152 lines
6.2 KiB
CoffeeScript
Executable File
152 lines
6.2 KiB
CoffeeScript
Executable File
# An ellipse in the whiteboard
|
|
class @WhiteboardEllipseModel extends WhiteboardToolModel
|
|
|
|
constructor: (@paper) ->
|
|
super @paper
|
|
|
|
# the defintion of this shape, kept so we can redraw the shape whenever needed
|
|
# format: top left x, top left y, bottom right x, bottom right y, stroke color, thickness
|
|
@definition = [0, 0, 0, 0, "#000", "0px"]
|
|
|
|
# Make an ellipse on the whiteboard
|
|
# @param {[type]} x the x value of the top left corner
|
|
# @param {[type]} y the y value of the top left corner
|
|
# @param {string} colour the colour of the object
|
|
# @param {number} thickness the thickness of the object's line(s)
|
|
make: (info) ->
|
|
console.log "Whiteboard - Making ellipse: "
|
|
console.log info
|
|
if info?.points?
|
|
x = info.points[0]
|
|
y = info.points[1]
|
|
color = info.color
|
|
thickness = info.thickness
|
|
|
|
@obj = @paper.ellipse(x * @gw + @xOffset, y * @gh + @yOffset, 0, 0)
|
|
@obj.attr "stroke", formatColor(color)
|
|
@obj.attr "stroke-width", zoomStroke(formatThickness(thickness))
|
|
@definition = [x, y, y, x, @obj.attrs["stroke"], @obj.attrs["stroke-width"]]
|
|
|
|
@obj
|
|
|
|
# Update ellipse drawn
|
|
# @param {number} x1 the x value of the top left corner in percent of current slide size
|
|
# @param {number} y1 the y value of the top left corner in percent of current slide size
|
|
# @param {number} x2 the x value of the bottom right corner in percent of current slide size
|
|
# @param {number} y2 the y value of the bottom right corner in percent of current slide size
|
|
# @param {boolean} square (draw a circle or not
|
|
update: (info) ->
|
|
console.log info
|
|
if info?.points?
|
|
x1 = info.points[0]
|
|
y1 = info.points[1]
|
|
x2 = info.points[2]
|
|
y2 = info.points[3]
|
|
|
|
circle = info.square
|
|
|
|
if @obj?
|
|
[x1, x2] = [x2, x1] if x2 < x1
|
|
|
|
if y2 < y1
|
|
[y1, y2] = [y2, y1]
|
|
reversed = true
|
|
|
|
#if the control key is pressed then the width and height of the ellipse are equal (a circle)
|
|
#we calculate this by making the y2 coord equal to the y1 coord plus the width of x2-x1 and corrected for the slide size
|
|
if circle
|
|
if reversed # if reveresed, the y1 coordinate gets updated, not the y2 coordinate
|
|
y1 = y2 - (x2 - x1) * @gw / @gh
|
|
else
|
|
y2 = y1 + (x2 - x1) * @gw / @gh
|
|
|
|
coords =
|
|
x1: x1
|
|
x2: x2
|
|
y1: y1
|
|
y2: y2
|
|
|
|
console.log(coords)
|
|
|
|
rx = (x2 - x1) / 2
|
|
ry = (y2 - y1) / 2
|
|
|
|
r =
|
|
rx: rx * @gw
|
|
ry: ry * @gh
|
|
cx: (rx + x1) * @gw + @xOffset
|
|
cy: (ry + y1) * @gh + @yOffset
|
|
|
|
@obj.attr(r)
|
|
|
|
console.log( "@gw: " + @gw + "\n@gh: " + @gh + "\n@xOffset: " + @xOffset + "\n@yOffset: " + @yOffset );
|
|
# we need to update all these values, specially for when shapes are drawn backwards
|
|
@definition[0] = x1
|
|
@definition[1] = y1
|
|
@definition[2] = x2
|
|
@definition[3] = y2
|
|
|
|
# Draw an ellipse on the whiteboard
|
|
# @param {number} x1 the x value of the top left corner
|
|
# @param {number} y1 the y value of the top left corner
|
|
# @param {number} x2 the x value of the bottom right corner
|
|
# @param {number} y2 the y value of the bottom right corner
|
|
# @param {string} colour the colour of the object
|
|
# @param {number} thickness the thickness of the object's line(s)
|
|
draw: (x1, y1, x2, y2, colour, thickness) ->
|
|
[x1, x2] = [x2, x1] if x2 < x1
|
|
[y1, y2] = [y2, y1] if y2 < y1
|
|
|
|
rx = (x2 - x1) / 2
|
|
ry = (y2 - y1) / 2
|
|
x = (rx + x1) * @gw + @xOffset
|
|
y = (ry + y1) * @gh + @yOffset
|
|
elip = @paper.ellipse(x, y, rx * @gw, ry * @gh)
|
|
elip.attr Utils.strokeAndThickness(colour, thickness)
|
|
elip
|
|
|
|
# When first starting drawing the ellipse
|
|
# @param {number} x the x value of cursor at the time in relation to the left side of the browser
|
|
# @param {number} y the y value of cursor at the time in relation to the top of the browser
|
|
# TODO: moved here but not finished
|
|
dragOnStart: (x, y) ->
|
|
# sx = (@paperWidth - @gw) / 2
|
|
# sy = (@paperHeight - @gh) / 2
|
|
# # find the x and y values in relation to the whiteboard
|
|
# @ellipseX = (x - @containerOffsetLeft - sx + @xOffset)
|
|
# @ellipseY = (y - @containerOffsetTop - sy + @yOffset)
|
|
# globals.connection.emitMakeShape "ellipse",
|
|
# [ @ellipseX / @paperWidth, @ellipseY / @paperHeight, @currentColour, @currentThickness ]
|
|
|
|
# When first starting to draw an ellipse
|
|
# @param {number} dx the difference in the x value at the start as opposed to the x value now
|
|
# @param {number} dy the difference in the y value at the start as opposed to the y value now
|
|
# @param {number} x the x value of cursor at the time in relation to the left side of the browser
|
|
# @param {number} y the y value of cursor at the time in relation to the top of the browser
|
|
# @param {Event} e the mouse event
|
|
# TODO: moved here but not finished
|
|
dragOnMove: (dx, dy, x, y, e) ->
|
|
# # if shift is pressed, draw a circle instead of ellipse
|
|
# dy = dx if @shiftPressed
|
|
# dx = dx / 2
|
|
# dy = dy / 2
|
|
# # adjust for negative values as well
|
|
# x = @ellipseX + dx
|
|
# y = @ellipseY + dy
|
|
# dx = (if dx < 0 then -dx else dx)
|
|
# dy = (if dy < 0 then -dy else dy)
|
|
# globals.connection.emitUpdateShape "ellipse",
|
|
# [ x / @paperWidth, y / @paperHeight, dx / @paperWidth, dy / @paperHeight ]
|
|
|
|
# When releasing the mouse after drawing the ellipse
|
|
# @param {Event} e the mouse event
|
|
# TODO: moved here but not finished
|
|
dragOnStop: (e) ->
|
|
# attrs = undefined
|
|
# attrs = @currentEllipse.attrs if @currentEllipse?
|
|
# if attrs?
|
|
# globals.connection.emitPublishShape "ellipse",
|
|
# [ attrs.cx / @gw, attrs.cy / @gh, attrs.rx / @gw, attrs.ry / @gh,
|
|
# @currentColour, @currentThickness ]
|
|
# @currentEllipse = null # late updates will be blocked by this
|