1 files changed, 70 insertions, 0 deletions
diff --git a/public/assets/javascripts/mx/primitives/mx.grid.js b/public/assets/javascripts/mx/primitives/mx.grid.js
new file mode 100644
index 0000000..a765c89
--- /dev/null
+++ b/public/assets/javascripts/mx/primitives/mx.grid.js
@@ -0,0 +1,70 @@
+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()
+    }
+
+  },
+
+})
+
+