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Title	Spinny
ID	5344191433801728
Created	10 years ago, 1452460790299
Updated	9 years ago, 1453385801499
Code	/** Project name: Spinny * Not just a spinny * * · Uses RGB and HSB alternately * · Changes frameRate * · Alternates between redrawing and not redrawing the background * · Scene control via frame counting and mathematical legerdemain * · draw STOPS instead of continuing indefinitely * * @notice: 17 January 2016 * * a program to say thank you to the minions: * * https://www.khanacademy.org/computer-programming/for-the-minions/6726089762537472 * * * @notice: 13 January 2016 * * working on an enhancement * * @trek * 10 January 2016 * * @history * minor edit: 11 January 20016 * * · text message rises from below canvas * · text message outlined in white * * minor edit: 12 January 2016 * * · rearranged utility code functions * · implemented setSceneParameters * · surprises for the minions * * minor edit: 13 January 2016 * * · more surprises for the minions * * minor edit: 14 January 2016 * * · still more surprises for the minions! */ /* constants **/ { var MAX = 255; // general color range max var LIM = 250; // hsb max // don't set these > 60 frameRate constants var SLOWER = 30; // regular speed var FASTER = 60; // quick time var STEP = 0.10; // opacity var INIT_ORG = 0.01; // initial origin var TURN = 0.05; // angle rotation var PI_DIV = 18; var ANG_INCR = PI / PI_DIV; // angle increment var LIPSE_W = 8; // ellipse width var LIPSE_H = 4; // ellipse height var S_DIP = 0.45; // hsb increment var ASH_NAZG = width 0.725; // the "one" ring var MARK = 15; // ring radius interval var ASH_NAZG = 290; // the "one" ring var INTERVAL = 300; // frameCount interval var RUNTIME = 4; // scene cycles var SHUTDOWN = 5; // final scene var BG = color( 0, 0, 0); var MSG_FG = color(245, 220, 80); var MSG_SIZE = height * 0.22; var MSG_GROW = 1; var MSG_TXT = ""; var MSG_Y = height / 2; } /* variables / { var rings = []; var useHSB = false; var phase = 0; var origin; var angle; var omega; var r; var g; var b; var s; var msg = 1; } / utility functions / { var forgeRings = function() { var ring = ASH_NAZG; rings = []; while ( ring >= width / 4 ) { rings.push(ring); ring -= MARK; } }; var initVariables = function() { angle = 0; origin = INIT_ORG; omega = MAX; s = LIM; r = MAX; g = MAX; b = MAX; }; var resetSystem = function() { forgeRings(); initVariables(); }; var manageVariables = function(phase) { origin += ( phase < 3 ? -TURN : TURN); omega -= STEP; s -= S_DIP; s = constrain(s, 0, LIM); r--; r = constrain(r, 0, MAX); g--; g = constrain(g, 0, MAX); }; var setSceneParameters = function(phase) { if ( phase % 2 !== 0 ) { useHSB = true; frameRate(SLOWER); colorMode(HSB, MAX); } else { useHSB = false; frameRate(FASTER); colorMode(RGB, MAX); background(BG); } }; var setupFinal = function() { frameRate(SLOWER); textAlign(CENTER, CENTER); var PREFIX = [ "donuts", "bacon", "bitcoins", "bananas", "bapels", "spam", "gelato", "waffles", "pancakes", "legos", "oobleck", "cookies", "tribbles", "loot", "13 knuts", "a tardis", "a hedgie", "1-ups", "pizza", "redstone", "a scarf", "a d20", "1000 EPs", "a pony", "pygmypuff", "a d12", "a snitch", "lembas", "pop-tart", "s'mores", "a wiki", "post owl", "fennec", "pokéball", "bezoar", "Palantír" ]; MSG_TXT = PREFIX[floor(random(0, PREFIX.length))] + "\nfor the\nminions!"; }; var outlineText = function(msg, x, y, offset) { text(msg, x + offset, y + offset); text(msg, x + offset, y - offset); text(msg, x - offset, y + offset); text(msg, x - offset, y - offset); }; } / scene rendering functions / { var renderScene = function(phase) { pushMatrix(); translate(width / 2, height / 2); for ( angle = origin; floor(angle) <= floor(TWO_PI + origin); angle += ANG_INCR ) { for( var index = 0; index < rings.length; index++ ) { if ( useHSB ) { fill(s, MAX, MAX); } else { fill(r, 0, b, omega); } ellipse(rings[index] cos(angle), rings[index] * sin(angle), LIPSE_W, LIPSE_H); rings[index] -= TURN; } } manageVariables(phase); popMatrix(); }; var renderFinal = function() { colorMode(HSB, MAX); background(s, MAX, MAX, MAX); textSize(msg); if ( msg < MSG_SIZE ) { msg++; } colorMode(RGB, MAX); fill( 0, 0, 0); outlineText(MSG_TXT, width / 2, MSG_Y, 3); fill(MAX, MAX, MAX); outlineText(MSG_TXT, width / 2, MSG_Y, 2); fill(MSG_FG); text(MSG_TXT, width / 2, MSG_Y); manageVariables(RUNTIME); }; } /* program execution / { /* initialization / angleMode = "radians"; frameRate(FASTER); noStroke(); background(BG); colorMode(HSB, MAX); textFont(createFont("Arial Bold")); forgeRings(); initVariables(); /* render scenes */ draw = function() { phase = frameCount / INTERVAL; if ( floor(phase) === RUNTIME && floor(phase) === frameCount / INTERVAL ) { initVariables(); setupFinal(); } else if ( RUNTIME < phase && phase < SHUTDOWN ) { renderFinal(); } else if ( floor(phase) === SHUTDOWN ) { noLoop(); // do not waste processing cycles!! } else if ( floor(phase) === frameCount / INTERVAL ) { resetSystem(); } else { setSceneParameters(floor(phase) + 1); renderScene(floor(phase) + 1); } }; } /* Program by created by trek: http://khanacademy.org/profile/trek ***/
Folds	45,75,77,89,91,177,179,224,240,266
Fork	false
Key	ag5zfmtoYW4tYWNhZGVteXIXCxIKU2NyYXRjaHBhZBiAgJjAuJC_CQw
Votes	186
Spin-Offs	21
Type	PJS
Width	400
Height	400
User Flagged	false
Origin Scratchpad	null
Hidden From Hotlist	false
Restricted Posting	false
By Child	false
Author Nick	trek
Author Name	trekcelt
Author ID	kaid_851318081167234425922340
Author Profile Access	COACH

Archive Data

Added	10 months ago, 1739380636659
Updated	10 months ago, 1739380636659
Source Deleted	unknown