Differential D2250 Diff 5457 src/lib/marble/ClipPainter.cpp

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src/lib/marble/ClipPainter.cpp

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22 22​
23class ClipPainterPrivate 23​class ClipPainterPrivate
24{ 24​{
25 public: 25​public:
26 explicit ClipPainterPrivate( ClipPainter * parent ); 26​ explicit ClipPainterPrivate( ClipPainter * parent );
27 27​
28 ClipPainter * q; 28​ ClipPainter * q;
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43 // int m_debugNodeCount; 43​ // int m_debugNodeCount;
44 44​
45 QPointF m_currentPoint; 45​ QPointF m_currentPoint;
46 QPointF m_previousPoint; 46​ QPointF m_previousPoint;
47​
48​ //
49​ QPointF m_currentCrossing;
50​ QPointF m_previousCrossing;
51​
52​ int m_currentCrossingSector;
53​ int m_previousCrossingSector;
54​
55​ qreal m_currentCrossingAngle;
56​ qreal m_previousCrossingAngle;
57​
58​ bool m_hasCrossingPoint;
47 59​
48 inline int sector( const QPointF & point ) const; 60​ inline int sector( const QPointF & point ) const;
61​ inline int borderSector( const QPointF & point ) const;
62​ inline bool isClockwise(const QPointF& pointA, const QPointF& pointB) const;
63​ inline qreal calculateAngle(const QPointF& point) const ;
49 64​
50 inline QPointF clipTop( qreal m, const QPointF & point ) const; 65​ inline QPointF clipTop( qreal m, const QPointF & point ) const;
51 inline QPointF clipLeft( qreal m, const QPointF & point ) const; 66​ inline QPointF clipLeft( qreal m, const QPointF & point ) const;
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54 69​
55 inline void initClipRect(); 70​ inline void initClipRect();
56 71​
57 inline void clipPolyObject ( const QPolygonF & sourcePolygon, 72​ inline void clipPolyObject ( const QPolygonF & sourcePolygon,
58 QVector<QPolygonF> & clippedPolyObjects, 73​ QVector<QPolygonF> & clippedPolyObjects,
59 bool isClosed ); 74​ bool isClosed );
60 75​
76​ inline void clipPolygon( QPolygonF & clippedPolyObject,
77​ QVector<QPolygonF> & clippedPolyObjects,
78​ bool isClosed );
79​
61 inline void clipMultiple( QPolygonF & clippedPolyObject, 80​ inline void clipMultiple( QPolygonF & clippedPolyObject,
62 QVector<QPolygonF> & clippedPolyObjects, 81​ QVector<QPolygonF> & clippedPolyObjects,
63 bool isClosed ); 82​ bool isClosed );
64 inline void clipOnce( QPolygonF & clippedPolyObject, 83​ inline void clipOnce( QPolygonF & clippedPolyObject,
65 QVector<QPolygonF> & clippedPolyObjects, 84​ QVector<QPolygonF> & clippedPolyObjects,
66 bool isClosed ); 85​ bool isClosed );
67 inline void clipOnceCorner( QPolygonF & clippedPolyObject, 86​ inline void clipOnceCorner( QPolygonF & clippedPolyObject,
68 QVector<QPolygonF> & clippedPolyObjects, 87​ QVector<QPolygonF> & clippedPolyObjects,
69 const QPointF& corner, 88​ const QPointF& corner,
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74 const QPointF& point, 93​ const QPointF& point,
75 bool isClosed ) const; 94​ bool isClosed ) const;
76 95​
96​ inline void closePolygon( QPolygonF & clippedPolyObject,
97​ QVector<QPolygonF> & clippedPolyObjects,
98​ bool isClosed );
77 99​
78 void labelPosition( const QPolygonF & polygon, QVector<QPointF>& labelNodes, 100​
79 LabelPositionFlags labelPositionFlags); 101​ void labelPosition( const QPolygonF & polygon, QVector<QPointF>& labelNodes,
102​ LabelPositionFlags labelPositionFlags);
80 103​
81 bool pointAllowsLabel( const QPointF& point ); 104​ bool pointAllowsLabel( const QPointF& point );
82 QPointF interpolateLabelPoint( const QPointF& previousPoint, 105​ QPointF interpolateLabelPoint( const QPointF& previousPoint,
83 const QPointF& currentPoint, 106​ const QPointF& currentPoint,
84 LabelPositionFlags labelPositionFlags ); 107​ LabelPositionFlags labelPositionFlags );
85 108​
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135void ClipPainter::drawPolygon ( const QPolygonF & polygon, 158​void ClipPainter::drawPolygon ( const QPolygonF & polygon,
136 Qt::FillRule fillRule ) 159​ Qt::FillRule fillRule )
137{ 160​{
138 if ( d->m_doClip ) { 161​ if ( d->m_doClip ) {
139 d->initClipRect(); 162​ d->initClipRect();
140 QVector<QPolygonF> clippedPolyObjects; 163​ QVector<QPolygonF> clippedPolyObjects;
141 164​
142 d->clipPolyObject( polygon, clippedPolyObjects, true ); 165​ d->clipPolyObject( polygon, clippedPolyObjects, true );
143 166​
144 foreach( const QPolygonF & clippedPolyObject, clippedPolyObjects ) { 167​ foreach( const QPolygonF & clippedPolyObject, clippedPolyObjects ) {
145 if ( clippedPolyObject.size() > 2 ) { 168​ if ( clippedPolyObject.size() > 2 ) {
146 // mDebug() << "Size: " << clippedPolyObject.size(); 169​ // mDebug() << "Size: " << clippedPolyObject.size();
147 if (d->m_debugPolygonsLevel) { 170​ if (d->m_debugPolygonsLevel) {
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193 216​
194 d->clipPolyObject( polygon, clippedPolyObjects, false ); 217​ d->clipPolyObject( polygon, clippedPolyObjects, false );
195 218​
196 foreach( const QPolygonF & clippedPolyObject, clippedPolyObjects ) { 219​ foreach( const QPolygonF & clippedPolyObject, clippedPolyObjects ) {
197 if ( clippedPolyObject.size() > 1 ) { 220​ if ( clippedPolyObject.size() > 1 ) {
198 if (d->m_debugPolygonsLevel) { 221​ if (d->m_debugPolygonsLevel) {
199 QPen pen = QPainter::pen(); 222​ QPen pen = QPainter::pen();
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245 268​
246 d->clipPolyObject( polygon, clippedPolyObjects, false ); 269​ d->clipPolyObject( polygon, clippedPolyObjects, false );
247 270​
248 foreach( const QPolygonF & clippedPolyObject, clippedPolyObjects ) { 271​ foreach( const QPolygonF & clippedPolyObject, clippedPolyObjects ) {
249 if (d->m_debugPolygonsLevel) { 272​ if (d->m_debugPolygonsLevel) {
250 QPen pen = QPainter::pen(); 273​ QPen pen = QPainter::pen();
251 QPen originalPen = pen; 274​ QPen originalPen = pen;
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316 if ( currentAllowsLabel ) { 339​ if ( currentAllowsLabel ) {
317 // As polygon.size() > 0 it's ensured that it-1 exists. 340​ // As polygon.size() > 0 it's ensured that it-1 exists.
318 QPointF node = interpolateLabelPoint( polygon.at( it -1 ), polygon.at( it ), 341​ QPointF node = interpolateLabelPoint( polygon.at( it -1 ), polygon.at( it ),
319 labelPositionFlags ); 342​ labelPositionFlags );
320 if ( node != QPointF( -1.0, -1.0 ) ) { 343​ if ( node != QPointF( -1.0, -1.0 ) ) {
321 labelNodes << node; 344​ labelNodes << node;
322 } 345​ }
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336 359​
337 if ( currentAllowsLabel ) { 360​ if ( currentAllowsLabel ) {
338 QPointF node = interpolateLabelPoint( polygon.at( it + 1 ), polygon.at( it ), 361​ QPointF node = interpolateLabelPoint( polygon.at( it + 1 ), polygon.at( it ),
339 labelPositionFlags ); 362​ labelPositionFlags );
340 if ( node != QPointF( -1.0, -1.0 ) ) { 363​ if ( node != QPointF( -1.0, -1.0 ) ) {
341 labelNodes << node; 364​ labelNodes << node;
342 } 365​ }
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349bool ClipPainterPrivate::pointAllowsLabel( const QPointF& point ) 372​bool ClipPainterPrivate::pointAllowsLabel( const QPointF& point )
350{ 373​{
351 374​
352 if ( point.x() > m_labelAreaMargin && point.x() < q->viewport().width() - m_labelAreaMargin 375​ if ( point.x() > m_labelAreaMargin && point.x() < q->viewport().width() - m_labelAreaMargin
353 && point.y() > m_labelAreaMargin && point.y() < q->viewport().height() - m_labelAreaMargin ) { 376​ && point.y() > m_labelAreaMargin && point.y() < q->viewport().height() - m_labelAreaMargin ) {
354 return true; 377​ return true;
355 } 378​ }
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365 if ( labelPositionFlags.testFlag( IgnoreXMargin ) ) { 388​ if ( labelPositionFlags.testFlag( IgnoreXMargin ) ) {
366 return QPointF( -1.0, -1.0 ); 389​ return QPointF( -1.0, -1.0 );
367 } 390​ }
368 return QPointF( m_labelAreaMargin, 391​ return QPointF( m_labelAreaMargin,
369 previousPoint.y() + ( m_labelAreaMargin - previousPoint.x() ) * m ); 392​ previousPoint.y() + ( m_labelAreaMargin - previousPoint.x() ) * m );
370 } 393​ }
371 else if ( previousPoint.x() >= q->viewport().width() - m_labelAreaMargin ) { 394​ else if ( previousPoint.x() >= q->viewport().width() - m_labelAreaMargin ) {
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373 return QPointF( -1.0, -1.0 ); 396​ return QPointF( -1.0, -1.0 );
374 } 397​ }
375 return QPointF( q->viewport().width() - m_labelAreaMargin, 398​ return QPointF( q->viewport().width() - m_labelAreaMargin,
376 previousPoint.y() - 399​ previousPoint.y() -
377 ( previousPoint.x() - q->viewport().width() + m_labelAreaMargin ) * m ); 400​ ( previousPoint.x() - q->viewport().width() + m_labelAreaMargin ) * m );
378 } 401​ }
379 402​
380 if ( previousPoint.y() <= m_labelAreaMargin ) { 403​ if ( previousPoint.y() <= m_labelAreaMargin ) {
381 if ( labelPositionFlags.testFlag( IgnoreYMargin ) ) { 404​ if ( labelPositionFlags.testFlag( IgnoreYMargin ) ) {
382 return QPointF( -1.0, -1.0 ); 405​ return QPointF( -1.0, -1.0 );
383 } 406​ }
384 return QPointF( previousPoint.x() + ( m_labelAreaMargin - previousPoint.y() ) / m, 407​ return QPointF( previousPoint.x() + ( m_labelAreaMargin - previousPoint.y() ) / m,
385 m_labelAreaMargin ); 408​ m_labelAreaMargin );
386 } 409​ }
387 else if ( previousPoint.y() >= q->viewport().height() - m_labelAreaMargin ) { 410​ else if ( previousPoint.y() >= q->viewport().height() - m_labelAreaMargin ) {
388 if ( labelPositionFlags.testFlag( IgnoreYMargin ) ) { 411​ if ( labelPositionFlags.testFlag( IgnoreYMargin ) ) {
389 return QPointF( -1.0, -1.0 ); 412​ return QPointF( -1.0, -1.0 );
390 } 413​ }
391 return QPointF( previousPoint.x() - 414​ return QPointF( previousPoint.x() -
392 ( previousPoint.y() - q->viewport().height() + m_labelAreaMargin ) / m, 415​ ( previousPoint.y() - q->viewport().height() + m_labelAreaMargin ) / m,
393 q->viewport().height() - m_labelAreaMargin ); 416​ q->viewport().height() - m_labelAreaMargin );
394 } 417​ }
395 418​
396// mDebug() << Q_FUNC_INFO << "Previous and current node position are allowed!"; 419​ // mDebug() << Q_FUNC_INFO << "Previous and current node position are allowed!";
397 420​
398 return QPointF( -1.0, -1.0 ); 421​ return QPointF( -1.0, -1.0 );
399} 422​}
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407 m_currentSector(4), 430​ m_currentSector(4),
408 m_previousSector(4), 431​ m_previousSector(4),
409 m_currentPoint(QPointF()), 432​ m_currentPoint(QPointF()),
410 m_previousPoint(QPointF()), 433​ m_previousPoint(QPointF()),
411 m_labelAreaMargin(10.0), 434​ m_labelAreaMargin(10.0),
412 m_debugPolygonsLevel(0) 435​ m_debugPolygonsLevel(0)
413{ 436​{
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416 439​
417void ClipPainterPrivate::initClipRect () 440​void ClipPainterPrivate::initClipRect ()
418{ 441​{
419 qreal penHalfWidth = q->pen().widthF() / 2.0 + 1.0; 442​ // qreal penHalfWidth = q->pen().widthF() / 2.0 + 1.0;
420 443​
421 m_left = -penHalfWidth; 444​ m_left = 20;
422 m_right = (qreal)(q->device()->width()) + penHalfWidth; 445​ m_right = (qreal)(q->device()->width()) - 20;
423 m_top = -penHalfWidth; 446​ m_top = 20;
424 m_bottom = (qreal)(q->device()->height()) + penHalfWidth; 447​ m_bottom = (qreal)(q->device()->height()) - 20;
425} 448​}
426 449​
427qreal ClipPainterPrivate::_m( const QPointF & start, const QPointF & end ) 450​qreal ClipPainterPrivate::_m( const QPointF & start, const QPointF & end )
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429 qreal divisor = end.x() - start.x(); 452​ qreal divisor = end.x() - start.x();
430 if ( std::fabs( divisor ) < 0.000001 ) { 453​ if ( std::fabs( divisor ) < 0.000001 ) {
431 // this is in screencoordinates so the difference 454​ // this is in screencoordinates so the difference
432 // between 0, 0.000001 and -0.000001 isn't visible at all 455​ // between 0, 0.000001 and -0.000001 isn't visible at all
433 divisor = 0.000001; 456​ divisor = 0.000001;
434 } 457​ }
435 458​
436 return ( end.y() - start.y() ) 459​ return ( end.y() - start.y() )
437 / divisor; 460​ / divisor;
438} 461​}
439 462​
440 463​
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487 // By adding xSector and ySector we get a 510​ // By adding xSector and ySector we get a
488 // sector number of the values shown in the ASCII-art graph above. 511​ // sector number of the values shown in the ASCII-art graph above.
489 return ySector + xSector; 512​ return ySector + xSector;
513​}
490 514​
515​// Determines that the point on which border or corner is exactly on, 4 otherwise.
516​int ClipPainterPrivate::borderSector( const QPointF & point ) const
517​{
518​ int xSector = 1;
519​ if ( point.x() == m_left )
520​ xSector = 0;
521​ else if ( point.x() == m_right )
522​ xSector = 2;
523​
524​ int ySector = 3;
525​ if ( point.y() == m_top )
526​ ySector = 0;
527​ else if ( point.y() == m_bottom )
528​ ySector = 6;
529​
530​ return ySector + xSector;
531​}
532​
533​qreal ClipPainterPrivate::calculateAngle(const QPointF& point) const
534​{
535​ QPointF middlePoint((m_left + m_right)/2.0, -(m_top + m_bottom)/2.0);
536​
537​ qreal angle = atan2(-point.y() - middlePoint.y(), point.x() - middlePoint.x()) * RAD2DEG;
538​
539​ //if(angle < 0) angle += 360.0;
540​
541​ return angle;
542​}
543​
544​bool ClipPainterPrivate::isClockwise(const QPointF& pointA, const QPointF& pointB) const
545​{
546​ QPointF middlePoint((m_left + m_right)/2.0, -(m_top + m_bottom)/2.0);
547​
548​ QPointF vecA(QPointF(pointA.x(), -pointA.y()) - middlePoint);
549​ QPointF vecB(QPointF(pointB.x(), -pointB.y()) - middlePoint);
550​
551​ qreal angle = atan2(vecA.x()*vecB.y() - vecB.x()*vecA.y(), vecA.x()*vecB.x() + vecA.y()*vecB.y()) * RAD2DEG;
552​ mDebug() << "isClockwise angle:" << angle;
553​ return angle < 0;
491} 554​}
492 555​
493void ClipPainterPrivate::clipPolyObject ( const QPolygonF & polygon, 556​void ClipPainterPrivate::clipPolyObject ( const QPolygonF & polygon,
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496{ 559​{
497 // mDebug() << "ClipPainter enabled." ; 560​ // mDebug() << "ClipPainter enabled." ;
498 561​
499 // Only create a new polyObject as soon as we know for sure that 562​ // Only create a new polyObject as soon as we know for sure that
500 // the current point is on the screen. 563​ // the current point is on the screen.
501 QPolygonF clippedPolyObject = QPolygonF(); 564​ QPolygonF clippedPolyObject = QPolygonF();
502 565​
503 const QVector<QPointF>::const_iterator itStartPoint = polygon.constBegin(); 566​ const QVector<QPointF>::const_iterator itStartPoint = polygon.constBegin();
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510 573​
511 bool processingLastNode = false; 574​ bool processingLastNode = false;
512 575​
576​ m_previousCrossing = QPointF(0,0);
577​ m_previousCrossingSector = -1;
578​ m_currentCrossingSector = -1;
579​ m_previousCrossingAngle = 0;
580​ m_currentCrossingAngle = 0;
581​ m_hasCrossingPoint = false;
582​
583​ mDebug() << "\n";
584​ mDebug() << "New polygon";
513 while ( itPoint != itEndPoint ) { 585​ while ( itPoint != itEndPoint ) {
514 m_currentPoint = (*itPoint); 586​ m_currentPoint = (*itPoint);
515 // mDebug() << "m_currentPoint.x()" << m_currentPoint.x() << "m_currentPOint.y()" << m_currentPoint.y(); 587​ // mDebug() << "m_currentPoint.x()" << m_currentPoint.x() << "m_currentPOint.y()" << m_currentPoint.y();
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537 // screen but not both. Hence we only need to clip once and require 609​ // screen but not both. Hence we only need to clip once and require
538 // only one interpolation for both cases. 610​ // only one interpolation for both cases.
539 611​
540 clipOnce( clippedPolyObject, clippedPolyObjects, isClosed ); 612​ m_hasCrossingPoint = true;
541 } 613​
542 else { 614​ if(!isClosed) {
615​ clipOnce( clippedPolyObject, clippedPolyObjects, isClosed );
616​ } else {
617​ clipPolygon( clippedPolyObject, clippedPolyObjects, isClosed );
618​ }
619​
620​ } else if (!isClosed/* || m_hasCrossingPoint */) {
543 // This case mostly deals with lines that reach from one 621​ // This case mostly deals with lines that reach from one
544 // sector that is located off screen to another one that 622​ // sector that is located off screen to another one that
545 // is located off screen. In this situation the line 623​ // is located off screen. In this situation the line
546 // can get clipped once, twice, or not at all. 624​ // can get clipped once, twice, or not at all.
547 clipMultiple( clippedPolyObject, clippedPolyObjects, isClosed ); 625​ clipMultiple( clippedPolyObject, clippedPolyObjects, isClosed );
548 } 626​ }
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569 } 647​ }
570 ++itPoint; 648​ ++itPoint;
571 649​
572 if ( itPoint == itEndPoint && isClosed ) { 650​ if ( itPoint == itEndPoint && isClosed ) {
651​
652​ closePolygon(clippedPolyObject, clippedPolyObjects, isClosed);
653​
573 itPoint = itStartPoint; 654​ itPoint = itStartPoint;
574 processingLastNode = true; 655​ processingLastNode = true;
575 } 656​ }
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581 } 662​ }
582} 663​}
583 664​
665​void ClipPainterPrivate::clipPolygon( QPolygonF & clippedPolyObject,
666​ QVector<QPolygonF> & clippedPolyObjects,
667​ bool isClosed )
668​{
669​ clipOnce(clippedPolyObject, clippedPolyObjects, isClosed);
670​
671​ if (isClosed && clippedPolyObject.size() > 1) {
672​ if (m_currentSector != 4 && m_previousSector == 4) {
673​ // Disappearing
674​
675​ if(m_currentCrossingSector != -1) {
676​ m_previousCrossing = m_currentCrossing;
677​ m_currentCrossing = clippedPolyObject.last();
678​
679​ m_previousCrossingSector = m_currentCrossingSector;
680​ m_currentCrossingSector = borderSector(m_currentCrossing);
681​
682​ m_previousCrossingAngle = m_currentCrossingAngle;
683​ m_currentCrossingAngle = calculateAngle(m_currentCrossing);
684​
685​ switch (m_currentCrossingSector) {
686​ case 1:
687​ switch(m_previousCrossingSector) {
688​ case 1:
689​ break;
690​ case 5:
691​ if(borderSector(clippedPolyObject.at(clippedPolyObject.size() - 2)) != 4) {
692​ clippedPolyObject << QPointF(m_right, m_top);
693​ }
694​ break;
695​ case 7:
696​ break;
697​ case 3:
698​ break;
699​ default:
700​ break;
701​ }
702​ break;
703​ case 5:
704​ switch(m_previousCrossingSector) {
705​ case 1:
706​ break;
707​ case 5:
708​ break;
709​ case 7:
710​ break;
711​ case 3:
712​ break;
713​ default:
714​ break;
715​ }
716​
717​ break;
718​ case 7:
719​ switch(m_previousCrossingSector) {
720​ case 1:
721​ break;
722​ case 5:
723​ if(borderSector(clippedPolyObject.at(clippedPolyObject.size() - 2)) != 4) {
724​ clippedPolyObject << QPointF(m_right, m_bottom);
725​ }
726​ break;
727​ case 7:
728​ break;
729​ case 3:
730​ break;
731​ default:
732​ break;
733​ }
734​
735​ break;
736​ case 3:
737​ switch(m_previousCrossingSector) {
738​ case 1:
739​ if(borderSector(clippedPolyObject.at(clippedPolyObject.size() - 2)) != 4) {
740​ clippedPolyObject << QPointF(m_left, m_top);
741​ }
742​ break;
743​ case 5:
744​ break;
745​ case 7:
746​ break;
747​ case 3:
748​ break;
749​ default:
750​ break;
751​ }
752​
753​ break;
754​ default:
755​ break;
756​ }
757​ } else {
758​ m_currentCrossing = clippedPolyObject.last();
759​ m_currentCrossingSector = borderSector(m_currentCrossing);
760​ m_currentCrossingAngle = calculateAngle(m_currentCrossing);
761​ if(m_currentCrossingSector == borderSector(clippedPolyObject.first())) {
762​ closePolygon(clippedPolyObject, clippedPolyObjects, isClosed);
763​ }
764​ }
765​
766​ mDebug() << "Disappearing";
767​ mDebug() << "m_currentCrossingSector:" << m_currentCrossingSector;
768​ mDebug() << "m_previousCrossingSector:" << m_previousCrossingSector;
769​ mDebug() << "m_currentCrossingAngle:" << m_currentCrossingAngle;
770​ mDebug() << "m_previousCrossingAngle:" << m_previousCrossingAngle;
771​ mDebug() << "Angle delta:" << m_currentCrossingAngle - m_previousCrossingAngle;
772​ } else if (m_currentSector == 4 && m_previousSector != 4) {
773​ // Appearing
774​
775​ if(m_currentCrossingSector != -1) {
776​ m_previousCrossing = m_currentCrossing;
777​ m_currentCrossing = clippedPolyObject.last();
778​
779​ m_previousCrossingSector = m_currentCrossingSector;
780​ m_currentCrossingSector = borderSector(m_currentCrossing);
781​
782​ m_previousCrossingAngle = m_currentCrossingAngle;
783​ m_currentCrossingAngle = calculateAngle(m_currentCrossing);
784​
785​ switch (m_currentCrossingSector) {
786​ case 1:
787​ switch(m_previousCrossingSector) {
788​ case 1:
789​ if(!isClockwise(m_previousCrossing, m_currentCrossing)) {
790​ clippedPolyObject.removeLast();
791​ closePolygon(clippedPolyObject, clippedPolyObjects, isClosed);
792​ clippedPolyObjects << clippedPolyObject;
793​ clippedPolyObject = QPolygonF();
794​ clippedPolyObject << m_currentCrossing;
795​ }
796​ break;
797​ case 5:
798​ clippedPolyObject.removeLast();
799​ clippedPolyObjects << clippedPolyObject;
800​ clippedPolyObject = QPolygonF();
801​ clippedPolyObject << m_currentCrossing;
802​ break;
803​ case 7:
804​ break;
805​ case 3:
806​ clippedPolyObject.removeLast();
807​ clippedPolyObject << QPointF(m_left, m_top);
808​ clippedPolyObject << m_currentCrossing;
809​ break;
810​ default:
811​ clippedPolyObject.removeLast();
812​ closePolygon(clippedPolyObject, clippedPolyObjects, isClosed);
813​ clippedPolyObjects << clippedPolyObject;
814​ clippedPolyObject = QPolygonF();
815​ clippedPolyObject << m_currentCrossing;
816​ break;
817​ }
818​ break;
819​ case 5:
820​ switch(m_previousCrossingSector) {
821​ case 1:
822​ break;
823​ case 5:
824​ if(!isClockwise(m_previousCrossing, m_currentCrossing)) {
825​ clippedPolyObject.removeLast();
826​ closePolygon(clippedPolyObject, clippedPolyObjects, isClosed);
827​ clippedPolyObjects << clippedPolyObject;
828​ clippedPolyObject = QPolygonF();
829​ clippedPolyObject << m_currentCrossing;
830​ }
831​ break;
832​ case 7:
833​ clippedPolyObject.removeLast();
834​ clippedPolyObjects << clippedPolyObject;
835​ clippedPolyObject = QPolygonF();
836​ clippedPolyObject << m_currentCrossing;
837​ break;
838​ case 3:
839​ break;
840​ default:
841​ clippedPolyObject.removeLast();
842​ closePolygon(clippedPolyObject, clippedPolyObjects, isClosed);
843​ clippedPolyObjects << clippedPolyObject;
844​ clippedPolyObject = QPolygonF();
845​ clippedPolyObject << m_currentCrossing;
846​ break;
847​ }
848​
849​ break;
850​ case 7:
851​ switch(m_previousCrossingSector) {
852​ case 1:
853​ break;
854​ case 5:
855​ clippedPolyObject.removeLast();
856​ clippedPolyObject << QPointF(m_right, m_bottom);
857​ clippedPolyObject << m_currentCrossing;
858​ break;
859​ case 7:
860​ if(!isClockwise(m_previousCrossing, m_currentCrossing)) {
861​ clippedPolyObject.removeLast();
862​ closePolygon(clippedPolyObject, clippedPolyObjects, isClosed);
863​ clippedPolyObjects << clippedPolyObject;
864​ clippedPolyObject = QPolygonF();
865​ clippedPolyObject << m_currentCrossing;
866​ }
867​ break;
868​ case 3:
869​ clippedPolyObject.removeLast();
870​ clippedPolyObjects << clippedPolyObject;
871​ clippedPolyObject = QPolygonF();
872​ clippedPolyObject << m_currentCrossing;
873​ break;
874​ default:
875​ clippedPolyObject.removeLast();
876​ closePolygon(clippedPolyObject, clippedPolyObjects, isClosed);
877​ clippedPolyObjects << clippedPolyObject;
878​ clippedPolyObject = QPolygonF();
879​ clippedPolyObject << m_currentCrossing;
880​ break;
881​ }
882​
883​ break;
884​ case 3:
885​ switch(m_previousCrossingSector) {
886​ case 1:
887​ clippedPolyObject.removeLast();
888​ clippedPolyObjects << clippedPolyObject;
889​ clippedPolyObject = QPolygonF();
890​ clippedPolyObject << m_currentCrossing;
891​ break;
892​ case 5:
893​ clippedPolyObject.removeLast();
894​ clippedPolyObject << QPointF(m_right, m_bottom);
895​ clippedPolyObject << QPointF(m_left, m_bottom);
896​ clippedPolyObject << m_currentCrossing;
897​ break;
898​ case 7:
899​ clippedPolyObject.removeLast();
900​ clippedPolyObject << QPointF(m_left, m_bottom);
901​ clippedPolyObject << m_currentCrossing;
902​ break;
903​ case 3:
904​ if(!isClockwise(m_previousCrossing, m_currentCrossing)) {
905​ clippedPolyObject.removeLast();
906​ closePolygon(clippedPolyObject, clippedPolyObjects, isClosed);
907​ clippedPolyObjects << clippedPolyObject;
908​ clippedPolyObject = QPolygonF();
909​ clippedPolyObject << m_currentCrossing;
910​ }
911​ break;
912​ default:
913​ clippedPolyObject.removeLast();
914​ closePolygon(clippedPolyObject, clippedPolyObjects, isClosed);
915​ clippedPolyObjects << clippedPolyObject;
916​ clippedPolyObject = QPolygonF();
917​ clippedPolyObject << m_currentCrossing;
918​ break;
919​ }
920​
921​ break;
922​ default:
923​ break;
924​ }
925​
926​ } else {
927​ m_currentCrossing = clippedPolyObject.last();
928​ m_currentCrossingSector = borderSector(m_currentCrossing);
929​ m_currentCrossingAngle = calculateAngle(m_currentCrossing);
930​ }
931​
932​ mDebug() << "Appearing";
933​ mDebug() << "m_currentCrossingSector:" << m_currentCrossingSector;
934​ mDebug() << "m_previousCrossingSector:" << m_previousCrossingSector;
935​ mDebug() << "m_currentCrossingAngle:" << m_currentCrossingAngle;
936​ mDebug() << "m_previousCrossingAngle:" << m_previousCrossingAngle;
937​ mDebug() << "Angle delta:" << m_currentCrossingAngle - m_previousCrossingAngle;
938​ }
939​ }
940​}
941​
942​void ClipPainterPrivate::closePolygon( QPolygonF & clippedPolyObject,
943​ QVector<QPolygonF> & clippedPolyObjects,
944​ bool isClosed )
945​{
946​ Q_UNUSED(isClosed)
947​ Q_UNUSED(clippedPolyObjects)
948​
949​ if(!clippedPolyObject.isEmpty()) {
950​
951​ int firstPointSector = borderSector(clippedPolyObject.first());
952​
953​ switch (m_currentCrossingSector) {
954​ case 1:
955​ switch(firstPointSector) {
956​ case 1:
957​ break;
958​ case 5:
959​ clippedPolyObject << QPointF(m_right, m_top);
960​ break;
961​ case 7:
962​ clippedPolyObject << QPointF(m_right, m_top);
963​ clippedPolyObject << QPointF(m_right, m_bottom);
964​ break;
965​ case 3:
966​ break;
967​ case -1:
968​ break;
969​ default:
970​ break;
971​ }
972​ break;
973​ case 5:
974​ switch(firstPointSector) {
975​ case 1:
976​ break;
977​ case 5:
978​ break;
979​ case 7:
980​ clippedPolyObject << QPointF(m_right, m_bottom);
981​ break;
982​ case 3:
983​ break;
984​ case -1:
985​ break;
986​ default:
987​ break;
988​ }
989​
990​ break;
991​ case 7:
992​ switch(firstPointSector) {
993​ case 1:
994​ clippedPolyObject << QPointF(m_left, m_bottom);
995​ clippedPolyObject << QPointF(m_left, m_top);
996​ break;
997​ case 5:
998​ if(m_previousSector == -1) {
999​ clippedPolyObject << QPointF(m_left, m_bottom);
1000​ clippedPolyObject << QPointF(m_left, m_top);
1001​ clippedPolyObject << QPointF(m_right, m_top);
1002​ }
1003​ break;
1004​ case 7:
1005​ if(!isClockwise(m_currentCrossing, clippedPolyObject.first())) {
1006​ clippedPolyObject.removeLast();
1007​ closePolygon(clippedPolyObject, clippedPolyObjects, isClosed);
1008​ clippedPolyObjects << clippedPolyObject;
1009​ clippedPolyObject = QPolygonF();
1010​ clippedPolyObject << m_currentCrossing;
1011​ }
1012​ break;
1013​ case 3:
1014​ clippedPolyObject << QPointF(m_left, m_bottom);
1015​ break;
1016​ case -1:
1017​ break;
1018​ default:
1019​ break;
1020​ }
1021​
1022​ break;
1023​ case 3:
1024​ switch(firstPointSector) {
1025​ case 1:
1026​ clippedPolyObject << QPointF(m_left, m_top);
1027​ break;
1028​ case 5:
1029​ clippedPolyObject << QPointF(m_left, m_top);
1030​ clippedPolyObject << QPointF(m_right, m_top);
1031​ break;
1032​ case 7:
1033​ if(m_previousSector == -1) {
1034​ clippedPolyObject << QPointF(m_left, m_top);
1035​ clippedPolyObject << QPointF(m_right, m_top);
1036​ clippedPolyObject << QPointF(m_right, m_bottom);
1037​ }
1038​ break;
1039​ case 3:
1040​ break;
1041​ default:
1042​ break;
1043​ }
1044​
1045​ break;
1046​ default:
1047​ break;
1048​ }
1049​ }
1050​}
1051​
1052​
584 1053​
585void ClipPainterPrivate::clipMultiple( QPolygonF & clippedPolyObject, 1054​void ClipPainterPrivate::clipMultiple( QPolygonF & clippedPolyObject,
586 QVector<QPolygonF> & clippedPolyObjects, 1055​ QVector<QPolygonF> & clippedPolyObjects,
Context not available.
589 Q_UNUSED( clippedPolyObjects ) 1058​ Q_UNUSED( clippedPolyObjects )
590 Q_UNUSED( isClosed ) 1059​ Q_UNUSED( isClosed )
591 1060​
592 // Take care of adding nodes in the image corners if the iterator 1061​ // Take care of adding nodes in the image corners if the iterator
593 // traverses off screen sections. 1062​ // traverses off screen sections.
594 1063​
595 qreal m = _m( m_previousPoint, m_currentPoint ); 1064​ qreal m = _m( m_previousPoint, m_currentPoint );
Context not available.
608 } 1077​ }
609 if ( pointTop.x() >= m_left && pointTop.x() < m_right ) 1078​ if ( pointTop.x() >= m_left && pointTop.x() < m_right )
610 clippedPolyObject << pointTop; 1079​ clippedPolyObject << pointTop;
611 if ( pointLeft.y() > m_top ) 1080​ if ( pointLeft.y() > m_top )
612 clippedPolyObject << pointLeft; 1081​ clippedPolyObject << pointLeft;
613 } 1082​ }
614 else if ( m_previousSector == 7 ) { 1083​ else if ( m_previousSector == 7 ) {
Context not available.
621 } else { 1090​ } else {
622 clippedPolyObject << QPointF( m_left, m_bottom ); 1091​ clippedPolyObject << QPointF( m_left, m_bottom );
623 } 1092​ }
624 if ( pointLeft.y() >= m_top && pointLeft.y() < m_bottom ) 1093​ if ( pointLeft.y() >= m_top && pointLeft.y() < m_bottom )
625 clippedPolyObject << pointLeft; 1094​ clippedPolyObject << pointLeft;
626 if ( pointTop.x() > m_left ) 1095​ if ( pointTop.x() > m_left )
627 clippedPolyObject << pointTop; 1096​ clippedPolyObject << pointTop;
Context not available.
634 1103​
635 if ( pointBottom.x() > m_left && pointBottom.x() < m_right ) 1104​ if ( pointBottom.x() > m_left && pointBottom.x() < m_right )
636 clippedPolyObject << pointBottom; 1105​ clippedPolyObject << pointBottom;
637 if ( pointRight.y() > m_top && pointRight.y() < m_bottom ) 1106​ if ( pointRight.y() > m_top && pointRight.y() < m_bottom )
638 clippedPolyObject << pointRight; 1107​ clippedPolyObject << pointRight;
639 if ( pointTop.x() > m_left && pointTop.x() < m_right ) 1108​ if ( pointTop.x() > m_left && pointTop.x() < m_right )
640 clippedPolyObject << pointTop; 1109​ clippedPolyObject << pointTop;
641 if ( pointLeft.y() > m_top && pointLeft.y() < m_bottom ) 1110​ if ( pointLeft.y() > m_top && pointLeft.y() < m_bottom )
642 clippedPolyObject << pointLeft; 1111​ clippedPolyObject << pointLeft;
643 1112​
644 if ( pointBottom.x() <= m_left && pointLeft.y() >= m_bottom ) 1113​ if ( pointBottom.x() <= m_left && pointLeft.y() >= m_bottom )
645 clippedPolyObject << QPointF( m_left, m_bottom ); 1114​ clippedPolyObject << QPointF( m_left, m_bottom );
646 if ( pointTop.x() >= m_right && pointRight.y() <= m_top ) 1115​ if ( pointTop.x() >= m_right && pointRight.y() <= m_top )
Context not available.
682 1151​
683 if ( pointBottom.x() > m_left ) 1152​ if ( pointBottom.x() > m_left )
684 clippedPolyObject << pointBottom; 1153​ clippedPolyObject << pointBottom;
685 if ( pointLeft.y() > m_top && pointLeft.y() <= m_bottom ) 1154​ if ( pointLeft.y() > m_top && pointLeft.y() <= m_bottom )
686 clippedPolyObject << pointLeft; 1155​ clippedPolyObject << pointLeft;
687 if ( pointTop.x() > m_left ) { 1156​ if ( pointTop.x() > m_left ) {
688 clippedPolyObject << pointTop; 1157​ clippedPolyObject << pointTop;
Context not available.
701 1170​
702 if ( pointBottom.x() < m_right ) 1171​ if ( pointBottom.x() < m_right )
703 clippedPolyObject << pointBottom; 1172​ clippedPolyObject << pointBottom;
704 if ( pointRight.y() > m_top && pointRight.y() <= m_bottom ) 1173​ if ( pointRight.y() > m_top && pointRight.y() <= m_bottom )
705 clippedPolyObject << pointRight; 1174​ clippedPolyObject << pointRight;
706 if ( pointTop.x() < m_right ) { 1175​ if ( pointTop.x() < m_right ) {
707 clippedPolyObject << pointTop; 1176​ clippedPolyObject << pointTop;
Context not available.
724 } 1193​ }
725 if ( pointTop.x() > m_left && pointTop.x() <= m_right ) 1194​ if ( pointTop.x() > m_left && pointTop.x() <= m_right )
726 clippedPolyObject << pointTop; 1195​ clippedPolyObject << pointTop;
727 if ( pointRight.y() > m_top ) 1196​ if ( pointRight.y() > m_top )
728 clippedPolyObject << pointRight; 1197​ clippedPolyObject << pointRight;
729 } 1198​ }
730 else if ( m_previousSector == 7 ) { 1199​ else if ( m_previousSector == 7 ) {
Context not available.
737 } else { 1206​ } else {
738 clippedPolyObject << QPointF( m_right, m_bottom ); 1207​ clippedPolyObject << QPointF( m_right, m_bottom );
739 } 1208​ }
740 if ( pointRight.y() >= m_top && pointRight.y() < m_bottom ) 1209​ if ( pointRight.y() >= m_top && pointRight.y() < m_bottom )
741 clippedPolyObject << pointRight; 1210​ clippedPolyObject << pointRight;
742 if ( pointTop.x() < m_right ) 1211​ if ( pointTop.x() < m_right )
743 clippedPolyObject << pointTop; 1212​ clippedPolyObject << pointTop;
Context not available.
750 1219​
751 if ( pointBottom.x() > m_left && pointBottom.x() < m_right ) 1220​ if ( pointBottom.x() > m_left && pointBottom.x() < m_right )
752 clippedPolyObject << pointBottom; 1221​ clippedPolyObject << pointBottom;
753 if ( pointLeft.y() > m_top && pointLeft.y() < m_bottom ) 1222​ if ( pointLeft.y() > m_top && pointLeft.y() < m_bottom )
754 clippedPolyObject << pointLeft; 1223​ clippedPolyObject << pointLeft;
755 if ( pointTop.x() > m_left && pointTop.x() < m_right ) 1224​ if ( pointTop.x() > m_left && pointTop.x() < m_right )
756 clippedPolyObject << pointTop; 1225​ clippedPolyObject << pointTop;
757 if ( pointRight.y() > m_top && pointRight.y() < m_bottom ) 1226​ if ( pointRight.y() > m_top && pointRight.y() < m_bottom )
758 clippedPolyObject << pointRight; 1227​ clippedPolyObject << pointRight;
759 1228​
760 if ( pointBottom.x() >= m_right && pointRight.y() >= m_bottom ) 1229​ if ( pointBottom.x() >= m_right && pointRight.y() >= m_bottom )
761 clippedPolyObject << QPointF( m_right, m_bottom ); 1230​ clippedPolyObject << QPointF( m_right, m_bottom );
762 if ( pointTop.x() <= m_left && pointLeft.y() <= m_top ) 1231​ if ( pointTop.x() <= m_left && pointLeft.y() <= m_top )
Context not available.
796 QPointF pointBottom = clipBottom( m, m_previousPoint ); 1265​ QPointF pointBottom = clipBottom( m, m_previousPoint );
797 QPointF pointLeft = clipLeft( m, m_currentPoint ); 1266​ QPointF pointLeft = clipLeft( m, m_currentPoint );
798 1267​
799 if ( pointRight.y() < m_bottom ) 1268​ if ( pointRight.y() < m_bottom )
800 clippedPolyObject << pointRight; 1269​ clippedPolyObject << pointRight;
801 if ( pointBottom.x() > m_left && pointBottom.x() <= m_right ) 1270​ if ( pointBottom.x() > m_left && pointBottom.x() <= m_right )
802 clippedPolyObject << pointBottom; 1271​ clippedPolyObject << pointBottom;
Context not available.
815 QPointF pointTop = clipTop( m, m_previousPoint ); 1284​ QPointF pointTop = clipTop( m, m_previousPoint );
816 QPointF pointLeft = clipLeft( m, m_currentPoint ); 1285​ QPointF pointLeft = clipLeft( m, m_currentPoint );
817 1286​
818 if ( pointRight.y() > m_top ) 1287​ if ( pointRight.y() > m_top )
819 clippedPolyObject << pointRight; 1288​ clippedPolyObject << pointRight;
820 if ( pointTop.x() > m_left && pointTop.x() <= m_right ) 1289​ if ( pointTop.x() > m_left && pointTop.x() <= m_right )
821 clippedPolyObject << pointTop; 1290​ clippedPolyObject << pointTop;
Context not available.
857 QPointF pointBottom = clipBottom( m, m_previousPoint ); 1326​ QPointF pointBottom = clipBottom( m, m_previousPoint );
858 QPointF pointRight = clipRight( m, m_currentPoint ); 1327​ QPointF pointRight = clipRight( m, m_currentPoint );
859 1328​
860 if ( pointLeft.y() < m_bottom ) 1329​ if ( pointLeft.y() < m_bottom )
861 clippedPolyObject << pointLeft; 1330​ clippedPolyObject << pointLeft;
862 if ( pointBottom.x() >= m_left && pointBottom.x() < m_right ) 1331​ if ( pointBottom.x() >= m_left && pointBottom.x() < m_right )
863 clippedPolyObject << pointBottom; 1332​ clippedPolyObject << pointBottom;
Context not available.
876 QPointF pointTop = clipTop( m, m_previousPoint ); 1345​ QPointF pointTop = clipTop( m, m_previousPoint );
877 QPointF pointRight = clipRight( m, m_currentPoint ); 1346​ QPointF pointRight = clipRight( m, m_currentPoint );
878 1347​
879 if ( pointLeft.y() > m_top ) 1348​ if ( pointLeft.y() > m_top )
880 clippedPolyObject << pointLeft; 1349​ clippedPolyObject << pointLeft;
881 if ( pointTop.x() >= m_left && pointTop.x() < m_right ) 1350​ if ( pointTop.x() >= m_left && pointTop.x() < m_right )
882 clippedPolyObject << pointTop; 1351​ clippedPolyObject << pointTop;
Context not available.
901 } 1370​ }
902 if ( pointBottom.x() >= m_left && pointBottom.x() < m_right ) 1371​ if ( pointBottom.x() >= m_left && pointBottom.x() < m_right )
903 clippedPolyObject << pointBottom; 1372​ clippedPolyObject << pointBottom;
904 if ( pointLeft.y() < m_bottom ) 1373​ if ( pointLeft.y() < m_bottom )
905 clippedPolyObject << pointLeft; 1374​ clippedPolyObject << pointLeft;
906 } 1375​ }
907 else if ( m_previousSector == 1 ) { 1376​ else if ( m_previousSector == 1 ) {
Context not available.
914 } else { 1383​ } else {
915 clippedPolyObject << QPointF( m_left, m_top ); 1384​ clippedPolyObject << QPointF( m_left, m_top );
916 } 1385​ }
917 if ( pointLeft.y() > m_top && pointLeft.y() <= m_bottom ) 1386​ if ( pointLeft.y() > m_top && pointLeft.y() <= m_bottom )
918 clippedPolyObject << pointLeft; 1387​ clippedPolyObject << pointLeft;
919 if ( pointBottom.x() > m_left ) 1388​ if ( pointBottom.x() > m_left )
920 clippedPolyObject << pointBottom; 1389​ clippedPolyObject << pointBottom;
Context not available.
925 QPointF pointBottom = clipBottom( m, m_previousPoint ); 1394​ QPointF pointBottom = clipBottom( m, m_previousPoint );
926 QPointF pointLeft = clipLeft( m, m_currentPoint ); 1395​ QPointF pointLeft = clipLeft( m, m_currentPoint );
927 1396​
928 if ( pointTop.x() > m_left && pointTop.x() < m_right ) 1397​ if ( pointTop.x() > m_left && pointTop.x() < m_right )
929 clippedPolyObject << pointTop; 1398​ clippedPolyObject << pointTop;
930 if ( pointRight.y() > m_top && pointRight.y() < m_bottom ) 1399​ if ( pointRight.y() > m_top && pointRight.y() < m_bottom )
931 clippedPolyObject << pointRight; 1400​ clippedPolyObject << pointRight;
932 if ( pointBottom.x() > m_left && pointBottom.x() < m_right ) 1401​ if ( pointBottom.x() > m_left && pointBottom.x() < m_right )
933 clippedPolyObject << pointBottom; 1402​ clippedPolyObject << pointBottom;
934 if ( pointLeft.y() > m_top && pointLeft.y() < m_bottom ) 1403​ if ( pointLeft.y() > m_top && pointLeft.y() < m_bottom )
935 clippedPolyObject << pointLeft; 1404​ clippedPolyObject << pointLeft;
936 1405​
937 if ( pointBottom.x() >= m_right && pointRight.y() >= m_bottom ) 1406​ if ( pointBottom.x() >= m_right && pointRight.y() >= m_bottom )
938 clippedPolyObject << QPointF( m_right, m_bottom ); 1407​ clippedPolyObject << QPointF( m_right, m_bottom );
939 if ( pointTop.x() <= m_left && pointLeft.y() <= m_top ) 1408​ if ( pointTop.x() <= m_left && pointLeft.y() <= m_top )
Context not available.
975 1444​
976 if ( pointTop.x() > m_left ) 1445​ if ( pointTop.x() > m_left )
977 clippedPolyObject << pointTop; 1446​ clippedPolyObject << pointTop;
978 if ( pointLeft.y() >= m_top && pointLeft.y() < m_bottom ) 1447​ if ( pointLeft.y() >= m_top && pointLeft.y() < m_bottom )
979 clippedPolyObject << pointLeft; 1448​ clippedPolyObject << pointLeft;
980 if ( pointBottom.x() > m_left ) { 1449​ if ( pointBottom.x() > m_left ) {
981 clippedPolyObject << pointBottom; 1450​ clippedPolyObject << pointBottom;
Context not available.
994 1463​
995 if ( pointTop.x() < m_right ) 1464​ if ( pointTop.x() < m_right )
996 clippedPolyObject << pointTop; 1465​ clippedPolyObject << pointTop;
997 if ( pointRight.y() >= m_top && pointRight.y() < m_bottom ) 1466​ if ( pointRight.y() >= m_top && pointRight.y() < m_bottom )
998 clippedPolyObject << pointRight; 1467​ clippedPolyObject << pointRight;
999 if ( pointBottom.x() < m_right ) { 1468​ if ( pointBottom.x() < m_right ) {
1000 clippedPolyObject << pointBottom; 1469​ clippedPolyObject << pointBottom;
Context not available.
1017 } 1486​ }
1018 if ( pointBottom.x() > m_left && pointBottom.x() <= m_right ) 1487​ if ( pointBottom.x() > m_left && pointBottom.x() <= m_right )
1019 clippedPolyObject << pointBottom; 1488​ clippedPolyObject << pointBottom;
1020 if ( pointRight.y() < m_bottom ) 1489​ if ( pointRight.y() < m_bottom )
1021 clippedPolyObject << pointRight; 1490​ clippedPolyObject << pointRight;
1022 } 1491​ }
1023 else if ( m_previousSector == 1 ) { 1492​ else if ( m_previousSector == 1 ) {
Context not available.
1030 } else { 1499​ } else {
1031 clippedPolyObject << QPointF( m_right, m_top ); 1500​ clippedPolyObject << QPointF( m_right, m_top );
1032 } 1501​ }
1033 if ( pointRight.y() > m_top && pointRight.y() <= m_bottom ) 1502​ if ( pointRight.y() > m_top && pointRight.y() <= m_bottom )
1034 clippedPolyObject << pointRight; 1503​ clippedPolyObject << pointRight;
1035 if ( pointBottom.x() < m_right ) 1504​ if ( pointBottom.x() < m_right )
1036 clippedPolyObject << pointBottom; 1505​ clippedPolyObject << pointBottom;
Context not available.
1041 QPointF pointBottom = clipBottom( m, m_previousPoint ); 1510​ QPointF pointBottom = clipBottom( m, m_previousPoint );
1042 QPointF pointRight = clipRight( m, m_previousPoint ); 1511​ QPointF pointRight = clipRight( m, m_previousPoint );
1043 1512​
1044 if ( pointTop.x() > m_left && pointTop.x() < m_right ) 1513​ if ( pointTop.x() > m_left && pointTop.x() < m_right )
1045 clippedPolyObject << pointTop; 1514​ clippedPolyObject << pointTop;
1046 if ( pointLeft.y() > m_top && pointLeft.y() < m_bottom ) 1515​ if ( pointLeft.y() > m_top && pointLeft.y() < m_bottom )
1047 clippedPolyObject << pointLeft; 1516​ clippedPolyObject << pointLeft;
1048 if ( pointBottom.x() > m_left && pointBottom.x() < m_right ) 1517​ if ( pointBottom.x() > m_left && pointBottom.x() < m_right )
1049 clippedPolyObject << pointBottom; 1518​ clippedPolyObject << pointBottom;
1050 if ( pointRight.y() > m_top && pointRight.y() < m_bottom ) 1519​ if ( pointRight.y() > m_top && pointRight.y() < m_bottom )
1051 clippedPolyObject << pointRight; 1520​ clippedPolyObject << pointRight;
1052 1521​
1053 if ( pointBottom.x() <= m_left && pointLeft.y() >= m_bottom ) 1522​ if ( pointBottom.x() <= m_left && pointLeft.y() >= m_bottom )
1054 clippedPolyObject << QPointF( m_left, m_bottom ); 1523​ clippedPolyObject << QPointF( m_left, m_bottom );
1055 if ( pointTop.x() >= m_right && pointRight.y() <= m_top ) 1524​ if ( pointTop.x() >= m_right && pointRight.y() <= m_top )
Context not available.
1060 break; 1529​ break;
1061 1530​
1062 default: 1531​ default:
1063 break; 1532​ break;
1064 } 1533​ }
1065} 1534​}
1066 1535​
1067void ClipPainterPrivate::clipOnceCorner( QPolygonF & clippedPolyObject, 1536​void ClipPainterPrivate::clipOnceCorner( QPolygonF & clippedPolyObject,
1068 QVector<QPolygonF> & clippedPolyObjects, 1537​ QVector<QPolygonF> & clippedPolyObjects,
1069 const QPointF& corner, 1538​ const QPointF& corner,
1070 const QPointF& point, 1539​ const QPointF& point,
1071 bool isClosed ) const 1540​ bool isClosed ) const
1072{ 1541​{
1073 Q_UNUSED( clippedPolyObjects ) 1542​ Q_UNUSED( clippedPolyObjects )
Context not available.
1100 // Disappearing 1569​ // Disappearing
1101 clippedPolyObject << point; 1570​ clippedPolyObject << point;
1102 if ( !isClosed ) { 1571​ if ( !isClosed ) {
1103 clippedPolyObjects << clippedPolyObject; 1572​ clippedPolyObjects << clippedPolyObject;
1573​ clippedPolyObject = QPolygonF();
1104 } 1574​ }
1105 } 1575​ }
1106} 1576​}
Context not available.
1115 // Calculating the slope. 1585​ // Calculating the slope.
1116 qreal m = _m( m_previousPoint, m_currentPoint ); 1586​ qreal m = _m( m_previousPoint, m_currentPoint );
1117 1587​
1118 // Calculate in which sector the end of the line is located that is off screen 1588​ // Calculate in which sector the end of the line is located that is off screen
1119 int offscreenpos = ( m_currentSector == 4 ) ? m_previousSector : m_currentSector; 1589​ int offscreenpos = ( m_currentSector == 4 ) ? m_previousSector : m_currentSector;
1120 1590​
1121 // "Rise over run" for all possible situations . 1591​ // "Rise over run" for all possible situations .
Context not available.
1165 clipOnceCorner( clippedPolyObject, clippedPolyObjects, QPointF( m_right, m_bottom ), point, isClosed ); 1635​ clipOnceCorner( clippedPolyObject, clippedPolyObjects, QPointF( m_right, m_bottom ), point, isClosed );
1166 break; 1636​ break;
1167 default: 1637​ default:
1168 break; 1638​ break;
1169 } 1639​ }
1170 1640​
1171} 1641​}
Context not available.