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tools/editortool/map/camera.py

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+import math
+from OpenGL.GL import *
+from OpenGL.GLU import *
+from dusk.defs import defs
+
+pixelsPerUnit = float(defs.get('RPG_CAMERA_PIXELS_PER_UNIT'))
+yOffset = float(defs.get('RPG_CAMERA_Z_OFFSET'))
+fov = float(defs.get('RPG_CAMERA_FOV'))
+scale = 8.0
+
+def setupCamera(vw, vh):
+  z = (vh / 2.0) / (
+    (pixelsPerUnit * scale) * math.tan(math.radians(fov / 2.0))
+  )
+  lookAt = ( 0, 0, 0 )
+  aspectRatio = vw / vh
+  position = lookAt[0], lookAt[1] - yOffset, lookAt[2] + z
+
+  glMatrixMode(GL_PROJECTION)
+  glLoadIdentity()
+  gluPerspective(fov, aspectRatio, 0.1, 1000.0)
+  glMatrixMode(GL_MODELVIEW)
+  glLoadIdentity()
+  gluLookAt(
+    position[0], position[1], position[2],
+    lookAt[0], lookAt[1], lookAt[2],
+    0.0, 1.0, 0.0
+  )