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| Line 114... | Line 114... | ||
| 114 | int mSizeY; ///< count of cells in y-direction |
114 | int mSizeY; ///< count of cells in y-direction |
| 115 | int mCount; ///< total number of cells in the grid |
115 | int mCount; ///< total number of cells in the grid |
| 116 | }; |
116 | }; |
| 117 | 117 | ||
| 118 | typedef Grid<float> FloatGrid; |
118 | typedef Grid<float> FloatGrid; |
| - | 119 | ||
| - | 120 | /** @class GridRunner is a helper class to iterate over a rectangular fraction of a grid
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| - | 121 | */
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| - | 122 | template <class T> |
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| - | 123 | class GridRunner { |
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| - | 124 | public: |
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| - | 125 | GridRunner(Grid<T> &target_grid, const QRectF &rectangle); |
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| - | 126 | T* next(); ///< to to next element, return NULL if finished |
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| - | 127 | private: |
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| - | 128 | T* mLast; |
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| - | 129 | T* mCurrent; |
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| - | 130 | size_t mLineLength; |
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| - | 131 | size_t mCols; |
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| - | 132 | size_t mCurrentCol; |
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| - | 133 | }; |
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| - | 134 | ||
| 119 | 135 | ||
| 120 | // copy constructor
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136 | // copy constructor
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| 121 | template <class T> |
137 | template <class T> |
| 122 | Grid<T>::Grid(const Grid<T>& toCopy) |
138 | Grid<T>::Grid(const Grid<T>& toCopy) |
| 123 | {
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139 | {
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| Line 342... | Line 358... | ||
| 342 | template <class T> |
358 | template <class T> |
| 343 | const QPoint Grid<T>::randomPosition() const |
359 | const QPoint Grid<T>::randomPosition() const |
| 344 | {
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360 | {
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| 345 | return QPoint(irandom(0,mSizeX-1), irandom(0, mSizeY-1)); |
361 | return QPoint(irandom(0,mSizeX-1), irandom(0, mSizeY-1)); |
| 346 | }
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362 | }
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| - | 363 | ||
| - | 364 | ////////////////////////////////////////////////////////////
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| - | 365 | // grid runner
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| - | 366 | ////////////////////////////////////////////////////////////
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| - | 367 | template <class T> |
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| - | 368 | GridRunner<T>::GridRunner(Grid<T> &target_grid, const QRectF &rectangle) |
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| - | 369 | {
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| - | 370 | QPoint upper_left = target_grid.indexAt(rectangle.topLeft()); |
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| - | 371 | QPoint lower_right = target_grid.indexAt(rectangle.bottomRight()); |
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| - | 372 | mCurrent = target_grid.ptr(upper_left.x(), upper_left.y()); |
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| - | 373 | mLast = target_grid.ptr(lower_right.x()-1, lower_right.y()-1); |
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| - | 374 | mCols = lower_right.x() - upper_left.x(); // |
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| - | 375 | mLineLength = target_grid.sizeX() - mCols; |
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| - | 376 | mCurrentCol = 0; |
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| - | 377 | }
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| - | 378 | ||
| - | 379 | template <class T> |
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| - | 380 | T* GridRunner<T>::next() |
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| - | 381 | {
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| - | 382 | if (mCurrent>mLast) |
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| - | 383 | return NULL; |
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| - | 384 | T* t = mCurrent; |
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| - | 385 | mCurrent++; |
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| - | 386 | mCurrentCol++; |
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| - | 387 | if (mCurrentCol >= mCols) { |
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| - | 388 | mCurrent += mLineLength; // skip to next line |
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| - | 389 | mCurrentCol = 0; |
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| - | 390 | }
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| - | 391 | return t; |
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| - | 392 | }
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| - | 393 | ||
| 347 | ////////////////////////////////////////////////////////////
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394 | ////////////////////////////////////////////////////////////
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| 348 | // global functions
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395 | // global functions
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| 349 | ////////////////////////////////////////////////////////////
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396 | ////////////////////////////////////////////////////////////
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| 350 | 397 | ||
| 351 | /// dumps a FloatGrid to a String.
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398 | /// dumps a FloatGrid to a String.
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