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phong shading is minimally wrong - perhaps due to still incorrect precomputed vertex-normals

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This commit is contained in:
Nicole Dresselhaus 2014-12-04 01:04:32 +01:00
parent 8502861b17
commit 66f728f2ba
1 changed files with 4 additions and 3 deletions
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7
src/Scene/Renderer.hs
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@ -205,9 +205,10 @@ intersect r@(Ray ro rd) m@(M (Mesh s _ v f vn fn b)) = case catMaybes . elems $
det2 = det2v ^. _x >= 0 && det2v ^. _y >= 0
&& det2v ^. _x + det2v ^. _y <= 1
vns = normalize $
(0.5 - sqrt ((sqr (det2v ^. _x) + sqr (det2v ^. _y))/2)) *^ (vnorm IM.! w1)
+ ((det2v ^. _y)/2) *^ (vnorm IM.! w2)
+ ((det2v ^. _x)/2) *^ (vnorm IM.! w3)
--(0.5 - sqrt ((sqr (det2v ^. _x) + sqr (det2v ^. _y))/2)) *^ (vnorm IM.! w1)
(1 - det2v ^. _x - det2v ^. _y) *^ (vnorm IM.! w1)
+ ((det2v ^. _x)/2) *^ (vnorm IM.! w2)
+ ((det2v ^. _y)/2) *^ (vnorm IM.! w3)
sqr = \x -> x * x