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MX.Grid = MX.Object3D.extend({
init: function (ops) {
this.type = "Grid"
var ops = this.ops = defaults(ops, {
x: 0,
y: 0,
z: 0,
space: 20,
cells: 20,
})
ops.side = ops.space * ops.cells
var ctx, canvas = document.createElement("canvas")
this.el = canvas
this.width = this.height = canvas.width = canvas.height = ops.side + 4
ctx = canvas.getContext('2d')
this.x = ops.x || 0
this.y = ops.y || 0
this.z = ops.z || 0
this.rotationX = PI/2
this.scale = ops.scale || 1
this.backface = ops.backface || false
ops.className && this.el.classList.add(ops.className)
this.backface && this.el.classList.add("backface-visible")
this.el.classList.add("mx-grid")
this.draw(ctx)
},
draw: function(ctx, recenter){
ctx = ctx || this.ctx
if (recenter) {
ctx.save()
ctx.translate( -grid.width/2, -grid.height/2 )
}
var cells = this.ops.cells,
space = this.ops.space,
side = this.ops.side
ctx.strokeStyle = "#444"
ctx.lineWidth = 1
ctx.beginPath()
ctx.translate(1,1)
for (var i = 0; i <= cells; i++) {
ctx.moveTo(i*space, 0)
ctx.lineTo(i*space, side)
ctx.moveTo(0, i*space)
ctx.lineTo(side, i*space)
}
ctx.closePath()
ctx.stroke()
if (recenter) {
ctx.restore()
}
},
})
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