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<?php |
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/** |
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* Copyright (C) 2011-2022 Graham Breach |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Lesser General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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/** |
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* For more information, please contact <graham@goat1000.com> |
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*/ |
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|
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namespace Goat1000\SVGGraph; |
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|
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/** |
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* MultiRadarGraph - multiple radar graphs on one plot |
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*/ |
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class MultiRadarGraph extends RadarGraph { |
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|
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use MultiGraphTrait; |
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|
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protected function draw() |
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{ |
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$body = $this->grid() . $this->underShapes(); |
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$plots = ''; |
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|
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$datasets = $this->multi_graph->getEnabledDatasets(); |
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foreach($datasets as $i) { |
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$bnum = 0; |
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$points = []; |
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$plot = ''; |
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$line_breaks = $this->getOption(['line_breaks', $i]); |
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$y_axis = $this->y_axes[$this->main_y_axis]; |
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$first_point = null; |
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foreach($this->multi_graph[$i] as $item) { |
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if($line_breaks && $item->value === null && count($points) > 0) { |
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$plot .= $this->drawLine($i, $points, 0); |
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$points = []; |
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} else { |
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$point_pos = $this->gridPosition($item, $bnum); |
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if($item->value !== null && $point_pos !== null) { |
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$val = $y_axis->position($item->value); |
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$angle = $this->arad + $point_pos / $this->g_height; |
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$x = $this->xc + ($val * sin($angle)); |
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$y = $this->yc + ($val * cos($angle)); |
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$points[] = [$x, $y, $item, $i, $bnum]; |
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if($first_point === null) |
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$first_point = $points[0]; |
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} |
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} |
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++$bnum; |
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} |
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|
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// close graph or segment? |
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if($first_point && (!$line_breaks || $first_point[4] == 0)) { |
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$first_point[2] = null; |
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$points[] = $first_point; |
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} |
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|
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$plot .= $this->drawLine($i, $points, 0); |
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if($this->getOption('semantic_classes')) |
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$plots .= $this->element('g', ['class' => 'series'], null, $plot); |
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else |
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$plots .= $plot; |
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} |
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|
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$group = []; |
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if($this->getOption('semantic_classes')) |
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$group['class'] = 'series'; |
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$plots = $this->element('g', $group, null, $plots); |
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|
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$group = []; |
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$shadow_id = $this->defs->getShadow(); |
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if($shadow_id !== null) |
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$group['filter'] = 'url(#' . $shadow_id . ')'; |
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if(!empty($group)) |
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$plots = $this->element('g', $group, null, $plots); |
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|
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$body .= $plots; |
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$body .= $this->overShapes(); |
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$body .= $this->axes(); |
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$body .= $this->drawMarkers(); |
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return $body; |
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} |
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} |
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|
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|
