Implemented the first version of the 3D engine. Added support for loading 'obj' files as a mesh.

engine.py

@@ -0,0 +1,46 @@
+from vectors import Vector2d, Vector3d, Vector4d
+from matrix import Matrix3x3
+
+class Engine:
+	def __init__(self, width, height):
+		self._width = width
+		self._height = height
+		
+	@property
+	def width(self):
+		return self._width
+	
+	@width.setter
+	def width(self, width):
+		raise ValueError("Not allowed")
+		
+class Mesh:
+	def __init__(self):
+		self.triangles = []
+		self.vertices = []
+		
+	def load_obj_file(self, path):
+		lines = []
+		
+		with open(path, 'r') as reader:
+			lines = reader.readlines()
+		
+		for line in lines:
+			if line[0] == 'v':
+				tmp = line.split(' ')
+				x = float(tmp[1])
+				y = float(tmp[2])
+				z = float(tmp[3])
+				self.vertices.append(Vector3d(x, y, z))
+				
+			if line[0] == 'f':
+				tmp = line.split(' ')
+				
+				# Subtract one because the obj file isn't zero indexed.				
+				row0 = self.vertices[int(tmp[1]) - 1]
+				row1 = self.vertices[int(tmp[2]) - 1]
+				row2 = self.vertices[int(tmp[3]) - 1]
+				
+				tri = Matrix3x3(row0, row1, row2)
+
+				self.triangles.append(tri)#Vector3d(x - 1, y - 1, z - 1))