# settings
-width = 500
-height = 500
+width = 800
+height = 600
+supply_height = 96
-# globals
-$svg = null # jquery object for svg element
-svg = null # dom object for svg element
-selection = null
-svg_ns = 'http://www.w3.org/2000/svg'
-mouse = [0,0]
+# json (compiled to javascript and minified) is ~8% smaller than the resulting xml
+json_to_svg = (json) ->
+ for tag, attrs of json
+ el = document.createElementNS 'http://www.w3.org/2000/svg', tag
+ for k, v of attrs
+ if k is 'children'
+ for child in v
+ el.appendChild json_to_svg child
+ else
+ el.setAttribute k, v
+ return el
-update_path = (path, data, flags) ->
- d = ''
- for loc, i in data
- if i is 0
- d += 'M '
- else
- d += ' L '
- d += "#{loc[0]} #{loc[1]}"
- if flags?.to_mouse?
- d += "L #{mouse[0]} #{mouse[1]}"
- if flags?.close?
- d += " z"
- path.setAttribute "d", d
-
-stop_drawing = ->
- if selection?
- update_path selection.element, selection.data
- selection = null
- return false
-stop_close_drawing = ->
- if selection?
- update_path selection.element, selection.data, close: true
- selection = null
- return false
-click = (x, y) ->
- unless selection?
- path = document.createElementNS svg_ns, "path"
- selection = data: [], element: path
- svg.appendChild path
- selection.data.push [x, y]
- update_path selection.element, selection.data
-mousemove = (x, y) ->
- mouse[0] = x
- mouse[1] = y
- if selection?
- update_path selection.element, selection.data, to_mouse: true
-
-keydown = (keycode) ->
- switch keycode
- when 'O'.charCodeAt 0
- return stop_close_drawing()
- when (' '.charCodeAt 0), 13, 10, 27
- return stop_drawing()
+# public vars: x, y, width, height, el
+class Widget
+ constructor: (args) ->
+ @x = args?.x ? 1
+ @y = args?.y ? 1
+ @width = args?.width ? 50
+ @height = args?.height ? 34
+ move: (args) ->
+ @x = args.x
+ @y = args.y
+class RectWidget extends Widget
+ constructor: (args) ->
+ super args
+ @el = json_to_svg rect:
+ x: @x + 1
+ y: @x + 1
+ width: @width - 2
+ height: @height - 2
+ class: 'box'
+ style: 'filter: url(#crayon)'
+ move: (args) ->
+ super args
+ @el.setAttribute 'x', @x + 1
+ @el.setAttribute 'y', @y + 1
+ clone: ->
+ return new RectWidget @
# called automatically on domcontentloaded
init = ->
+ offset = null
+ selected = []
+ on_canvas = []
+ dragging = false
$container = $ '.crayon_mockup'
- $stop_button = $ '<span class="button">stop drawing</span>'
- $stop_close_button = $ '<span class="button">stop drawing, close loop</span>'
- $tools = $ '<div class="toolbar"></div>'
- $tools.append $stop_button
- $tools.append $stop_close_button
- $stop_button.click stop_drawing
- $stop_close_button.click stop_close_drawing
- $container.append $tools
- svg = document.createElementNS svg_ns, 'svg'
- svg.setAttribute 'width', width
- svg.setAttribute 'height', height
- svg.setAttribute 'viewBox', "0 0 #{width} #{height}"
+ svg = json_to_svg svg: width: width, height: height, viewBox: "0 0 #{width} #{height}"
$svg = $ svg
$container.append $svg
+ svg.appendChild json_to_svg filter:
+ id: 'crayon', filterUnits: 'userSpaceOnUse'
+ x: '-5%', y: '-5%', height: '110%', width: '110%'
+ children: [
+ { feTurbulence: baseFrequency: '.3', numOctaves: '2', type: 'fractalNoise' }
+ { feDisplacementMap: scale: '6', xChannelSelector: 'R', in: 'SourceGraphic' }
+ ]
+
+ # create canvas border
+ svg.appendChild json_to_svg rect:
+ x: 1
+ y: supply_height + 1
+ width: width - 2
+ height: height - 2 - supply_height
+ class: 'canvas_border'
+
+ supply = [
+ new RectWidget()
+ new RectWidget width: 12, height: 50
+ new RectWidget width: 70, height: 12
+ ]
+ for widget, i in supply
+ widget.move {
+ x: 30 + i * 90 + (70 - widget.width) / 2
+ y: (supply_height - widget.height) / 2
+ }
+ svg.appendChild widget.el
+
+ # todo ask widgets
+ closest_widget = (widgets, xy) ->
+ closest = [10000, null]
+ for w in widgets
+ x = w.x + w.width / 2 - xy.x
+ y = w.y + w.height / 2 - xy.y
+ dist2 = x * x + y * y
+ if dist2 < closest[0]
+ closest = [dist2, w]
+ if closest[1]?
+ return closest
+ return null
+ svg_event_to_xy = (e) ->
+ unless offset?
+ offset = $svg.offset()
+ return {
+ x: Math.round(e.pageX - offset.left)
+ y: Math.round(e.pageY - offset.top)
+ }
$svg.mousedown (e) ->
- offset = $svg.offset()
- click e.pageX - offset.left, e.pageY - offset.top
+ xy = svg_event_to_xy e
+ if xy.y < supply_height
+ closest = closest_widget supply, xy
+ console.log closest
+ if closest?
+ closest[1] = closest[1].clone()
+ svg.appendChild closest[1].el
+ else
+ closest = closest_widget on_canvas, xy
+ if closest?
+ selected = [closest[1]]
+ dragging = true
+ mousemove e
+ return false
+ $svg.mouseup (e) ->
+ mousemove e
+ dragging = false
+ if selected[0]?
+ if selected[0].y > supply_height
+ on_canvas.push selected[0]
+ else
+ svg.removeChild selected[0].el
+ selected = []
+ return false
+ mousemove = (e) ->
+ if dragging
+ xy = svg_event_to_xy e
+ xy.x -= selected[0].width / 2
+ xy.y -= selected[0].height / 2
+ selected[0].move xy
return false
- $svg.mousemove (e) ->
- offset = $svg.offset()
- mousemove e.pageX - offset.left, e.pageY - offset.top
- ($ document).keydown (e) ->
- return keydown e.keyCode
+ $svg.mousemove mousemove
+ #($ document).keydown (e) ->
$ init
Got questions, comments, patches, etc.? Contact Jason Woofenden