! \internal This function is part of the curve optimization algorithm of \ref getCurveLines. It returns the region of the given point (\a key, \a value) with respect to a rectangle defined by \a keyMin, \a keyMax, \a valueMin, and \a valueMax. The regions are enumerated from top to bottom (\a valueMin to \a valueMax) and left to right (\a keyMin to \a keyMax): <table style="width:1
| 23267 | curve optimization algorithm, region 5 is considered to be the visible portion of the plot. |
| 23268 | */ |
| 23269 | int QCPCurve::getRegion(double key, double value, double keyMin, double valueMax, double keyMax, double valueMin) const |
| 23270 | { |
| 23271 | if (key < keyMin) // region 123 |
| 23272 | { |
| 23273 | if (value > valueMax) |
| 23274 | return 1; |
| 23275 | else if (value < valueMin) |
| 23276 | return 3; |
| 23277 | else |
| 23278 | return 2; |
| 23279 | } else if (key > keyMax) // region 789 |
| 23280 | { |
| 23281 | if (value > valueMax) |
| 23282 | return 7; |
| 23283 | else if (value < valueMin) |
| 23284 | return 9; |
| 23285 | else |
| 23286 | return 8; |
| 23287 | } else // region 456 |
| 23288 | { |
| 23289 | if (value > valueMax) |
| 23290 | return 4; |
| 23291 | else if (value < valueMin) |
| 23292 | return 6; |
| 23293 | else |
| 23294 | return 5; |
| 23295 | } |
| 23296 | } |
| 23297 | |
| 23298 | /*! \internal |
| 23299 |
nothing calls this directly
no outgoing calls
no test coverage detected