From 06bd9c421456e483293f823e44167baeefe6db31 Mon Sep 17 00:00:00 2001
From: Stefan Dresselhaus <sdressel@techfak.uni-bielefeld.de>
Date: Mon, 21 Apr 2014 19:46:24 +0200
Subject: [PATCH] changed camera to new model

---
 src/Main.hs        | 16 ++++++----------
 src/Render/Misc.hs |  4 ++--
 src/Types.hs       |  3 ++-
 3 files changed, 10 insertions(+), 13 deletions(-)

diff --git a/src/Main.hs b/src/Main.hs
index 73279e8..469eae5 100644
--- a/src/Main.hs
+++ b/src/Main.hs
@@ -43,11 +43,12 @@ import           Graphics.GLUtil.BufferObjects        (offset0)
 import Graphics.Rendering.OpenGL.Raw.ARB.TessellationShader
 -- Our modules
 import           Map.Graphics
-import           Render.Misc                          (checkError, createFrustum, getCam, curb,
+import           Render.Misc                          (checkError, createFrustum, curb,
                                                        genColorData)
 import           Render.Render                        (initRendering,
                                                        initMapShader,
                                                        initHud)
+import           Render.Types
 import           UI.Callbacks
 import           Types
 import           Importer.IQM.Parser
@@ -146,10 +147,7 @@ main =
                         , _yAngle              = pi/2
                         , _zDist               = 10
                         , _frustum             = frust
-                        , _camPosition         = Types.Position
-                                       { Types.__x    = 25
-                                       , Types.__y    = 25
-                                       }
+                        , _camObject           = createFlatCam 25 25
                         }
               , _io                  = IOState
                         { _clock               = now
@@ -209,8 +207,7 @@ draw = do
         numVert  = state ^. gl.glMap.mapVert
         map'     = state ^. gl.glMap.stateMap
         frust    = state ^. camera.frustum
-        camX     = state ^. camera.camPosition._x
-        camY     = state ^. camera.camPosition._y
+        camPos   = state ^. camera.camObject
         zDist'   = state ^. camera.zDist
         tessFac  = state ^. gl.glMap.stateTessellationFactor
     when (state ^. ui . uiHasChanged) prepareGUI
@@ -264,7 +261,7 @@ draw = do
         checkError "copy projection"
 
         --set up camera
-        let ! cam = getCam (camX,camY) zDist' xa ya
+        let ! cam = getCam camPos zDist' xa ya
         with (distribute cam) $ \ptr ->
               glUniformMatrix4fv vmat 1 0 (castPtr (ptr :: Ptr (L.M44 CFloat)))
         checkError "copy cam"
@@ -387,8 +384,7 @@ run = do
                      - 0.2 * kyrot * mults
         mody y' = y' + 0.2 * kxrot * mults
                      - 0.2 * kyrot * multc
-    modify $ (camera.camPosition._x %~ modx)
-           . (camera.camPosition._y %~ mody)
+    modify $ camera.camObject %~ (\c -> moveBy c (\(x,y) -> (modx x,mody y)))
 
     {-
     --modify the state with all that happened in mt time.
diff --git a/src/Render/Misc.hs b/src/Render/Misc.hs
index 1c6f092..48e84f9 100644
--- a/src/Render/Misc.hs
+++ b/src/Render/Misc.hs
@@ -89,7 +89,7 @@ lookAt eye center up' =
                 y@(V3 yx yy yz) = normalize (cross z x)
 
 
-getCam :: (Double, Double) -- ^ Target in x/z-Plane
+{-getCam :: (Double, Double) -- ^ Target in x/z-Plane
           -> Double        -- ^ Distance from Target
           -> Double        -- ^ Angle around X-Axis (angle down/up)
           -> Double        -- ^ Angle around Y-Axis (angle left/right)
@@ -110,7 +110,7 @@ getCam (x',z') dist' xa' ya' = lookAt (cpos ^+^ at') at' up
                         z     = realToFrac z'
                         dist  = realToFrac dist'
                         xa    = realToFrac xa'
-                        ya    = realToFrac ya'
+                        ya    = realToFrac ya'-}
 
 curb :: Ord a => a -> a -> a -> a
 curb l h x
diff --git a/src/Types.hs b/src/Types.hs
index d7c1196..c22735b 100644
--- a/src/Types.hs
+++ b/src/Types.hs
@@ -10,6 +10,7 @@ import Linear.Matrix (M44)
 import Control.Monad.RWS.Strict (RWST)
 import Control.Lens
 import Graphics.Rendering.OpenGL.GL.Texturing.Objects (TextureObject)
+import Render.Types
 
 
 --Static Read-Only-State
@@ -41,7 +42,7 @@ data CameraState = CameraState
     , _yAngle              :: !Double
     , _zDist               :: !Double
     , _frustum             :: !(M44 CFloat)
-    , _camPosition         :: !Position --TODO: Get rid of cam-prefix
+    , _camObject           :: !Camera
     }
 
 data IOState = IOState