaintingT = KisPerspectiveMath::matProd(endM, QPointF(m_duplicateStart));
QPointF duplicateStartPositionT = KisPerspectiveMath::matProd(endM, QPointF(m_duplicateStart) - QPointF(settings->offset()));
QPointF translat = duplicateStartPositionT - positionStartPaintingT;
KisRectIteratorPixel dstIt = m_srcdev->createRectIterator(0, 0, sw, sh);
KisRandomSubAccessorPixel srcAcc = source()->createRandomSubAccessor();
//Action
while (!dstIt.isDone()) {
if (dstIt.isSelected()) {
QPointF p = KisPerspectiveMath::matProd(startM, KisPerspectiveMath::matProd(endM, QPointF(dstIt.x() + x, dstIt.y() + y)) + translat);
srcAcc.moveTo(p);
srcAcc.sampledOldRawData(dstIt.rawData());
}
++dstIt;
}
} else {
// Or, copy the source data on the temporary device:
copyPainter.setCompositeOp(COMPOSITE_COPY);
copyPainter.bitBlt(0, 0, source(), srcPoint.x(), srcPoint.y(), sw, sh);
copyPainter.end();
}
//.........这里部分代码省略.........
示例2: showEvent
void showEvent(QShowEvent* event)
{
QWidget::showEvent(event);
cbPerspective->setEnabled( m_image && m_image->perspectiveGrid() && m_image->perspectiveGrid()->countSubGrids() == 1);
}