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game/onyx2/include/jpgraph/jpgraph_gradient.php
Nigel dd61d3b66b
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Ajout d'une étape de linting dans DroneCi (#3) 
Corrige un doublons laissé par le rebase semi-manuel

Ajout d'une étape de linting dans DroneCi

Fix linting

Co-authored-by: Nigel Sheldon <nigelsheldon@live.fr>
Reviewed-on: https://gitea.nemunai.re/halo-battle/game/pulls/3
2020-11-21 18:54:32 +00:00

437 lines
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PHP
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<?php
/*=======================================================================
// File: JPGRAPH_GRADIENT.PHP
// Description: Create a color gradient
// Created: 2003-02-01
// Ver: $Id: jpgraph_gradient.php 947 2007-10-19 22:14:19Z ljp $
//
// Copyright (c) Aditus Consulting. All rights reserved.
//========================================================================
*/
// Styles for gradient color fill
DEFINE("GRAD_VER", 1);
DEFINE("GRAD_VERT", 1);
DEFINE("GRAD_HOR", 2);
DEFINE("GRAD_MIDHOR", 3);
DEFINE("GRAD_MIDVER", 4);
DEFINE("GRAD_CENTER", 5);
DEFINE("GRAD_WIDE_MIDVER", 6);
DEFINE("GRAD_WIDE_MIDHOR", 7);
DEFINE("GRAD_LEFT_REFLECTION", 8);
DEFINE("GRAD_RIGHT_REFLECTION", 9);
DEFINE("GRAD_RAISED_PANEL", 10);
DEFINE("GRAD_DIAGONAL", 11);
//===================================================
// CLASS Gradient
// Description: Handles gradient fills. This is to be
// considered a "friend" class of Class Image.
//===================================================
class Gradient
{
private $img=null;
private $numcolors=100;
//---------------
// CONSTRUCTOR
public function Gradient(&$img)
{
$this->img = $img;
}
public function SetNumColors($aNum)
{
$this->numcolors=$aNum;
}
//---------------
// PUBLIC METHODS
// Produce a gradient filled rectangle with a smooth transition between
// two colors.
// ($xl,$yt) Top left corner
// ($xr,$yb) Bottom right
// $from_color Starting color in gradient
// $to_color End color in the gradient
// $style Which way is the gradient oriented?
public function FilledRectangle($xl, $yt, $xr, $yb, $from_color, $to_color, $style=1)
{
switch ($style) {
case GRAD_VER:
$steps = ceil(abs($xr-$xl));
$delta = $xr>=$xl ? 1 : -1;
$this->GetColArray($from_color, $to_color, $steps, $colors, $this->numcolors);
for ($i=0, $x=$xl; $i < $steps; ++$i) {
$this->img->current_color = $colors[$i];
$this->img->Line($x, $yt, $x, $yb);
$x += $delta;
}
break;
case GRAD_HOR:
$steps = ceil(abs($yb-$yt));
$delta = $yb>=$yt ? 1 : -1;
$this->GetColArray($from_color, $to_color, $steps, $colors, $this->numcolors);
for ($i=0,$y=$yt; $i < $steps; ++$i) {
$this->img->current_color = $colors[$i];
$this->img->Line($xl, $y, $xr, $y);
$y += $delta;
}
break;
case GRAD_MIDHOR:
$steps = ceil(abs($yb-$yt)/2);
$delta = $yb >= $yt ? 1 : -1;
$this->GetColArray($from_color, $to_color, $steps, $colors, $this->numcolors);
for ($y=$yt, $i=0; $i < $steps; ++$i) {
$this->img->current_color = $colors[$i];
$this->img->Line($xl, $y, $xr, $y);
$y += $delta;
}
--$i;
if (abs($yb-$yt) % 2 == 1) {
--$steps;
}
for ($j=0; $j < $steps; ++$j, --$i) {
$this->img->current_color = $colors[$i];
$this->img->Line($xl, $y, $xr, $y);
$y += $delta;
}
$this->img->Line($xl, $y, $xr, $y);
break;
case GRAD_MIDVER:
$steps = ceil(abs($xr-$xl)/2);
$delta = $xr>=$xl ? 1 : -1;
$this->GetColArray($from_color, $to_color, $steps, $colors, $this->numcolors);
for ($x=$xl, $i=0; $i < $steps; ++$i) {
$this->img->current_color = $colors[$i];
$this->img->Line($x, $yb, $x, $yt);
$x += $delta;
}
--$i;
if (abs($xr-$xl) % 2 == 1) {
--$steps;
}
for ($j=0; $j < $steps; ++$j, --$i) {
$this->img->current_color = $colors[$i];
$this->img->Line($x, $yb, $x, $yt);
$x += $delta;
}
$this->img->Line($x, $yb, $x, $yt);
break;
case GRAD_WIDE_MIDVER:
$diff = ceil(abs($xr-$xl));
$steps = floor(abs($diff)/3);
$firststep = $diff - 2*$steps ;
$delta = $xr >= $xl ? 1 : -1;
$this->GetColArray($from_color, $to_color, $firststep, $colors, $this->numcolors);
for ($x=$xl, $i=0; $i < $firststep; ++$i) {
$this->img->current_color = $colors[$i];
$this->img->Line($x, $yb, $x, $yt);
$x += $delta;
}
--$i;
$this->img->current_color = $colors[$i];
for ($j=0; $j< $steps; ++$j) {
$this->img->Line($x, $yb, $x, $yt);
$x += $delta;
}
for ($j=0; $j < $steps; ++$j, --$i) {
$this->img->current_color = $colors[$i];
$this->img->Line($x, $yb, $x, $yt);
$x += $delta;
}
break;
case GRAD_WIDE_MIDHOR:
$diff = ceil(abs($yb-$yt));
$steps = floor(abs($diff)/3);
$firststep = $diff - 2*$steps ;
$delta = $yb >= $yt? 1 : -1;
$this->GetColArray($from_color, $to_color, $firststep, $colors, $this->numcolors);
for ($y=$yt, $i=0; $i < $firststep; ++$i) {
$this->img->current_color = $colors[$i];
$this->img->Line($xl, $y, $xr, $y);
$y += $delta;
}
--$i;
$this->img->current_color = $colors[$i];
for ($j=0; $j < $steps; ++$j) {
$this->img->Line($xl, $y, $xr, $y);
$y += $delta;
}
for ($j=0; $j < $steps; ++$j, --$i) {
$this->img->current_color = $colors[$i];
$this->img->Line($xl, $y, $xr, $y);
$y += $delta;
}
break;
case GRAD_LEFT_REFLECTION:
$steps1 = ceil(0.3*abs($xr-$xl));
$delta = $xr>=$xl ? 1 : -1;
$from_color = $this->img->rgb->Color($from_color);
$adj = 1.4;
$m = ($adj-1.0)*(255-min(255, min($from_color[0], min($from_color[1], $from_color[2]))));
$from_color2 = array(min(255, $from_color[0]+$m),
min(255, $from_color[1]+$m), min(255, $from_color[2]+$m));
$this->GetColArray($from_color2, $to_color, $steps1, $colors, $this->numcolors);
$n = count($colors);
for ($x=$xl, $i=0; $i < $steps1 && $i < $n; ++$i) {
$this->img->current_color = $colors[$i];
$this->img->Line($x, $yb, $x, $yt);
$x += $delta;
}
$steps2 = max(1, ceil(0.08*abs($xr-$xl)));
$this->img->SetColor($to_color);
for ($j=0; $j< $steps2; ++$j) {
$this->img->Line($x, $yb, $x, $yt);
$x += $delta;
}
$steps = abs($xr-$xl)-$steps1-$steps2;
$this->GetColArray($to_color, $from_color, $steps, $colors, $this->numcolors);
$n = count($colors);
for ($i=0; $i < $steps && $i < $n; ++$i) {
$this->img->current_color = $colors[$i];
$this->img->Line($x, $yb, $x, $yt);
$x += $delta;
}
break;
case GRAD_RIGHT_REFLECTION:
$steps1 = ceil(0.7*abs($xr-$xl));
$delta = $xr>=$xl ? 1 : -1;
$this->GetColArray($from_color, $to_color, $steps1, $colors, $this->numcolors);
$n = count($colors);
for ($x=$xl, $i=0; $i < $steps1 && $i < $n; ++$i) {
$this->img->current_color = $colors[$i];
$this->img->Line($x, $yb, $x, $yt);
$x += $delta;
}
$steps2 = max(1, ceil(0.08*abs($xr-$xl)));
$this->img->SetColor($to_color);
for ($j=0; $j< $steps2; ++$j) {
$this->img->Line($x, $yb, $x, $yt);
$x += $delta;
}
$from_color = $this->img->rgb->Color($from_color);
$adj = 1.4;
$m = ($adj-1.0)*(255-min(255, min($from_color[0], min($from_color[1], $from_color[2]))));
$from_color = array(min(255, $from_color[0]+$m),
min(255, $from_color[1]+$m), min(255, $from_color[2]+$m));
$steps = abs($xr-$xl)-$steps1-$steps2;
$this->GetColArray($to_color, $from_color, $steps, $colors, $this->numcolors);
$n = count($colors);
for ($i=0; $i < $steps && $i < $n; ++$i) {
$this->img->current_color = $colors[$i];
$this->img->Line($x, $yb, $x, $yt);
$x += $delta;
}
break;
case GRAD_CENTER:
$steps = ceil(min(($yb-$yt)+1, ($xr-$xl)+1)/2);
$this->GetColArray($from_color, $to_color, $steps, $colors, $this->numcolors);
$dx = ($xr-$xl)/2;
$dy = ($yb-$yt)/2;
$x=$xl;$y=$yt;$x2=$xr;$y2=$yb;
$n = count($colors);
for ($x=$xl, $i=0; $x < $xl+$dx && $y < $yt+$dy && $i < $n; ++$x, ++$y, --$x2, --$y2, ++$i) {
$this->img->current_color = $colors[$i];
$this->img->Rectangle($x, $y, $x2, $y2);
}
$this->img->Line($x, $y, $x2, $y2);
break;
case GRAD_RAISED_PANEL:
// right to left
$steps1 = $xr-$xl;
$delta = $xr>=$xl ? 1 : -1;
$this->GetColArray($to_color, $from_color, $steps1, $colors, $this->numcolors);
$n = count($colors);
for ($x=$xl, $i=0; $i < $steps1 && $i < $n; ++$i) {
$this->img->current_color = $colors[$i];
$this->img->Line($x, $yb, $x, $yt);
$x += $delta;
}
// left to right
$xr -= 3;
$xl += 3;
$yb -= 3;
$yt += 3;
$steps2 = $xr-$xl;
$delta = $xr>=$xl ? 1 : -1;
for ($x=$xl, $j=$steps2; $j >= 0; --$j) {
$this->img->current_color = $colors[$j];
$this->img->Line($x, $yb, $x, $yt);
$x += $delta;
}
break;
case GRAD_DIAGONAL:
// use the longer dimension to determine the required number of steps.
// first loop draws from one corner to the mid-diagonal and the second
// loop draws from the mid-diagonal to the opposing corner.
if ($xr-$xl > $yb - $yt) {
// width is greater than height -> use x-dimension for steps
$steps = $xr-$xl;
$delta = $xr>=$xl ? 1 : -1;
$this->GetColArray($from_color, $to_color, $steps*2, $colors, $this->numcolors);
$n = count($colors);
for ($x=$xl, $i=0; $i < $steps && $i < $n; ++$i) {
$this->img->current_color = $colors[$i];
$y = $yt+($i/$steps)*($yb-$yt)*$delta;
$this->img->Line($x, $yt, $xl, $y);
$x += $delta;
}
for ($x=$xl, $i = 0; $i < $steps && $i < $n; ++$i) {
$this->img->current_color = $colors[$steps+$i];
$y = $yt+($i/$steps)*($yb-$yt)*$delta;
$this->img->Line($x, $yb, $xr, $y);
$x += $delta;
}
} else {
// height is greater than width -> use y-dimension for steps
$steps = $yb-$yt;
$delta = $yb>=$yt ? 1 : -1;
$this->GetColArray($from_color, $to_color, $steps*2, $colors, $this->numcolors);
$n = count($colors);
for ($y=$yt, $i=0; $i < $steps && $i < $n; ++$i) {
$this->img->current_color = $colors[$i];
$x = $xl+($i/$steps)*($xr-$xl)*$delta;
$this->img->Line($x, $yt, $xl, $y);
$y += $delta;
}
for ($y=$yt, $i = 0; $i < $steps && $i < $n; ++$i) {
$this->img->current_color = $colors[$steps+$i];
$x = $xl+($i/$steps)*($xr-$xl)*$delta;
$this->img->Line($x, $yb, $xr, $y);
$x += $delta;
}
}
break;
default:
JpGraphError::RaiseL(7001, $style);
//("Unknown gradient style (=$style).");
break;
}
}
// Fill a special case of a polygon with a flat bottom
// with a gradient. Can be used for filled line plots.
// Please note that this is NOT a generic gradient polygon fill
// routine. It assumes that the bottom is flat (like a drawing
// of a mountain)
public function FilledFlatPolygon($pts, $from_color, $to_color)
{
if (count($pts) == 0) {
return;
}
$maxy=$pts[1];
$miny=$pts[1];
$n = count($pts) ;
for ($i=0, $idx=0; $i < $n; $i += 2) {
$x = round($pts[$i]);
$y = round($pts[$i+1]);
$miny = min($miny, $y);
$maxy = max($maxy, $y);
}
$colors = array();
$this->GetColArray($from_color, $to_color, abs($maxy-$miny)+1, $colors, $this->numcolors);
for ($i=$miny, $idx=0; $i <= $maxy; ++$i) {
$colmap[$i] = $colors[$idx++];
}
$n = count($pts)/2 ;
$idx = 0 ;
while ($idx < $n-1) {
$p1 = array(round($pts[$idx*2]),round($pts[$idx*2+1]));
$p2 = array(round($pts[++$idx*2]),round($pts[$idx*2+1]));
// Find the largest rectangle we can fill
$y = max($p1[1], $p2[1]) ;
for ($yy=$maxy; $yy > $y; --$yy) {
$this->img->current_color = $colmap[$yy];
$this->img->Line($p1[0], $yy, $p2[0]-1, $yy);
}
if ($p1[1] == $p2[1]) {
continue;
}
// Fill the rest using lines (slow...)
$slope = ($p2[0]-$p1[0])/($p1[1]-$p2[1]);
$x1 = $p1[0];
$x2 = $p2[0]-1;
$start = $y;
if ($p1[1] > $p2[1]) {
while ($y >= $p2[1]) {
$x1=$slope*($start-$y)+$p1[0];
$this->img->current_color = $colmap[$y];
$this->img->Line($x1, $y, $x2, $y);
--$y;
}
} else {
while ($y >= $p1[1]) {
$x2=$p2[0]+$slope*($start-$y);
$this->img->current_color = $colmap[$y];
$this->img->Line($x1, $y, $x2, $y);
--$y;
}
}
}
}
//---------------
// PRIVATE METHODS
// Add to the image color map the necessary colors to do the transition
// between the two colors using $numcolors intermediate colors
public function GetColArray($from_color, $to_color, $arr_size, &$colors, $numcols=100)
{
if ($arr_size==0) {
return;
}
// If color is given as text get it's corresponding r,g,b values
$from_color = $this->img->rgb->Color($from_color);
$to_color = $this->img->rgb->Color($to_color);
$rdelta=($to_color[0]-$from_color[0])/$numcols;
$gdelta=($to_color[1]-$from_color[1])/$numcols;
$bdelta=($to_color[2]-$from_color[2])/$numcols;
$colorsperstep = $numcols/$arr_size;
$prevcolnum = -1;
$from_alpha = $from_color[3];
$to_alpha = $to_color[3];
$adelta = ($to_alpha - $from_alpha) / $numcols ;
for ($i=0; $i < $arr_size; ++$i) {
$colnum = floor($colorsperstep*$i);
if ($colnum == $prevcolnum) {
$colors[$i] = $colidx;
} else {
$r = floor($from_color[0] + $colnum*$rdelta);
$g = floor($from_color[1] + $colnum*$gdelta);
$b = floor($from_color[2] + $colnum*$bdelta);
$alpha = $from_alpha + $colnum*$adelta;
$colidx = $this->img->rgb->Allocate(sprintf("#%02x%02x%02x", $r, $g, $b), $alpha);
$colors[$i] = $colidx;
}
$prevcolnum = $colnum;
}
}
} // Class
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