107 lines
3.2 KiB
PHP
107 lines
3.2 KiB
PHP
<?php
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/*
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SVG to dojox.gfx Parser
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Copyright (C) 2009 Aaron Lindsay <aclindsay@aclindsay.com>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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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 General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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class Transform {
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private $xx;
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private $xy;
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private $yx;
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private $yy;
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private $dx;
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private $dy;
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public function __construct() {
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$this->xx = 1;
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$this->xy = 0;
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$this->yx = 0;
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$this->yy = 1;
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$this->dx = 0;
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$this->dy = 0;
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}
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public function setFullMatrix($newXx, $newXy, $newYx, $newYy, $newDx, $newDy) {
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$this->xx = $newXx;
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$this->xy = $newXy;
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$this->yx = $newYx;
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$this->yy = $newYy;
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$this->dx = $newDx;
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$this->dy = $newDy;
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}
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public function getXx() { return $this->xx; }
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public function getXy() { return $this->xy; }
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public function getYx() { return $this->yx; }
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public function getYy() { return $this->yy; }
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public function getDx() { return $this->dx; }
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public function getDy() { return $this->dy; }
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public function setXx($x) { $this->xx = $x; }
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public function setXy($x) { $this->xy = $x; }
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public function setYx($x) { $this->yx = $x; }
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public function setYy($x) { $this->yy = $x; }
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public function setDx($x) { $this->dx = $x; }
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public function setDy($x) { $this->dy = $x; }
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public function setTranslate($newDx, $newDy = 0) {
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$this->setFullMatrix(1,0,0,1,$newDx, $newDy);
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}
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public function setScale($scaleX, $scaleY = -1) {
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if ($scaleY == -1)
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$scaleY = $scaleX;
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$this->setFullMatrix($scaleX, 0, 0, $scaleY, 0, 0);
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}
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public function setRotate($angle) {
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$this->setFullMatrix(cos(deg2rad($angle)), sin(deg2rad($angle)), -sin(deg2rad($angle)), cos(deg2rad($angle)), 0, 0);
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}
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public function setSkewX($angle) {
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$this->setFullMatrix(1, 0, tan(deg2rad($angle)), 1, 0, 0);
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}
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public function setSkewY($angle) {
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$this->setFullMatrix(1, tan(deg2rad($angle)), 0, 1, 0, 0);
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}
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public function applyToX($x, $y) {
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return $this->xx * $x + $this->xy * $y + $this->dx;
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}
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public function applyToY($x, $y) {
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return $this->yx * $x + $this->yy * $y + $this->dy;
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}
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//does multiplication of the form [$this]*[$other]
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//and stores the result in $this
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public function multiplyBy($other) {
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$xx = ($this->xx*$other->xx + $this->xy*$other->yx);
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$xy = ($this->xx*$other->xy + $this->xy*$other->yy);
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$dx = ($this->xx*$other->dx + $this->xy*$other->dy + $this->dx);
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$yx = ($this->yx*$other->xx + $this->yy*$other->yx);
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$yy = ($this->yx*$other->xy + $this->yy*$other->yy);
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$dy = ($this->yx*$other->yx + $this->yy*$other->dy + $this->dy);
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$this->setFullMatrix($xx, $xy, $yx, $yy, $dx, $dy);
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}
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public function isIdentity() {
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return ($this->xx == 1 && $this->xy == 0 && $this->yx == 0 && $this->yy == 1 && $this->dx == 0 && $this->dy == 0);
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}
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}
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?>
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