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Image_Graph - Main class for the graph creation. PHP versions 4 and 5
| Author: | Jesper Veggerby <pear.nosey@veggerby.dk> |
| Copyright: | Copyright (C) 2003, 2004 Jesper Veggerby Hansen |
| License: | http://www.gnu.org/copyleft/lesser.html LGPL License 2.1 |
| Version: | CVS: $Id: Tool.php,v 1.4 2005/09/14 20:27:24 nosey Exp $ |
| Poids: | 291 lignes (10 kb) |
| Inclus ou requis: | 3 fois |
| Référencé: | 0 fois |
| Nécessite: | 0 fichiers |
Image_Graph_Tool:: (8 méthodes):
mid()
mirror()
controlPoint()
bezier()
rotate()
close2zero()
calculateArcDimensionAndCenter()
calculateLinearRegression()
Classe: Image_Graph_Tool - X-Ref
This class contains a set of tool-functions.| mid($p1, $p2) X-Ref |
| Return the average of 2 points param: double P1 1st point param: double P2 2nd point return: double The average of P1 and P2 |
| mirror($p1, $p2, $factor = 1) X-Ref |
| Mirrors P1 in P2 by a amount of Factor param: double $p1 1st point, point to mirror param: double $o2 2nd point, mirror point param: double $factor Mirror factor, 0 returns $p2, 1 returns a pure return: double $p1 mirrored in $p2 by Factor |
| controlPoint($p1, $p2, $factor, $smoothFactor = 0.75) X-Ref |
| Calculates a Bezier control point, this function must be called for BOTH X and Y coordinates (will it work for 3D coordinates!?) param: double $p1 1st point param: double $p2 Point to param: double $factor Mirror factor, 0 returns P2, 1 returns a pure return: double P1 mirrored in P2 by Factor |
| bezier($t, $p1, $p2, $p3, $p4) X-Ref |
| Calculates a Bezier point, this function must be called for BOTH X and Y coordinates (will it work for 3D coordinates!?) param: double $t A position between $p2 and $p3, value between 0 and 1 param: double $p1 Point to use for calculating control points param: double $p2 Point 1 to calculate bezier curve between param: double $p3 Point 2 to calculate bezier curve between param: double $p4 Point to use for calculating control points return: double The bezier value of the point t between $p2 and $p3 using |
| rotate($x, $y, $xc, $yc, $angle) X-Ref |
| For a given point (x,y) return a point rotated by a given angle aroung the center (xy,yc) param: int $x x coordinate of the point to rotate param: int $y y coordinate of the point to rotate param: int $xc x coordinate of the center of the rotation param: int $yc y coordinate of the center of the rotation param: int $angle angle of the rotation return: array the coordinate of the new point |
| close2zero($value, $decimal) X-Ref |
| If a number is close 0 zero (i.e. 0 within $decimal decimals) it is rounded down to zero param: double $value The value to round param: int $decimal The number of decimals return: double The value or zero if "close enough" to zero |
| calculateArcDimensionAndCenter($v1, $v2) X-Ref |
| Calculate the dimensions and center point (of gravity) for an arc param: int $v1 The angle at which the arc starts param: int $v2 The angle at which the arc ends return: array An array with the dimensions in a fraction of a circle width radius 1 'rx', 'ry' and the |
| calculateLinearRegression(&$data) X-Ref |
| Calculate linear regression on a dataset param: array $data The data to calculate regression upon return: array The slope and intersection of the "best-fit" line |
| Généré le : Sun Feb 25 10:22:19 2007 | par Balluche grâce à PHPXref 0.7 |