--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/bGrease/renderer/camera.py	Mon Sep 05 15:00:34 2011 +0200
@@ -0,0 +1,39 @@
+import pyglet
+
+class Camera(object):
+	"""Sets the point of view for further renderers by altering the
+	model/view matrix when it is drawn. It does not actually perform
+	any drawing itself.
+
+	:param position: The position vector for the camera. Sets the center of the view.
+	:type position: Vec2d
+	:param angle: Camera rotation in degrees about the z-axis.
+	:type angle: float
+	:param zoom: Scaling vector for the coordinate axis.
+	:type zoom: Vec2d
+	:param relative: Flag to indicate if the camera settings are relative 
+		to the previous view state. If ``False`` the view state is reset before 
+		setting the camera view by loading the identity model/view matrix.
+	
+	At runtime the camera may be manipulated via attributes with the 
+	same names and functions as the parameters above.
+	"""
+
+	def __init__(self, position=None, angle=None, zoom=None, relative=False):
+		self.position = position
+		self.angle = angle
+		self.zoom = zoom
+		self.relative = relative
+	
+	def draw(self, gl=pyglet.gl):
+		if not self.relative:
+			gl.glLoadIdentity()
+		if self.position is not None:
+			px, py = self.position
+			gl.glTranslatef(px, py, 0)
+		if self.angle is not None:
+			gl.glRotatef(self.angle, 0, 0, 1)
+		if self.zoom is not None:
+			sx, sy = self.zoom
+			gl.glScalef(sx, sy ,0)
+