Gradient::FilledRectangle() - Code Metrics - XoopsModules25x/xhelp - Measure and Improve Code Quality continuously with Scrutinizer

Gradient::FilledRectangle() F
last analyzed 2022-05-31 04:27 UTC

↳ Parent: Gradient

Complexity

Conditions	63
Paths	139

Size

Total Lines	278
Code Lines	218

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	63
eloc	218
c	1
b	0
f	0
nc	139
nop	7
dl	0
loc	278
rs	3.0733

How to fix Long Method Complexity

<?php

/**
 * JPGraph v4.0.3
 */

namespace Amenadiel\JpGraph\Plot;

/*
 * File:        JPGRAPH_GRADIENT.PHP
 * // Description: Create a color gradient
 * // Created:     2003-02-01
 * // Ver:         $Id: jpgraph_gradient.php 1761 2009-08-01 08:31:28Z ljp $
 * //
 * // Copyright (c) Asial Corporation. All rights reserved.
 */
use Amenadiel\JpGraph\Util;

/**
 * @class Gradient
 * // Description: Handles gradient fills. This is to be
 * // considered a "friend" class of Class Image.
 */
class Gradient
{
    private $img;
    private $numcolors = 100;

    /**
     * CONSTRUCTOR.
     *
     * @param mixed $img
     */
    public function __construct(&$img)
    {
        $this->img = $img;
    }

    public function SetNumColors($aNum)
    {
        $this->numcolors = $aNum;
    }

    /**
     * PUBLIC METHODS.
     *
     * @param mixed $xl
     * @param mixed $yt
     * @param mixed $xr
     * @param mixed $yb
     * @param mixed $from_color
     * @param mixed $to_color
     * @param mixed $style
     */
    // Produce a gradient filled rectangle with a smooth transition between
    // two colors.
    // ($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)
    {
        $this->img->SetLineWeight(1);
        switch ($style) {
            case GRAD_VER:
                $steps = ceil(abs($xr - $xl) + 1);
                $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) + 1);
                $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 = [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);
                $n = safe_count($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);
                $n = safe_count($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);
                $n = safe_count($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 = [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);
                $n = safe_count($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;
                $n  = safe_count($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);
                $n = safe_count($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);
                    $n = safe_count($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);
                    $n = safe_count($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:
                Util\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, $to_color)
    {
        if (safe_count($pts) == 0) {
            return;
        }

        $maxy = $pts[1];
        $miny = $pts[1];
        $n    = safe_count($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 = [];
        $this->GetColArray($from_color, $to_color, abs($maxy - $miny) + 1, $colors, $this->numcolors);
        for ($i = $miny, $idx = 0; $i <= $maxy; ++$i) {
            $colmap[$i] = $colors[$idx++];
        }

        $n   = safe_count($pts) / 2;
        $idx = 0;
        while ($idx < $n - 1) {
            $p1 = [round($pts[$idx * 2]), round($pts[$idx * 2 + 1])];
            $p2 = [round($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.
     *
     * @param mixed $from_color
     * @param mixed $to_color
     * @param mixed $arr_size
     * @param mixed $numcols
     * @param mixed $colors
     */
    // 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


1			<?php
2
3			/**
4			* JPGraph v4.0.3
5			*/
6
7			namespace Amenadiel\JpGraph\Plot;
8
9			/*
10			* File: JPGRAPH_GRADIENT.PHP
11			* // Description: Create a color gradient
12			* // Created: 2003-02-01
13			* // Ver: $Id: jpgraph_gradient.php 1761 2009-08-01 08:31:28Z ljp $
14			* //
15			* // Copyright (c) Asial Corporation. All rights reserved.
16			*/
17			use Amenadiel\JpGraph\Util;
18
19			/**
20			* @class Gradient
21			* // Description: Handles gradient fills. This is to be
22			* // considered a "friend" class of Class Image.
23			*/
24			class Gradient
25			{
26			private $img;
27			private $numcolors = 100;
28
29			/**
30			* CONSTRUCTOR.
31			*
32			* @param mixed $img
33			*/
34			public function __construct(&$img)
35			{
36			$this->img = $img;
37			}
38
39			public function SetNumColors($aNum)
40			{
41			$this->numcolors = $aNum;
42			}
43
44			/**
45			* PUBLIC METHODS.
46			*
47			* @param mixed $xl
48			* @param mixed $yt
49			* @param mixed $xr
50			* @param mixed $yb
51			* @param mixed $from_color
52			* @param mixed $to_color
53			* @param mixed $style
54			*/
55			// Produce a gradient filled rectangle with a smooth transition between
56			// two colors.
57			// ($xl,$yt) Top left corner
58			// ($xr,$yb) Bottom right
59			// $from_color Starting color in gradient
60			// $to_color End color in the gradient
61			// $style Which way is the gradient oriented?
62			public function FilledRectangle($xl, $yt, $xr, $yb, $from_color, $to_color, $style = 1)
63			{
64			$this->img->SetLineWeight(1);
65			switch ($style) {
66			case GRAD_VER:
67			$steps = ceil(abs($xr - $xl) + 1);
68			$delta = $xr >= $xl ? 1 : -1;
69			$this->GetColArray($from_color, $to_color, $steps, $colors, $this->numcolors);
70			for ($i = 0, $x = $xl; $i < $steps; ++$i) {
71			$this->img->current_color = $colors[$i];
72			$this->img->Line($x, $yt, $x, $yb);
73			$x += $delta;
74			}
75
76			break;
77			case GRAD_HOR:
78			$steps = ceil(abs($yb - $yt) + 1);
79			$delta = $yb >= $yt ? 1 : -1;
80			$this->GetColArray($from_color, $to_color, $steps, $colors, $this->numcolors);
81			for ($i = 0, $y = $yt; $i < $steps; ++$i) {
82			$this->img->current_color = $colors[$i];
83			$this->img->Line($xl, $y, $xr, $y);
84			$y += $delta;
85			}
86
87			break;
88			case GRAD_MIDHOR:
89			$steps = ceil(abs($yb - $yt) / 2);
90			$delta = $yb >= $yt ? 1 : -1;
91			$this->GetColArray($from_color, $to_color, $steps, $colors, $this->numcolors);
92			for ($y = $yt, $i = 0; $i < $steps; ++$i) {
93			$this->img->current_color = $colors[$i];
94			$this->img->Line($xl, $y, $xr, $y);
95			$y += $delta;
96			}
97			--$i;
98			if (abs($yb - $yt) % 2 == 1) {
99			--$steps;
100			}
101			for ($j = 0; $j < $steps; ++$j, --$i) {
102			$this->img->current_color = $colors[$i];
103			$this->img->Line($xl, $y, $xr, $y);
104			$y += $delta;
105			}
106			$this->img->Line($xl, $y, $xr, $y);
107
108			break;
109			case GRAD_MIDVER:
110			$steps = ceil(abs($xr - $xl) / 2);
111			$delta = $xr >= $xl ? 1 : -1;
112			$this->GetColArray($from_color, $to_color, $steps, $colors, $this->numcolors);
113			for ($x = $xl, $i = 0; $i < $steps; ++$i) {
114			$this->img->current_color = $colors[$i];
115			$this->img->Line($x, $yb, $x, $yt);
116			$x += $delta;
117			}
118			--$i;
119			if (abs($xr - $xl) % 2 == 1) {
120			--$steps;
121			}
122			for ($j = 0; $j < $steps; ++$j, --$i) {
123			$this->img->current_color = $colors[$i];
124			$this->img->Line($x, $yb, $x, $yt);
125			$x += $delta;
126			}
127			$this->img->Line($x, $yb, $x, $yt);
128
129			break;
130			case GRAD_WIDE_MIDVER:
131			$diff = ceil(abs($xr - $xl));
132			$steps = floor(abs($diff) / 3);
133			$firststep = $diff - 2 * $steps;
134			$delta = $xr >= $xl ? 1 : -1;
135			$this->GetColArray($from_color, $to_color, $firststep, $colors, $this->numcolors);
136			for ($x = $xl, $i = 0; $i < $firststep; ++$i) {
137			$this->img->current_color = $colors[$i];
138			$this->img->Line($x, $yb, $x, $yt);
139			$x += $delta;
140			}
141			--$i;
142			$this->img->current_color = $colors[$i];
143			for ($j = 0; $j < $steps; ++$j) {
144			$this->img->Line($x, $yb, $x, $yt);
145			$x += $delta;
146			}
147
148			for ($j = 0; $j < $steps; ++$j, --$i) {
149			$this->img->current_color = $colors[$i];
150			$this->img->Line($x, $yb, $x, $yt);
151			$x += $delta;
152			}
153
154			break;
155			case GRAD_WIDE_MIDHOR:
156			$diff = ceil(abs($yb - $yt));
157			$steps = floor(abs($diff) / 3);
158			$firststep = $diff - 2 * $steps;
159			$delta = $yb >= $yt ? 1 : -1;
160			$this->GetColArray($from_color, $to_color, $firststep, $colors, $this->numcolors);
161			for ($y = $yt, $i = 0; $i < $firststep; ++$i) {
162			$this->img->current_color = $colors[$i];
163			$this->img->Line($xl, $y, $xr, $y);
164			$y += $delta;
165			}
166			--$i;
167			$this->img->current_color = $colors[$i];
168			for ($j = 0; $j < $steps; ++$j) {
169			$this->img->Line($xl, $y, $xr, $y);
170			$y += $delta;
171			}
172			for ($j = 0; $j < $steps; ++$j, --$i) {
173			$this->img->current_color = $colors[$i];
174			$this->img->Line($xl, $y, $xr, $y);
175			$y += $delta;
176			}
177
178			break;
179			case GRAD_LEFT_REFLECTION:
180			$steps1 = ceil(0.3 * abs($xr - $xl));
181			$delta = $xr >= $xl ? 1 : -1;
182
183			$from_color = $this->img->rgb->Color($from_color);
184			$adj = 1.4;
185			$m = ($adj - 1.0) * (255 - min(255, min($from_color[0], min($from_color[1], $from_color[2]))));
186			$from_color2 = [min(255, $from_color[0] + $m),
187			min(255, $from_color[1] + $m), min(255, $from_color[2] + $m), ];
188
189			$this->GetColArray($from_color2, $to_color, $steps1, $colors, $this->numcolors);
190			$n = safe_count($colors);
191			for ($x = $xl, $i = 0; $i < $steps1 && $i < $n; ++$i) {
192			$this->img->current_color = $colors[$i];
193			$this->img->Line($x, $yb, $x, $yt);
194			$x += $delta;
195			}
196			$steps2 = max(1, ceil(0.08 * abs($xr - $xl)));
197			$this->img->SetColor($to_color);
198			for ($j = 0; $j < $steps2; ++$j) {
199			$this->img->Line($x, $yb, $x, $yt);
200			$x += $delta;
201			}
202			$steps = abs($xr - $xl) - $steps1 - $steps2;
203			$this->GetColArray($to_color, $from_color, $steps, $colors, $this->numcolors);
204			$n = safe_count($colors);
205			for ($i = 0; $i < $steps && $i < $n; ++$i) {
206			$this->img->current_color = $colors[$i];
207			$this->img->Line($x, $yb, $x, $yt);
208			$x += $delta;
209			}
210
211			break;
212			case GRAD_RIGHT_REFLECTION:
213			$steps1 = ceil(0.7 * abs($xr - $xl));
214			$delta = $xr >= $xl ? 1 : -1;
215
216			$this->GetColArray($from_color, $to_color, $steps1, $colors, $this->numcolors);
217			$n = safe_count($colors);
218			for ($x = $xl, $i = 0; $i < $steps1 && $i < $n; ++$i) {
219			$this->img->current_color = $colors[$i];
220			$this->img->Line($x, $yb, $x, $yt);
221			$x += $delta;
222			}
223			$steps2 = max(1, ceil(0.08 * abs($xr - $xl)));
224			$this->img->SetColor($to_color);
225			for ($j = 0; $j < $steps2; ++$j) {
226			$this->img->Line($x, $yb, $x, $yt);
227			$x += $delta;
228			}
229
230			$from_color = $this->img->rgb->Color($from_color);
231			$adj = 1.4;
232			$m = ($adj - 1.0) * (255 - min(255, min($from_color[0], min($from_color[1], $from_color[2]))));
233			$from_color = [min(255, $from_color[0] + $m),
234			min(255, $from_color[1] + $m), min(255, $from_color[2] + $m), ];
235
236			$steps = abs($xr - $xl) - $steps1 - $steps2;
237			$this->GetColArray($to_color, $from_color, $steps, $colors, $this->numcolors);
238			$n = safe_count($colors);
239			for ($i = 0; $i < $steps && $i < $n; ++$i) {
240			$this->img->current_color = $colors[$i];
241			$this->img->Line($x, $yb, $x, $yt);
242			$x += $delta;
243			}
244
245			break;
246			case GRAD_CENTER:
247			$steps = ceil(min(($yb - $yt) + 1, ($xr - $xl) + 1) / 2);
248			$this->GetColArray($from_color, $to_color, $steps, $colors, $this->numcolors);
249			$dx = ($xr - $xl) / 2;
250			$dy = ($yb - $yt) / 2;
251			$x = $xl;
			0 ignored issues – show Unused Code introduced 2022-01-13 23:33 UTC by Report Bug Copy Issue Report The assignment to `$x` is dead and can be removed. Loading history...
252			$y = $yt;
253			$x2 = $xr;
254			$y2 = $yb;
255			$n = safe_count($colors);
256			for ($x = $xl, $i = 0; $x < $xl + $dx && $y < $yt + $dy && $i < $n; ++$x, ++$y, --$x2, --$y2, ++$i) {
257			$this->img->current_color = $colors[$i];
258			$this->img->Rectangle($x, $y, $x2, $y2);
259			}
260			$this->img->Line($x, $y, $x2, $y2);
261
262			break;
263			case GRAD_RAISED_PANEL:
264			// right to left
265			$steps1 = $xr - $xl;
266			$delta = $xr >= $xl ? 1 : -1;
267			$this->GetColArray($to_color, $from_color, $steps1, $colors, $this->numcolors);
268			$n = safe_count($colors);
269			for ($x = $xl, $i = 0; $i < $steps1 && $i < $n; ++$i) {
270			$this->img->current_color = $colors[$i];
271			$this->img->Line($x, $yb, $x, $yt);
272			$x += $delta;
273			}
274
275			// left to right
276			$xr -= 3;
277			$xl += 3;
278			$yb -= 3;
279			$yt += 3;
280			$steps2 = $xr - $xl;
281			$delta = $xr >= $xl ? 1 : -1;
282			for ($x = $xl, $j = $steps2; $j >= 0; --$j) {
283			$this->img->current_color = $colors[$j];
284			$this->img->Line($x, $yb, $x, $yt);
285			$x += $delta;
286			}
287
288			break;
289			case GRAD_DIAGONAL:
290			// use the longer dimension to determine the required number of steps.
291			// first loop draws from one corner to the mid-diagonal and the second
292			// loop draws from the mid-diagonal to the opposing corner.
293			if ($xr - $xl > $yb - $yt) {
294			// width is greater than height -> use x-dimension for steps
295			$steps = $xr - $xl;
296			$delta = $xr >= $xl ? 1 : -1;
297			$this->GetColArray($from_color, $to_color, $steps * 2, $colors, $this->numcolors);
298			$n = safe_count($colors);
299
300			for ($x = $xl, $i = 0; $i < $steps && $i < $n; ++$i) {
301			$this->img->current_color = $colors[$i];
302			$y = $yt + ($i / $steps) * ($yb - $yt) * $delta;
303			$this->img->Line($x, $yt, $xl, $y);
304			$x += $delta;
305			}
306
307			for ($x = $xl, $i = 0; $i < $steps && $i < $n; ++$i) {
308			$this->img->current_color = $colors[$steps + $i];
309			$y = $yt + ($i / $steps) * ($yb - $yt) * $delta;
310			$this->img->Line($x, $yb, $xr, $y);
311			$x += $delta;
312			}
313			} else {
314			// height is greater than width -> use y-dimension for steps
315			$steps = $yb - $yt;
316			$delta = $yb >= $yt ? 1 : -1;
317			$this->GetColArray($from_color, $to_color, $steps * 2, $colors, $this->numcolors);
318			$n = safe_count($colors);
319
320			for ($y = $yt, $i = 0; $i < $steps && $i < $n; ++$i) {
321			$this->img->current_color = $colors[$i];
322			$x = $xl + ($i / $steps) * ($xr - $xl) * $delta;
323			$this->img->Line($x, $yt, $xl, $y);
324			$y += $delta;
325			}
326
327			for ($y = $yt, $i = 0; $i < $steps && $i < $n; ++$i) {
328			$this->img->current_color = $colors[$steps + $i];
329			$x = $xl + ($i / $steps) * ($xr - $xl) * $delta;
330			$this->img->Line($x, $yb, $xr, $y);
331			$x += $delta;
332			}
333			}
334
335			break;
336			default:
337			Util\JpGraphError::RaiseL(7001, $style);
338			//("Unknown gradient style (=$style).");
339			break;
340			}
341			}
342
343			// Fill a special case of a polygon with a flat bottom
344			// with a gradient. Can be used for filled line plots.
345			// Please note that this is NOT a generic gradient polygon fill
346			// routine. It assumes that the bottom is flat (like a drawing
347			// of a mountain)
348			public function FilledFlatPolygon($pts, $from_color, $to_color)
349			{
350			if (safe_count($pts) == 0) {
351			return;
352			}
353
354			$maxy = $pts[1];
355			$miny = $pts[1];
356			$n = safe_count($pts);
357			for ($i = 0, $idx = 0; $i < $n; $i += 2) {
			0 ignored issues – show Unused Code introduced 2022-01-13 23:33 UTC by Report Bug Copy Issue Report The assignment to `$idx` is dead and can be removed. Loading history...
358			$x = round($pts[$i]);
			0 ignored issues – show Unused Code introduced 2022-01-13 23:33 UTC by Report Bug Copy Issue Report The assignment to `$x` is dead and can be removed. Loading history...
359			$y = round($pts[$i + 1]);
360			$miny = min($miny, $y);
361			$maxy = max($maxy, $y);
362			}
363
364			$colors = [];
365			$this->GetColArray($from_color, $to_color, abs($maxy - $miny) + 1, $colors, $this->numcolors);
366			for ($i = $miny, $idx = 0; $i <= $maxy; ++$i) {
367			$colmap[$i] = $colors[$idx++];
368			}
369
370			$n = safe_count($pts) / 2;
371			$idx = 0;
372			while ($idx < $n - 1) {
373			$p1 = [round($pts[$idx * 2]), round($pts[$idx * 2 + 1])];
374			$p2 = [round($pts[++$idx * 2]), round($pts[$idx * 2 + 1])];
375
376			// Find the largest rectangle we can fill
377			$y = max($p1[1], $p2[1]);
378			for ($yy = $maxy; $yy > $y; --$yy) {
379			$this->img->current_color = $colmap[$yy];
			0 ignored issues – show Comprehensibility Best Practice introduced 2022-01-13 23:33 UTC by Report Bug Copy Issue Report The variable `$colmap` does not seem to be defined for all execution paths leading up to this point. Loading history...
380			$this->img->Line($p1[0], $yy, $p2[0] - 1, $yy);
381			}
382
383			if ($p1[1] == $p2[1]) {
384			continue;
385			}
386
387			// Fill the rest using lines (slow...)
388			$slope = ($p2[0] - $p1[0]) / ($p1[1] - $p2[1]);
389			$x1 = $p1[0];
390			$x2 = $p2[0] - 1;
391			$start = $y;
392			if ($p1[1] > $p2[1]) {
393			while ($y >= $p2[1]) {
394			$x1 = $slope * ($start - $y) + $p1[0];
395			$this->img->current_color = $colmap[$y];
396			$this->img->Line($x1, $y, $x2, $y);
397			--$y;
398			}
399			} else {
400			while ($y >= $p1[1]) {
401			$x2 = $p2[0] + $slope * ($start - $y);
402			$this->img->current_color = $colmap[$y];
403			$this->img->Line($x1, $y, $x2, $y);
404			--$y;
405			}
406			}
407			}
408			}
409
410			/**
411			* PRIVATE METHODS.
412			*
413			* @param mixed $from_color
414			* @param mixed $to_color
415			* @param mixed $arr_size
416			* @param mixed $numcols
417			* @param mixed $colors
418			*/
419			// Add to the image color map the necessary colors to do the transition
420			// between the two colors using $numcolors intermediate colors
421			public function GetColArray($from_color, $to_color, $arr_size, &$colors, $numcols = 100)
422			{
423			if ($arr_size == 0) {
424			return;
425			}
426
427			// If color is given as text get it's corresponding r,g,b values
428			$from_color = $this->img->rgb->Color($from_color);
429			$to_color = $this->img->rgb->Color($to_color);
430
431			$rdelta = ($to_color[0] - $from_color[0]) / $numcols;
432			$gdelta = ($to_color[1] - $from_color[1]) / $numcols;
433			$bdelta = ($to_color[2] - $from_color[2]) / $numcols;
434			$colorsperstep = $numcols / $arr_size;
435			$prevcolnum = -1;
436			$from_alpha = $from_color[3];
437			$to_alpha = $to_color[3];
438			$adelta = ($to_alpha - $from_alpha) / $numcols;
439
440			for ($i = 0; $i < $arr_size; ++$i) {
441			$colnum = floor($colorsperstep * $i);
442			if ($colnum == $prevcolnum) {
443			$colors[$i] = $colidx;
			0 ignored issues – show Comprehensibility Best Practice introduced 2022-01-13 23:33 UTC by Report Bug Copy Issue Report The variable `$colidx` does not seem to be defined for all execution paths leading up to this point. Loading history...
444			} else {
445			$r = floor($from_color[0] + $colnum * $rdelta);
446			$g = floor($from_color[1] + $colnum * $gdelta);
447			$b = floor($from_color[2] + $colnum * $bdelta);
448			$alpha = $from_alpha + $colnum * $adelta;
449
450			$colidx = $this->img->rgb->Allocate(sprintf('#%02x%02x%02x', $r, $g, $b), $alpha);
451			$colors[$i] = $colidx;
452			}
453			$prevcolnum = $colnum;
454			}
455			}
456			} // @class
457

XoopsModules25x / xhelp

Gradient::FilledRectangle() F last analyzed 2022-05-31 04:27 UTC

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Gradient::FilledRectangle() F
last analyzed 2022-05-31 04:27 UTC