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php 數據統計圖類實例代碼詳解

編輯：關於PHP編程

<?php
/***
* 時間 2010-8-9
* www.ite5e.com
* 注意:如有什麼問題可以回帖。
* 程序最底下有調用測試代碼。
***/
define("DEFAULT_FONT_PATH", "c:/windows/fonts/simhei.ttf");
class barbarism
{
private $_x;
private $_y;
private $_h;
public $_l = 50;
private $_w = null;
private $_srcPoints = array();
private $_points = array();
public function __construct($x, $y, $h, $l = 50, $w = null)
{
$this->_x = $x;
$this->_y = $y;
$this->_h = $h;
$this->_l = $l;
$this->_w = $w;
$this->_srcPoints = $this->getSrcPoints();
$this->_points = $this->getPoints();
}
public function getSrcPoints()
{
return array(
array($this->_x , $this->_y),
array($this->_x $this->_l , $this->_y),
array($this->_x (1.35*$this->_l), $this->_y-(0.35*$this->_l)),
array($this->_x (0.35*$this->_l), $this->_y-(0.35*$this->_l)),
array($this->_x , $this->_y $this->_h),
array($this->_x $this->_l , $this->_y $this->_h),
array($this->_x (1.35*$this->_l), $this->_y $this->_h-(0.35*$this->_l))
);
}
public function getPoints()
{
$points = array();
foreach($this->_srcPoints as $key => $val)
{
$points[] = $val[0];
$points[] = $val[1];
}
return $points;
}
public function getTopPoints()
{
return array_slice($this->_points, 0, 8); //頂坐標
}
public function getBelowPoints()
{
return array_merge(array_slice($this->_points, 0, 2), array_slice($this->_points, 8, 4), array_slice($this->_points, 2, 2)); //下坐標
}
public function getRightSidePoints()
{
return array_merge(array_slice($this->_points, 2, 2), array_slice($this->_points, 10, 4), array_slice($this->_points, 4, 2)); //右側坐標
}
public function draw($image, $topColor, $belowColor, $sideColor, $borderColor = null, $type = LEFT)
{
if (is_null($borderColor))
{
$borderColor = 0xcccccc;
}
$top_rgb = $this->getRGB($topColor);
$below_rgb = $this->getRGB($belowColor);
$side_rgb = $this->getRGB($sideColor);
$top_color = imagecolorallocate($image, $top_rgb[R], $top_rgb[G], $top_rgb[B]);
$below_color = imagecolorallocate($image, $below_rgb[R], $below_rgb[G], $below_rgb[B]);
$side_color = imagecolorallocate($image, $side_rgb[R], $side_rgb[G], $side_rgb[B]);
imagefilledpolygon($image, $this->getTopPoints(), 4, $top_color); //畫頂面
imagepolygon($image, $this->getTopPoints(), 4, $borderColor); //畫頂面邊線
imagefilledpolygon($image, $this->getBelowPoints(), 4, $below_color); //畫下面
imagepolygon($image, $this->getBelowPoints(), 4, $borderColor); //畫下面邊線
if ($type == LEFT)
{
imagefilledpolygon($image, $this->getRightSidePoints(), 4, $side_color); //畫右側面
imagepolygon($image, $this->getRightSidePoints(), 4, $borderColor); //畫側面邊線
}
}
public function getRGB($color)
{
$ar = array();
$color = hexdec($color);
$ar[R] = ($color>>16) & 0xff;
$ar[G] = ($color>>8) & 0xff;
$ar[B] = ($color) & 0xff;
return $ar;
}
}
class Bardate
{
private $_W;
private $_H;
private $_bgColor = "ffffff";
private $_barHeights = array();
private $_barTexts = array();
private $_barColors = array();
public $_title;
public $_paddingTop = 30;
public $_paddingBottom = 100;
public $_paddingLeft = 45;
public $_paddingRight = 2;
public $_barL = 50;
public $image;