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| 411 | ////////////////////////////////////////////////////////////
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411 | ////////////////////////////////////////////////////////////
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| 412 | template <class T> |
412 | template <class T> |
| 413 | void GridRunner<T>::setup(const Grid<T> *target_grid, const QRect &rectangle) |
413 | void GridRunner<T>::setup(const Grid<T> *target_grid, const QRect &rectangle) |
| 414 | {
|
414 | {
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| 415 | QPoint upper_left = rectangle.topLeft(); |
415 | QPoint upper_left = rectangle.topLeft(); |
| - | 416 | // due to the strange behavior of QRect::bottom() and right():
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| 416 | QPoint lower_right = rectangle.bottomRight(); |
417 | QPoint lower_right = rectangle.bottomRight(); |
| 417 | mCurrent = const_cast<Grid<T> *>(target_grid)->ptr(upper_left.x(), upper_left.y()); |
418 | mCurrent = const_cast<Grid<T> *>(target_grid)->ptr(upper_left.x(), upper_left.y()); |
| 418 | mFirst = mCurrent; |
419 | mFirst = mCurrent; |
| 419 | mCurrent--; // point to first element -1 |
420 | mCurrent--; // point to first element -1 |
| 420 | mLast = const_cast<Grid<T> *>(target_grid)->ptr(lower_right.x()-1, lower_right.y()-1); |
421 | mLast = const_cast<Grid<T> *>(target_grid)->ptr(lower_right.x()-1, lower_right.y()-1); |
| Line 454... | Line 455... | ||
| 454 | 455 | ||
| 455 | template <class T> |
456 | template <class T> |
| 456 | void GridRunner<T>::neighbors4(T** rArray) |
457 | void GridRunner<T>::neighbors4(T** rArray) |
| 457 | {
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458 | {
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| 458 | // north:
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459 | // north:
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| 459 | rArray[0] = mCurrent + mCols > mLast?0: mCurrent + mCols; |
- | |
| - | 460 | rArray[0] = mCurrent + mCols + mLineLength > mLast?0: mCurrent + mCols + mLineLength; |
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| 460 | // south:
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461 | // south:
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| 461 | rArray[3] = mCurrent - mCols < mFirst?0: mCurrent - mCols; |
- | |
| - | 462 | rArray[3] = mCurrent - (mCols + mLineLength) < mFirst?0: mCurrent - (mCols + mLineLength); |
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| 462 | // east / west
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463 | // east / west
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| 463 | rArray[1] = mCurrentCol>0? mCurrent-1 : 0; |
464 | rArray[1] = mCurrentCol>0? mCurrent-1 : 0; |
| 464 | rArray[2] = mCurrentCol<mCols? mCurrent + 1 : 0; |
465 | rArray[2] = mCurrentCol<mCols? mCurrent + 1 : 0; |
| 465 | }
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466 | }
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| 466 | 467 | ||