Finally created an entry for #neonHexagonsWeekend. Move cursor.
Also, you can take a look at what other lovely people have created for this themed weekend.
Created
July 28, 2015 01:21
-
-
Save ee-in/57606f8eeae36f27a636 to your computer and use it in GitHub Desktop.
neon hex
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <canvas></canvas> | |
| <canvas></canvas> |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| /* because me lazy */ | |
| Object.getOwnPropertyNames(Math).map(function(p) { | |
| window[p] = Math[p]; | |
| }); | |
| var HEX_CRAD = 32, | |
| HEX_BG = '#171717', | |
| HEX_HL = '#2a2a2a', | |
| HEX_HLW = 2, | |
| HEX_GAP = 4, | |
| NEON_PALETE = [ | |
| '#cb3301', '#ff0066', | |
| '#ff6666', '#feff99', | |
| '#ffff67', '#ccff66', | |
| '#99fe00', '#fe99ff', | |
| '#ff99cb', '#fe349a', | |
| '#cc99fe', '#6599ff', | |
| '#00ccff', '#ffffff' | |
| ], | |
| T_SWITCH = 64, | |
| unit_x = 3*HEX_CRAD + HEX_GAP*sqrt(3), | |
| unit_y = HEX_CRAD*sqrt(3)*.5 + .5*HEX_GAP, | |
| off_x = 1.5*HEX_CRAD + HEX_GAP*sqrt(3)*.5, | |
| wp = NEON_PALETE.map(function(c) { | |
| var num = parseInt(c.replace('#', ''), 16); | |
| return { | |
| 'r': num >> 16 & 0xFF, | |
| 'g': num >> 8 & 0xFF, | |
| 'b': num & 0xFF | |
| }; | |
| }), | |
| nwp = wp.length, csi = 0, | |
| f = 1/T_SWITCH, | |
| c = document.querySelectorAll('canvas'), | |
| n = c.length, w, h, _min, | |
| ctx = [], | |
| grid, source = null, | |
| t = 0, request_id = null; | |
| var GridItem = function(x, y) { | |
| this.x = x || 0; | |
| this.y = y || 0; | |
| this.points = { 'hex': [], 'hl': [] }; | |
| this.init = function() { | |
| var x, y, a, ba = PI/3, | |
| ri = HEX_CRAD - .5*HEX_HLW; | |
| for(var i = 0; i < 6; i++) { | |
| a = i*ba; | |
| x = this.x + HEX_CRAD*cos(a); | |
| y = this.y + HEX_CRAD*sin(a); | |
| this.points.hex.push({ | |
| 'x': x, | |
| 'y': y | |
| }); | |
| if(i > 2) { | |
| x = this.x + ri*cos(a); | |
| y = this.y + ri*sin(a); | |
| this.points.hl.push({ | |
| 'x': x, | |
| 'y': y | |
| }); | |
| } | |
| } | |
| }; | |
| this.draw = function(ct) { | |
| for(var i = 0; i < 6; i++) { | |
| ct[(i === 0?'move':'line')+ 'To']( | |
| this.points.hex[i].x, | |
| this.points.hex[i].y | |
| ); | |
| } | |
| }; | |
| this.highlight = function(ct) { | |
| for(var i = 0; i < 3; i++) { | |
| ct[(i === 0?'move':'line')+ 'To']( | |
| this.points.hl[i].x, | |
| this.points.hl[i].y | |
| ); | |
| } | |
| }; | |
| this.init(); | |
| }; | |
| var Grid = function(rows, cols) { | |
| this.cols = cols || 16; | |
| this.rows = rows || 16; | |
| this.items = []; | |
| this.n = this.items.length; | |
| this.init = function() { | |
| var x, y; | |
| for(var row = 0; row < this.rows; row++) { | |
| y = row*unit_y; | |
| for(var col = 0; col < this.cols; col++) { | |
| x = ((row%2 == 0)?0:off_x) + col*unit_x; | |
| this.items.push(new GridItem(x, y)); | |
| } | |
| } | |
| this.n = this.items.length; | |
| }; | |
| this.draw = function(ct) { | |
| ct.fillStyle = HEX_BG; | |
| ct.beginPath(); | |
| for(var i = 0; i < this.n; i++) { | |
| this.items[i].draw(ct); | |
| } | |
| ct.closePath(); | |
| ct.fill(); | |
| ct.strokeStyle = HEX_HL; | |
| ct.beginPath(); | |
| for(var i = 0; i < this.n; i++) { | |
| this.items[i].highlight(ct); | |
| } | |
| ct.closePath(); | |
| ct.stroke(); | |
| }; | |
| this.init(); | |
| }; | |
| var init = function() { | |
| var s = getComputedStyle(c[0]), | |
| rows, cols; | |
| w = ~~s.width.split('px')[0]; | |
| h = ~~s.height.split('px')[0]; | |
| _min = .75*min(w, h); | |
| rows = ~~(h/unit_y) + 2; | |
| cols = ~~(w/unit_x) + 2; | |
| for(var i = 0; i < n; i++) { | |
| c[i].width = w; | |
| c[i].height = h; | |
| ctx[i] = c[i].getContext('2d'); | |
| } | |
| grid = new Grid(rows, cols); | |
| grid.draw(ctx[1]); | |
| if(!source) { | |
| source = { 'x': ~~(w/2), 'y': ~~(h/2) }; | |
| } | |
| neon(); | |
| }; | |
| var neon = function() { | |
| var k = (t%T_SWITCH)*f, | |
| rgb = { | |
| 'r': ~~(wp[csi].r*(1 - k) + | |
| wp[(csi + 1)%nwp].r*k), | |
| 'g': ~~(wp[csi].g*(1 - k) + | |
| wp[(csi + 1)%nwp].g*k), | |
| 'b': ~~(wp[csi].b*(1 - k) + | |
| wp[(csi + 1)%nwp].b*k) | |
| }, | |
| rgb_str = 'rgb(' + rgb.r + ',' + rgb.g + ',' + rgb.b + ')', | |
| light = ctx[0].createRadialGradient( | |
| source.x, source.y, 0, | |
| source.x, source.y, .875*_min | |
| ), stp; | |
| stp = .5 - .5*sin(7*t*f)*cos(5*t*f)*sin(3*t*f); | |
| light.addColorStop(0, rgb_str); | |
| light.addColorStop(stp, 'rgba(0,0,0,.03)'); | |
| fillBackground('rgba(0,0,0,.02)'); | |
| fillBackground(light); | |
| t++; | |
| if(t%T_SWITCH === 0) { | |
| csi++; | |
| if(csi === nwp) { | |
| csi = 0; | |
| t = 0; | |
| } | |
| } | |
| request_id = requestAnimationFrame(neon); | |
| }; | |
| var fillBackground = function(bg_fill) { | |
| ctx[0].fillStyle = bg_fill; | |
| ctx[0].beginPath(); | |
| ctx[0].rect(0, 0, w, h); | |
| ctx[0].closePath(); | |
| ctx[0].fill(); | |
| }; | |
| init(); | |
| addEventListener('resize', init, false); | |
| addEventListener('mousemove', function(e) { | |
| source = { 'x': e.clientX, 'y': e.clientY }; | |
| }, false); |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| html, body, canvas { height: 100%; } | |
| html { overflow: hidden; background: #020202; } | |
| body { margin: 0; } | |
| canvas { | |
| position: absolute; | |
| width: 100%; | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment