galaxy.php

<?php
$width = 800;
$height = 800;
$centerX = $width / 2;
$centerY = $height / 2;

$img = imagecreate($width, $height);
$backgroundColor = imagecolorallocate($img, 220, 220, 220);
$orange = imagecolorallocate($img, 255, 165, 0);
$black = imagecolorallocate($img, 0, 0, 0);
$violet = imagecolorallocate($img, 238, 130, 238);
$green = imagecolorallocate($img, 0, 128, 0);
$blue = imagecolorallocate($img, 0, 0, 128);

$drawSun = function () use (&$img, $centerX, $centerY, $orange, $violet, $black) {
    imagefilledarc($img, $centerX, $centerY, 15, 15, 0, 360, $orange, IMG_ARC_PIE);
    imagearc($img, $centerX, $centerY, 65, 65, 0, 360, $violet);
};
;
$drawPlanet = function ($orbit,$startGrid,$color) use (&$img, $centerX, $centerY, $black) {
    $planetX = $centerX + sin(deg2rad($startGrid)) * 50 * $orbit;
    $planetY = $centerY + cos(deg2rad($startGrid)) * 50 * $orbit;
    imagearc($img, $centerX, $centerY, 50*$orbit, 50*$orbit, 0, 360, $black);
    imagefilledarc($img, $planetX, $planetY, 8, 8, 0, 360, $color, IMG_ARC_PIE);
};
$drawBackground = function () use ($drawSun,$drawPlanet,$green) {
    $drawSun();
    $drawPlanet(2,350,$green);
};

$drawBackground();


header("Content-type: image/png");
imagepng($img);
imagedestroy($img);

die();
/**
 * // Converts from degrees to radians.
 * Math . radians = function (degrees) {
 * return degrees * Math . PI / 180;
 * };
 *
 * // Converts from radians to degrees.
 * Math . degrees = function (radians) {
 * return radians * 180 / Math . PI;
 * };
 *
 * canvasWidth = $("canvas") . width();
 * canvasHeight = $("canvas") . height();
 *
 * canvas = document . getElementById('canvas');
 * context = canvas . getContext('2d');
 *
 * context . clearRect(0, 0, canvas . width, canvas . height);
 *
 * context . font = "12px Arial";
 *
 * centerX = canvasWidth / 2;
 * centerY = canvasHeight / 2;
 *
 * drawWorld(0);
 * drawBackground();
 *
 * // draw paths
 * $("#tick") . change(function () {
 * context . clearRect(0, 0, canvas . width, canvas . height);
 * drawWorld($("#tick") . val());
 * drawBackground();
 * });
 *
 * function drawBackground()
 * {
 * //sun
 * centerX = (canvasWidth / 2);
 * centerY = (canvasWidth / 2);
 * context . beginPath();
 * context . arc(centerX, centerY, 10, 0, 2 * Math . PI, false);
 * context . lineWidth = 5;
 * context . fillStyle = 'orange';
 * context . fill();
 * context . strokeStyle = 'orange';
 * context . stroke();
 * context . fillStyle = 'black';
 * context . fillText("Sonne", centerX + 10, centerY);
 *
 *
 * //orbits
 * for (orbit = 2; orbit < 7; orbit++)
 * {
 * for (grad = 0; grad < 360; grad++)
 * {
 * centerX = (canvasWidth / 2) + Math . sin(grad) * 50 * orbit;
 * centerY = (canvasWidth / 2) + Math . cos(grad) * 50 * orbit;
 * context . beginPath();
 * context . arc(centerX, centerY, 1, 0, 2 * Math . PI, false);
 * context . lineWidth = 1;
 * context . fillStyle = 'black';
 * context . fill();
 * context . strokeStyle = 'black';
 * context . stroke();
 * }
 * }
 * //gravitation belt
 * for (grad = 0; grad < 360; grad++)
 * {
 * centerX = (canvasWidth / 2) + Math . sin(grad) * 50 * 1;
 * centerY = (canvasWidth / 2) + Math . cos(grad) * 50 * 1;
 * context . beginPath();
 * context . arc(centerX, centerY, 1, 0, 2 * Math . PI, false);
 * context . lineWidth = 1;
 * context . fillStyle = 'violet';
 * context . fill();
 * context . strokeStyle = 'violet';
 * context . stroke();
 * }
 *
 * startGrad = 230;
 * startOrbit = 2;
 * //start planet
 * centerX = (canvasWidth / 2) + (Math . sin(Math . radians(startGrad)) * 50 * startOrbit);
 * centerY = (canvasWidth / 2) + (Math . cos(Math . radians(startGrad)) * 50 * startOrbit);
 * context . beginPath();
 * context . arc(centerX, centerY, 3, 0, 2 * Math . PI, false);
 * context . lineWidth = 5;
 * context . fillStyle = 'green';
 * context . fill();
 * context . strokeStyle = 'green';
 * context . stroke();
 * context . fillStyle = 'black';
 * context . fillText("Start Planet", centerX + 10, centerY);
 * }
 *
 * function drawWorld(tick)
 * {
 *
 * targetGrad = 0;
 * targetOrbit = 6;
 *
 * // draw target
 * centerX = (canvasWidth / 2) + (Math . sin(Math . radians(targetGrad + (tick * 0.25 / targetOrbit))) * 50 * targetOrbit);
 * centerY = (canvasWidth / 2) + (Math . cos(Math . radians(targetGrad + (tick * 0.25 / targetOrbit))) * 50 * targetOrbit);
 *
 * context . beginPath();
 * context . arc(centerX, centerY, 3, 0, 2 * Math . PI, false);
 * context . lineWidth = 5;
 * context . fillStyle = 'red';
 * context . fill();
 * context . strokeStyle = 'red';
 * context . stroke();
 * context . fillStyle = 'black';
 * context . fillText("Ziel Planet", centerX + 10, centerY);
 *
 *
 * planet2Grad = 129;
 * planet2Orbit = 3;
 *
 * centerX = (canvasWidth / 2) + (Math . sin(Math . radians(planet2Grad + (tick * 0.25 / planet2Orbit))) * 50 * planet2Orbit);
 * centerY = (canvasWidth / 2) + (Math . cos(Math . radians(planet2Grad + (tick * 0.25 / planet2Orbit))) * 50 * planet2Orbit);
 *
 * context . beginPath();
 * context . arc(centerX, centerY, 3, 0, 2 * Math . PI, false);
 * context . lineWidth = 5;
 * context . fillStyle = 'blue';
 * context . fill();
 * context . strokeStyle = 'blue';
 * context . stroke();
 * context . fillStyle = 'black';
 * context . fillText("Anderer Planet", centerX + 10, centerY);
 *
 *
 * context . beginPath();
 * context . arc(centerX, centerY, 25, 0, 2 * Math . PI, false);
 * context . lineWidth = 1;
 * context . fillStyle = 'blue';
 * context . stroke();
 * context . fillStyle = 'blue';
 *
 * planet3Grad = 340;
 * planet3Orbit = 4;
 *
 * centerX = (canvasWidth / 2) + (Math . sin(Math . radians(planet3Grad + (tick * 0.25 / planet3Orbit))) * 50 * planet3Orbit);
 * centerY = (canvasWidth / 2) + (Math . cos(Math . radians(planet3Grad + (tick * 0.25 / planet3Orbit))) * 50 * planet3Orbit);
 *
 * context . beginPath();
 * context . arc(centerX, centerY, 3, 0, 2 * Math . PI, false);
 * context . lineWidth = 5;
 * context . fillStyle = 'blue';
 * context . fill();
 * context . strokeStyle = 'blue';
 * context . stroke();
 * context . fillStyle = 'black';
 * context . fillText("Anderer Planet", centerX + 10, centerY);
 *
 *
 * context . beginPath();
 * context . arc(centerX, centerY, 25, 0, 2 * Math . PI, false);
 * context . lineWidth = 1;
 * context . fillStyle = 'blue';
 * context . stroke();
 * context . fillStyle = 'blue';
 *
 * planet4Grad = 340;
 * planet4Orbit = 5;
 *
 * centerX = (canvasWidth / 2) + (Math . sin(Math . radians(planet4Grad + (tick * 0.25 / planet4Orbit))) * 50 * planet4Orbit);
 * centerY = (canvasWidth / 2) + (Math . cos(Math . radians(planet4Grad + (tick * 0.25 / planet4Orbit))) * 50 * planet4Orbit);
 *
 * context . beginPath();
 * context . arc(centerX, centerY, 3, 0, 2 * Math . PI, false);
 * context . lineWidth = 5;
 * context . fillStyle = 'blue';
 * context . fill();
 * context . strokeStyle = 'blue';
 * context . stroke();
 * context . fillStyle = 'black';
 * context . fillText("Anderer Planet", centerX + 10, centerY);
 *
 *
 * context . beginPath();
 * context . arc(centerX, centerY, 25, 0, 2 * Math . PI, false);
 * context . lineWidth = 1;
 * context . fillStyle = 'blue';
 * context . stroke();
 * context . fillStyle = 'blue';
 *
 * }