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adjust spline wither framework/selection deletion
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@ -104,6 +104,7 @@ import Math.Bezier.Spline
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, Curve(..), Curves(..), PointType(..)
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, splitSplineAt
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, SplineTypeI(ssplineType)
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, CurrentStart(..), WitherResult(..)
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, KnownSplineType
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( lastPoint, adjustSplineType, biwitherSpline, ibitraverseSpline, bitraverseSpline )
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, fromNextPoint
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@ -584,15 +585,15 @@ deleteSelected doc =
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pure ( Just pt )
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updateSplineCurve
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:: forall clo'. SplineTypeI clo'
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:: forall clo' hasStart. SplineTypeI clo'
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=> Unique
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-> Maybe ( PointData brushParams )
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-> CurrentStart hasStart ( PointData brushParams )
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-> Curve clo' ( CachedStroke RealWorld ) ( PointData brushParams )
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-> State UpdateInfo
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( Maybe ( Curve clo' ( CachedStroke RealWorld ) ( PointData brushParams ) ) )
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updateSplineCurve uniq mbPrevPt crv =
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case crv of
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LineTo p1 dat ->
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( WitherResult hasStart clo' ( CachedStroke RealWorld ) ( PointData brushParams ) )
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updateSplineCurve uniq mbPrevPt crv = case crv of
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LineTo p1 _ ->
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case ssplineType @clo' of
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SOpen
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| NextPoint pt <- p1
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@ -602,13 +603,16 @@ deleteSelected doc =
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( over ( field' @"pathPointsAffected" ) ( <> 1 )
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. over ( field' @"strokesAffected" ) ( Set.insert uniq )
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)
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pure Nothing
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_ ->
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case mbPrevPt of
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Nothing ->
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pure ( Just $ LineTo p1 ( invalidateCache dat ) ) -- no need to update "strokesAffected"
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Just _ ->
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pure ( Just crv )
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pure Dismiss
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| NextPoint pt <- p1
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, NoStartFound <- mbPrevPt
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-> pure ( UseStartPoint pt Nothing ) -- no need to update "strokesAffected"
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SClosed
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| NoStartFound <- mbPrevPt
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-> pure Dismiss
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_ | CurrentStart _ <- mbPrevPt
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-> pure ( UseCurve crv )
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Bezier2To cp1 p2 dat ->
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case ssplineType @clo' of
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SOpen
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@ -620,17 +624,33 @@ deleteSelected doc =
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. over ( field' @"controlPointsAffected" ) ( <> 1 )
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. over ( field' @"strokesAffected" ) ( Set.insert uniq )
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)
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pure Nothing
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_ ->
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case mbPrevPt of
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Just _ | Normal <- view _selection cp1
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-> pure ( Just crv )
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pure Dismiss
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| NextPoint pt <- p2
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, NoStartFound <- mbPrevPt
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-> do
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modify'
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( over ( field' @"controlPointsAffected" ) ( <> 1 )
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. over ( field' @"strokesAffected" ) ( Set.insert uniq )
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)
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pure ( UseStartPoint pt Nothing )
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SClosed
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| NoStartFound <- mbPrevPt
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-> do
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modify'
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( over ( field' @"controlPointsAffected" ) ( <> 1 )
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. over ( field' @"strokesAffected" ) ( Set.insert uniq )
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)
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pure Dismiss
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_ | CurrentStart _ <- mbPrevPt
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-> case view _selection cp1 of
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Normal -> pure ( UseCurve crv )
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_ -> do
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modify'
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( over ( field' @"controlPointsAffected" ) ( <> 1 )
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. over ( field' @"strokesAffected" ) ( Set.insert uniq )
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)
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pure ( Just $ LineTo p2 ( invalidateCache dat ) )
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pure ( UseCurve ( LineTo p2 ( invalidateCache dat ) ) )
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Bezier3To cp1 cp2 p3 dat ->
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case ssplineType @clo' of
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SOpen
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@ -642,33 +662,45 @@ deleteSelected doc =
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. over ( field' @"controlPointsAffected" ) ( <> 2 )
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. over ( field' @"strokesAffected" ) ( Set.insert uniq )
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)
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pure Nothing
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_ ->
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case mbPrevPt of
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Just _
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| Normal <- view _selection cp1
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, Normal <- view _selection cp2
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-> pure ( Just crv )
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| Normal <- view _selection cp1
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pure Dismiss
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| NextPoint pt <- p3
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, NoStartFound <- mbPrevPt
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-> do
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modify'
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( over ( field' @"controlPointsAffected" ) ( <> 2 )
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. over ( field' @"strokesAffected" ) ( Set.insert uniq )
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)
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pure ( UseStartPoint pt Nothing )
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SClosed
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| NoStartFound <- mbPrevPt
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-> do
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modify'
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( over ( field' @"controlPointsAffected" ) ( <> 2 )
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. over ( field' @"strokesAffected" ) ( Set.insert uniq )
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)
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pure Dismiss
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_ | CurrentStart _ <- mbPrevPt
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-> case ( view _selection cp1, view _selection cp2 ) of
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( Normal, Normal ) ->
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pure ( UseCurve crv )
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( Normal, _ ) -> do
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modify'
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( over ( field' @"controlPointsAffected" ) ( <> 1 )
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. over ( field' @"strokesAffected" ) ( Set.insert uniq )
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)
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pure ( Just $ Bezier2To cp1 p3 ( invalidateCache dat ) )
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| Normal <- view _selection cp2
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-> do
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pure ( UseCurve $ Bezier2To cp1 p3 ( invalidateCache dat ) )
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( _, Normal ) -> do
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modify'
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( over ( field' @"controlPointsAffected" ) ( <> 1 )
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. over ( field' @"strokesAffected" ) ( Set.insert uniq )
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)
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pure ( Just $ Bezier2To cp2 p3 ( invalidateCache dat ) )
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pure ( UseCurve $ Bezier2To cp2 p3 ( invalidateCache dat ) )
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_ -> do
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modify'
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( over ( field' @"controlPointsAffected" ) ( <> 2 )
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. over ( field' @"strokesAffected" ) ( Set.insert uniq )
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)
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pure ( Just $ LineTo p3 ( invalidateCache dat ) )
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pure ( UseCurve $ LineTo p3 ( invalidateCache dat ) )
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-- | Perform a drag move action on a document.
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@ -56,7 +56,7 @@ import qualified Data.Sequence as Seq
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-- deepseq
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import Control.DeepSeq
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( NFData, NFData1 )
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( NFData(..), NFData1, deepseq )
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-- generic-lens
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import Data.Generics.Product.Fields
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@ -323,6 +323,38 @@ dropCurveEnd ( LineTo _ dat ) = LineTo BackToStart dat
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dropCurveEnd ( Bezier2To cp _ dat ) = Bezier2To cp BackToStart dat
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dropCurveEnd ( Bezier3To cp1 cp2 _ dat ) = Bezier3To cp1 cp2 BackToStart dat
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-- | A 'Maybe' value which keeps track of whether it is 'Nothing' or 'Just' with a type-level boolean.
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--
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-- This is used to enable writing 'biwitherSpline' with a dependent type signature,
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-- as the result type depends on whether a starting point has been found yet or not.
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data CurrentStart ( hasStart :: Bool ) ptData where
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NoStartFound :: CurrentStart False ptData
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CurrentStart :: !ptData -> CurrentStart True ptData
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deriving stock instance Show ptData => Show ( CurrentStart hasStart ptData )
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deriving stock instance Functor ( CurrentStart hasStart )
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deriving stock instance Foldable ( CurrentStart hasStart )
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deriving stock instance Traversable ( CurrentStart hasStart )
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instance NFData ptData => NFData ( CurrentStart hasStart ptData ) where
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rnf NoStartFound = ()
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rnf ( CurrentStart ptData ) = rnf ptData
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-- | The result of a wither operation on a spline.
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--
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-- - When a starting point has been found, we can choose whether to keep the current segment or not.
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-- - When a starting point has not yet been found, we first need to determine a new start point,
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-- before we can consider keeping or dismissing the curve.
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data WitherResult ( hasStart :: Bool ) ( clo' :: SplineType ) crvData' ptData' where
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Dismiss :: WitherResult hasStart clo' crvData' ptData'
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UseStartPoint :: ptData' -> Maybe ( Curve clo' crvData' ptData' ) -> WitherResult False clo' crvData' ptData'
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UseCurve :: Curve clo' crvData' ptData' -> WitherResult True clo' crvData' ptData'
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deriving stock instance ( Show ptData', Show crvData', SplineTypeI clo' ) => Show ( WitherResult hasStart clo' crvData' ptData' )
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instance ( NFData ptData', NFData crvData', SplineTypeI clo' ) => NFData ( WitherResult hasStart clo' crvData' ptData' ) where
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rnf Dismiss = ()
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rnf ( UseStartPoint ptData mbCurve ) = ptData `deepseq` mbCurve `deepseq` ()
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rnf ( UseCurve curve ) = rnf curve
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class SplineTypeI clo => KnownSplineType clo where
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type TraversalCt clo ( clo' :: SplineType ) :: Constraint
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@ -348,8 +380,8 @@ class SplineTypeI clo => KnownSplineType clo where
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biwitherSpline
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:: forall f crvData ptData crvData' ptData'
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. Monad f
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=> ( forall clo'. ( TraversalCt clo clo', SplineTypeI clo' )
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=> Maybe ptData' -> Curve clo' crvData ptData -> f ( Maybe ( Curve clo' crvData' ptData' ) )
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=> ( forall clo' hasStart. ( TraversalCt clo clo', SplineTypeI clo' )
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=> CurrentStart hasStart ptData' -> Curve clo' crvData ptData -> f ( WitherResult hasStart clo' crvData' ptData' )
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)
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-> ( ptData -> f ( Maybe ptData' ) )
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-> Spline clo crvData ptData
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@ -436,8 +468,8 @@ instance KnownSplineType Open where
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biwitherSpline
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:: forall f crvData ptData crvData' ptData'
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. Monad f
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=> ( forall clo'. ( clo' ~ Open, SplineTypeI clo' )
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=> Maybe ptData' -> Curve clo' crvData ptData -> f ( Maybe ( Curve clo' crvData' ptData' ) )
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=> ( forall clo' hasStart. ( clo' ~ Open, SplineTypeI clo' )
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=> CurrentStart hasStart ptData' -> Curve clo' crvData ptData -> f ( WitherResult hasStart clo' crvData' ptData' )
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)
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-> ( ptData -> f ( Maybe ptData' ) )
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-> Spline Open crvData ptData
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@ -452,15 +484,21 @@ instance KnownSplineType Open where
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where
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go :: Maybe ptData' -> Seq ( Curve Open crvData ptData ) -> StateT ( Maybe ( First ptData' ) ) f ( Seq ( Curve Open crvData' ptData' ) )
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go _ Empty = pure Empty
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go mbStart ( crv :<| crvs ) = do
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mbCrv' <- lift $ fc mbStart crv
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go Nothing ( crv :<| crvs ) = do
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mbCrv' <- lift $ fc NoStartFound crv
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case mbCrv' of
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Nothing -> go mbStart crvs
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Just crv' -> do
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let
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endpoint = openCurveEnd crv'
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modify' ( <> Just ( First endpoint ) )
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( crv' :<| ) <$> go ( Just endpoint ) crvs
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Dismiss -> go Nothing crvs
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UseStartPoint ptData'' mbCrv'' -> do
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modify' ( <> Just ( First ptData'' ) )
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case mbCrv'' of
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Nothing -> go ( Just ptData'' ) crvs
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Just crv'' -> ( crv'' :<| ) <$> go ( Just ptData'' ) crvs
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go ( Just ptData' ) ( crv :<| crvs ) = do
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mbCrv' <- lift $ fc ( CurrentStart ptData' ) crv
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case mbCrv' of
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Dismiss -> go ( Just ptData' ) crvs
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UseCurve crv'' ->
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( crv'' :<| ) <$> go ( Just $ openCurveEnd crv'' ) crvs
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instance KnownSplineType Closed where
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@ -502,23 +540,28 @@ instance KnownSplineType Closed where
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mbSpline' <- biwitherSpline fc fp ( Spline { splineStart, splineCurves = OpenCurves prevCurves } )
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case mbSpline' of
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Nothing -> do
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_ <- fc Nothing lastCurve
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pure Nothing
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mbCrv' <- fc NoStartFound lastCurve
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case mbCrv' of
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Dismiss -> pure Nothing
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UseStartPoint ptData'' mbCrv'' ->
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case mbCrv'' of
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Nothing -> pure $ Just ( Spline { splineStart = ptData'', splineCurves = NoCurves } )
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Just crv'' -> pure $ Just ( Spline { splineStart = ptData'', splineCurves = ClosedCurves Empty crv'' } )
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Just ( Spline { splineStart = start', splineCurves = OpenCurves prevCurves' } ) ->
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case prevCurves' of
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Empty -> do
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mbLastCurve' <- fc ( Just start' ) lastCurve
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mbLastCurve' <- fc ( CurrentStart start' ) lastCurve
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case mbLastCurve' of
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Nothing ->
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Dismiss ->
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pure ( Just $ Spline { splineStart = start', splineCurves = NoCurves } )
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Just lastCurve' ->
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UseCurve lastCurve' ->
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pure ( Just $ Spline { splineStart = start', splineCurves = ClosedCurves Empty lastCurve' } )
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( prevPrevCurves' :|> prevLastCurve' ) -> do
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let
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prevPt' = openCurveEnd prevLastCurve'
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mbLastCurve' <- fc ( Just prevPt' ) lastCurve
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mbLastCurve' <- fc ( CurrentStart prevPt' ) lastCurve
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case mbLastCurve' of
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Nothing ->
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Dismiss ->
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pure ( Just $ Spline { splineStart = start', splineCurves = ClosedCurves prevPrevCurves' ( dropCurveEnd prevLastCurve' ) } )
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Just lastCurve' ->
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UseCurve lastCurve' ->
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pure ( Just $ Spline { splineStart = start', splineCurves = ClosedCurves prevCurves' lastCurve' } )
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