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伪3d绘图类

http://www.iyit.net 日期：2006-10-6 15:30:34 来源：iyit.net收集点击：

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<?php
class graph {
/**
* 伪3d绘图类
*/
var $im;
var $type = "gif"; // png,gif,jpeg,wbmp
var $xo;
var $yo;
var $color;
var $fillcolor;
var $filldarkcolor;
var $filltype = true;
var $orgx;
var $orgy;
var $viewx;
var $viewy;
var $winx;
var $winy;
var $extx = 1;
var $exty = -1;
var $ksin;
var $kcos;

function graph() {
           if(func_num_args() == 2)
                       $this->create(func_get_arc(0),func_get_arc(1));
}
/**
* 在($x,$y)处画点
*/
function pixel($x,$y) {
           $p = $this->get_view($x,$y);
           imagesetpixel($this->im,$p[x],$p[y],$this->color);
           $this->xo = $p[x];
           $this->yo = $p[y];
}
/**
* 移动到($x,$y)处
*/
function moveto($x,$y) {
           $p = $this->get_view($x,$y);
           $this->xo = $p[x];
           $this->yo = $p[y];
}
/**
* 从($x1,$y1)到($x2,$y2)处画线
*/
function line($x1,$y1,$x2,$y2) {
           $p1 = $this->get_view($x1,$y1);
           $p2 = $this->get_view($x2,$y2);
           imageline($this->im,$p1[x],$p1[y],$p2[x],$p2[y],$this->color);
}
/**
* 从当前位置到($x,$y)处画线
*/
function lineto($x,$y) {
           $p = $this->get_view($x,$y);
           imageline($this->im, $this->xo, $this->yo, $p[x], $p[y], $this->color);
           $this->xo = $p[x];
           $this->yo = $p[y];
}
/**
* 设置当前颜色
*/
function color($clr) {
           $r = ($clr>>16) & 0xff;
           $g = ($clr>>8) & 0xff;
           $b = ($clr) & 0xff;
           $this->color = imagecolorallocate($this->im, $r,$g,$b);
           $this->fillcolor = imagecolorallocate($this->im, $r,$g,$b);
           $this->filldarkcolor = imagecolorallocate($this->im, $r/2,$g/2,$b/2);
           return $this->color;
}
/**
* 设置当前充填颜色
*/
function fillcolor($clr) {
           $r = ($clr>>16) & 0xff;
           $g = ($clr>>8) & 0xff;
           $b = ($clr) & 0xff;
           $this->fillcolor = imagecolorallocate($this->im, $r,$g,$b);
           return $this->fillcolor;
}
/**
* 创建gd句柄并设置坐标系
*/
function create($x,$y) {
           $this->im = imagecreate($x,$y);
           $this->viewx = $x-1;
           $this->viewy = -($y-1);
           $this->winx = $x;
           $this->winy = $y;
           $this->orgx = 0;
           $this->orgy = 0;//$y;
           $this->colors = $this->color(0xffffff);

           settype($this->ksin,"double");
           settype($this->kcos,"double");
           $this->ksin = sin(deg2rad(0));
           $this->kcos = cos(deg2rad(0));
}
/**
* 坐标映射
*/
function get_view($x,$y) {
           $this->xo = $x*$this->kcos - $y*$this->ksin;
           $this->yo = $x*$this->ksin + $y*$this->kcos;
           $p[x] = ($this->xo + $this->orgx)*($this->viewx/$this->winx);
           $p[y] = ($this->yo + $this->orgy)*($this->viewy/$this->winy)-$this->viewy;
           return $p;
}
/**
* 设置限度
*/
function set_ext($x,$y=0) {
           $this->winx = $x;
           if($y == 0) {
                       $this->winy = - $x * $this->viewy / $this->viewx;
           }else {
                       $this->winy = $y;
           }
}
/**
* 设置旋转角
*/
function set_r($p) {
           $this->ksin = sin(deg2rad($p));
           $this->kcos = cos(deg2rad($p));
}
/**
* 构造图形，必需在派生类中重载本方法
*/
function paint() {
           /**
            * 必需由派生类重载
            * 必需包含语句 $this->create(宽度,高度);
            */
           die("paint 方法必需由派生类重载!");
}
/**
* 输出图形
*/
function run() {
           $this->paint();
           $func = "image".$this->type;
           if(! function_exists($func)) {
                       $this->type = "png";
                       $func = "image".$this->type;
           }
           header("content-type: image/{$this->type}");
           $func($this->im);
           imagedestroy($this->im);
}

/**
* 圆类图形数据生成，参数$p为坐标旋转角
*/
function get_point($ox,$oy,$w,$h,$start,$end) {
           $a = $w/2;
           $b = $h/2;
           $rs = array();
           $i = $start;
           for($i=$start;$i<=$end;$i+=5) {
                       $n = deg2rad($i);
                       $x = $a*cos($n);
                       $y = $b*sin($n);
                       $p = $this->get_view($ox+$x,$oy+$y);
                       $rs[] = $p[x];
                       $rs[] = $p[y];
                       if($i == $end) break;
                       if($i+5 > $end) $i = $end - 5;
           }
           $p = $this->get_view($ox,$oy);
           $rs[] = $p[x];
           $rs[] = $p[y];
           $rs[] = $rs[0];
           $rs[] = $rs[1];
           return $rs;
}
/**
* 弓形
*/
function chord($left,$top,$w,$h,$start,$end,$z=0) {
           $ar = $this->get_point($left,$top,$w,$h,$start,$end,$p);
           for($i=0;$i<count($ar);$i+=2) {
                       $p = $this->get_view($ar[$i],$ar[$i+1]);
                       $ar[
---------------------------------------------------------------

具体是什么错？
---------------------------------------------------------------

up
---------------------------------------------------------------

我不懂php﹐不過想接分
---------------------------------------------------------------

好东东，先试一试看看。

---------------------------------------------------------------

php是个有意思的东西，希望她一路走好
---------------------------------------------------------------

我的居然提示：
php fatal error: call to undefined function: imagecreate() in e:\jysweb\office\test\class.php on line 89

要配置......

---------------------------------------------------------------

这么长的代码，找错真是难啊：）恭喜楼主
---------------------------------------------------------------

php.ini

extension=php_gd.dll
---------------------------------------------------------------

这段代码我测试过了，本身没有什么错误！

图像是一个立体饼状图，切成了3块，还有一个十字架，左下角还有一个小桶

p.s.我的gd不支持gif,所以我用了png图
---------------------------------------------------------------

不过这个类确实写得很精致，堪称经典代码！
---------------------------------------------------------------

up
---------------------------------------------------------------

up
---------------------------------------------------------------

up
---------------------------------------------------------------

up
---------------------------------------------------------------

呵呵，每次来都可以看见楼主的身影，恭喜！
---------------------------------------------------------------

呵呵，我一运行，没晕死，出了不到10000行错误。
notice: use of undefined constant x - assumed 'x' in /home/yjj/public_html/temp/test/index.php on line 109

notice: use of undefined constant y - assumed 'y' in /home/yjj/public_html/temp/test/index.php on line 110

notice: use of undefined constant x - assumed 'x' in /home/yjj/public_html/temp/test/index.php on line 109

notice: use of undefined constant y - assumed 'y' in /home/yjj/public_html/temp/test/index.php on line 110

notice: use of undefined constant x - assumed 'x' in /home/yjj/public_html/temp/test/index.php on line 169

notice: use of undefined constant y - assumed 'y' in /home/yjj/public_html/temp/test/index.php on line 170
全是这个.
---------------------------------------------------------------

楼主很热心，恭喜~
---------------------------------------------------------------

可能是里面的计算，精度不够。

直接整除了
---------------------------------------------------------------

呵呵，我一运行，没晕死，出了不到10000行错误。
notice: use of undefined constant x - assumed 'x' in /home/yjj/public_html/temp/test/index.php on line 109

notice: use of undefined constant y - assumed 'y' in /home/yjj/public_html/temp/test/index.php on line 110

notice: use of undefined constant x - assumed 'x' in /home/yjj/public_html/temp/test/index.php on line 109

notice: use of undefined constant y - assumed 'y' in /home/yjj/public_html/temp/test/index.php on line 110

notice: use of undefined constant x - assumed 'x' in /home/yjj/public_html/temp/test/index.php on line 169

notice: use of undefined constant y - assumed 'y' in /home/yjj/public_html/temp/test/index.php on line 170
全是这个.

---------------------------------------------------------------

congratulation!
i want to try,but i can't understand the above-mentioned code.
---------------------------------------------------------------

太长了，头晕。
---------------------------------------------------------------

呵呵
---------------------------------------------------------------

不会。
---------------------------------------------------------------

碰到高人了，快帮我，
用gd画好的图用
header("content-type:image/png");
imag

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