add basic node types

1 files changed, 47 insertions, 0 deletions

diff --git a/demo/Node.lua b/demo/Node.lua
new file mode 100644
index 0000000..46c372a
--- /dev/null
+++ b/demo/Node.lua
@@ -0,0 +1,47 @@
+local Vector = require('Vector')
+local Matrix = require('Matrix')
+
+local Node = {}
+
+Node.prototype = {}
+Node.prototype.updateTransform = function(self)
+   honey.cglm.mat4.identity(self.transform.array)
+
+   self.transform:scale(self.scale)
+
+   self.transform:rotate(Vector.Vec3.ZERO, Vector.Vec3.Z_UNIT, self.rotation:at(2))
+   self.transform:rotate(Vector.Vec3.ZERO, Vector.Vec3.Y_UNIT, self.rotation:at(1))
+   self.transform:rotate(Vector.Vec3.ZERO, Vector.Vec3.X_UNIT, self.rotation:at(0))
+
+   self.transform:translate(self.position)
+
+   if parent ~= nil then
+      self.transform:mul(self.parent.transform)
+   end
+end
+
+-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Node.mt = {}
+Node.mt.__index = Node.prototype
+
+-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Node.new = function(parent, position, rotation, scale)
+   local node = {}
+
+   setmetatable(node, Node.mt)
+
+   node.parent = parent
+
+   node.position = position
+   node.rotation = rotation
+   node.scale = scale
+   
+   node.transform = Matrix.Mat4.eye()
+   node:updateTransform()
+
+   return node
+end
+
+return Node