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
 

modelviewer.py

@@ -16,6 +16,7 @@ from OpenGL.GLUT import *
 from d3.conv.loadmodel import load_model
 from d3.conv.model import Vertex
 from d3.controls.controls import TrackBallControls
+from d3.cameras.camera import Camera
 
 WINDOW_WIDTH = 1024
 WINDOW_HEIGHT = 768
@@ -25,15 +26,9 @@ y = 0.5
 width = 1
 height = 1
 
-def init_frame():
-
-    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
-    glMatrixMode(GL_MODELVIEW)
-    glLoadIdentity()
-    gluLookAt(0,0,5,0,0,0,0,1,0)
-
 def main(args):
 
+    camera = Camera(Vertex(0,0,5), Vertex(0,0,0))
     controls = TrackBallControls()
 
     pygame.init()
@@ -82,8 +77,12 @@ def main(args):
         # Update physics
         controls.update()
 
-        # Draw frame
-        init_frame()
+
+        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
+        glMatrixMode(GL_MODELVIEW)
+        glLoadIdentity()
+
+        camera.look()
 
         glPushMatrix()
         controls.apply()