File indexing completed on 2024-06-16 04:18:02

 /*
  *  SPDX-FileCopyrightText: 2014 Dmitry Kazakov <dimula73@gmail.com>
  *
  *  SPDX-License-Identifier: GPL-2.0-or-later
  */
 
 #include "kis_transform_utils.h"
 
 #include <cmath>
 #include <QPainterPath>
 #include <QTransform>
 #include <KoUnit.h>
 #include "tool_transform_args.h"
 #include "kis_paint_device.h"
 #include "kis_algebra_2d.h"
 #include "transform_transaction_properties.h"
 #include "kis_painter.h"
 
 #include <kis_transform_worker.h>
 #include <kis_perspectivetransform_worker.h>
 #include <kis_warptransform_worker.h>
 #include <kis_cage_transform_worker.h>
 #include <kis_liquify_transform_worker.h>
 
 #include "commands_new/kis_saved_commands.h"
 #include "kis_transform_mask.h"
 #include "kis_transform_mask_adapter.h"
 #include "krita_container_utils.h"
 #include "kis_selection.h"
 #include "kis_image.h"
 #include "kis_image_animation_interface.h"
 
 const int KisTransformUtils::rotationHandleVisualRadius = 12;
 const int KisTransformUtils::rotationHandleRadius = 8;
 const int KisTransformUtils::handleVisualRadius = 12;
 const int KisTransformUtils::handleRadius = 8;
 
 
 QTransform KisTransformUtils::imageToFlakeTransform(const KisCoordinatesConverter *converter)
 {
     return converter->imageToDocumentTransform() * converter->documentToFlakeTransform();
 }
 
 qreal KisTransformUtils::effectiveHandleGrabRadius(const KisCoordinatesConverter *converter)
 {
     QPointF handleRadiusPt = flakeToImage(converter, QPointF(handleRadius, handleRadius));
     return (handleRadiusPt.x() > handleRadiusPt.y()) ? handleRadiusPt.x() : handleRadiusPt.y();
 }
 
 qreal KisTransformUtils::effectiveRotationHandleGrabRadius(const KisCoordinatesConverter *converter)
 {
     QPointF handleRadiusPt = flakeToImage(converter, QPointF(rotationHandleRadius, rotationHandleRadius));
     return (handleRadiusPt.x() > handleRadiusPt.y()) ? handleRadiusPt.x() : handleRadiusPt.y();
 }
 
 qreal KisTransformUtils::scaleFromAffineMatrix(const QTransform &t) {
     return KoUnit::approxTransformScale(t);
 }
 
 qreal KisTransformUtils::scaleFromPerspectiveMatrixX(const QTransform &t, const QPointF &basePt) {
     const QPointF pt = basePt + QPointF(1.0, 0);
     return kisDistance(t.map(pt), t.map(basePt));
 }
 
 qreal KisTransformUtils::scaleFromPerspectiveMatrixY(const QTransform &t, const QPointF &basePt) {
     const QPointF pt = basePt + QPointF(0, 1.0);
     return kisDistance(t.map(pt), t.map(basePt));
 }
 
 qreal KisTransformUtils::effectiveSize(const QRectF &rc) {
     return 0.5 * (rc.width() + rc.height());
 }
 
 bool KisTransformUtils::thumbnailTooSmall(const QTransform &resultThumbTransform, const QRect &originalImageRect)
 {
     return KisAlgebra2D::minDimension(resultThumbTransform.mapRect(originalImageRect)) < 32;
 }
 
 QRectF handleRectImpl(qreal radius, const QTransform &t, const QRectF &limitingRect, const QPointF &basePoint, qreal *dOutX, qreal *dOutY) {
     const qreal handlesExtraScaleX =
         KisTransformUtils::scaleFromPerspectiveMatrixX(t, basePoint);
     const qreal handlesExtraScaleY =
         KisTransformUtils::scaleFromPerspectiveMatrixY(t, basePoint);
 
     const qreal maxD = 0.2 * KisTransformUtils::effectiveSize(limitingRect);
     const qreal dX = qMin(maxD, radius / handlesExtraScaleX);
     const qreal dY = qMin(maxD, radius / handlesExtraScaleY);
 
     QRectF handleRect(-0.5 * dX, -0.5 * dY, dX, dY);
 
     if (dOutX) {
         *dOutX = dX;
     }
 
     if (dOutY) {
         *dOutY = dY;
     }
 
     return handleRect;
 
 }
 
 QRectF KisTransformUtils::handleRect(qreal radius, const QTransform &t, const QRectF &limitingRect, qreal *dOutX, qreal *dOutY) {
     return handleRectImpl(radius, t, limitingRect, limitingRect.center(), dOutX, dOutY);
 }
 
 QRectF KisTransformUtils::handleRect(qreal radius, const QTransform &t, const QRectF &limitingRect, const QPointF &basePoint) {
     return handleRectImpl(radius, t, limitingRect, basePoint, 0, 0);
 }
 
 QPointF KisTransformUtils::clipInRect(QPointF p, QRectF r)
 {
     QPointF center = r.center();
     QPointF t = p - center;
     r.translate(- center);
 
     if (t.y() != 0) {
         if (t.x() != 0) {
             double slope = t.y() / t.x();
 
             if (t.x() < r.left()) {
                 t.setY(r.left() * slope);
                 t.setX(r.left());
             }
             else if (t.x() > r.right()) {
                 t.setY(r.right() * slope);
                 t.setX(r.right());
             }
 
             if (t.y() < r.top()) {
                 t.setX(r.top() / slope);
                 t.setY(r.top());
             }
             else if (t.y() > r.bottom()) {
                 t.setX(r.bottom() / slope);
                 t.setY(r.bottom());
             }
         }
         else {
             if (t.y() < r.top())
                 t.setY(r.top());
             else if (t.y() > r.bottom())
                 t.setY(r.bottom());
         }
     }
     else {
         if (t.x() < r.left())
             t.setX(r.left());
         else if (t.x() > r.right())
             t.setX(r.right());
     }
 
     t += center;
 
     return t;
 }
 
 KisTransformUtils::MatricesPack::MatricesPack(const ToolTransformArgs &args)
 {
     TS = QTransform::fromTranslate(-args.originalCenter().x(), -args.originalCenter().y());
     SC = QTransform::fromScale(args.scaleX(), args.scaleY());
     S.shear(0, args.shearY()); S.shear(args.shearX(), 0);
 
     if (args.mode() == ToolTransformArgs::FREE_TRANSFORM) {
         P.rotate(180. * normalizeAngle(args.aX()) / M_PI, QVector3D(1, 0, 0));
         P.rotate(180. * normalizeAngle(args.aY()) / M_PI, QVector3D(0, 1, 0));
         P.rotate(180. * normalizeAngle(args.aZ()) / M_PI, QVector3D(0, 0, 1));
         projectedP = P.toTransform(args.cameraPos().z());
     } else if (args.mode() == ToolTransformArgs::PERSPECTIVE_4POINT) {
         // see a comment in KisPerspectiveTransformStrategy::Private::transformIntoArgs()
 #if 0
         projectedP.rotate(kisRadiansToDegrees(args.aZ()));
         projectedP *= args.flattenedPerspectiveTransform();
 #else
         projectedP = args.flattenedPerspectiveTransform();
 #endif
         P = QMatrix4x4(projectedP);
     }
 
     QPointF translation = args.transformedCenter();
     T = QTransform::fromTranslate(translation.x(), translation.y());
 }
 
 QTransform KisTransformUtils::MatricesPack::finalTransform() const
 {
     return TS * SC * S * projectedP * T;
 }
 
 bool KisTransformUtils::checkImageTooBig(const QRectF &bounds, const MatricesPack &m, qreal cameraHeight)
 {
     bool imageTooBig = false;
 
     QMatrix4x4 unprojectedMatrix = QMatrix4x4(m.T) * m.P * QMatrix4x4(m.TS * m.SC * m.S);
     QVector<QPointF> points;
     points << bounds.topLeft();
     points << bounds.topRight();
     points << bounds.bottomRight();
     points << bounds.bottomLeft();
 
     Q_FOREACH (const QPointF &pt, points) {
         QVector4D v(pt.x(), pt.y(), 0, 1);
 
         v = unprojectedMatrix * v;
         qreal z = v.z() / v.w();
 
         imageTooBig = z > 1.5 * cameraHeight;
 
         if (imageTooBig) {
             break;
         }
     }
 
     return imageTooBig;
 }
 
 KisTransformWorker KisTransformUtils::createTransformWorker(const ToolTransformArgs &config,
                                                             KisPaintDeviceSP device,
                                                             KoUpdaterPtr updater,
                                                             QVector3D *transformedCenter /* OUT */)
 {
     {
         KisTransformWorker t(0,
                              config.scaleX(), config.scaleY(),
                              config.shearX(), config.shearY(),
                              config.originalCenter().x(),
                              config.originalCenter().y(),
                              config.aZ(),
                              0, // set X and Y translation
                              0, // to null for calculation
                              0,
                              config.filter());
 
         *transformedCenter = QVector3D(t.transform().map(config.originalCenter()));
     }
 
     QPointF translation = config.transformedCenter() - (*transformedCenter).toPointF();
 
     KisTransformWorker transformWorker(device,
                                        config.scaleX(), config.scaleY(),
                                        config.shearX(), config.shearY(),
                                        config.originalCenter().x(),
                                        config.originalCenter().y(),
                                        normalizeAngle(config.aZ()),
                                        translation.x(),
                                        translation.y(),
                                        updater,
                                        config.filter());
 
     return transformWorker;
 }
 
 void KisTransformUtils::transformDevice(const ToolTransformArgs &config,
                                         KisPaintDeviceSP device,
                                         KisProcessingVisitor::ProgressHelper *helper)
 {
     KisPaintDeviceSP tmp = new KisPaintDevice(*device);
     transformDevice(config, tmp, device, helper);
 }
 
 
 namespace {
 
 void transformDeviceImpl(const ToolTransformArgs &config,
                          KisPaintDeviceSP srcDevice,
                          KisPaintDeviceSP dstDevice,
                          KisProcessingVisitor::ProgressHelper *helper,
                          bool cropDst,
                          bool forceSubPixelTranslation)
 {
     if (config.mode() == ToolTransformArgs::WARP) {
         KoUpdaterPtr updater = helper->updater();
 
         KisWarpTransformWorker worker(config.warpType(),
                                       config.origPoints(),
                                       config.transfPoints(),
                                       config.alpha(),
                                       updater);
         worker.run(srcDevice, dstDevice);
     } else if (config.mode() == ToolTransformArgs::CAGE) {
         KoUpdaterPtr updater = helper->updater();
 
         dstDevice->makeCloneFromRough(srcDevice, srcDevice->extent());
 
         KisCageTransformWorker worker(srcDevice->region().boundingRect(),
                                       config.origPoints(),
                                       updater,
                                       config.pixelPrecision());
 
         worker.prepareTransform();
         worker.setTransformedCage(config.transfPoints());
         worker.run(srcDevice, dstDevice);
     } else if (config.mode() == ToolTransformArgs::LIQUIFY && config.liquifyWorker()) {
         KoUpdaterPtr updater = helper->updater();
         //FIXME:
         Q_UNUSED(updater);
 
         config.liquifyWorker()->run(srcDevice, dstDevice);
     } else if (config.mode() == ToolTransformArgs::MESH) {
         KoUpdaterPtr updater = helper->updater();
         //FIXME:
         Q_UNUSED(updater);
 
         dstDevice->clear();
         config.meshTransform()->transformMesh(srcDevice, dstDevice);
 
     } else {
         QVector3D transformedCenter;
         KoUpdaterPtr updater1 = helper->updater();
         KoUpdaterPtr updater2 = helper->updater();
 
         dstDevice->makeCloneFromRough(srcDevice, srcDevice->extent());
 
         KisTransformWorker transformWorker =
             KisTransformUtils::createTransformWorker(config, dstDevice, updater1, &transformedCenter);
 
         transformWorker.setForceSubPixelTranslation(forceSubPixelTranslation);
         transformWorker.run();
 
         KisPerspectiveTransformWorker::SampleType sampleType =
             config.filterId() == "NearestNeighbor" ?
             KisPerspectiveTransformWorker::NearestNeighbour :
             KisPerspectiveTransformWorker::Bilinear;
 
         if (config.mode() == ToolTransformArgs::FREE_TRANSFORM) {
             KisPerspectiveTransformWorker perspectiveWorker(dstDevice,
                                                             config.transformedCenter(),
                                                             config.aX(),
                                                             config.aY(),
                                                             config.cameraPos().z(),
                                                             cropDst,
                                                             updater2);
             perspectiveWorker.setForceSubPixelTranslation(forceSubPixelTranslation);
             perspectiveWorker.run(sampleType);
         } else if (config.mode() == ToolTransformArgs::PERSPECTIVE_4POINT) {
             QTransform T =
                 QTransform::fromTranslate(config.transformedCenter().x(),
                                           config.transformedCenter().y());
 
             KisPerspectiveTransformWorker perspectiveWorker(dstDevice,
                                                             T.inverted() * config.flattenedPerspectiveTransform() * T,
                                                             cropDst,
                                                             updater2);
             perspectiveWorker.setForceSubPixelTranslation(forceSubPixelTranslation);
             perspectiveWorker.run(sampleType);
         }
     }
 }
 
 }
 
 void KisTransformUtils::transformDevice(const ToolTransformArgs &config,
                                         KisPaintDeviceSP srcDevice,
                                         KisPaintDeviceSP dstDevice,
                                         KisProcessingVisitor::ProgressHelper *helper)
 {
     transformDeviceImpl(config, srcDevice, dstDevice, helper, false, false);
 }
 
 void KisTransformUtils::transformDeviceWithCroppedDst(const ToolTransformArgs &config, KisPaintDeviceSP srcDevice, KisPaintDeviceSP dstDevice, KisProcessingVisitor::ProgressHelper *helper, bool forceSubPixelTranslation)
 {
     transformDeviceImpl(config, srcDevice, dstDevice, helper, true, forceSubPixelTranslation);
 }
 
 QRect KisTransformUtils::needRect(const ToolTransformArgs &config,
                                   const QRect &rc,
                                   const QRect &srcBounds)
 {
     QRect result = rc;
 
     if (config.mode() == ToolTransformArgs::WARP) {
         KisWarpTransformWorker worker(config.warpType(),
                                       config.origPoints(),
                                       config.transfPoints(),
                                       config.alpha(),
                                       0);
 
         result = worker.approxNeedRect(rc, srcBounds);
 
     } else if (config.mode() == ToolTransformArgs::CAGE) {
         KisCageTransformWorker worker(srcBounds,
                                       config.origPoints(),
                                       0,
                                       config.pixelPrecision());
         worker.setTransformedCage(config.transfPoints());
         result = worker.approxNeedRect(rc, srcBounds);
     } else if (config.mode() == ToolTransformArgs::LIQUIFY) {
         result = config.liquifyWorker() ?
             config.liquifyWorker()->approxNeedRect(rc, srcBounds) : rc;
     } else if (config.mode() == ToolTransformArgs::MESH) {
         result = config.meshTransform()->approxNeedRect(rc);
     } else {
         KIS_ASSERT_RECOVER_NOOP(0 && "this works for non-affine transformations only!");
     }
 
     return result;
 }
 
 QRect KisTransformUtils::changeRect(const ToolTransformArgs &config,
                                     const QRect &rc)
 {
     QRect result = rc;
 
     if (config.mode() == ToolTransformArgs::WARP) {
         KisWarpTransformWorker worker(config.warpType(),
                                       config.origPoints(),
                                       config.transfPoints(),
                                       config.alpha(),
                                       0);
 
         result = worker.approxChangeRect(rc);
 
     } else if (config.mode() == ToolTransformArgs::CAGE) {
         KisCageTransformWorker worker(rc,
                                       config.origPoints(),
                                       0,
                                       config.pixelPrecision());
 
         worker.setTransformedCage(config.transfPoints());
         result = worker.approxChangeRect(rc);
     } else if (config.mode() == ToolTransformArgs::LIQUIFY) {
         result = config.liquifyWorker() ?
             config.liquifyWorker()->approxChangeRect(rc) : rc;
     } else if (config.mode() == ToolTransformArgs::MESH) {
         result = config.meshTransform()->approxChangeRect(rc);
 
     } else {
         KIS_ASSERT_RECOVER_NOOP(0 && "this works for non-affine transformations only!");
     }
 
     return result;
 }
 
 KisTransformUtils::AnchorHolder::AnchorHolder(bool enabled, ToolTransformArgs *config)
     : m_enabled(enabled),
       m_config(config)
 {
     if (!m_enabled) return;
 
     m_staticPoint = m_config->originalCenter() + m_config->rotationCenterOffset();
 
     const KisTransformUtils::MatricesPack m(*m_config);
     m_oldStaticPointInView = m.finalTransform().map(m_staticPoint);
 }
 
 KisTransformUtils::AnchorHolder::~AnchorHolder() {
     if (!m_enabled) return;
 
     const KisTransformUtils::MatricesPack m(*m_config);
     const QPointF newStaticPointInView = m.finalTransform().map(m_staticPoint);
 
     const QPointF diff = m_oldStaticPointInView - newStaticPointInView;
 
     m_config->setTransformedCenter(m_config->transformedCenter() + diff);
 }
 
 void KisTransformUtils::setDefaultWarpPoints(int pointsPerLine,
                                              const TransformTransactionProperties *transaction,
                                              ToolTransformArgs *config)
 {
     static const int DEFAULT_POINTS_PER_LINE = 3;
 
     if (pointsPerLine < 0) {
         pointsPerLine = DEFAULT_POINTS_PER_LINE;
     }
 
     int nbPoints = pointsPerLine * pointsPerLine;
     QVector<QPointF> origPoints(nbPoints);
     QVector<QPointF> transfPoints(nbPoints);
     qreal gridSpaceX, gridSpaceY;
 
     if (nbPoints == 1) {
         //there is actually no grid
         origPoints[0] = transaction->originalCenterGeometric();
         transfPoints[0] = transaction->originalCenterGeometric();
     }
     else if (nbPoints > 1) {
         gridSpaceX = transaction->originalRect().width() / (pointsPerLine - 1);
         gridSpaceY = transaction->originalRect().height() / (pointsPerLine - 1);
         double y = transaction->originalRect().top();
         for (int i = 0; i < pointsPerLine; ++i) {
             double x = transaction->originalRect().left();
             for (int j = 0 ; j < pointsPerLine; ++j) {
                 origPoints[i * pointsPerLine + j] = QPointF(x, y);
                 transfPoints[i * pointsPerLine + j] = QPointF(x, y);
                 x += gridSpaceX;
             }
             y += gridSpaceY;
         }
     }
 
     config->setDefaultPoints(nbPoints > 0);
     config->setPoints(origPoints, transfPoints);
 }
 
 ToolTransformArgs KisTransformUtils::resetArgsForMode(ToolTransformArgs::TransformMode mode,
                                                       const QString &filterId,
                                                       const TransformTransactionProperties &transaction,
                                                       KisPaintDeviceSP externalSource)
 {
     ToolTransformArgs args;
 
     args.setOriginalCenter(transaction.originalCenterGeometric());
     args.setTransformedCenter(transaction.originalCenterGeometric());
     args.setFilterId(filterId);
     args.setExternalSource(externalSource);
 
     if (mode == ToolTransformArgs::FREE_TRANSFORM) {
         args.setMode(ToolTransformArgs::FREE_TRANSFORM);
     } else if (mode == ToolTransformArgs::WARP) {
         args.setMode(ToolTransformArgs::WARP);
         KisTransformUtils::setDefaultWarpPoints(-1, &transaction, &args);
         args.setEditingTransformPoints(false);
     } else if (mode == ToolTransformArgs::CAGE) {
         args.setMode(ToolTransformArgs::CAGE);
         args.setEditingTransformPoints(true);
     } else if (mode == ToolTransformArgs::LIQUIFY) {
         args.setMode(ToolTransformArgs::LIQUIFY);
         const QRect srcRect = transaction.originalRect().toAlignedRect();
         if (!srcRect.isEmpty()) {
             args.initLiquifyTransformMode(srcRect);
         }
     } else if (mode == ToolTransformArgs::MESH) {
         args.setMode(ToolTransformArgs::MESH);
         const QRect srcRect = transaction.originalRect().toAlignedRect();
         if (!srcRect.isEmpty()) {
             *args.meshTransform() = KisBezierTransformMesh(QRectF(srcRect));
         }
     } else if (mode == ToolTransformArgs::PERSPECTIVE_4POINT) {
         args.setMode(ToolTransformArgs::PERSPECTIVE_4POINT);
     }
 
     return args;
 }
 
 bool KisTransformUtils::shouldRestartStrokeOnModeChange(ToolTransformArgs::TransformMode oldMode, ToolTransformArgs::TransformMode newMode, KisNodeList processedNodes)
 {
     bool hasExternalLayers = false;
     Q_FOREACH (KisNodeSP node, processedNodes) {
         if (node->inherits("KisShapeLayer")) {
             hasExternalLayers = true;
             break;
         }
     }
 
     bool result = false;
 
     if (hasExternalLayers) {
         result =
             (oldMode == ToolTransformArgs::FREE_TRANSFORM) !=
             (newMode == ToolTransformArgs::FREE_TRANSFORM);
     }
 
     return result;
 }
 
 void KisTransformUtils::transformAndMergeDevice(const ToolTransformArgs &config,
                                                 KisPaintDeviceSP src,
                                                 KisPaintDeviceSP dst,
                                                 KisProcessingVisitor::ProgressHelper *helper)
 {
     KoUpdaterPtr mergeUpdater = helper->updater();
 
     KisPaintDeviceSP tmp = new KisPaintDevice(src->colorSpace());
     tmp->prepareClone(src);
 
     KisTransformUtils::transformDevice(config, src, tmp, helper);
 
     QRect mergeRect = tmp->extent();
     KisPainter painter(dst);
     painter.setProgress(mergeUpdater);
     painter.bitBlt(mergeRect.topLeft(), tmp, mergeRect);
     painter.end();
 }
 
 struct TransformExtraData : public KUndo2CommandExtraData
 {
     ToolTransformArgs savedTransformArgs;
     KisNodeList rootNodes;
     KisNodeList transformedNodes;
     int transformedTime = -1;
 
     KUndo2CommandExtraData* clone() const override {
         return new TransformExtraData(*this);
     }
 };
 
 void KisTransformUtils::postProcessToplevelCommand(KUndo2Command *command, const ToolTransformArgs &args, KisNodeList rootNodes, KisNodeList processedNodes, int currentTime, const KisSavedMacroCommand *overriddenCommand)
 {
     TransformExtraData *data = new TransformExtraData();
     data->savedTransformArgs = args;
     data->rootNodes = rootNodes;
     data->transformedNodes = processedNodes;
     data->transformedTime = currentTime;
 
     command->setExtraData(data);
 
     KisSavedMacroCommand *macroCommand = dynamic_cast<KisSavedMacroCommand*>(command);
     KIS_SAFE_ASSERT_RECOVER_NOOP(macroCommand);
 
     if (overriddenCommand && macroCommand) {
         macroCommand->setOverrideInfo(overriddenCommand, {});
     }
 }
 
 bool KisTransformUtils::fetchArgsFromCommand(const KUndo2Command *command, ToolTransformArgs *args, KisNodeList *rootNodes, KisNodeList *transformedNodes, int *oldTime)
 {
     const TransformExtraData *data = dynamic_cast<const TransformExtraData*>(command->extraData());
 
     if (data) {
         *args = data->savedTransformArgs;
         *rootNodes = data->rootNodes;
         *transformedNodes = data->transformedNodes;
         *oldTime = data->transformedTime;
     }
 
     return bool(data);
 }
 
 KisNodeSP KisTransformUtils::tryOverrideRootToTransformMask(KisNodeSP root)
 {
     // we search for masks only at the first level of hierarchy,
     // all other masks are just ignored.
 
     KisNodeSP node = root->firstChild();
 
     while (node) {
         if (node->inherits("KisTransformMask") && node->isEditable()) {
             root = node;
             break;
         }
 
         node = node->nextSibling();
     }
 
     return root;
 }
 
 int KisTransformUtils::fetchCurrentImageTime(KisNodeList rootNodes)
 {
     Q_FOREACH(KisNodeSP node, rootNodes) {
         /**
          * We cannot just use projection's default bounds, because masks don't have
          * any projection
          */
         if (node && node->image()) {
             return node->image()->animationInterface()->currentTime();
         }
     }
     return -1;
 }
 
 QList<KisNodeSP> KisTransformUtils::fetchNodesList(ToolTransformArgs::TransformMode mode, KisNodeList rootNodes, bool isExternalSourcePresent, KisSelectionSP selection)
 {
     QList<KisNodeSP> result;
 
     Q_FOREACH (KisNodeSP root, rootNodes) {
         bool hasTransformMaskDescendant =
             KisLayerUtils::recursiveFindNode(root, [root] (KisNodeSP node) {
                 return node != root && node->visible() && node->inherits("KisTransformMask");
             });
 
         /// Cannot transform nodes with visible transform masks inside,
         /// this situation should have been caught either in
         /// tryOverrideRootToTransformMask or in the transform tool
         /// stroke initialization routine.
         KIS_SAFE_ASSERT_RECOVER_NOOP(!hasTransformMaskDescendant);
 
         KisNodeSP selectionNode = selection ? selection->parentNode() : 0;
 
         auto fetchFunc =
             [&result, mode, root, selectionNode] (KisNodeSP node) {
             if (node->isEditable(node == root) &&
                     (!node->inherits("KisShapeLayer") || mode == ToolTransformArgs::FREE_TRANSFORM) &&
                     !node->inherits("KisFileLayer") &&
                     !node->inherits("KisColorizeMask") &&
                     (!node->inherits("KisTransformMask") || node == root) &&
                     (!selectionNode || node != selectionNode)) {
 
                     result << node;
                 }
         };
 
         if (isExternalSourcePresent) {
             fetchFunc(root);
         } else {
             KisLayerUtils::recursiveApplyNodes(root, fetchFunc);
         }
     }
 
     return result;
 }
 
 bool KisTransformUtils::tryInitArgsFromNode(KisNodeList rootNodes, ToolTransformArgs *args)
 {
     bool result = false;
 
     Q_FOREACH(KisNodeSP node, rootNodes) {
         if (KisTransformMaskSP mask =
             dynamic_cast<KisTransformMask*>(node.data())) {
 
             KisTransformMaskParamsInterfaceSP savedParams =
                 mask->transformParams();
 
             KisTransformMaskAdapter *adapter =
                 dynamic_cast<KisTransformMaskAdapter*>(savedParams.data());
 
             if (adapter && adapter->isInitialized()) {
                 *args = *adapter->transformArgs();
                 result = true;
             }
         }
     }
 
     return result;
 }
 
 bool KisTransformUtils::tryFetchArgsFromCommandAndUndo(ToolTransformArgs *outArgs,
                                                        ToolTransformArgs::TransformMode mode,
                                                        KisNodeList currentNodes,
                                                        KisNodeList selectedNodes,
                                                        KisStrokeUndoFacade *undoFacade,
                                                        int currentTime,
                                                        QVector<KisStrokeJobData *> *undoJobs,
                                                        const KisSavedMacroCommand **overriddenCommand)
 {
     bool result = false;
 
     const KUndo2Command *lastCommand = undoFacade->lastExecutedCommand();
     KisNodeList oldRootNodes;
     KisNodeList oldTransformedNodes;
     int oldTime = -1;
 
     ToolTransformArgs args;
 
     if (lastCommand &&
         KisTransformUtils::fetchArgsFromCommand(lastCommand, &args, &oldRootNodes, &oldTransformedNodes, &oldTime) &&
         args.mode() == mode &&
         oldRootNodes == currentNodes &&
         oldTime == currentTime) {
 
         if (KritaUtils::compareListsUnordered(oldTransformedNodes, selectedNodes)) {
             args.saveContinuedState();
 
             *outArgs = args;
 
             const KisSavedMacroCommand *command = dynamic_cast<const KisSavedMacroCommand*>(lastCommand);
             KIS_SAFE_ASSERT_RECOVER_RETURN_VALUE(command, false);
 
             // the jobs are fetched as !shouldGoToHistory,
             // so there is no need to put them into
             // m_s->skippedWhileMergeCommands
             command->getCommandExecutionJobs(undoJobs, true, false);
             *overriddenCommand = command;
 
             result = true;
         }
     }
 
     return result;
 }