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var LightControl = View.extend({
el: ".lightcontrol",
events: {
"mousedown": "stopPropagation",
"click .swatch": "clickSwatch",
"click label": "clickLabel",
"input #shadow-control": "updateShadow",
"mousedown #brightness-control": "beginBrightness",
"input #brightness-control": "updateBrightness",
"input #outline-hue": "updateShadow",
"input #wall-hue": "updateShadow",
},
initialize: function(){
this.colorPicker = new LabColorPicker(this, 180, 180)
this.$el.prepend( this.colorPicker.canvas )
this.$swatches = this.$(".swatch")
this.$labels = this.$(".swatch + label")
this.$swatch = {
wall: this.$("#wall-color"),
outline: this.$("#outline-color"),
floor: this.$("#floor-color"),
ceiling: this.$("#ceiling-color"),
}
this.$brightnessControl = this.$("#brightness-control")
},
modes: [ "wall", "outline", "floor", "ceiling" ],
load: function(data){
this.modes.forEach(function(mode){
Walls.setColor[mode](data[mode])
this.$swatch[ mode ].css("background-color", rgb_string(data[mode]))
}.bind(this))
this.setMode("wall")
},
loadDefaults: function(){
var colors = {
wall: app.defaults.colors.wall.slice(),
outline: app.defaults.colors.outline.slice(),
floor: app.defaults.colors.floor.slice(),
ceiling: app.defaults.colors.ceiling.slice(),
}
this.load(colors)
},
toggle: function(state){
this.$el.toggleClass("active", state);
},
show: function(){
this.toggle(true)
},
hide: function(){
this.toggle(false)
},
pick: function(rgb, Lab){
this.labColor = Lab
this.setSwatchColor(this.mode, rgb)
Walls.setColor[ this.mode ](rgb)
},
setSwatchColor: function(mode, rgb) {
this.$swatch[ mode ].css("background-color", rgb_string(rgb))
},
initialState: null,
begin: function(){
this.initialState = this.serialize()
},
serialize: function(){
return {
mode: this.mode,
rgb: Walls.colors[ this.mode ]
}
},
finalize: function(){
if (! this.initialState) { return }
UndoStack.push({
type: 'update-colors',
undo: this.initialState,
redo: this.serialize(),
})
this.initialState = null
// TODO: watch individual wall object here
Minotaur.watch( app.router.editorView.settings )
},
setMode: function (mode) {
var color, brightness
this.mode = mode
this.$swatches.removeClass("selected")
this.$labels.removeClass("selected")
this.$swatch[ mode ].addClass("selected")
color = Walls.colors[ mode ]
this.$(".swatch.selected").next("label").addClass("selected")
this.labColor = this.colorPicker.load(color)
this.$brightnessControl.val( this.labColor[0] )
},
clickLabel: function(e){
$(e.currentTarget).prev(".swatch").trigger("click")
},
clickSwatch: function(e){
var mode = $(e.currentTarget).data('mode')
this.setMode(mode)
},
beginBrightness: function(){
this.begin()
$(window).one("mouseup", this.finalize.bind(this))
},
updateBrightness: function(){
this.labColor[0] = parseFloat( this.$brightnessControl.val() )
var rgb = this.colorPicker.setLab( this.labColor )
this.pick(rgb, this.labColor)
},
})
var LabColorPicker = function (parent, w, h) {
var base = this
var canvas = this.canvas = document.createElement('canvas')
var ctx = this.ctx = canvas.getContext('2d')
var imageData = ctx.createImageData(w,h)
var data = imageData.data
// var cursor = this.cursor = document.createElement("div")
// cursor.className = "colorPickerCursor"
canvas.width = w
canvas.height = h
canvas.className = "colorPicker"
var ww = w-1
var hh = h-1
var L_range = [0, 110]
var a_range = [-86.185, 98.254]
var b_range = [-107.863, 94.482]
var rgb = [0,0,0]
var val = 80
this.mouse = new mouse({
el: canvas,
down: function(e, cursor){
parent.begin()
cursor.x.a = -cursor.x.a
base.pick(cursor.x.a, cursor.y.a)
},
drag: function(e, cursor){
cursor.x.b = -cursor.x.b
base.pick(cursor.x.b, cursor.y.b)
},
up: function(){
parent.finalize()
}
})
this.setLab = function(Lab) {
val = Lab[0]
this.paint()
var rgb = xyz2rgb(hunterlab2xyz(Lab[0], Lab[1], Lab[2])).map(Math.round)
return rgb
}
this.pick = function(i, j){
var x = mix( i/ww, a_range[0], a_range[1] )
var y = mix( j/hh, b_range[0], b_range[1] )
var rgb = xyz2rgb(hunterlab2xyz(val, x, y)).map(Math.round)
parent.pick( rgb, [val,x,y] )
}
this.load = function(rgba){
var Lab = xyz2hunterlab(rgb2xyz(rgba))
var val = clamp( Lab[0], L_range[0], L_range[1] )
var x = mix( norm(Lab[1], a_range[0], a_range[1]), 0, ww )
var y = mix( norm(Lab[2], b_range[0], b_range[1]), 0, hh )
// move the cursor
this.setLab(Lab)
return Lab
}
this.paint = function() {
val = clamp(val, L_range[0], L_range[1])
var x, y, t
for (var i = 0; i < w; i++) {
for (var j = 0; j < h; j++) {
x = mix( i/ww, a_range[0], a_range[1] )
y = mix( j/hh, b_range[0], b_range[1] )
t = (j*w + i) * 4
rgb = xyz2rgb(hunterlab2xyz(val, x, y))
data[t] = Math.round( rgb[0] )
data[t+1] = Math.round( rgb[1] )
data[t+2] = Math.round( rgb[2] )
data[t+3] = 255
}
}
ctx.putImageData(imageData,0,0)
}
function hunterlab2xyz (L,a,b) {
var_Y = L / 10
var_X = a / 17.5 * L / 10
var_Z = b / 7 * L / 10
Y = Math.pow(var_Y, 2)
X = ( var_X + Y ) / 1.02
Z = -( var_Z - Y ) / 0.847
xyz = [X,Y,Z]
}
function xyz2rgb(){
var var_X = xyz[0] / 100 //X from 0 to 95.047 (Observer = 2°, Illuminant = D65)
var var_Y = xyz[1] / 100 //Y from 0 to 100.000
var var_Z = xyz[2] / 100 //Z from 0 to 108.883
var_R = var_X * 3.2406 + var_Y * -1.5372 + var_Z * -0.4986
var_G = var_X * -0.9689 + var_Y * 1.8758 + var_Z * 0.0415
var_B = var_X * 0.0557 + var_Y * -0.2040 + var_Z * 1.0570
if ( var_R > 0.0031308 ) var_R = 1.055 * Math.pow( var_R, 1 / 2.4 ) - 0.055
else var_R = 12.92 * var_R
if ( var_G > 0.0031308 ) var_G = 1.055 * Math.pow( var_G, 1 / 2.4 ) - 0.055
else var_G = 12.92 * var_G
if ( var_B > 0.0031308 ) var_B = 1.055 * Math.pow( var_B, 1 / 2.4 ) - 0.055
else var_B = 12.92 * var_B
rgb[0] = clamp(var_R * 255, 0, 255)
rgb[1] = clamp(var_G * 255, 0, 255)
rgb[2] = clamp(var_B * 255, 0, 255)
return rgb
}
function rgb2xyz(RGB){
var var_R = ( RGB[0] / 255 ) // R from 0 to 255
var var_G = ( RGB[1] / 255 ) // G from 0 to 255
var var_B = ( RGB[2] / 255 ) // B from 0 to 255
if ( var_R > 0.04045 ) var_R = ( ( var_R + 0.055 ) / 1.055 ) ^ 2.4
else var_R = var_R / 12.92
if ( var_G > 0.04045 ) var_G = ( ( var_G + 0.055 ) / 1.055 ) ^ 2.4
else var_G = var_G / 12.92
if ( var_B > 0.04045 ) var_B = ( ( var_B + 0.055 ) / 1.055 ) ^ 2.4
else var_B = var_B / 12.92
var_R = var_R * 100
var_G = var_G * 100
var_B = var_B * 100
//Observer. = 2°, Illuminant = D65
var x = var_R * 0.4124 + var_G * 0.3576 + var_B * 0.1805
var y = var_R * 0.2126 + var_G * 0.7152 + var_B * 0.0722
var z = var_R * 0.0193 + var_G * 0.1192 + var_B * 0.9505
return [x,y,z]
}
function xyz2hunterlab (XYZ) {
var X = XYZ[0]
var Y = XYZ[1] || 1e-6 // otherwise divide-by-zero error when converting rgb(0,0,0)
var Z = XYZ[2]
var L = 10 * sqrt( Y )
var a = 17.5 * ( ( ( 1.02 * X ) - Y ) / sqrt( Y ) )
var b = 7 * ( ( Y - ( 0.847 * Z ) ) / sqrt( Y ) )
return [L,a,b]
}
}
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