芝麻web文件管理V1.00

编辑当前文件:/home4/randall/public_html/sl/wp-content/plugins/essential-grid/includes/coloreasing.class.php
<?php /** * @author ThemePunch <info@themepunch.com> * @link https://www.themepunch.com/ * @copyright 2021 ThemePunch */ if (!defined('ABSPATH')) exit(); if (!class_exists('ESGColorEasing')) { class ESGColorEasing { public function __construct() { } /** * get the distance between two r/g/b values * @since 6.0 */ public static function distColor($px, $bx, $ex, $bv, $ev) { $num = abs(((($px - $bx) / ($ex - $bx)) * ($ev - $bv)) + $bv); $num = round($num); $num = min($num, 255); return max($num, 0); } /** * get the distance between two alpha values * @since 6.0 */ public static function distAlpha($px, $bx, $ex, $bv, $ev) { $bv = floatval($bv); $num = floatval((($px - $bx) / ($ex - $bx)) * ($ev - $bv)); $num = number_format($num, 2, '.', ''); $num = abs($num + $bv); $num = min($num, 1); return max($num, 0); } /** * insert easing colors to a gradient * @since 6.0 */ public static function insertPoints($start, $end, &$ar, $easing, $strength) { $startPos = $start['position']; $endPos = $end['position']; if ($startPos > $endPos) return; $positions = array(); $point; $val; $px; for ($i = 0; $i < $strength; $i++) { $val = RSColorEasing::easing($i, 0, 1, $strength, $easing); $val = floatval($val); $val = number_format($val, 2, '.', ''); $val = $val * ($endPos - $startPos) + $startPos; if ($val > $startPos && $val < $endPos) $positions[] = $val; } $len = count($positions); $num = floatval(($endPos - $startPos) / ($len + 1)); $count = number_format($num, 2, '.', ''); $p = $count + $startPos; for ($i = 0; $i < $len; $i++) { $px = $positions[$i]; if ($px === $start['position']) continue; $r = RSColorEasing::distColor($px, $startPos, $endPos, $start['r'], $end['r']); $g = RSColorEasing::distColor($px, $startPos, $endPos, $start['g'], $end['g']); $b = RSColorEasing::distColor($px, $startPos, $endPos, $start['b'], $end['b']); $a = RSColorEasing::distAlpha($px, $startPos, $endPos, $start['a'], $end['a']); $startA = RSColorpicker::sanitizeAlpha($start['a']); $endA = RSColorpicker::sanitizeAlpha($end['a']); $point = array( 'position' => $p, 'r' => $start['r'] !== $end['r'] ? round($r) : $start['r'], 'g' => $start['g'] !== $end['g'] ? round($g) : $start['g'], 'b' => $start['b'] !== $end['b'] ? round($b) : $start['b'], 'a' => $startA !== $endA ? RSColorpicker::sanitizeAlpha($a) : $startA ); $p += $count; $p = number_format(floatval($p), 2, '.', ''); $ar[] = $point; } } /** * easing equations * @since 6.0 */ public static function easing($n, $t, $e, $u, $ease = 'sine.easeinout') { $easing = array('sine, easeinout'); if (is_string($ease) && strpos($ease, '.') !== false) { $ease = explode('.', $ease); if (count($ease) === 2) $easing = [$ease[0], $ease[1]]; } switch ($easing[0]) { case 'quint': switch ($easing[1]) { case 'easein': return $e * (($n = $n / $u - 1) * $n * $n * $n * $n + 1) + $t; break; case 'easeout': return $e * ($n /= $u) * $n * $n * $n * $n + $t; break; case 'easeinout': return ($n /= $u / 2) < 1 ? $e / 2 * $n * $n * $n * $n * $n + $t : $e / 2 * (($n -= 2) * $n * $n * $n * $n + 2) + $t; break; } break; case 'quad': switch ($easing[1]) { case 'easein': return $e * ($n /= $u) * $n + $t; break; case 'easeout': return -$e * ($n /= $u) * ($n - 2) + $t; break; case 'easeinout': return ($n /= $u / 2) < 1 ? $e / 2 * $n * $n + $t : -$e / 2 * (--$n * ($n - 2) - 1) + $t; break; } break; case 'quart': switch ($easing[1]) { case 'easein': return $e * ($n /= $u) * $n * $n * $n + $t; break; case 'easeout': return -$e * (($n = $n / $u - 1) * $n * $n * $n - 1) + $t; break; case 'easeinout': return ($n /= $u / 2) < 1 ? $e / 2 * $n * $n * $n * $n + $t : -$e / 2 * (($n -= 2) * $n * $n * $n - 2) + $t; break; } break; case 'cubic': switch ($easing[1]) { case 'easein': return $e * ($n /= $u) * $n * $n + $t; break; case 'easeout': return $e * (($n = $n / $u - 1) * $n * $n + 1) + $t; break; case 'easeinout': return ($n /= $u / 2) < 1 ? $e / 2 * $n * $n * $n + $t : $e / 2 * (($n -= 2) * $n * $n + 2) + $t; break; } break; case 'circ': switch ($easing[1]) { case 'easein': return -$e * (sqrt(1 - ($n /= $u) * $n) - 1) + $t; break; case 'easeout': return $e * sqrt(1 - ($n = $n / $u - 1) * $n) + $t; break; case 'easeinout': return ($n /= $u / 2) < 1 ? -$e / 2 * (sqrt(1 - $n * $n) - 1) + $t : $e / 2 * (sqrt(1 - ($n -= 2) * $n) + 1) + $t; break; } break; case 'expo': switch ($easing[1]) { case 'easein': return 0 === $n ? $t : $e * pow(2, 10 * ($n / $u - 1)) + $t; break; case 'easeout': return $n === $u ? $t + $e : $e * (1 - pow(2, -10 * $n / $u)) + $t; break; case 'easeinout': if (0 === $n) { return $t; } elseif ($n === $u) { return $t + $e; } elseif (($n /= $u / 2) < 1) { return $e / 2 * pow(2, 10 * ($n - 1)) + $t; } else { return $e / 2 * (2 - pow(2, -10 * --$n)) + $t; } break; } break; case 'bounce': switch ($easing[1]) { case 'easein': return $e - RSColorEasing::easing($u - $n, 0, $e, $u, 'bounce.easeout') + $t; break; case 'easeout': if (($n /= $u) < (1 / 2.75)) { return $e * (7.5625 * $n * $n) + $t; } else if ($n < (2 / 2.75)) { return $e * (7.5625 * ($n -= (1.5 / 2.75)) * $n + 0.75) + $t; } else if ($n < (2.5 / 2.75)) { return $e * (7.5625 * ($n -= (2.25 / 2.75)) * $n + 0.9375) + $t; } else { return $e * (7.5625 * ($n -= (2.625 / 2.75)) * $n + 0.984375) + $t; } break; case 'easeinout': if ($n < $u / 2) { return RSColorEasing::easing($n * 2, 0, $e, $u, 'bounce.easein') * 0.5 + $t; } else { return RSColorEasing::easing($n * 2 - $u, 0, $e, $u, 'bounce.easeout') * 0.5 + $e * 0.5 + $t; } break; } break; default: switch ($easing[1]) { case 'easein': return -$e * cos($n / $u * (M_PI / 2)) + $e + $t; break; case 'easeout': return $e * sin($n / $u * (M_PI / 2)) + $t; break; default: return -$e / 2 * (cos(M_PI * $n / $u) - 1) + $t; } } return 0; } } }