parameterized eases
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20830b96f2
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14
dropdown.lua
14
dropdown.lua
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@ -66,6 +66,13 @@ function self.createDropdowns()
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name = 'mode'
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})
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local param1 = {}
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local param2 = {}
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param1[1] = slider.kvalue('param11') or 1
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param1[2] = slider.kvalue('param12') or 1
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param2[1] = slider.kvalue('param21') or 1
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param2[2] = slider.kvalue('param22') or 1
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if d[dropdownId].selected == 1 then -- preview ease
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insertDropdown(d, {
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x = outerpadding + dropdownWidth + padding,
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@ -74,7 +81,10 @@ function self.createDropdowns()
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options = skeys(ease.eases),
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name = 'ease1'
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})
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ease.ease = ease.eases[d[dropdownId].options[d[dropdownId].selected]].f
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local _e = ease.eases[d[dropdownId].options[d[dropdownId].selected]].f
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ease.ease = function(x)
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return _e(x, param1[1], param1[2])
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end
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elseif d[dropdownId].selected == 2 then -- mix eases
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insertDropdown(d, {
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x = outerpadding + dropdownWidth + padding,
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@ -90,7 +100,7 @@ function self.createDropdowns()
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options = skeys(ease.eases),
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name = 'ease2'
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})
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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)
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ease.ease = ease.mixEase(ease.eases[d[dropdownId - 1].options[d[dropdownId - 1].selected]].f, ease.eases[d[dropdownId].options[d[dropdownId].selected]].f, slider.kvalue('mix'), param1, param2)
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elseif d[dropdownId].selected == 3 then -- create eases
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insertDropdown(d, {
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x = outerpadding + dropdownWidth + padding,
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22
ease.lua
22
ease.lua
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@ -2,14 +2,14 @@ local self = {}
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local easelib = require 'easelib'
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function self.mixEase(e1, e2, point)
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function self.mixEase(e1, e2, point, param1, param2)
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if not point then point = 0.5 end
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return function(a)
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if a < point then
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return e1(a / point) * point
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return e1(a / point, param1[1], param1[2]) * point
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else
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return e2((a - point) / (1 - point)) * (1 - point) + point
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return e2((a - point) / (1 - point), param2[1], param2[2]) * (1 - point) + point
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end
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end
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end
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@ -17,18 +17,26 @@ end
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self.eases = {}
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for i,v in pairs(easelib) do
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local min = 0
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local params = {}
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for i = 3, #v do
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if v[i] then
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table.insert(params, {min = v[i][1], max = v[i][2], default = v[i][3], name = v[i][4]})
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end
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end
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local q = 10
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for i = 0, q do
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local s = v[2](i / q)
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if s < 0 then min = -1 end
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local s = v[2](i / q, (params[1] or {}).default, (params[2] or {}).default)
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if s < 0 and not v.overridemin then min = -1 end
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end
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self.eases[v[1]] = {
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f = v[2],
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max = 1,
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min = min,
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i = i
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i = i,
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params = params
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}
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end
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12
easelib.lua
12
easelib.lua
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@ -129,4 +129,16 @@ table.insert(self, {'inOutBounce', function(t)
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end
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end})
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table.insert(self, {'inElastic', function(t, a, p)
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return 1 - self.outElastic(1 - t, a, p)
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end, {1, 4, 1, 'a'}, {0, 1, 0.3, 'p'}, overridemin = true})
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table.insert(self, {'outElastic', function(t, a, p)
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return a * pow(2, -10 * t) * sin((t - p / (2 * pi) * asin(1/a)) * 2 * pi / p) + 1
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end, {1, 4, 1, 'a'}, {0, 1, 0.3, 'p'}, overridemin = true})
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table.insert(self, {'inOutElastic', function(t, a, p)
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return t < 0.5
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and 0.5 * self.inElastic(t * 2, a, p)
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or 0.5 + 0.5 * self.outElastic(t * 2 - 1, a, p)
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end, {1, 4, 1, 'a'}, {0, 1, 0.3, 'p'}, overridemin = true})
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return self
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@ -21,6 +21,9 @@ function self.update(dt)
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b = b / 2 + 0.5
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end
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graph[i] = mix(v, b, math.min(dt * 18, 1))
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if graph[i] ~= graph[i] then -- is nan
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graph[i] = b
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end
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end
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self.touchtimer = mix(self.touchtimer, 0, dt * 2)
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2
main.lua
2
main.lua
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@ -21,7 +21,7 @@ require 'util' -- exports into global table
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padding = 14
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outerpadding = 22
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margin = 6
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dropdownWidth = 106
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dropdownWidth = 128
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fontHeight = love.graphics.getFont():getHeight()
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-- global for convinience's sake
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60
slider.lua
60
slider.lua
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@ -19,7 +19,7 @@ function self.kget(key)
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end
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function self.kvalue(key)
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return self.kget(key).oldvalue
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return self.kget(key) and self.kget(key).oldvalue
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end
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local sliderId
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@ -38,7 +38,7 @@ function self.createSliders()
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if mode == 2 then -- mix eases
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insertSlider(s, {
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x = outerpadding,
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y = outerpadding + fontHeight + padding,
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y = outerpadding + fontHeight * 2.5 + padding,
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width = dropdownWidth,
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min = 0,
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max = 1,
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@ -48,12 +48,51 @@ function self.createSliders()
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})
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end
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local ease1 = ease.eases[dropdown.kselected('ease1')]
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local ease2 = ease.eases[dropdown.kselected('ease2')]
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local param1 = ease1 and ease1.params
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local param2 = ease2 and ease2.params
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if param1 then
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for i,v in ipairs(param1) do
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insertSlider(s, {
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x = outerpadding + dropdownWidth + padding,
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y = outerpadding + (fontHeight * 2.5 + padding) * i,
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width = dropdownWidth,
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min = v.min,
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max = v.max,
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default = v.default,
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name = 'param1' .. i,
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displayname = 'Parameter ' .. v.name
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})
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end
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end
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if param2 then
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for i,v in ipairs(param2) do
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insertSlider(s, {
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x = outerpadding + dropdownWidth + padding + dropdownWidth + padding,
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y = outerpadding + (fontHeight * 2.5 + padding) * i,
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width = dropdownWidth,
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min = v.min,
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max = v.max,
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default = v.default,
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name = 'param2' .. i,
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displayname = 'Parameter ' .. v.name
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})
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end
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end
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sliders = s
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end
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local function normalize(a, min, max)
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return (a - min) / (max - min)
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end
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function self.update(dt)
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for i, v in ipairs(sliders) do
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v.spintimer = mix(v.spintimer + math.abs(v.value - v.oldvalue), 0, math.min(dt * 8))
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v.spintimer = mix(v.spintimer + math.abs(normalize(v.value, v.min, v.max) - normalize(v.oldvalue, v.min, v.max)), 0, math.min(dt * 8))
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v.oldvalue = mix(v.oldvalue, v.value, math.min(dt * 20, 1))
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if v.spintimer > 2 then
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@ -74,13 +113,16 @@ function self.render()
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love.graphics.setColor(0.7, 0.7, 0.7, 0.4)
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love.graphics.line(x, y + h/2, x + w, y + h/2)
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local sx, sy = x + w * v.oldvalue, y + h/2
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local normalvalue = normalize(v.value, v.min, v.max)
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local normaloldvalue = normalize(v.oldvalue, v.min, v.max)
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local sx, sy = x + w * normaloldvalue, y + h/2
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local ssize = h * 0.5
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love.graphics.push()
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love.graphics.translate(sx, sy)
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love.graphics.rotate((v.value - v.oldvalue) * 4 + v.spin * math.pi * 2)
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love.graphics.rotate((normalvalue - normaloldvalue) * 4 + v.spin * math.pi * 2)
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local hovering = mx > sx - ssize/2 and mx < sx + ssize/2 and my > sy - ssize/2 and my < sy + ssize/2 and dropdown.openDropdown == 0
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local dragging = mx > x and mx < x + w and my > y and my < y + h and love.mouse.isDown(1) and dropdown.openDropdown == 0
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@ -93,18 +135,18 @@ function self.render()
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love.graphics.setColor(1, 1, 1, 1)
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love.graphics.rectangle('line', -ssize/2, -ssize/2, ssize, ssize)
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love.graphics.rotate((v.value - v.oldvalue) * -2)
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love.graphics.rotate((normalvalue - normaloldvalue) * -2)
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love.graphics.setColor(1, 1, 1, 1)
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love.graphics.printf(math.floor(v.value * 100)/100, -ssize * 6, ssize - 2, ssize * 12, 'center')
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love.graphics.pop()
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love.graphics.printf(v.displayname, v.x + margin * 2 - ssize * 6, v.y - 5, ssize * 12, 'center')
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love.graphics.printf(v.displayname, v.x + margin * 2 - ssize * 6, v.y - 8, ssize * 12, 'center')
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if dragging then
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v.value = (mx - x) / w
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graph.touchtimer = 1
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v.value = ((mx - x) / w) * (v.max - v.min) + v.min
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if v.name == 'mix' then graph.touchtimer = 1 end -- sorry !!!
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createUI()
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end
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end
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