本文整理汇总了C++中KisPaintDeviceSP::createRectConstIteratorNG方法的典型用法代码示例。如果您正苦于以下问题：C++ KisPaintDeviceSP::createRectConstIteratorNG方法的具体用法？C++ KisPaintDeviceSP::createRectConstIteratorNG怎么用？C++ KisPaintDeviceSP::createRectConstIteratorNG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KisPaintDeviceSP的用法示例。
在下文中一共展示了KisPaintDeviceSP::createRectConstIteratorNG方法的1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: process
void KisPixelizeFilter::process(KisPaintDeviceSP device,
const QRect& applyRect,
const KisFilterConfiguration* configuration,
KoUpdater* progressUpdater
) const
{
QPoint srcTopLeft = applyRect.topLeft();
Q_ASSERT(device);
Q_ASSERT(configuration);
qint32 width = applyRect.width();
qint32 height = applyRect.height();
//read the filter configuration values from the KisFilterConfiguration object
quint32 pixelWidth = configuration->getInt("pixelWidth", 10);
quint32 pixelHeight = configuration->getInt("pixelHeight", 10);
if (pixelWidth == 0) pixelWidth = 1;
if (pixelHeight == 0) pixelHeight = 1;
qint32 pixelSize = device->pixelSize();
QVector<qint32> average(pixelSize);
qint32 count;
if (progressUpdater) {
progressUpdater->setRange(0, applyRect.width() * applyRect.height());
}
qint32 numberOfPixelsProcessed = 0;
for (qint32 y = 0; y < height; y += pixelHeight - (y % pixelHeight)) {
qint32 h = pixelHeight;
h = qMin(h, height - y);
for (qint32 x = 0; x < width; x += pixelWidth - (x % pixelWidth)) {
qint32 w = pixelWidth;
w = qMin(w, width - x);
for (qint32 i = 0; i < pixelSize; i++) {
average[i] = 0;
}
count = 0;
//read
KisRectConstIteratorSP srcIt = device->createRectConstIteratorNG(srcTopLeft.x() + x, srcTopLeft.y() + y, w, h);
do {
for (qint32 i = 0; i < pixelSize; i++) {
average[i] += srcIt->oldRawData()[i];
}
count++;
} while (srcIt->nextPixel());
//average
if (count > 0) {
for (qint32 i = 0; i < pixelSize; i++)
average[i] /= count;
}
//write
KisRectIteratorSP dstIt = device->createRectIteratorNG(srcTopLeft.x() + x, srcTopLeft.y() + y, w, h);
do {
for (int i = 0; i < pixelSize; i++) {
dstIt->rawData()[i] = average[i];
}
} while (dstIt->nextPixel());
if (progressUpdater) progressUpdater->setValue(++numberOfPixelsProcessed);
}
}
}