Added class Camera

d3/cameras/camera.py

@@ -0,0 +1,19 @@
+#!/usr/bin/env python3
+
+from ..conv.model import Vertex
+
+from OpenGL.GL import *
+from OpenGL.GLU import *
+
+
+class Camera:
+    def __init__(self, position = None, target = None, up = None):
+        self.position = Vertex() if position is None else position
+        self.target = Vertex() if target is None else target
+        self.up = Vertex(0.0,1.0,0.0) if up is None else target
+
+    def look(self):
+        gluLookAt(
+            self.position.x, self.position.y, self.position.z,
+            self.target.x, self.target.y, self.target.z,
+            self.up.x, self.up.y, self.up.z)

d3/controls/controls.py

@@ -57,4 +57,9 @@ class TrackBallControls(Controls):
         self.vertex = A
         self.vertex.normalize()
 
+class OrbitControls(Controls):
+    def __init__(self):
+        super().__init__()
+        self.phi = 0
+        self.theta = 0