From dfc4e20b8e9ca57340e24143539498fb82527697 Mon Sep 17 00:00:00 2001
From: randommonk <randommonk@gmail.com>
Date: Thu, 4 Jan 2018 22:52:54 +0000
Subject: Bumped version to 4.3. Added jpgraph stats developed by killerEye

---
 html/jpgraph/imageSmoothArc.php | 344 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 344 insertions(+)
 create mode 100644 html/jpgraph/imageSmoothArc.php

(limited to 'html/jpgraph/imageSmoothArc.php')

diff --git a/html/jpgraph/imageSmoothArc.php b/html/jpgraph/imageSmoothArc.php
new file mode 100644
index 0000000..a1d581f
--- /dev/null
+++ b/html/jpgraph/imageSmoothArc.php
@@ -0,0 +1,344 @@
+<?php
+
+/*
+    
+    Copyright (c) 2006-2008 Ulrich Mierendorff
+
+    Permission is hereby granted, free of charge, to any person obtaining a
+    copy of this software and associated documentation files (the "Software"),
+    to deal in the Software without restriction, including without limitation
+    the rights to use, copy, modify, merge, publish, distribute, sublicense,
+    and/or sell copies of the Software, and to permit persons to whom the
+    Software is furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in
+    all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+    THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+    DEALINGS IN THE SOFTWARE.
+    
+    Changelog:
+    version 1.1
+        - improved the rendering speed by ~20%
+        
+        - Thanks to Matthias Mächler for fixing some small errors:
+            * uninitialized variables
+            * deprecated passing of $img reference in imageSmoothArc ()
+    
+    version 1.0
+        Release of rewritten script
+
+*/
+
+function imageSmoothArcDrawSegment (&$img, $cx, $cy, $a, $b, $aaAngleX, $aaAngleY, $color, $start, $stop, $seg)
+{
+    // Originally written from scratch by Ulrich Mierendorff, 06/2006
+    // Rewritten and improved, 04/2007, 07/2007
+    
+    // Please do not use THIS function directly. Scroll down to imageSmoothArc(...).
+    
+    $fillColor = imageColorExactAlpha( $img, $color[0], $color[1], $color[2], $color[3] );
+    
+    $xStart = abs($a * cos($start));
+    $yStart = abs($b * sin($start));
+    $xStop  = abs($a * cos($stop));
+    $yStop  = abs($b * sin($stop));
+    $dxStart = 0;
+    $dyStart = 0;
+    $dxStop = 0;
+    $dyStop = 0;
+    if ($xStart != 0)
+        $dyStart = $yStart/$xStart;
+    if ($xStop != 0)
+        $dyStop = $yStop/$xStop;
+    if ($yStart != 0)
+        $dxStart = $xStart/$yStart;
+    if ($yStop != 0)
+        $dxStop = $xStop/$yStop;
+    if (abs($xStart) >= abs($yStart)) {
+        $aaStartX = true;
+    } else {
+        $aaStartX = false;
+    }
+    if ($xStop >= $yStop) {
+        $aaStopX = true;
+    } else {
+        $aaStopX = false;
+    }
+    //$xp = +1; $yp = -1; $xa = +1; $ya = 0;
+    for ( $x = 0; $x < $a; $x += 1 ) {
+        /*$y = $b * sqrt( 1 - ($x*$x)/($a*$a) );
+        
+        $error = $y - (int)($y);
+        $y = (int)($y);
+        
+        $diffColor = imageColorExactAlpha( $img, $color[0], $color[1], $color[2], 127-(127-$color[3])*$error );*/
+        
+        $_y1 = $dyStop*$x;
+        $_y2 = $dyStart*$x;
+        if ($xStart > $xStop)
+        {
+            $error1 = $_y1 - (int)($_y1);
+            $error2 = 1 - $_y2 + (int)$_y2;
+            $_y1 = $_y1-$error1;
+            $_y2 = $_y2+$error2;
+        }
+        else
+        {
+            $error1 = 1 - $_y1 + (int)$_y1;
+            $error2 = $_y2 - (int)($_y2);
+            $_y1 = $_y1+$error1;
+            $_y2 = $_y2-$error2;
+        }
+        /*
+        if ($aaStopX)
+            $diffColor1 = imageColorExactAlpha( $img, $color[0], $color[1], $color[2], 127-(127-$color[3])*$error1 );
+        if ($aaStartX)
+            $diffColor2 = imageColorExactAlpha( $img, $color[0], $color[1], $color[2], 127-(127-$color[3])*$error2 );
+        */
+        
+        if ($seg == 0 || $seg == 2)
+        {
+            $i = $seg;
+            if (!($start > $i*M_PI/2 && $x > $xStart)) {
+                if ($i == 0) {
+                    $xp = +1; $yp = -1; $xa = +1; $ya = 0;
+                } else {
+                    $xp = -1; $yp = +1; $xa = 0; $ya = +1;
+                }
+                if ( $stop < ($i+1)*(M_PI/2) && $x <= $xStop ) {
+                    $diffColor1 = imageColorExactAlpha( $img, $color[0], $color[1], $color[2], 127-(127-$color[3])*$error1 );
+                    $y1 = $_y1; if ($aaStopX) imageSetPixel($img, $cx+$xp*($x)+$xa, $cy+$yp*($y1+1)+$ya, $diffColor1);
+                    
+                } else {
+                    $y = $b * sqrt( 1 - ($x*$x)/($a*$a) );
+                    $error = $y - (int)($y);
+                    $y = (int)($y);
+                    $diffColor = imageColorExactAlpha( $img, $color[0], $color[1], $color[2], 127-(127-$color[3])*$error );
+                    $y1 = $y; if ($x < $aaAngleX ) imageSetPixel($img, $cx+$xp*$x+$xa, $cy+$yp*($y1+1)+$ya, $diffColor);
+                }
+                if ($start > $i*M_PI/2 && $x <= $xStart) {
+                    $diffColor2 = imageColorExactAlpha( $img, $color[0], $color[1], $color[2], 127-(127-$color[3])*$error2 );
+                    $y2 = $_y2; if ($aaStartX) imageSetPixel($img, $cx+$xp*$x+$xa, $cy+$yp*($y2-1)+$ya, $diffColor2);
+                } else {
+                    $y2 = 0;
+                }
+                if ($y2 <= $y1) imageLine($img, $cx+$xp*$x+$xa, $cy+$yp*$y1+$ya , $cx+$xp*$x+$xa, $cy+$yp*$y2+$ya, $fillColor);
+            }
+        }
+        
+        if ($seg == 1 || $seg == 3)
+        {
+            $i = $seg;
+            if (!($stop < ($i+1)*M_PI/2 && $x > $xStop)) {
+                if ($i == 1) {
+                    $xp = -1; $yp = -1; $xa = 0; $ya = 0;
+                } else {
+                    $xp = +1; $yp = +1; $xa = 1; $ya = 1;
+                }
+                if ( $start > $i*M_PI/2 && $x < $xStart ) {
+                    $diffColor2 = imageColorExactAlpha( $img, $color[0], $color[1], $color[2], 127-(127-$color[3])*$error2 );
+                    $y1 = $_y2; if ($aaStartX) imageSetPixel($img, $cx+$xp*$x+$xa, $cy+$yp*($y1+1)+$ya, $diffColor2);
+                    
+                } else {
+                    $y = $b * sqrt( 1 - ($x*$x)/($a*$a) );
+                    $error = $y - (int)($y);
+                    $y = (int) $y;
+                    $diffColor = imageColorExactAlpha( $img, $color[0], $color[1], $color[2], 127-(127-$color[3])*$error );
+                    $y1 = $y; if ($x < $aaAngleX ) imageSetPixel($img, $cx+$xp*$x+$xa, $cy+$yp*($y1+1)+$ya, $diffColor);
+                }
+                if ($stop < ($i+1)*M_PI/2 && $x <= $xStop) {
+                    $diffColor1 = imageColorExactAlpha( $img, $color[0], $color[1], $color[2], 127-(127-$color[3])*$error1 );
+                    $y2 = $_y1; if ($aaStopX)  imageSetPixel($img, $cx+$xp*$x+$xa, $cy+$yp*($y2-1)+$ya, $diffColor1);
+                } else {
+                    $y2 = 0;
+                }
+                if ($y2 <= $y1) imageLine($img, $cx+$xp*$x+$xa, $cy+$yp*$y1+$ya, $cx+$xp*$x+$xa, $cy+$yp*$y2+$ya, $fillColor);
+            }
+        }
+    }
+    
+    ///YYYYY
+    
+    for ( $y = 0; $y < $b; $y += 1 ) {
+        /*$x = $a * sqrt( 1 - ($y*$y)/($b*$b) );
+        
+        $error = $x - (int)($x);
+        $x = (int)($x);
+        
+        $diffColor = imageColorExactAlpha( $img, $color[0], $color[1], $color[2], 127-(127-$color[3])*$error );
+        */
+        $_x1 = $dxStop*$y;
+        $_x2 = $dxStart*$y;
+        if ($yStart > $yStop)
+        {
+            $error1 = $_x1 - (int)($_x1);
+            $error2 = 1 - $_x2 + (int)$_x2;
+            $_x1 = $_x1-$error1;
+            $_x2 = $_x2+$error2;
+        }
+        else
+        {
+            $error1 = 1 - $_x1 + (int)$_x1;
+            $error2 = $_x2 - (int)($_x2);
+            $_x1 = $_x1+$error1;
+            $_x2 = $_x2-$error2;
+        }
+/*
+        if (!$aaStopX)
+            $diffColor1 = imageColorExactAlpha( $img, $color[0], $color[1], $color[2], 127-(127-$color[3])*$error1 );
+        if (!$aaStartX)
+            $diffColor2 = imageColorExactAlpha( $img, $color[0], $color[1], $color[2], 127-(127-$color[3])*$error2 );
+*/
+        
+        if ($seg == 0 || $seg == 2)
+        {
+            $i = $seg;
+            if (!($start > $i*M_PI/2 && $y > $yStop)) {
+                if ($i == 0) {
+                    $xp = +1; $yp = -1; $xa = 1; $ya = 0;
+                } else {
+                    $xp = -1; $yp = +1; $xa = 0; $ya = 1;
+                }
+                if ( $stop < ($i+1)*(M_PI/2) && $y <= $yStop ) {
+                    $diffColor1 = imageColorExactAlpha( $img, $color[0], $color[1], $color[2], 127-(127-$color[3])*$error1 );
+                    $x1 = $_x1; if (!$aaStopX) imageSetPixel($img, $cx+$xp*($x1-1)+$xa, $cy+$yp*($y)+$ya, $diffColor1);
+                } 
+                if ($start > $i*M_PI/2 && $y < $yStart) {
+                    $diffColor2 = imageColorExactAlpha( $img, $color[0], $color[1], $color[2], 127-(127-$color[3])*$error2 );
+                    $x2 = $_x2; if (!$aaStartX) imageSetPixel($img, $cx+$xp*($x2+1)+$xa, $cy+$yp*($y)+$ya, $diffColor2);
+                } else {
+                    $x = $a * sqrt( 1 - ($y*$y)/($b*$b) );
+                    $error = $x - (int)($x);
+                    $x = (int)($x);
+                    $diffColor = imageColorExactAlpha( $img, $color[0], $color[1], $color[2], 127-(127-$color[3])*$error );
+                    $x1 = $x; if ($y < $aaAngleY && $y <= $yStop ) imageSetPixel($img, $cx+$xp*($x1+1)+$xa, $cy+$yp*$y+$ya, $diffColor);
+                }
+            }
+        }
+        
+        if ($seg == 1 || $seg == 3)
+        {
+            $i = $seg;
+            if (!($stop < ($i+1)*M_PI/2 && $y > $yStart)) {
+                if ($i == 1) {
+                    $xp = -1; $yp = -1; $xa = 0; $ya = 0;
+                } else {
+                    $xp = +1; $yp = +1; $xa = 1; $ya = 1;
+                }
+                if ( $start > $i*M_PI/2 && $y < $yStart ) {
+                    $diffColor2 = imageColorExactAlpha( $img, $color[0], $color[1], $color[2], 127-(127-$color[3])*$error2 );
+                    $x1 = $_x2; if (!$aaStartX) imageSetPixel($img, $cx+$xp*($x1-1)+$xa, $cy+$yp*$y+$ya,  $diffColor2);
+                } 
+                if ($stop < ($i+1)*M_PI/2 && $y <= $yStop) {
+                    $diffColor1 = imageColorExactAlpha( $img, $color[0], $color[1], $color[2], 127-(127-$color[3])*$error1 );
+                    $x2 = $_x1; if (!$aaStopX)  imageSetPixel($img, $cx+$xp*($x2+1)+$xa, $cy+$yp*$y+$ya, $diffColor1);
+                } else {
+                    $x = $a * sqrt( 1 - ($y*$y)/($b*$b) );
+                    $error = $x - (int)($x);
+                    $x = (int)($x);
+                    $diffColor = imageColorExactAlpha( $img, $color[0], $color[1], $color[2], 127-(127-$color[3])*$error );
+                    $x1 = $x; if ($y < $aaAngleY  && $y < $yStart) imageSetPixel($img,$cx+$xp*($x1+1)+$xa,  $cy+$yp*$y+$ya, $diffColor);
+                }
+            }
+        }
+    }
+}
+
+
+function imageSmoothArc ( &$img, $cx, $cy, $w, $h, $color, $start, $stop)
+{
+    // Originally written from scratch by Ulrich Mierendorff, 06/2006
+    // Rewritten and improved, 04/2007, 07/2007
+    // compared to old version:
+    // + Support for transparency added
+    // + Improved quality of edges & antialiasing
+    
+    // note: This function does not represent the fastest way to draw elliptical
+    // arcs. It was written without reading any papers on that subject. Better
+    // algorithms may be twice as fast or even more.
+    
+    // what it cannot do: It does not support outlined arcs, only filled
+    
+    // Parameters:
+    // $cx      - Center of ellipse, X-coord
+    // $cy      - Center of ellipse, Y-coord
+    // $w       - Width of ellipse ($w >= 2)
+    // $h       - Height of ellipse ($h >= 2 )
+    // $color   - Color of ellipse as a four component array with RGBA
+    // $start   - Starting angle of the arc, no limited range!
+    // $stop    - Stop     angle of the arc, no limited range!
+    // $start _can_ be greater than $stop!
+    // If any value is not in the given range, results are undefined!
+    
+    // This script does not use any special algorithms, everything is completely
+    // written from scratch; see http://de.wikipedia.org/wiki/Ellipse for formulas.
+    
+    while ($start < 0)
+        $start += 2*M_PI;
+    while ($stop < 0)
+        $stop += 2*M_PI;
+    
+    while ($start > 2*M_PI)
+        $start -= 2*M_PI;
+    
+    while ($stop > 2*M_PI)
+        $stop -= 2*M_PI;
+    
+    
+    if ($start > $stop)
+    {
+        imageSmoothArc ( $img, $cx, $cy, $w, $h, $color, $start, 2*M_PI);
+        imageSmoothArc ( $img, $cx, $cy, $w, $h, $color, 0, $stop);
+        return;
+    }
+    
+    $a = 1.0*round ($w/2);
+    $b = 1.0*round ($h/2);
+    $cx = 1.0*round ($cx);
+    $cy = 1.0*round ($cy);
+    
+    $aaAngle = atan(($b*$b)/($a*$a)*tan(0.25*M_PI));
+    $aaAngleX = $a*cos($aaAngle);
+    $aaAngleY = $b*sin($aaAngle);
+    
+    $a -= 0.5; // looks better...
+    $b -= 0.5;
+    
+    for ($i=0; $i<4;$i++)
+    {
+        if ($start < ($i+1)*M_PI/2)
+        {
+            if ($start > $i*M_PI/2)
+            {
+                if ($stop > ($i+1)*M_PI/2)
+                {
+                    imageSmoothArcDrawSegment($img, $cx, $cy, $a, $b, $aaAngleX, $aaAngleY , $color, $start, ($i+1)*M_PI/2, $i);
+                }
+                else
+                {
+                    imageSmoothArcDrawSegment($img, $cx, $cy, $a, $b, $aaAngleX, $aaAngleY, $color, $start, $stop, $i);
+                    break;
+                }
+            }
+            else
+            {
+                if ($stop > ($i+1)*M_PI/2)
+                {
+                    imageSmoothArcDrawSegment($img, $cx, $cy, $a, $b, $aaAngleX, $aaAngleY, $color, $i*M_PI/2, ($i+1)*M_PI/2, $i);
+                }
+                else
+                {
+                    imageSmoothArcDrawSegment($img, $cx, $cy, $a, $b, $aaAngleX, $aaAngleY, $color, $i*M_PI/2, $stop, $i);
+                    break;
+                }
+            }
+        }
+    }
+}
+?>
-- 
cgit