ffnord-con-2015-2 hinzugefügt

.gitignore

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+#alle Dateien ignorieren...
+*
+
+#ausser...
+!/ffnord-con-2015-2
+!/ffnord-con-2015-2/*
+!/ffnord-con-2015-2/*/*
+!/ffnord-con-2015-2/*/*/*
+!.gitignore
+!README

ffnord-con-2015-2/29c3/LICENSE.txt

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+Font is Source Code Pro:
+  http://store1.adobe.com/cfusion/store/html/index.cfm?event=displayFont&code=SOUC10003050

ffnord-con-2015-2/29c3/node.lua

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+gl.setup(1280, 720)
+
+local scramble = require "scramble"
+
+util.auto_loader(_G)
+
+function write(font, x, y, text, size, r, g, b, a)
+    local s = scramble.scramble(text)
+    return function()
+        font:write(x, y, s(), size, r, g, b, a)
+    end
+end
+
+local lines = {
+    write(light, 350, 0 * 144, "f/f.n[o", 140, 1   ,.706,0   ,.8),
+    write(light, 50 , 1 * 144, "r.d/-]>", 140, .8  ,.8  ,.7  ,.8),
+    write(light, 600, 2 * 144, "c.o-n/ ", 140, .863,0   ,.404,.8),
+    write(light, 50 , 3 * 144, " / -2.0", 140, .7  ,.7  ,.7  ,.8),
+    write(bold,  350, 4 * 144, "1(5).-2", 140, 0   ,.62 ,.878,.8),
+}
+
+function node.render()
+    for i = 1, #lines do
+        lines[i]()
+    end
+end

ffnord-con-2015-2/29c3/scramble.lua

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+local sys = require "sys"
+local math = require "math"
+local table = require "table"
+local base = _G
+
+module("scramble")
+
+function scramble(text)
+    local all_breaks = '/.-{}()[]<>|,;!?'
+    local breaks = {}
+    for idx = 1, #all_breaks do
+        breaks[all_breaks:sub(idx, idx)]=true
+    end
+    -- print(#breaks)
+    local mode = "up"
+    local interval = 0.2
+    local swap_end
+    local next_action = sys.now() + interval
+    local stack = {}
+
+    local function is_break(text, pos)
+        local char = text:sub(pos, pos)
+        local is_break = breaks[char]
+        -- print(char, is_break)
+        return is_break, char
+    end
+    local function random_break()
+        local pos = math.random(1, #all_breaks)
+        return all_breaks:sub(pos, pos)
+    end
+    local function replace2(text, pos, c1, c2)
+        return text:sub(1, pos-1) .. c1 .. c2 .. text:sub(pos+2)
+    end
+    local function replace(text, pos, c)
+        return text:sub(1, pos-1) .. c  .. text:sub(pos+1)
+    end
+
+    local function get()
+        local now = sys.now()
+        if now > next_action then
+            -- print(mode)
+            if mode == "up" then
+                local pos, is_1_break, is_2_break, char_1, char_2
+                repeat
+                    pos = math.random(1, #text-1)
+                    is_1_break, char_1 = is_break(text, pos)
+                    is_2_break, char_2 = is_break(text, pos+1)
+                until is_1_break ~= is_2_break
+                -- print(pos, is_1_break, is_2_break)
+
+                if is_1_break then
+                    table.insert(stack, {pos, random_break(), char_2})
+                    text = replace2(text, pos, char_2, random_break())
+                else
+                    table.insert(stack, {pos, char_1, random_break()})
+                    text = replace2(text, pos, random_break(), char_1)
+                end
+                interval = interval - 0.01
+                if interval < 0.02 then
+                    mode = "down"
+                end
+            elseif mode == "down" then
+                local pos, char1, char2 = base.unpack(table.remove(stack, #stack))
+                text = replace2(text, pos, char1, char2)
+                interval = interval + 0.01
+                if #stack == 0 then
+                    mode = "swap"
+                    swap_end = now + 15
+                    interval = 2
+                end
+            elseif mode == "swap" then
+                local pos, is_break_char, _
+                repeat
+                    pos = math.random(1, #text-1)
+                    is_break_char, _ = is_break(text, pos)
+                until is_break_char
+                text = replace(text, pos, random_break())
+                if now > swap_end then
+                    interval = 0.2
+                    mode = "up"
+                end
+            end
+            next_action = now + interval
+        end
+        return text
+    end
+    return get
+end
+
+

ffnord-con-2015-2/31c3/COPYRIGHT

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+Created by Florian Wesch <fw@dividuum.de>
+
+This work is licensed under a Creative Commons Attribution 4.0 International License.
+http://creativecommons.org/licenses/by/4.0/
+
+The tiles.png, package.png, screenshot.jpg are based on the design by graphorama
+http://www.graphorama.de/blog/31c3-das-design/

ffnord-con-2015-2/31c3/README.creole

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+= A 31c3 themed background pattern
+
+{{screenshot.jpg|Screenshot}}
+
+Background pattern for the 
+[[http://events.ccc.de/congress/2014/wiki/Static:Main_Page|31c3 conference in Hamburg]].

ffnord-con-2015-2/31c3/node.json

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+{
+    "name": "31c3 Pattern",
+    "options": []
+}

ffnord-con-2015-2/31c3/node.lua

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+gl.setup(NATIVE_WIDTH, NATIVE_HEIGHT)
+
+sys.set_flag("slow_gc")
+
+util.resource_loader{
+    "shader31c3.frag";
+    "noise.png";
+    "tiles.png";
+}
+
+function node.render()
+    local now = sys.now()
+
+    local x = math.sin(now/62) * 320
+    local y = math.cos(now/128) * 200
+
+    gl.perspective(80 + math.cos(now/5) * 3, x + math.sin(now/14)*10, y + math.cos(now/14.4)*20, -100, x, y, 0)
+    gl.rotate(math.cos(now/9)*5, 0, 0, 1)
+
+    shader31c3:use{
+        time = now / 1234.5;
+        noise = noise;
+        tile_res = {16, 16};
+        res = {16.0 * 12, 16.0 * 12};
+    }
+
+    local size = 40
+    tiles:draw(-16*size, -16*size, 16*size, 16*size)
+end

ffnord-con-2015-2/31c3/package.json

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+{
+    "name": "Animated background pattern",
+    "author": "fw@dividuum.de",
+    "desc": "Background pattern created for the 31c3 conference in Hamburg",
+    "repository": "https://github.com/info-beamer/package-31c3-background"
+}

ffnord-con-2015-2/31c3/shader31c3.frag

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+uniform sampler2D Texture;
+uniform sampler2D noise;
+varying vec2 TexCoord;
+uniform float time;
+uniform vec2 res;
+uniform vec2 tile_res;
+
+const vec2 one = vec2(1.0, 1.0);
+
+void main() {
+    vec2 tcoord_res = TexCoord * res;
+    vec2 noise_vec1 = vec2(0.0, time * 0.8);
+    vec2 noise_vec2 = noise_vec1 + vec2(time * 0.9, 0.0);
+
+    vec2 pos = floor(tcoord_res) / res;
+
+    float foo = texture2D(noise, mod(pos * 41.0 + noise_vec1, one)).x;
+    float bar = texture2D(noise, mod(pos * 5.0 + noise_vec2, one)).x;
+
+    vec2 t = vec2(foo, bar);
+    t = floor(t * tile_res) / tile_res;
+
+    // gl_FragColor = vec4(t, 0.0, 1.0);
+    gl_FragColor = vec4(texture2D(
+        Texture, 
+        mod(tcoord_res, one) / tile_res + t
+    ).rgb, 1.0);
+}

ffnord-con-2015-2/README

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+Animation für die ffnord->con2015.2 in Hamburg; zusammengeabaut aus Animationen vom 29c3 [ https://github.com/dividuum/info-beamer-nodes/tree/master/29c3-logo ] und 31c3 [ https://github.com/info-beamer/package-31c3-background ]
+
+Die 31C3-logos im Hintergrund sollen noch gegen Freifunklogos getauscht werden.

ffnord-con-2015-2/node.lua

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+gl.setup(1280, 720)
+
+function node.render()
+    resource.render_child("31c3"):draw(0, 0, 1280, 720)
+    resource.render_child("29c3"):draw(0, 0, 1280, 720)
+end