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<?php |
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/** |
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* JPGraph v4.0.3 |
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*/ |
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namespace Amenadiel\JpGraph\Plot; |
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use Amenadiel\JpGraph\Util; |
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/** |
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* @class AccLinePlot |
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* // Description: |
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*/ |
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class AccLinePlot extends Plot |
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{ |
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protected $plots; |
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protected $nbrplots = 0; |
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private $iStartEndZero = true; |
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/** |
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* CONSTRUCTOR. |
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* |
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* @param mixed $plots |
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*/ |
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public function __construct($plots) |
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{ |
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$this->plots = $plots; |
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$this->nbrplots = safe_count($plots); |
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$this->numpoints = $plots[0]->numpoints; |
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// Verify that all plots have the same number of data points |
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for ($i = 1; $i < $this->nbrplots; ++$i) { |
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if ($plots[$i]->numpoints != $this->numpoints) { |
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Util\JpGraphError::RaiseL(10003); //('Each plot in an accumulated lineplot must have the same number of data points',0) |
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} |
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} |
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for ($i = 0; $i < $this->nbrplots; ++$i) { |
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$this->LineInterpolate($this->plots[$i]->coords[0]); |
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} |
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} |
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/** |
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* PUBLIC METHODS. |
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* |
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* @param mixed $graph |
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*/ |
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public function Legend($graph) |
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{ |
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foreach ($this->plots as $p) { |
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$p->DoLegend($graph); |
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} |
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} |
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public function Max() |
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{ |
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list($xmax) = $this->plots[0]->Max(); |
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$nmax = 0; |
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$n = safe_count($this->plots); |
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for ($i = 0; $i < $n; ++$i) { |
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$nc = safe_count($this->plots[$i]->coords[0]); |
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$nmax = max($nmax, $nc); |
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list($x) = $this->plots[$i]->Max(); |
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$xmax = max($xmax, $x); |
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} |
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for ($i = 0; $i < $nmax; ++$i) { |
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// Get y-value for line $i by adding the |
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// individual bars from all the plots added. |
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// It would be wrong to just add the |
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// individual plots max y-value since that |
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// would in most cases give to large y-value. |
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$y = $this->plots[0]->coords[0][$i]; |
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for ($j = 1; $j < $this->nbrplots; ++$j) { |
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$y += $this->plots[$j]->coords[0][$i]; |
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} |
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$ymax[$i] = $y; |
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} |
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$ymax = max($ymax); |
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return [$xmax, $ymax]; |
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} |
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public function Min() |
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{ |
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$nmax = 0; |
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list($xmin, $ysetmin) = $this->plots[0]->Min(); |
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$n = safe_count($this->plots); |
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for ($i = 0; $i < $n; ++$i) { |
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$nc = safe_count($this->plots[$i]->coords[0]); |
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$nmax = max($nmax, $nc); |
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list($x, $y) = $this->plots[$i]->Min(); |
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$xmin = min($xmin, $x); |
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$ysetmin = min($y, $ysetmin); |
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} |
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for ($i = 0; $i < $nmax; ++$i) { |
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// Get y-value for line $i by adding the |
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// individual bars from all the plots added. |
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// It would be wrong to just add the |
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// individual plots min y-value since that |
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// would in most cases give to small y-value. |
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$y = $this->plots[0]->coords[0][$i]; |
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for ($j = 1; $j < $this->nbrplots; ++$j) { |
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$y += $this->plots[$j]->coords[0][$i]; |
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} |
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$ymin[$i] = $y; |
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} |
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$ymin = min($ysetmin, min($ymin)); |
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return [$xmin, $ymin]; |
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} |
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// Gets called before any axis are stroked |
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public function PreStrokeAdjust($graph) |
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{ |
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// If another plot type have already adjusted the |
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// offset we don't touch it. |
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// (We check for empty in case the scale is a log scale |
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// and hence doesn't contain any xlabel_offset) |
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if (empty($graph->xaxis->scale->ticks->xlabel_offset) || |
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$graph->xaxis->scale->ticks->xlabel_offset == 0) { |
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if ($this->center) { |
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++$this->numpoints; |
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$a = 0.5; |
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$b = 0.5; |
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} else { |
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$a = 0; |
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$b = 0; |
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} |
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$graph->xaxis->scale->ticks->SetXLabelOffset($a); |
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$graph->SetTextScaleOff($b); |
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$graph->xaxis->scale->ticks->SupressMinorTickMarks(); |
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} |
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} |
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public function SetInterpolateMode($aIntMode) |
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{ |
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$this->iStartEndZero = $aIntMode; |
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} |
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// Replace all '-' with an interpolated value. We use straightforward |
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// linear interpolation. If the data starts with one or several '-' they |
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// will be replaced by the the first valid data point |
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public function LineInterpolate(&$aData) |
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{ |
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$n = safe_count($aData); |
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$i = 0; |
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// If first point is undefined we will set it to the same as the first |
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// valid data |
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if ($aData[$i] === '-') { |
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// Find the first valid data |
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while ($i < $n && $aData[$i] === '-') { |
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++$i; |
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} |
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if ($i < $n) { |
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for ($j = 0; $j < $i; ++$j) { |
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if ($this->iStartEndZero) { |
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$aData[$i] = 0; |
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} else { |
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$aData[$j] = $aData[$i]; |
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} |
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} |
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} else { |
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// All '-' => Error |
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return false; |
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} |
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} |
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while ($i < $n) { |
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while ($i < $n && $aData[$i] !== '-') { |
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++$i; |
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} |
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if ($i < $n) { |
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$pstart = $i - 1; |
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// Now see how long this segment of '-' are |
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while ($i < $n && $aData[$i] === '-') { |
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++$i; |
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} |
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if ($i < $n) { |
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$pend = $i; |
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$size = $pend - $pstart; |
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$k = ($aData[$pend] - $aData[$pstart]) / $size; |
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// Replace the segment of '-' with a linear interpolated value. |
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for ($j = 1; $j < $size; ++$j) { |
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$aData[$pstart + $j] = $aData[$pstart] + $j * $k; |
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} |
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} else { |
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// There are no valid end point. The '-' goes all the way to the end |
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// In that case we just set all the remaining values the the same as the |
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// last valid data point. |
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for ($j = $pstart + 1; $j < $n; ++$j) { |
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if ($this->iStartEndZero) { |
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$aData[$j] = 0; |
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} else { |
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$aData[$j] = $aData[$pstart]; |
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} |
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} |
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} |
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} |
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} |
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return true; |
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} |
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// To avoid duplicate of line drawing code here we just |
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// change the y-values for each plot and then restore it |
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// after we have made the stroke. We must do this copy since |
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// it wouldn't be possible to create an acc line plot |
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// with the same graphs, i.e AccLinePlot(array($pl,$pl,$pl)); |
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// since this method would have a side effect. |
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public function Stroke($img, $xscale, $yscale) |
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{ |
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$img->SetLineWeight($this->weight); |
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$this->numpoints = safe_count($this->plots[0]->coords[0]); |
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// Allocate array |
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$coords[$this->nbrplots][$this->numpoints] = 0; |
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for ($i = 0; $i < $this->numpoints; ++$i) { |
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$coords[0][$i] = $this->plots[0]->coords[0][$i]; |
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$accy = $coords[0][$i]; |
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for ($j = 1; $j < $this->nbrplots; ++$j) { |
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$coords[$j][$i] = $this->plots[$j]->coords[0][$i] + $accy; |
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$accy = $coords[$j][$i]; |
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} |
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} |
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for ($j = $this->nbrplots - 1; $j >= 0; --$j) { |
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$p = $this->plots[$j]; |
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for ($i = 0; $i < $this->numpoints; ++$i) { |
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$tmp[$i] = $p->coords[0][$i]; |
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$p->coords[0][$i] = $coords[$j][$i]; |
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} |
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$p->Stroke($img, $xscale, $yscale); |
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for ($i = 0; $i < $this->numpoints; ++$i) { |
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$p->coords[0][$i] = $tmp[$i]; |
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} |
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$p->coords[0][] = $tmp; |
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} |
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} |
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} // @class |
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