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用Flash图形化数据(二)

【字号：大 中 小】日期：2023-10-01 19:24:53浏览：71作者：馨心
让我们烤点甜饼（做饼图） 成功地安装了PHP地Shockwave Flash支持后,就可以用PHP创建Shockwave文件了。学习的最好方法就是直接跳到程序去，所以下面就让我们看看程序。第一个文件包括怎样使用类的示例代码，同时也显示了如何将一个Flash文件嵌入到HTML文档中。 <?php // include class needed for flash graph include("class.pie.flash.php"); mysql_connect ("localhost", "root", ""); $query = "SELECT DISTINCT city_name, COUNT(city_id) ;;;;FROM city ;;;;GROUP BY city_name;"$result = mysql_db_query ("hermes",$query); while ($row = mysql_fetch_array ($result)) { ;;;;$city_counts[] = $row["COUNT(city_id)"]; ;;;;$city_names[] = $row["city_name"]; } mysql_free_result ($result); // Instantiate new object $graph = new flash_pie($city_counts, "city.swf"); // set graph title (should not exceed about 25 characters) $graph->pie_title("City Results", 30); // set graph legend $graph->pie_legend($city_names); // show graph $graph->show(); // free resources $graph->close(); ?>;;<html> <head> <meta http=equiv="Expires" content="Fri, Jun 12 1981 08:20:00 GMT"> <meta http=equiv="Pragma" content="no-cache"> <meta http=equiv="Cache-Control" content="no-cache"> <meta http=equiv="Content-Type" content="text/html; charset=iso-8859-1"> </head> <body bgcolor=white> <div align=center> <embed src="city.swf" quality=high loop=false pluginspage="http://www.macromedia.com/ shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash" type="application/x-shockwave-flash" width=600 height=300></embed> </div> </body> </html>;;<?php class flash_pie { // class variables // setup some global colors var $r_arr = array(0.1,;;1, 0, 1, 0, 1, 0.388235294, 0.4, 0.388235294, 0.929411765); var $g_arr = array(1,;;;;0, 0, 1, 1, 0, 0.8,;0.4, 0.8,;0.439215686); var $b_arr = array(0.25, 0, 1, 0, 1, 1, 1,;;;0.4, 1,;;;0.043137255);;;var $percents; function flash_pie($values, $this_file) { //begin constructor ;;;;// to write out code directly to browser, set content header and use "php://stdout" ;;;;//swf_openfile ("php://stdout", 700, 250, 30, 1, 1, 1); ;;;;//header("Content-type: application/x-shockwave-flash"); ;;;;swf_openfile ($this_file, 1000, 450, 30, 1, 1, 1); ;;;;;;;;;// set up viewport for flash movie ;;;;swf_ortho2 (-400, 300 , -90, 250);;;;;;;// choose the font we will use for pie graph ;;;;swf_definefont(10, "Mod"); ;;;;// get sum of array for percents/slices ;;;;while(list($key,$val) = each($values)) {;;$sum = $sum + $val;;;;;;;} ;;;;for ($i=0; $i<count($values); $i++) { // calculate how big they need to be and then // draw all of our slices if ($i == 0) {;;;;;;// setup parameters for first slice ;;;;$begin = 0; ;;;;$val = $values[$i]/$sum; ;;;;$end = $val*360; ;;;;swf_translate(-200, 0, 0); } else { ;;;;// setup parameters for every other slice ;;;;$begin = $end; ;;;;$val = $values[$i]/$sum; ;;;;$end = $end + $val*360; } // function call to add slice $objID = 1+$i*10; $this->show_slice($i, $objID, $begin, $end); // put together percent array for all labels $this->percents[$i] = round($values[$i]/$sum*100);;;;;;;;;} ;;;;;};;//end flash_pie function show_slice($i, $objID, $begin, $end) { ;;;;// draws a slice and places it in our frame ;;;;swf_addcolor($this->r_arr[$i], $this->g_arr[$i], $this->b_arr[$i], 1); ;;;;swf_startshape($objID); ;;;;swf_shapefillsolid(0, 0, 0, 1); ;;;;swf_shapearc(0, 0, 100, $begin, $end); ;;;;swf_shapecurveto(0, 0, 0, 0); ;;;;swf_endshape($objID); ;;;;swf_pushmatrix(); ;;;;swf_placeobject($objID, 1); ;;;;swf_popmatrix(); ;;;;swf_showframe(); } function pie_legend($labels) { ;;;;// draws the legend and labels and places it in our frame ;;;;for ($i=0; $i<count($labels); $i++) { swf_addcolor($this->r_arr[$i], $this->g_arr[$i], $this->b_arr[$i], 1); swf_definerect($i+1000, 1, 0, 20, 20, 0); if ($i == 0) { ;;;;swf_translate(120, 75, 0); } else { ;;;;swf_translate(0, 20, 0); } swf_placeobject($i+1000, 1); swf_translate(0, 5, 0); unset($label); $label = $labels[$i]; $label .= " ("$label .= $this->percents[$i]; $label .= " percent)"if ($i==0) { ;;;;$width = (swf_textwidth($label)/4)+30; } else { ;;;;$width = round(swf_textwidth($label)/2)+30; } $this->pie_text($i-1000, "$label", 15, $width, 0); swf_translate(-$width, 0, 0); ;;;;} ;;;;swf_translate($width, 30*count($labels), 0); }function pie_text($id, $text, $size, $x, $y) { ;;;;// simple function to draw text ($text) at ($x,$y) with font size ($size) ;;;;// set color of text to black ;;;;swf_addcolor(0,0,0,0); ;;;;// set font size and slant ;;;;swf_fontsize($size); ;;;;swf_fontslant(0); ;;;;// define, position and place text in frame ;;;;swf_definetext($id, "$text", 1); ;;;;swf_translate($x, $y, 0); ;;;;swf_placeobject($id, 1); } function pie_title($text, $size) { ;;;;// simple function to draw title and set lineup ;;;;// $text should not exceed about 25 characters ;;;;$this->pie_text(99, $text, $size, 0, 150); ;;;;swf_translate(0, -300, 0); }function show() { ;;;;// show the frame ;;;;swf_showframe(); } function close() { ;;;;// flush our buffer and return movie ;;;;$data = swf_closefile(1); }} // end class flash_pie ?>;;;;;;注意，你可以将生成的SWF文件直接返回到浏览器中，而不必一定要像我一样把它写到一个文件中。这可能对测试来说是有用的，但你可能很少用到一个Flash文件，更多的时候你可能想把Flash文件嵌入到HTML文档中。如果你选择直接把Flash文件输出到浏览器中，你可以如下设置header content 类型： ;;;header("Content-type: application/x-shockwave-flash") 并把swf_openfile(filename",...)改成swf_openfile("php://stdout",...) 更多信息的链接： ;;;;http://www.php.net/manual/ref.swf.php;;关于swf_* PHP函数的说明 ;;;;http://reality.sgi.com/grafica/flash/;;下载PHP的swf库 ;;;;http://openswf.org;;;;;更多Flash工具和信息 ;;;;http://www.macromedia.com/software/flash/open/licensing/;;;;;关于Macromedia Flash SDK的更多信息;
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