turns out 1 element in every dropdown wasnt rendering

and i never knew

.vscode/settings.json

@@ -0,0 +1,7 @@
+{
+  "Lua.runtime.version": "LuaJIT",
+  "Lua.workspace.library": [
+    "${3rd}/love2d/library"
+  ],
+  "Lua.workspace.checkThirdParty": false
+}

dropdown.lua

@@ -0,0 +1,234 @@
+local self = {}
+
+local dropdowns = {}
+
+local dropdownValueCache = {}
+
+local maxDropdown = 16
+
+self.openDropdown = 0
+local dropdownScroll = 0
+local dropdownScrollE = 0
+
+local function skeys(t)
+  local k = {}
+  for n,v in pairs(t) do table.insert(k, {n, v}) end
+  table.sort(k, function(a, b) return a[2].i < b[2].i end)
+  local k2 = {}
+  for _,v in ipairs(k) do table.insert(k2, v[1]) end
+  return k2
+end
+
+function self.get(index)
+  return dropdowns[index]
+end
+
+function self.selected(index)
+  return dropdowns[index].options[dropdowns[index].selected]
+end
+
+function self.kget(key)
+  for _, v in ipairs(dropdowns) do
+    if v.name == key then
+      return v
+    end
+  end
+end
+
+function self.kselected(key)
+  for _, v in ipairs(dropdowns) do
+    if v.name == key then
+      return v.options[v.selected]
+    end
+  end
+end
+
+local dropdownId
+local function insertDropdown(tab, f)
+  dropdownId = dropdownId + 1
+  f.selected = (self.kget(f.name) or dropdownValueCache[f.name] or {selected = 1}).selected
+  f.selected = (f.selected - 1) % #f.options + 1
+  return table.insert(tab, f)
+end
+function self.createDropdowns()
+  local d = {}
+  dropdownId = 0
+  insertDropdown(d, {
+    x = outerpadding,
+    y = outerpadding,
+    width = dropdownWidth,
+    options = {
+      'Preview Ease',
+      'Mix Eases',
+      'Create Ease'
+    },
+    name = 'mode'
+  })
+
+  if d[dropdownId].selected == 1 then -- preview ease
+    insertDropdown(d, {
+      x = outerpadding + dropdownWidth + padding,
+      y = outerpadding,
+      width = dropdownWidth,
+      options = skeys(ease.eases),
+      name = 'ease1'
+    })
+    ease.ease = ease.eases[d[dropdownId].options[d[dropdownId].selected]].f
+  elseif d[dropdownId].selected == 2 then -- mix eases
+    insertDropdown(d, {
+      x = outerpadding + dropdownWidth + padding,
+      y = outerpadding,
+      width = dropdownWidth,
+      options = skeys(ease.eases),
+      name = 'ease1'
+    })
+    insertDropdown(d, {
+      x = outerpadding + dropdownWidth + padding + dropdownWidth + padding,
+      y = outerpadding,
+      width = dropdownWidth,
+      options = skeys(ease.eases),
+      name = 'ease2'
+    })
+    ease.ease = ease.mixEase(ease.eases[d[dropdownId - 1].options[d[dropdownId - 1].selected]].f, ease.eases[d[dropdownId].options[d[dropdownId].selected]].f, mixpoint)
+  elseif d[dropdownId].selected == 3 then -- create eases
+    insertDropdown(d, {
+      x = outerpadding + dropdownWidth + padding,
+      y = outerpadding,
+      width = dropdownWidth,
+      options = skeys(ease.eases),
+      name = 'ease1'
+    })
+  end
+
+  dropdowns = d
+  minEase = (self.kselected('ease1') and ease.eases[self.kselected('ease1')].min == -1) or (self.kselected('ease2') and ease.eases[self.kselected('ease2')].min == -1)
+end
+
+function self.update(dt)
+  if self.openDropdown ~= 0 then
+    dropdownScroll = math.max(dropdownScroll, -(#self.get(self.openDropdown).options - maxDropdown + 1))
+    dropdownScroll = math.min(dropdownScroll, 0)
+    dropdownScrollE = mix(dropdownScrollE, dropdownScroll, dt * 10)
+  end
+end
+
+function self.render()
+  local mx, my = love.mouse.getPosition()
+  for i,v in ipairs(dropdowns) do
+    local x, y, w, h = v.x, v.y, v.width, love.graphics.getFont():getHeight() + margin
+
+    love.graphics.setColor(0.06, 0.06, 0.12, 0.3)
+    if love.mouse.getX() > x and love.mouse.getX() < x + w and love.mouse.getY() > y and love.mouse.getY() < y + h then
+      love.graphics.setColor(0.8, 0.8, 1, love.mouse.isDown(1) and 0.4 or 0.3)
+    end
+    love.graphics.rectangle('fill', x, y, w, h)
+
+    love.graphics.setColor(1, 1, 1, 1)
+
+    love.graphics.rectangle('line', x, y, w, h)
+    love.graphics.print(self.selected(i), x + margin/2, y + margin/2)
+    love.graphics.rectangle('line', x + w - h, y, h, h)
+    love.graphics.polygon('line', x + w - h/2 + 0.3 * h, y + h/2 - 0.3 * h, x + w - h/2 - 0.3 * h, y + h/2 - 0.3 * h, x + w - h/2, y + h/2 + 0.3 * h)
+
+    if self.openDropdown == i then
+      for i,o in ipairs(v.options) do
+        local x, y, w, h = x, y + i * h, w, h
+
+        y = y + dropdownScrollE * h
+        local gi = y / h
+        if gi > (maxDropdown + 1) or gi < 1 then
+          goto continue
+        end
+
+        -- help
+        local a = (1 - math.min(math.max((1 - (maxDropdown - gi)) * (1 - (math.abs(dropdownScrollE) / (#v.options - maxDropdown + 1))), 0), 1)) * math.max(math.min(gi - 1, 1), 0)
+
+        love.graphics.setColor(0.06, 0.06, 0.12, 0.3 * a)
+        if mx > x and mx < x + w and my > y and my < y + h then
+          love.graphics.setColor(0.8, 0.8, 1, (love.mouse.isDown(1) and 0.4 or 0.3) * a)
+        end
+        love.graphics.rectangle('fill', x, y, w, h)
+
+        love.graphics.setColor(1, 1, 1, 0.75 * a)
+        love.graphics.rectangle('line', x, y, w, h)
+
+        love.graphics.setColor(1, 1, 1, 1 * a)
+        love.graphics.print(v.options[i], x + 2, y + 2)
+
+        ::continue::
+      end
+
+      -- scrollwheel
+
+      if #v.options > maxDropdown then
+        local displayed = maxDropdown / (#v.options)
+        local scroll = math.abs(dropdownScrollE) / (#v.options - maxDropdown + 1)
+        local size = margin
+
+        love.graphics.setColor(1, 1, 1, 0.9)
+        love.graphics.rectangle('fill', x + w - size, y + h + scroll * (1 - displayed) * (maxDropdown - 1) * h, size, displayed * (maxDropdown - 1) * h)
+      end
+    end
+  end
+end
+
+function self.mousepressed(x, y, m)
+  local clickedDropdown = false
+  for i,v in ipairs(dropdowns) do
+    local h = love.graphics.getFont():getHeight() + margin
+    if self.openDropdown == 0 then
+      if x > v.x and x < v.x + v.width and y > v.y and y < v.y + h + margin then
+        if m == 1 then
+          self.openDropdown = i
+          clickedDropdown = true
+          dropdownScroll = 0
+          dropdownScrollE = 0
+        elseif m == 3 then
+          dropdowns[i].selected = math.random(1, #dropdowns[i].options)
+          self.createDropdowns()
+        end
+      end
+    elseif self.openDropdown == i then
+      if x > v.x and x < v.x + v.width and y > v.y + h and y < v.y + h * (math.min(#v.options, maxDropdown) + 1) and m == 1 then
+        clickedDropdown = true
+      end
+    end
+  end
+
+  if not clickedDropdown and m == 1 then
+    self.openDropdown = 0
+    return true
+  end
+end
+
+function self.mousereleased(x, y, m)
+  for i,v in ipairs(dropdowns) do
+    local h = love.graphics.getFont():getHeight() + margin
+    if self.openDropdown == i then
+      if x > v.x and x < v.x + v.width and y > v.y + h and y < v.y + h * (math.min(#v.options, maxDropdown) + 1) and m == 1 then
+        v.selected = math.floor((y - v.y) / h - dropdownScrollE)
+        self.openDropdown = 0
+        dropdownValueCache[v.name] = {selected = v.selected}
+        self.createDropdowns()
+      end
+    end
+  end
+end
+
+function self.wheelmoved(x, y)
+  if self.openDropdown ~= 0 then
+    dropdownScroll = dropdownScroll + y
+  else
+    local mx, my = love.mouse.getPosition()
+    for i,v in ipairs(dropdowns) do
+      local h = love.graphics.getFont():getHeight() + margin
+      if mx > v.x and mx < v.x + v.width and my > v.y and my < v.y + h + margin then
+        dropdowns[i].selected = dropdowns[i].selected - math.floor(y)
+        dropdowns[i].selected = (dropdowns[i].selected - 1) % #dropdowns[i].options + 1
+        self.createDropdowns()
+      end
+    end
+  end
+end
+
+return self

ease.lua

@@ -0,0 +1,38 @@
+local self = {}
+
+local easelib = require 'easelib'
+
+function self.mixEase(e1, e2, point)
+  if not point then point = 0.5 end
+
+  return function(a)
+    if a < point then
+      return e1(a / point) * point
+    else
+      return e2((a - point) / (1 - point)) * (1 - point) + point
+    end
+  end
+end
+
+self.eases = {}
+for i,v in pairs(easelib) do
+  local min = 0
+  
+  local q = 10
+  for i = 0, q do
+    local s = v[2](i / q)
+    if s < 0 then min = -1 end
+  end
+
+  self.eases[v[1]] = {
+    f = v[2],
+    max = 1,
+    min = min,
+    i = i
+  }
+end
+
+self.ease = nil
+self.minEase = false
+
+return self

easelib.lua

@@ -33,100 +33,100 @@ table.insert(self, {'spike', function(t) return exp(-10 * abs(2 * t - 1)) end})
 table.insert(self, {'inverse', function(t) return t * t * (1 - t) * (1 - t) / (0.5 - t) end})
 
 table.insert(self, {'inSine', function(x)
-	return 1 - cos(x * (pi * 0.5))
+  return 1 - cos(x * (pi * 0.5))
 end})
 
 table.insert(self, {'outSine', function(x)
-	return sin(x * (pi * 0.5))
+  return sin(x * (pi * 0.5))
 end})
 
 table.insert(self, {'inOutSine', function(x)
-	return 0.5 - 0.5 * cos(x * pi)
+  return 0.5 - 0.5 * cos(x * pi)
 end})
 
 table.insert(self, {'inQuad', function(t) return t * t end})
 table.insert(self, {'outQuad', function(t) return -t * (t - 2) end})
 table.insert(self, {'inOutQuad', function(t)
-	t = t * 2
-	if t < 1 then
-		return 0.5 * t ^ 2
-	else
-		return 1 - 0.5 * (2 - t) ^ 2
-	end
+  t = t * 2
+  if t < 1 then
+    return 0.5 * t ^ 2
+  else
+    return 1 - 0.5 * (2 - t) ^ 2
+  end
 end})
 table.insert(self, {'inCubic', function(t) return t * t * t end})
 table.insert(self, {'outCubic', function(t) return 1 - (1 - t) ^ 3 end})
 table.insert(self, {'inOutCubic', function(t)
-	t = t * 2
-	if t < 1 then
-		return 0.5 * t ^ 3
-	else
-		return 1 - 0.5 * (2 - t) ^ 3
-	end
+  t = t * 2
+  if t < 1 then
+    return 0.5 * t ^ 3
+  else
+    return 1 - 0.5 * (2 - t) ^ 3
+  end
 end})
 table.insert(self, {'inQuart', function(t) return t * t * t * t end})
 table.insert(self, {'outQuart', function(t) return 1 - (1 - t) ^ 4 end})
 table.insert(self, {'inOutQuart', function(t)
-	t = t * 2
-	if t < 1 then
-		return 0.5 * t ^ 4
-	else
-		return 1 - 0.5 * (2 - t) ^ 4
-	end
+  t = t * 2
+  if t < 1 then
+    return 0.5 * t ^ 4
+  else
+    return 1 - 0.5 * (2 - t) ^ 4
+  end
 end})
 table.insert(self, {'inQuint', function(t) return t ^ 5 end})
 table.insert(self, {'outQuint', function(t) return 1 - (1 - t) ^ 5 end})
 table.insert(self, {'inOutQuint', function(t)
-	t = t * 2
-	if t < 1 then
-		return 0.5 * t ^ 5
-	else
-		return 1 - 0.5 * (2 - t) ^ 5
-	end
+  t = t * 2
+  if t < 1 then
+    return 0.5 * t ^ 5
+  else
+    return 1 - 0.5 * (2 - t) ^ 5
+  end
 end})
 table.insert(self, {'inExpo', function(t) return 1000 ^ (t - 1) - 0.001 end})
 table.insert(self, {'outExpo', function(t) return 1.001 - 1000 ^ -t end})
 table.insert(self, {'inOutExpo', function(t)
-	t = t * 2
-	if t < 1 then
-		return 0.5 * 1000 ^ (t - 1) - 0.0005
-	else
-		return 1.0005 - 0.5 * 1000 ^ (1 - t)
-	end
+  t = t * 2
+  if t < 1 then
+    return 0.5 * 1000 ^ (t - 1) - 0.0005
+  else
+    return 1.0005 - 0.5 * 1000 ^ (1 - t)
+  end
 end})
 table.insert(self, {'inCirc', function(t) return 1 - sqrt(1 - t * t) end})
 table.insert(self, {'outCirc', function(t) return sqrt(-t * t + 2 * t) end})
 table.insert(self, {'inOutCirc', function(t)
-	t = t * 2
-	if t < 1 then
-		return 0.5 - 0.5 * sqrt(1 - t * t)
-	else
-		t = t - 2
-		return 0.5 + 0.5 * sqrt(1 - t * t)
-	end
+  t = t * 2
+  if t < 1 then
+    return 0.5 - 0.5 * sqrt(1 - t * t)
+  else
+    t = t - 2
+    return 0.5 + 0.5 * sqrt(1 - t * t)
+  end
 end})
 
 table.insert(self, {'outBounce', function(t)
-	if t < 1 / 2.75 then
-		return 7.5625 * t * t
-	elseif t < 2 / 2.75 then
-		t = t - 1.5 / 2.75
-		return 7.5625 * t * t + 0.75
-	elseif t < 2.5 / 2.75 then
-		t = t - 2.25 / 2.75
-		return 7.5625 * t * t + 0.9375
-	else
-		t = t - 2.625 / 2.75
-		return 7.5625 * t * t + 0.984375
-	end
+  if t < 1 / 2.75 then
+    return 7.5625 * t * t
+  elseif t < 2 / 2.75 then
+    t = t - 1.5 / 2.75
+    return 7.5625 * t * t + 0.75
+  elseif t < 2.5 / 2.75 then
+    t = t - 2.25 / 2.75
+    return 7.5625 * t * t + 0.9375
+  else
+    t = t - 2.625 / 2.75
+    return 7.5625 * t * t + 0.984375
+  end
 end})
 table.insert(self, {'inBounce', function(t) return 1 - self.outBounce(1 - t) end})
 table.insert(self, {'inOutBounce', function(t)
-	if t < 0.5 then
-		return self.inBounce(t * 2) * 0.5
-	else
-		return self.outBounce(t * 2 - 1) * 0.5 + 0.5
-	end
+  if t < 0.5 then
+    return self.inBounce(t * 2) * 0.5
+  else
+    return self.outBounce(t * 2 - 1) * 0.5 + 0.5
+  end
 end})
 
 return self

graph.lua

@@ -0,0 +1,95 @@
+local self = {}
+
+local quality = 256
+local graph = {}
+
+function self.update(dt)
+  for i = 1, quality do
+    local a = (i - 1) / (quality - 1)
+    if not graph[i] then
+      graph[i] = ease.ease(a)
+    end
+  end
+  for i,v in ipairs(graph) do
+    local a = (i - 1) / (quality - 1)
+    local b = ease.ease(a)
+    if minEase then
+      b = b / 2 + 0.5
+    end
+    graph[i] = mix(v, b, math.min(dt * 18, 1))
+  end
+end
+
+function self.render()
+  local sw, sh = love.graphics.getDimensions()
+
+  if mode == 1 or mode == 2 then
+    local csize = 10 -- preview point size
+    local size = math.min((sw - outerpadding) - ((dropdown.kget('ease2') or dropdown.kget('ease1')).x + dropdownWidth + padding), sh - outerpadding * 2 - padding * 3 - csize)
+
+    local x, y, w, h = sw - outerpadding - size, outerpadding, size, size
+    love.graphics.setColor(1, 1, 1, 1)
+    love.graphics.rectangle('line', x, y, w, h)
+
+    -- grid
+    love.graphics.setColor(0.2, 0.2, 0.4, 0.2)
+    local gridsize = 64
+    for gx = 1, gridsize - 2 do
+      love.graphics.line(x + margin + gx * w/gridsize, y + margin, x + margin + gx * w/gridsize, y + h - margin)
+    end
+    for gy = 1, gridsize - 2 do
+      love.graphics.line(x + margin, y + margin + gy * h/gridsize, x + w - margin, y + margin + gy * h/gridsize)
+    end
+
+    -- mixease point
+    if mode == 2 then
+      love.graphics.setColor(1, 1, 1, 0.8)
+      love.graphics.line(x + margin + mixpoint * w, y, x + margin + mixpoint * w, y + h)
+    end
+
+    -- preview point
+    local t = love.timer.getTime() % 1
+    love.graphics.setColor(0.4, 0.4, 1, 0.4)
+    love.graphics.line(x + margin + t * w, y, x + margin + t * w, y + h)
+
+    -- y = 0 point
+    -- todo: this will break with eases that dont have the first point at y0
+    local py = graph[1]
+    love.graphics.setColor(0.7, 0.7, 0.7, 0.4 * (1 - math.abs(py - 0.5) / 0.5))
+    love.graphics.line(x, y + h - py * h, x + w, y + py * h)
+
+    -- polygone
+    -- this isnt done with a polygon because else itd waste a Bunch of ram and i kinda, dont want to do that?
+    love.graphics.setColor(1, 1, 1, 1)
+    local last = graph[1] or 0
+    for gx = 1, quality - 1 do
+      local a = gx/quality
+      local b = graph[gx + 1] or 0
+      local px, py = x + margin + gx * ((w - margin)/quality), y + h - margin - b * (h - margin * 2)
+      local ox, oy = x + margin + (gx - 1) * ((w - margin)/quality), y + h - margin - last * (h - margin * 2)
+      if math.abs(b - last) < 1 then
+        love.graphics.line(ox, oy, px, py)
+      end
+      last = b
+    end
+
+    -- preview
+    love.graphics.setColor(1, 1, 1, 0.2)
+    love.graphics.line(x + margin, y + h + padding * 2 + csize/2, x + w - margin, y + h + padding * 2 + csize/2)
+
+    love.graphics.setColor(0.4, 0.4, 1, 1)
+    local a1 = ease.ease(t)
+    local a2 = ease.ease(math.max(math.min(t - 0.1, 1), 0))
+    local da = a1
+    if love.timer.getTime() % 2 < 1 and math.floor(ease.ease(0) + 0.5) ~= math.floor(ease.ease(1) + 0.5) then
+      da = 1 - da
+    end
+    if minEase then
+      da = da / 2 + 0.5
+    end
+
+    love.graphics.ellipse('fill', x + margin + (w - margin * 2) * da, y + h + padding * 2 + csize/2, csize * (1 + math.min(math.abs(a1 - a2), 3) * 1.2), csize)
+  end
+end
+
+return self

main.lua

@@ -1,445 +1,132 @@
-local easelib = require 'easelib'
-
--- utils
-
-local function keys(t)
-  local k = {}
-  for n in pairs(t) do table.insert(k, n) end
-  return k
-end
-local function skeys(t)
-  local k = {}
-  for n,v in pairs(t) do table.insert(k, {n, v}) end
-  table.sort(k, function(a, b) return a[2].i < b[2].i end)
-  local k2 = {}
-  for _,v in ipairs(k) do table.insert(k2, v[1]) end
-  return k2
+local default_G = {}
+for k, v in pairs(_G) do
+  table.insert(default_G, k)
 end
 
-local function mix(x, y, a)
-  return x * (1 - a) + y * a
-end
+ease = require 'ease'
 
--- eases
+dropdown = require 'dropdown'
+graph = require 'graph'
 
-local function mixEase(e1, e2, point)
-  if not point then point = 0.5 end
-
-  return function(a)
-    if a < point then
-      return e1(a / point) * point
-    else
-      return e2((a - point) / (1 - point)) * (1 - point) + point
-    end
-  end
-end
-
-local eases = {}
-for i,v in pairs(easelib) do
-  local min = 0
-  
-  local q = 10
-  for i = 0, q do
-    local s = v[2](i / q)
-    if s < 0 then min = -1 end
-  end
-
-  eases[v[1]] = {
-    f = v[2],
-    max = 1,
-    min = min,
-    i = i
-  }
-end
-
-local ease
-local minEase = false
+require 'util' -- exports into global table
 
 -- rendering constants
 
-local padding = 6
-local margin = 4
-local quality = 256
+padding = 14
+outerpadding = 22
+margin = 6
+dropdownWidth = 106
 
-local mixpoint = 0.5
-local oldmixpoint = 0.5
+-- slider
+
+mixpoint = 0.5
+oldmixpoint = 0.5
 local mixpointtimer = 0 -- easter egg thing
 local mixpointspin = 0
 
-local maxDropdown = 16
-
--- graph
-
-local graph = {}
-
--- dropdown bullshit
-
-local dropdowns = {}
-
-local dropdownValueCache = {}
-
-local openDropdown = 0
-local dropdownScroll = 0
-local dropdownScrollE = 0
-
-local function selected(index)
-  return dropdowns[index].options[dropdowns[index].selected]
-end
-
-local function kget(key)
-  for _, v in ipairs(dropdowns) do
-    if v.name == key then
-      return v
-    end
-  end
-end
-
-local function kselected(key)
-  for _, v in ipairs(dropdowns) do
-    if v.name == key then
-      return v.options[v.selected]
-    end
-  end
-end
-
-local dropdownId
-local function insertDropdown(tab, f)
-  dropdownId = dropdownId + 1
-  f.selected = (kget(f.name) or dropdownValueCache[f.name] or {selected = 1}).selected
-  f.selected = (f.selected - 1) % #f.options + 1
-  return table.insert(tab, f)
-end
-local function createDropdowns()
-  local d = {}
-  dropdownId = 0
-  insertDropdown(d, {
-    x = padding,
-    y = padding,
-    width = 128,
-    options = {
-      'Preview Ease',
-      'Mix Eases',
-      'Create Ease'
-    },
-    name = 'mode'
-  })
-  
-  if d[dropdownId].selected == 1 then -- preview ease
-    insertDropdown(d, {
-      x = padding + 128 + padding,
-      y = padding,
-      width = 128,
-      options = skeys(eases),
-      name = 'ease1'
-    })
-    ease = eases[d[dropdownId].options[d[dropdownId].selected]].f
-  elseif d[dropdownId].selected == 2 then -- mix eases
-    insertDropdown(d, {
-      x = padding + 128 + padding,
-      y = padding,
-      width = 128,
-      options = skeys(eases),
-      name = 'ease1'
-    })
-    insertDropdown(d, {
-      x = padding + 128 + padding + 128 + padding,
-      y = padding,
-      width = 128,
-      options = skeys(eases),
-      name = 'ease2'
-    })
-    ease = mixEase(eases[d[dropdownId - 1].options[d[dropdownId - 1].selected]].f, eases[d[dropdownId].options[d[dropdownId].selected]].f, mixpoint)
-  elseif d[dropdownId].selected == 3 then -- create eases
-    insertDropdown(d, {
-      x = padding + 128 + padding,
-      y = padding,
-      width = 128,
-      options = skeys(eases),
-      name = 'ease1'
-    })
-  end
-  
-  minEase = (kselected('ease1') and eases[kselected('ease1')].min == -1) or (kselected('ease2') and eases[kselected('ease2')].min == -1)
-  
-  dropdowns = d
-end
-
 -- rendering
 
 function love.load()
-  createDropdowns()
+  dropdown.createDropdowns()
 end
 
 function love.update(dt)
-  for i = 1, quality do
-    local a = (i - 1) / (quality - 1)
-    if not graph[i] then
-      graph[i] = ease(a)
-    end
-  end
-  for i,v in ipairs(graph) do
-    local a = (i - 1) / (quality - 1)
-    local b = ease(a)
-    if minEase then
-      b = b / 2 + 0.5
-    end
-    graph[i] = mix(v, b, math.min(dt * 18, 1))
-  end
-  
+  graph.update(dt)
+
+  -- slider
   mixpointtimer = mix(mixpointtimer + math.abs(mixpoint - oldmixpoint), 0, math.min(dt * 8))
   oldmixpoint = mix(oldmixpoint, mixpoint, math.min(dt * 20, 1))
-  
+
   if mixpointtimer > 2 then
     mixpointtimer = mixpointtimer - 2
     mixpointspin = mixpointspin + 4
   end
-  
+
   mixpointspin = mix(mixpointspin, 0, dt * 3)
-  
-  if openDropdown ~= 0 then
-    dropdownScroll = math.max(dropdownScroll, -(#dropdowns[openDropdown].options - maxDropdown))
-    dropdownScroll = math.min(dropdownScroll, 0)
-    dropdownScrollE = mix(dropdownScrollE, dropdownScroll, dt * 10)
-  end
+
+  dropdown.update(dt)
 end
 
 function love.draw()
-  local mode = kget('mode').selected
+  mode = dropdown.kget('mode').selected
   local sw, sh = love.graphics.getDimensions()
   local mx, my = love.mouse.getPosition()
-  
+
   love.graphics.setColor(0.09, 0.09, 0.12, 1)
   love.graphics.rectangle('fill', 0, 0, sw, sh)
   love.graphics.setColor(0.08, 0.08, 0.1, 1)
   love.graphics.rectangle('line', 0, 0, sw, sh)
-  
+
   love.graphics.setColor(1, 1, 1, 1)
-  love.graphics.print('Box of Eases by oatmealine', padding, sh - love.graphics.getFont():getHeight() - padding)
-  
+  love.graphics.print('Box of Eases by oatmealine', outerpadding, sh - love.graphics.getFont():getHeight() - outerpadding)
+
   -- sliders
   -- yeah we do a lil' hardcoding
-  
+
   if mode == 2 then
-    local x, y, w, h = padding, padding * 2 + love.graphics.getFont():getHeight() + margin, 128, 32
-    
+    local x, y, w, h = outerpadding, outerpadding * 2 + love.graphics.getFont():getHeight() + margin, dropdownWidth, 32
+
     love.graphics.setColor(0.7, 0.7, 0.7, 0.4)
     love.graphics.line(x, y + h/2, x + w, y + h/2)
-    
+
     local sx, sy = x + w * oldmixpoint, y + h/2
     local ssize = h * 0.5
-    
+
     love.graphics.push()
-    
+
     love.graphics.translate(sx, sy)
     love.graphics.rotate((mixpoint - oldmixpoint) * 4 + mixpointspin * math.pi * 2)
-    
+
     love.graphics.setColor(0, 0, 0, 1)
-    if mx > sx - ssize/2 and mx < sx + ssize/2 and my > sy - ssize/2 and my < sy + ssize/2 and openDropdown == 0 then
+    if mx > sx - ssize/2 and mx < sx + ssize/2 and my > sy - ssize/2 and my < sy + ssize/2 and dropdown.openDropdown == 0 then
       love.graphics.setColor(0.2, 0.2, 0.3, 1)
     end
     love.graphics.rectangle('fill', -ssize/2, -ssize/2, ssize, ssize)
     love.graphics.setColor(1, 1, 1, 1)
     love.graphics.rectangle('line', -ssize/2, -ssize/2, ssize, ssize)
-    
+
     love.graphics.rotate((mixpoint - oldmixpoint) * -2)
-    
+
     love.graphics.setColor(1, 1, 1, 1)
     love.graphics.printf(math.floor(mixpoint * 100)/100, -ssize * 6, ssize - 2, ssize * 12, 'center')
-    
+
     love.graphics.pop()
-    
-    if mx > x and mx < x + w and my > y and my < y + h and love.mouse.isDown(1) and openDropdown == 0 then
+
+    if mx > x and mx < x + w and my > y and my < y + h and love.mouse.isDown(1) and dropdown.openDropdown == 0 then
       mixpoint = (mx - x) / w
-      createDropdowns()
+      dropdown.createDropdowns()
     end
   end
-  
+
   -- dropdowns
-  for i,v in ipairs(dropdowns) do
-    local x, y, w, h = v.x, v.y, v.width, love.graphics.getFont():getHeight() + margin
-    
-    love.graphics.setColor(0, 0, 0, 0.3)
-    if love.mouse.getX() > x and love.mouse.getX() < x + w and love.mouse.getY() > y and love.mouse.getY() < y + h then
-      love.graphics.setColor(0.8, 0.8, 1, love.mouse.isDown(1) and 0.4 or 0.3)
-    end
-    love.graphics.rectangle('fill', x, y, w, h)
-    
-    love.graphics.setColor(1, 1, 1, 1)
-        
-    love.graphics.rectangle('line', x, y, w, h)
-    love.graphics.print(selected(i), x + margin/2, y + margin/2)
-    love.graphics.rectangle('line', x + w - h, y, h, h)
-    love.graphics.polygon('line', x + w - h/2 + 0.3 * h, y + h/2 - 0.3 * h, x + w - h/2 - 0.3 * h, y + h/2 - 0.3 * h, x + w - h/2, y + h/2 + 0.3 * h)
-    
-    if openDropdown == i then
-      for i,o in ipairs(v.options) do
-        local x, y, w, h = x, y + i * h, w, h
-        
-        y = y + dropdownScrollE * h
-        local gi = y / h
-        if gi > maxDropdown or gi < 1 then
-          goto continue
-        end
-        
-        local a = 1 - math.min(math.max((1 - (maxDropdown - gi)) * (1 - (math.abs(dropdownScrollE) /(#v.options - maxDropdown))), 0), 1)
-      
-        love.graphics.setColor(0, 0, 0, 0.3 * a)
-        if mx > x and mx < x + w and my > y and my < y + h then
-          love.graphics.setColor(0.8, 0.8, 1, (love.mouse.isDown(1) and 0.4 or 0.3) * a)
-        end
-        love.graphics.rectangle('fill', x, y, w, h)
-      
-        love.graphics.setColor(1, 1, 1, 0.75 * a)
-        love.graphics.rectangle('line', x, y, w, h)
-        
-        love.graphics.setColor(1, 1, 1, 1 * a)
-        love.graphics.print(v.options[i], x + 2, y + 2)
-        
-        ::continue::
-      end
-      
-      -- scrollwheel
-    
-      if #v.options > maxDropdown then
-        local displayed = maxDropdown / #v.options
-        local scroll = math.abs(dropdownScrollE) / (#v.options - maxDropdown)
-        local size = margin
-      
-        love.graphics.setColor(1, 1, 1, 0.9)
-        love.graphics.rectangle('fill', x + w - size, y + h + scroll * (1 - displayed) * (maxDropdown - 1) * h, size, displayed * (maxDropdown - 1) * h)
-      end
-    end
-  end
- 
-  
+  dropdown.render()
+
   -- graph
-  
-  if mode == 1 or mode == 2 then
-    local csize = 10 -- preview point size
-    local size = math.min((sw - padding) - ((kget('ease2') or kget('ease1')).x + 128 + padding), sh - padding * 5 - csize)
-    
-    local x, y, w, h = sw - padding - size, padding, size, size
-    love.graphics.setColor(1, 1, 1, 1)
-    love.graphics.rectangle('line', x, y, w, h)
-    
-    -- grid
-    love.graphics.setColor(0.2, 0.2, 0.4, 0.2)
-    local gridsize = 64
-    for gx = 1, gridsize - 2 do
-      love.graphics.line(x + margin + gx * w/gridsize, y + margin, x + margin + gx * w/gridsize, y + h - margin)
-    end
-    for gy = 1, gridsize - 2 do
-      love.graphics.line(x + margin, y + margin + gy * h/gridsize, x + w - margin, y + margin + gy * h/gridsize)
-    end
-    
-    -- mixease point
-    if mode == 2 then
-      love.graphics.setColor(1, 1, 1, 0.8)
-      love.graphics.line(x + margin + mixpoint * w, y, x + margin + mixpoint * w, y + h)
-    end
-    
-    -- preview point
-    local t = love.timer.getTime() % 1
-    love.graphics.setColor(0.4, 0.4, 1, 0.4)
-    love.graphics.line(x + margin + t * w, y, x + margin + t * w, y + h)
-    
-    -- y = 0 point
-    -- todo: this will break with eases that dont have the first point at y0
-    local py = graph[1]
-    love.graphics.setColor(0.7, 0.7, 0.7, 0.4 * (1 - math.abs(py - 0.5) / 0.5))
-    love.graphics.line(x, y + h - py * h, x + w, y + py * h)
-    
-    -- polygone
-    -- this isnt done with a polygon because else itd waste a Bunch of ram and i kinda, dont want to do that?
-    love.graphics.setColor(1, 1, 1, 1)
-    local last = graph[1] or 0
-    for gx = 1, quality - 1 do
-      local a = gx/quality
-      local b = graph[gx + 1] or 0
-      local px, py = x + margin + gx * ((w - margin)/quality), y + h - margin - b * (h - margin * 2)
-      local ox, oy = x + margin + (gx - 1) * ((w - margin)/quality), y + h - margin - last * (h - margin * 2)
-      if math.abs(b - last) < 1 then
-        love.graphics.line(ox, oy, px, py)
-      end
-      last = b
-    end
-    
-    -- preview
-    love.graphics.setColor(1, 1, 1, 0.2)
-    love.graphics.line(x + margin, y + h + padding * 2 + csize/2, x + w - margin, y + h + padding * 2 + csize/2)
-    
-    love.graphics.setColor(0.4, 0.4, 1, 1)
-    local a1 = ease(t)
-    local a2 = ease(math.max(math.min(t - 0.1, 1), 0))
-    local da = a1
-    if love.timer.getTime() % 2 < 1 and math.floor(ease(0) + 0.5) ~= math.floor(ease(1) + 0.5) then
-      da = 1 - da
-    end
-    if minEase then
-      da = da / 2 + 0.5
-    end
-    
-    love.graphics.ellipse('fill', x + margin + (w - margin * 2) * da, y + h + padding * 2 + csize/2, csize * (1 + math.min(math.abs(a1 - a2), 3) * 1.2), csize)
-  end
+  graph.render()
 end
 
 function love.mousepressed(x, y, m)
-  local clickedDropdown = false
-  for i,v in ipairs(dropdowns) do
-    local h = love.graphics.getFont():getHeight() + margin
-    if openDropdown == 0 then
-      if x > v.x and x < v.x + v.width and y > v.y and y < v.y + h + margin then
-        if m == 1 then
-          openDropdown = i
-          clickedDropdown = true
-          dropdownScroll = 0
-          dropdownScrollE = 0
-        elseif m == 3 then
-          dropdowns[i].selected = math.random(1, #dropdowns[i].options)
-          createDropdowns()
-        end
-      end
-    end
-    if openDropdown == i then
-      if x > v.x and x < v.x + v.width and y > v.y + h and y < v.y + h * (math.min(#v.options, maxDropdown) + 1) and m == 1 then
-        clickedDropdown = true
-      end
-    end
-  end
-  
-  if not clickedDropdown and m == 1 then
-    openDropdown = 0
-  end
+  if dropdown.mousepressed(x, y, m) then return end
 end
 
 function love.mousereleased(x, y, m)
-  for i,v in ipairs(dropdowns) do
-    local h = love.graphics.getFont():getHeight() + margin
-    if openDropdown == i then
-      if x > v.x and x < v.x + v.width and y > v.y + h and y < v.y + h * (math.min(#v.options, maxDropdown) + 1) and m == 1 then
-        v.selected = math.floor((y - v.y) / h - dropdownScrollE)
-        openDropdown = 0
-        dropdownValueCache[v.name] = {selected = v.selected}
-        createDropdowns()
-      end
-    end
-  end
+  if dropdown.mousereleased(x, y, m) then return end
 end
 
 function love.wheelmoved(x, y)
   if y == 0 then return end
-  
-  if openDropdown ~= 0 then
-    dropdownScroll = dropdownScroll + y
-  else
-    local mx, my = love.mouse.getPosition()
-    for i,v in ipairs(dropdowns) do
-      local h = love.graphics.getFont():getHeight() + margin
-      if mx > v.x and mx < v.x + v.width and my > v.y and my < v.y + h + margin then
-        dropdowns[i].selected = dropdowns[i].selected - math.floor(y)
-        dropdowns[i].selected = (dropdowns[i].selected - 1) % #dropdowns[i].options + 1
-        createDropdowns()
+
+  if dropdown.wheelmoved(x, y) then return end
+end
+
+function love.keypressed(key)
+  if key == 'f6' then -- print all globals
+    for k, v in pairs(_G) do
+      for _, g in ipairs(default_G) do
+        if g == k then goto continue end
       end
+      print(k, v)
+      ::continue::
     end
   end
-end
+end

util.lua

@@ -0,0 +1,3 @@
+function mix(x, y, a)
+  return x * (1 - a) + y * a
+end