toki/idris2-render
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Fix rendering bugs

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This commit is contained in:
Kiana Sheibani 2022-12-01 08:43:57 -05:00
parent 68a401fa1d
commit 2628b42a54
Signed by: toki
GPG key ID: 6CB106C25E86A9F7
2 changed files with 5 additions and 4 deletions
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6
src/Render/Camera.idr
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@ -24,5 +24,7 @@ PictureType cam = Array [cam.pixh, cam.pixw, 3] Double
export
pointToPix : Camera -> Point 2 Double -> Point 2 Integer
pointToPix (MkCamera mat sw sh pw ph) p =
let p' = applyInv mat p
in point [cast (p'.x / sw * cast pw), cast (p'.y / sh * cast ph)]
let pw' = cast pw
ph' = cast ph
p' = applyInv mat p
in point [cast (p'.x / sw * pw' + pw' / 2), cast (p'.y / sh * ph' + ph' / 2)]

3
src/Render/Scene.idr
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@ -28,7 +28,7 @@ render cam sc = joinAxes $ foldl drawObject (repeat _ sc.bgcolor) sc.objects
drawPixel (x, y, col) arr = fromMaybe arr $ do
x' <- integerToFin x _
y' <- integerToFin y _
pure $ indexUpdate [x',y'] (over col) arr
pure $ indexUpdate [y',x'] (over col) arr
drawObject : Array [cam.pixh, cam.pixw] Color -> Object -> Array [cam.pixh, cam.pixw] Color
drawObject pic (MkObject obj) =
@ -50,7 +50,6 @@ renderToPPM dest cam sc = do
setByte buf i (cast $ x * 255)
modifyIORef ind (+1)
_ <- if !(exists dest) then removeFile {io} dest else pure $ Right ()
Right h <- openFile dest Append
| Left err => pure $ Left err