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<?php |
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/** |
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* Copyright (C) 2020 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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* Class for measuring |
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*/ |
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class BoundingBox { |
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|
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public $x1, $x2, $y1, $y2; |
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|
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public function __construct($x1, $y1, $x2, $y2) |
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{ |
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$this->x1 = $x1; |
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$this->x2 = $x2; |
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$this->y1 = $y1; |
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$this->y2 = $y2; |
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} |
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|
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/** |
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* Returns the width of the box |
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*/ |
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public function width() |
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{ |
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return $this->x2 - $this->x1; |
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} |
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|
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/** |
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* Returns the height of the box |
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*/ |
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public function height() |
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{ |
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return $this->y2 - $this->y1; |
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} |
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|
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/** |
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* Expands the box to fit the new sides |
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*/ |
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public function grow($x1, $y1, $x2, $y2) |
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{ |
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$this->x1 = min($this->x1, $x1); |
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$this->y1 = min($this->y1, $y1); |
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$this->x2 = max($this->x2, $x2); |
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$this->y2 = max($this->y2, $y2); |
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} |
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|
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/** |
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* Expands using another BoundingBox |
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*/ |
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public function growBox(BoundingBox $box) |
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{ |
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$this->x1 = min($this->x1, $box->x1); |
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$this->y1 = min($this->y1, $box->y1); |
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$this->x2 = max($this->x2, $box->x2); |
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$this->y2 = max($this->y2, $box->y2); |
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} |
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|
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/** |
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* Moves the box by $x, $y |
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*/ |
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public function offset($x, $y) |
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{ |
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$this->x1 += $x; |
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$this->y1 += $y; |
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$this->x2 += $x; |
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$this->y2 += $y; |
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} |
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|
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/** |
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* Flips the Y-axis values |
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*/ |
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public function flipY() |
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{ |
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$tmp = $this->y1; |
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$this->y1 = -$this->y2; |
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$this->y2 = -$tmp; |
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} |
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} |
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|
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|
