# FPGA implementation of digital signal processing to create super cool PHP Data pie chart Effect implementation code

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[Code]
//+------------------------+
//| Pie3dfun. php//Common Functions |
//+------------------------+
Define ("Angle_step", 5); Defines the angle step when drawing an elliptical arc
function Draw_getdarkcolor (\$img, \$CLR)//\$CLR the corresponding dark color
{
\$rgb = Imagecolorsforindex (\$img, \$CLR);
return Array (\$rgb ["Red"]/2, \$rgb ["Green"]/2, \$rgb ["Blue"]/2);
}
function draw_getexy (\$a, \$b, \$d)//\$d point coordinates on the ellipse corresponding to the angle
{
Return Array (round (\$a *cos (\$d)), round (\$b *sin (\$d)));
}
function Draw_arc (\$img, \$ox, \$oy, \$a, \$b, \$SD, \$ed, \$CLR)//Elliptical arc function
{
\$n = Ceil ((\$ed-\$SD)/angle_step);
\$d = \$SD;
List (\$x 0, \$y 0) = draw_getexy (\$a, \$b, \$d);
for (\$i =0; \$i < \$n; \$i + +)
{
\$d = (\$d +angle_step) > \$ed \$ed:(\$d +angle_step);
List (\$x, \$y) = Draw_getexy (\$a, \$b, \$d);
Imageline (\$img, \$x 0+ \$ox, \$y 0+ \$oy, \$x + \$ox, \$y + \$oy, \$CLR);
\$x 0 = \$x;
\$y 0 = \$y;
}
}
function Draw_sector (\$img, \$ox, \$oy, \$a, \$b, \$SD, \$ed, \$CLR)//Draw slices
{
\$n = Ceil ((\$ed-\$SD)/angle_step);
\$d = \$SD;
List (\$x 0, \$y 0) = draw_getexy (\$a, \$b, \$d);
Imageline (\$img, \$x 0+ \$ox, \$y 0+ \$oy, \$ox, \$oy, \$CLR);
for (\$i =0; \$i < \$n; \$i + +)
{
\$d = (\$d +angle_step) > \$ed \$ed:(\$d +angle_step);
List (\$x, \$y) = Draw_getexy (\$a, \$b, \$d);
Imageline (\$img, \$x 0+ \$ox, \$y 0+ \$oy, \$x + \$ox, \$y + \$oy, \$CLR);
\$x 0 = \$x;
\$y 0 = \$y;
}
Imageline (\$img, \$x 0+ \$ox, \$y 0+ \$oy, \$ox, \$oy, \$CLR);
List (\$x, \$y) = Draw_getexy (\$a/2, \$b/2, (\$d + \$sd)/2);
Imagefill (\$img, \$x + \$ox, \$y + \$oy, \$CLR);
}
function Draw_sector3d (\$img, \$ox, \$oy, \$a, \$b, \$v, \$SD, \$ed, \$clr)//3d fan
{
Draw_sector (\$img, \$ox, \$oy, \$a, \$b, \$SD, \$ed, \$CLR);
if (\$SD <180)
{
List (\$R, \$G, \$B) = Draw_getdarkcolor (\$img, \$CLR);
\$CLR =imagecolorallocate (\$img, \$R, \$G, \$B);
if (\$ed >180) \$ed = 180;
List (\$SX, \$sy) = Draw_getexy (\$a, \$b, \$SD);
\$SX + = \$ox;
\$sy + = \$oy;
List (\$ex, \$ey) = Draw_getexy (\$a, \$b, \$ed);
\$ex + = \$ox;
\$ey + = \$oy;
Imageline (\$img, \$SX, \$sy, \$SX, \$sy + \$v, \$CLR);
Imageline (\$img, \$ex, \$ey, \$ex, \$ey + \$v, \$CLR);
Draw_arc (\$img, \$ox, \$oy + \$v, \$a, \$b, \$SD, \$ed, \$CLR);
List (\$SX, \$sy) = Draw_getexy (\$a, \$b, (\$SD + \$ed)/2);
\$sy + = \$oy + \$v/2;
\$SX + = \$ox;
Imagefill (\$img, \$SX, \$sy, \$CLR);
}
}
function Draw_getindexcolor (\$img, \$CLR)//RBG goto Index Color
{
\$R = (\$clr >>16) & 0xFF;
\$G = (\$clr >>8) & 0xFF;
\$B = (\$CLR) & 0xFF;
Return Imagecolorallocate (\$img, \$R, \$G, \$B);
}
Draw the main function and output the picture
\$datLst as an array of data, \$datLst as an array of labels, \$datLst as an array of colors
The dimensions of the above three arrays should be equal
function draw_img (\$datLst, \$labLst, \$clrLst, \$a =250, \$b =120, \$v =20, \$f
{
\$ox = 5+ \$a;
\$oy = 5+ \$b;
\$FW = Imagefontwidth (\$font);
\$fh = Imagefontheight (\$font);
\$n = count (\$datLst);//number of data items
\$w = \$a
\$h = \$b *2+ \$v + (\$fh +2) * \$n;
\$img = Imagecreate (\$w, \$h);
Turn RGB to indexed color
for (\$i =0; \$i < \$n; \$i + +)
\$clrLst [\$i] = Draw_getindexcolor (\$img, \$clrLst [\$i]);
\$CLRBK = Imagecolorallocate (\$img, 0xFF, 0xFF, 0xff);
\$CLRT = Imagecolorallocate (\$img, 0x00, 0x00, 0x00);
Fill background color
Imagefill (\$img, 0, 0, \$CLRBK);
Sum
\$tot = 0;
for (\$i =0; \$i < \$n; \$i + +)
\$tot + = \$datLst [\$i];
\$SD = 0;
\$ed = 0; 333
\$ly = \$b *2+ \$v;
for (\$i =0; \$i < \$n; \$i + +)
{
\$SD = \$ed;
\$ed + = \$datLst [\$i]/\$tot *360;
Draw a round cake
Draw_sector3d (\$img, \$ox, \$oy, \$a, \$b, \$v, \$SD, \$ed, \$clrLst [\$i]); \$SD, \$ed, \$clrLst [\$i]);
Draw Labels
Imagefilledrectangle (\$img, 5, \$ly, 5+ \$fw, \$ly + \$fh, \$clrLst [\$i]);
Imagerectangle (\$img, 5, \$ly, 5+ \$fw, \$ly + \$fh, \$CLRT);
Imagestring (\$img, \$font, 5+2* \$fw, \$ly, \$labLst [\$i]. ":". \$datLst [\$i]. " (". (Round (10000* (\$datLst [\$i]/\$tot))/100). "%)", \$CLRT);
\$str = Iconv ("GB2312", "UTF-8", \$labLst [\$i]);
Imagettftext (\$img, \$font, 0, 5+2* \$FW, \$ly +13, \$CLRT, "./simsun.ttf", \$str. ":". \$datLst [\$i]. " (". (Round (10000* (\$datLst [\$i]/\$tot)/100) "%)");
\$ly + = \$fh +2;
}
Output graphics
Output the resulting picture
\$imgFileName = ". /temp/". Time ().". PNG ";
Imagepng (\$img, \$imgFileName);
"" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" ""
}
\$datLst = Array (30, 10, 20, 20, 10, 20, 10, 20); Data
\$labLst = Array ("China University of Science and Technology", "Anhui Polytechnic University", "Tsinghua University", "Peking University", "Nanjing University", "Shanghai University", "Hohai Univ.", "Zhongshan University"); Label
\$clrLst = Array (0x99ff00, 0xff6666, 0x0099ff, 0xff99ff, 0xffff99, 0x99ffff, 0xff3333, 0x009999);
Drawing
Draw_img (\$datLst, \$labLst, \$clrLst);
?>

The above describes the digital signal processing FPGA implementation to create a cool PHP Data pie chart effect implementation code, including the digital signal processing FPGA implementation of the content, I hope to be interested in PHP tutorial friends helpful.

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