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https://gitlab.com/sheaf/metabrush.git
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some optimisations
This commit is contained in:
sheaf
parent
4174d9b5b6
commit
8ac22b4738
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@ -90,10 +90,12 @@ common common
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ViewPatterns
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ghc-options:
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-O1
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-O2
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-fexpose-all-unfoldings
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-funfolding-use-threshold=16
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-- -funfolding-use-threshold=1000
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-fspecialise-aggressively
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-flate-dmd-anal
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-fmax-worker-args=200
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-optc-O3
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-Wall
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-Wcompat
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@ -102,7 +104,6 @@ common common
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-fwarn-incomplete-uni-patterns
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-fwarn-missing-deriving-strategies
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-fno-warn-unticked-promoted-constructors
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-rtsopts
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if flag(asserts)
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cpp-options:
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@ -57,7 +57,7 @@ import Control.Monad.Trans.State.Strict
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-- MetaBrush
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import Math.Algebra.Dual
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( fun )
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( D2𝔸1(..), fun )
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import qualified Math.Bezier.Cubic as Cubic
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( Bezier(..), fromQuadratic )
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import Math.Bezier.Cubic.Fit
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@ -79,6 +79,8 @@ import Math.Interval
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( Extent(Point) )
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import Math.Linear
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( ℝ(..), T(..) )
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import Math.Module
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( Module((*^)), normalise )
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import MetaBrush.Asset.Colours
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( Colours, ColourRecord(..) )
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import MetaBrush.Brush
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@ -648,22 +650,28 @@ drawFitPoint _ zoom ( FitTangent { fitPoint = ℝ2 x y, fitTangent = V2 tx ty }
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drawCusp :: Colours -> Double -> Cusp -> Cairo.Render ()
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drawCusp _ zoom
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( Cusp { cuspPathCoords = ℝ2 px py
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( Cusp { cuspPathCoords = D21 { _D21_v = ℝ2 px py
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, _D21_dx = tgt }
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, cuspStrokeCoords = ℝ2 cx cy } ) = do
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-- Draw a white circle on the path at the cusp point.
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-- Draw a line perpendicular to the underlying path at the cusp.
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let
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!( V2 tx ty ) = ( 6 / zoom ) *^ normalise tgt
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Cairo.save
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Cairo.translate px py
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Cairo.arc 0 0 ( 4 / zoom ) 0 ( 2 * pi )
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Cairo.setSourceRGBA 1.0 1.0 1.0 1.0
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Cairo.moveTo -ty tx
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Cairo.lineTo ty -tx
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--withRGBA path Cairo.setSourceRGBA
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Cairo.setSourceRGBA 0 0 0 0.75
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Cairo.setLineWidth ( 2 / zoom )
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Cairo.stroke
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Cairo.restore
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-- Draw a black circle on the outline at the cusp point.
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-- Draw a circle around the outline cusp point.
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Cairo.save
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Cairo.translate cx cy
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Cairo.arc 0 0 ( 4 / zoom ) 0 ( 2 * pi )
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Cairo.setSourceRGBA 0 0 0 1.0
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Cairo.setSourceRGBA 0 0 0 0.75
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Cairo.stroke
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Cairo.restore
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@ -1,9 +1,12 @@
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{-# LANGUAGE AllowAmbiguousTypes #-}
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{-# LANGUAGE OverloadedStrings #-}
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{-# LANGUAGE ScopedTypeVariables #-}
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{-# LANGUAGE TemplateHaskell #-}
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module MetaBrush.Asset.Brushes where
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module MetaBrush.Asset.Brushes
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( lookupBrush, brushes
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, CircleBrushFields, circle
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, EllipseBrushFields, ellipse
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) where
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-- base
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import Prelude
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@ -30,7 +33,7 @@ import qualified Data.HashMap.Strict as HashMap
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import Math.Algebra.Dual
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import Math.Bezier.Spline
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import Math.Interval
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( type I )
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import Math.Linear
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import Math.Module
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( Module((^+^), (*^)) )
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@ -65,6 +68,7 @@ circle = BrushData "circle" ( WithParams deflts circleBrush )
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where
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deflts :: Record CircleBrushFields
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deflts = MkR ( ℝ1 1 )
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{-# INLINE circle #-}
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type EllipseBrushFields = '[ "a", "b", "phi" ]
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ellipse :: Brush EllipseBrushFields
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@ -72,6 +76,7 @@ ellipse = BrushData "ellipse" ( WithParams deflts ellipseBrush )
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where
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deflts :: Record EllipseBrushFields
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deflts = MkR ( ℝ3 1 1 0 )
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{-# INLINE ellipse #-}
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--------------------------------------------------------------------------------
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-- Differentiable brushes.
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@ -91,6 +96,7 @@ circleSpline p = sequenceA $
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]
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lastCrv =
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Bezier3To ( p κ -1 ) ( p 1 -κ ) BackToStart ()
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{-# INLINE circleSpline #-}
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circleBrush :: forall i k irec
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. ( irec ~ I i ( Record CircleBrushFields )
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@ -120,23 +126,24 @@ circleBrush _ mkI =
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e_y = pure $ mkI $ ℝ2 0 1
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kon = konst @( I i Double ) @k @irec . mkI
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{-# INLINEABLE circleBrush #-}
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ellipseBrush :: forall i k irec
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. ( irec ~ I i ( Record EllipseBrushFields )
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, Module
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( D k irec ( I i Double ) )
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( D k irec ( I i ( ℝ 2 ) ) )
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, Module ( I i Double ) ( T ( I i Double ) )
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, HasChainRule ( I i Double ) k irec
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, Representable ( I i Double ) irec
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, Applicative ( D k irec )
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, Transcendental ( D k irec ( I i Double ) )
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-- TODO: make a synonym for the above...
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-- it seems DiffInterp isn't exactly right
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)
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=> Proxy# i
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-> ( forall a. a -> I i a )
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-> C k irec ( Spline 'Closed () ( I i ( ℝ 2 ) ) )
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. ( irec ~ I i ( Record EllipseBrushFields )
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, Module
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( D k irec ( I i Double ) )
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( D k irec ( I i ( ℝ 2 ) ) )
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, Module ( I i Double ) ( T ( I i Double ) )
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, HasChainRule ( I i Double ) k irec
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, Representable ( I i Double ) irec
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, Applicative ( D k irec )
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, Transcendental ( D k irec ( I i Double ) )
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-- TODO: make a synonym for the above...
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-- it seems DiffInterp isn't exactly right
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)
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=> Proxy# i
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-> ( forall a. a -> I i a )
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-> C k irec ( Spline 'Closed () ( I i ( ℝ 2 ) ) )
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ellipseBrush _ mkI =
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D \ params ->
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let a, b, phi :: D k irec ( I i Double )
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@ -154,3 +161,4 @@ ellipseBrush _ mkI =
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e_y = pure $ mkI $ ℝ2 0 1
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kon = konst @( I i Double ) @k @irec . mkI
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{-# INLINEABLE ellipseBrush #-}
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@ -37,6 +37,7 @@ import GHC.TypeNats
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-- MetaBrush
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import Math.Algebra.Dual.Internal
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import Math.Interval.Internal
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import Math.Linear
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import Math.Module
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import Math.Monomial
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@ -258,29 +259,33 @@ instance Ring r => Ring ( D2𝔸1 r ) where
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!dr1 * !dr2 =
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let
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o :: r
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o = fromInteger 0
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!o = fromInteger 0
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p :: r -> r -> r
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p = (+) @r
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!p = (+) @r
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m :: r -> r -> r
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m = (*) @r
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!m = (*) @r
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in
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$$( prodRuleQ
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[|| o ||] [|| p ||] [|| m ||]
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[|| dr1 ||] [|| dr2 ||] )
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{-# SPECIALISE instance Ring ( D2𝔸1 Double ) #-}
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{-# SPECIALISE instance Ring ( D2𝔸1 ( 𝕀 Double ) ) #-}
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instance Ring r => Ring ( D3𝔸1 r ) where
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!dr1 * !dr2 =
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let
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o :: r
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o = fromInteger 0
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!o = fromInteger 0
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p :: r -> r -> r
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p = (+) @r
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!p = (+) @r
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m :: r -> r -> r
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m = (*) @r
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!m = (*) @r
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in
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$$( prodRuleQ
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[|| o ||] [|| p ||] [|| m ||]
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[|| dr1 ||] [|| dr2 ||] )
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{-# SPECIALISE instance Ring ( D3𝔸1 Double ) #-}
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{-# SPECIALISE instance Ring ( D3𝔸1 ( 𝕀 Double ) ) #-}
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--instance Ring r => Ring ( D1𝔸2 r ) where
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-- !dr1 * !dr2 =
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@ -300,29 +305,33 @@ instance Ring r => Ring ( D2𝔸2 r ) where
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!dr1 * !dr2 =
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let
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o :: r
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o = fromInteger 0
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!o = fromInteger 0
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p :: r -> r -> r
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p = (+) @r
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!p = (+) @r
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m :: r -> r -> r
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m = (*) @r
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!m = (*) @r
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in
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$$( prodRuleQ
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[|| o ||] [|| p ||] [|| m ||]
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[|| dr1 ||] [|| dr2 ||] )
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{-# SPECIALISE instance Ring ( D2𝔸2 Double ) #-}
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{-# SPECIALISE instance Ring ( D2𝔸2 ( 𝕀 Double ) ) #-}
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instance Ring r => Ring ( D3𝔸2 r ) where
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!dr1 * !dr2 =
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let
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o :: r
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o = fromInteger 0
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!o = fromInteger 0
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p :: r -> r -> r
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p = (+) @r
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!p = (+) @r
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m :: r -> r -> r
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m = (*) @r
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!m = (*) @r
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in
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$$( prodRuleQ
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[|| o ||] [|| p ||] [|| m ||]
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[|| dr1 ||] [|| dr2 ||] )
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{-# SPECIALISE instance Ring ( D3𝔸2 Double ) #-}
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{-# SPECIALISE instance Ring ( D3𝔸2 ( 𝕀 Double ) ) #-}
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--instance Ring r => Ring ( D1𝔸3 r ) where
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-- !dr1 * !dr2 =
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@ -342,29 +351,33 @@ instance Ring r => Ring ( D2𝔸3 r ) where
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!dr1 * !dr2 =
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let
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o :: r
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o = fromInteger 0
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!o = fromInteger 0
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p :: r -> r -> r
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p = (+) @r
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!p = (+) @r
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m :: r -> r -> r
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m = (*) @r
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!m = (*) @r
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in
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$$( prodRuleQ
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[|| o ||] [|| p ||] [|| m ||]
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[|| dr1 ||] [|| dr2 ||] )
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{-# SPECIALISE instance Ring ( D2𝔸3 Double ) #-}
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{-# SPECIALISE instance Ring ( D2𝔸3 ( 𝕀 Double ) ) #-}
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instance Ring r => Ring ( D3𝔸3 r ) where
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!dr1 * !dr2 =
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let
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o :: r
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o = fromInteger 0
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!o = fromInteger 0
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p :: r -> r -> r
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p = (+) @r
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!p = (+) @r
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m :: r -> r -> r
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m = (*) @r
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!m = (*) @r
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in
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$$( prodRuleQ
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[|| o ||] [|| p ||] [|| m ||]
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[|| dr1 ||] [|| dr2 ||] )
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{-# SPECIALISE instance Ring ( D3𝔸3 Double ) #-}
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{-# SPECIALISE instance Ring ( D3𝔸3 ( 𝕀 Double ) ) #-}
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--instance Ring r => Ring ( D1𝔸4 r ) where
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-- !dr1 * !dr2 =
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@ -384,29 +397,33 @@ instance Ring r => Ring ( D2𝔸4 r ) where
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!dr1 * !dr2 =
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let
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o :: r
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o = fromInteger 0
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!o = fromInteger 0
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p :: r -> r -> r
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p = (+) @r
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!p = (+) @r
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m :: r -> r -> r
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m = (*) @r
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!m = (*) @r
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in
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$$( prodRuleQ
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[|| o ||] [|| p ||] [|| m ||]
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[|| dr1 ||] [|| dr2 ||] )
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{-# SPECIALISE instance Ring ( D2𝔸4 Double ) #-}
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{-# SPECIALISE instance Ring ( D2𝔸4 ( 𝕀 Double ) ) #-}
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instance Ring r => Ring ( D3𝔸4 r ) where
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!dr1 * !dr2 =
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let
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o :: r
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o = fromInteger 0
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!o = fromInteger 0
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p :: r -> r -> r
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p = (+) @r
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!p = (+) @r
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m :: r -> r -> r
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m = (*) @r
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!m = (*) @r
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in
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$$( prodRuleQ
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[|| o ||] [|| p ||] [|| m ||]
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[|| dr1 ||] [|| dr2 ||] )
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{-# SPECIALISE instance Ring ( D3𝔸4 Double ) #-}
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{-# SPECIALISE instance Ring ( D3𝔸4 ( 𝕀 Double ) ) #-}
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--------------------------------------------------------------------------------
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-- Field & transcendental instances
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|
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@ -21,6 +21,10 @@ import GHC.Generics
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import GHC.TypeNats
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( KnownNat )
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-- deepseq
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import Control.DeepSeq
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( NFData )
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-- template-haskell
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import Language.Haskell.TH
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( CodeQ )
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@ -50,6 +54,7 @@ import TH.Utils
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-- | \( \mathbb{Z} \).
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newtype D𝔸0 v = D0 { _D0_v :: v }
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deriving stock ( Show, Eq, Functor, Foldable, Traversable, Generic, Generic1 )
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deriving anyclass NFData
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deriving Applicative
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via Generically1 D𝔸0
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@ -59,6 +64,7 @@ data D1𝔸1 v =
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, _D11_dx :: !( T v )
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}
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deriving stock ( Show, Eq, Functor, Foldable, Traversable, Generic, Generic1 )
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deriving anyclass NFData
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deriving Applicative
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via Generically1 D1𝔸1
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@ -69,6 +75,7 @@ data D2𝔸1 v =
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, _D21_dxdx :: !( T v )
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}
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deriving stock ( Show, Eq, Functor, Foldable, Traversable, Generic, Generic1 )
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deriving anyclass NFData
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deriving Applicative
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via Generically1 D2𝔸1
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@ -89,6 +96,7 @@ data D1𝔸2 v =
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, _D12_dx, _D12_dy :: !( T v )
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}
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deriving stock ( Show, Eq, Functor, Foldable, Traversable, Generic, Generic1 )
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deriving anyclass NFData
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deriving Applicative
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via Generically1 D1𝔸2
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@ -110,6 +118,7 @@ data D3𝔸2 v =
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, _D32_dxdxdx, _D32_dxdxdy, _D32_dxdydy, _D32_dydydy :: !( T v )
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}
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deriving stock ( Show, Eq, Functor, Foldable, Traversable, Generic, Generic1 )
|
||||
deriving anyclass NFData
|
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deriving Applicative
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via Generically1 D3𝔸2
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|
||||
|
|
@ -119,6 +128,7 @@ data D1𝔸3 v =
|
|||
, _D13_dx, _D13_dy, _D13_dz :: !( T v )
|
||||
}
|
||||
deriving stock ( Show, Eq, Functor, Foldable, Traversable, Generic, Generic1 )
|
||||
deriving anyclass NFData
|
||||
deriving Applicative
|
||||
via Generically1 D1𝔸3
|
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|
||||
|
|
@ -129,6 +139,7 @@ data D2𝔸3 v =
|
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, _D23_dxdx, _D23_dxdy, _D23_dydy, _D23_dxdz, _D23_dydz, _D23_dzdz :: !( T v )
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}
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||||
deriving stock ( Show, Eq, Functor, Foldable, Traversable, Generic, Generic1 )
|
||||
deriving anyclass NFData
|
||||
deriving Applicative
|
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via Generically1 D2𝔸3
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|
||||
|
|
@ -141,6 +152,7 @@ data D3𝔸3 v =
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, _D33_dxdxdz, _D33_dxdydz, _D33_dxdzdz, _D33_dydydz, _D33_dydzdz, _D33_dzdzdz :: !( T v )
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}
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deriving stock ( Show, Eq, Functor, Foldable, Traversable, Generic, Generic1 )
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deriving anyclass NFData
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deriving Applicative
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via Generically1 D3𝔸3
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|
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|
|
@ -150,6 +162,7 @@ data D1𝔸4 v =
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, _D14_dx, _D14_dy, _D14_dz, _D14_dw :: !( T v )
|
||||
}
|
||||
deriving stock ( Show, Eq, Functor, Foldable, Traversable, Generic, Generic1 )
|
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deriving anyclass NFData
|
||||
deriving Applicative
|
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via Generically1 D1𝔸4
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|
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|
|
@ -161,6 +174,7 @@ data D2𝔸4 v =
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, _D24_dydz, _D24_dzdz, _D24_dxdw, _D24_dydw, _D24_dzdw, _D24_dwdw :: !( T v )
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}
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||||
deriving stock ( Show, Eq, Functor, Foldable, Traversable, Generic, Generic1 )
|
||||
deriving anyclass NFData
|
||||
deriving Applicative
|
||||
via Generically1 D2𝔸4
|
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|
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|
|
@ -176,6 +190,7 @@ data D3𝔸4 v =
|
|||
_D34_dxdwdw, _D34_dydwdw, _D34_dzdwdw, _D34_dwdwdw :: !( T v )
|
||||
}
|
||||
deriving stock ( Show, Eq, Functor, Foldable, Traversable, Generic, Generic1 )
|
||||
deriving anyclass NFData
|
||||
deriving Applicative
|
||||
via Generically1 D3𝔸4
|
||||
|
||||
|
|
|
|||
|
|
@ -74,7 +74,7 @@ import Math.Epsilon
|
|||
import Math.Linear.Solve
|
||||
( linearSolve )
|
||||
import Math.Module
|
||||
( Module((*^), (^-^))
|
||||
( Module((*^), (^-^)), lerp
|
||||
, Inner((^.^)), quadrance
|
||||
)
|
||||
import Math.Roots
|
||||
|
|
@ -82,6 +82,8 @@ import Math.Roots
|
|||
import Math.Linear
|
||||
( Mat22(..), ℝ(..), T(..) )
|
||||
|
||||
import Debug.Utils
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
|
||||
-- | Parameters to the curve fitting algorithm.
|
||||
|
|
@ -121,37 +123,40 @@ data FitPoint
|
|||
fitSpline
|
||||
:: FitParameters
|
||||
-> ( ℝ 1 -> ( ℝ 2, T ( ℝ 2 ) ) ) -- ^ curve \( t \mapsto ( C(t), C'(t) ) \) to fit
|
||||
-> ( ℝ 1, ℝ 1 ) -- ^ interval \( [t_min, t_max] \)
|
||||
-> ( SplinePts Open, Seq FitPoint )
|
||||
fitSpline ( FitParameters {..} ) = go 0
|
||||
fitSpline ( FitParameters {..} ) curveFn = go 0
|
||||
where
|
||||
dt :: Double
|
||||
dt = recip ( fromIntegral nbSegments )
|
||||
go
|
||||
:: Int
|
||||
-> ( ℝ 1 -> ( ℝ 2, T ( ℝ 2 ) ) )
|
||||
-> ( ℝ 1, ℝ 1 )
|
||||
-> ( SplinePts Open, Seq FitPoint )
|
||||
go subdiv curveFn =
|
||||
go subdiv (t_min, t_max) =
|
||||
let
|
||||
p, r :: ℝ 2
|
||||
tp, tr :: T ( ℝ 2 )
|
||||
qs :: [ ℝ 2 ]
|
||||
(p, tp) = curveFn $ ℝ1 0
|
||||
(r, tr) = curveFn $ ℝ1 1
|
||||
qs = [ fst $ curveFn ( ℝ1 $ dt * fromIntegral j ) | j <- [ 1 .. nbSegments - 1 ] ]
|
||||
(p, tp) = curveFn $ T ( ℝ1 0.0001 ) • t_min
|
||||
(r, tr) = curveFn $ T ( ℝ1 -0.0001 ) • t_max
|
||||
qs = [ fst $ curveFn ( lerp @( T ( ℝ 1 ) ) ( dt * fromIntegral j ) t_min t_max )
|
||||
| j <- [ 1 .. nbSegments - 1 ] ]
|
||||
in
|
||||
case fitPiece dist_tol t_tol maxIters p tp qs r tr of
|
||||
( bez, Max ( Arg max_sq_error t_split ) )
|
||||
( bez, Max ( Arg max_sq_error t_split_0 ) )
|
||||
| subdiv >= maxSubdiv
|
||||
|| max_sq_error <= dist_tol ^ ( 2 :: Int )
|
||||
-> ( openCubicBezierCurveSpline () bez, ( FitTangent p tp :<| Seq.fromList ( map FitPoint qs ) ) :|> FitTangent r tr )
|
||||
-> trace ( unlines [ "fitSpline: piece is OK", "t_min = " ++ show t_min, "start = " ++ show p, "start tgt = " ++ show tp, "t_max = " ++ show t_max, "end = " ++ show r, "end tgt = " ++ show tr ] )
|
||||
$ ( openCubicBezierCurveSpline () bez, ( FitTangent p tp :<| Seq.fromList ( map FitPoint qs ) ) :|> FitTangent r tr )
|
||||
| let
|
||||
t_split_eff :: Double
|
||||
t_split_eff = min ( 1 - dt ) $ max dt t_split
|
||||
t_split :: ℝ 1
|
||||
t_split = ℝ1 $ min ( 1 - dt ) $ max dt t_split_0
|
||||
c1, c2 :: SplinePts Open
|
||||
ps1, ps2 :: Seq FitPoint
|
||||
( ( c1, ps1 ), ( c2, ps2 ) )
|
||||
= ( go ( subdiv + 1 ) ( \ ( ℝ1 t ) -> curveFn $ ℝ1 $ t * t_split_eff )
|
||||
, go ( subdiv + 1 ) ( \ ( ℝ1 t ) -> curveFn $ ℝ1 $ t_split_eff + t * ( 1 - t_split_eff ) )
|
||||
= ( go ( subdiv + 1 ) (t_min , t_split)
|
||||
, go ( subdiv + 1 ) (t_split, t_max )
|
||||
) `Parallel.Strategy.using`
|
||||
( Parallel.Strategy.parTuple2 Parallel.Strategy.rdeepseq Parallel.Strategy.rdeepseq )
|
||||
-> ( c1 <> c2, ps1 <> ps2 )
|
||||
|
|
|
|||
|
|
@ -18,8 +18,6 @@ module Math.Bezier.Stroke
|
|||
where
|
||||
|
||||
-- base
|
||||
import Prelude
|
||||
hiding ( unzip )
|
||||
import Control.Arrow
|
||||
( first, (***) )
|
||||
import Control.Applicative
|
||||
|
|
@ -37,11 +35,15 @@ import Data.Foldable
|
|||
import Data.Functor.Identity
|
||||
( Identity(..) )
|
||||
import Data.List
|
||||
( nub, partition )
|
||||
( nub, partition, sort )
|
||||
import Data.List.NonEmpty
|
||||
( unzip )
|
||||
( NonEmpty )
|
||||
import qualified Data.List.NonEmpty as NE
|
||||
( cons, singleton, unzip )
|
||||
import Data.Maybe
|
||||
( fromMaybe, isJust, listToMaybe, mapMaybe )
|
||||
import Data.Semigroup
|
||||
( sconcat )
|
||||
import GHC.Exts
|
||||
( newMutVar#, runRW#
|
||||
, Proxy#, proxy#
|
||||
|
|
@ -211,8 +213,8 @@ data Cusp
|
|||
= Cusp
|
||||
{ cuspParameters :: !( ℝ 2 )
|
||||
-- ^ @(t,s)@ parameter values of the cusp
|
||||
, cuspPathCoords :: !( ℝ 2 )
|
||||
-- ^ path point coordinates
|
||||
, cuspPathCoords :: !( D 2 ( ℝ 1 ) ( ℝ 2 ) )
|
||||
-- ^ path point coordinates and tangent
|
||||
, cuspStrokeCoords :: !( ℝ 2 )
|
||||
-- ^ brush stroke point coordinates
|
||||
}
|
||||
|
|
@ -417,14 +419,19 @@ computeStrokeOutline fitParams ptParams toBrushParams brushFn spline@( Spline {
|
|||
-- No cached fit: compute the fit anew.
|
||||
Nothing -> do
|
||||
let
|
||||
-- Split up the path at the cusps
|
||||
cusps :: [ Cusp ]
|
||||
cusps = outlineDefiniteCusps fwdBwd
|
||||
++ outlinePotentialCusps fwdBwd
|
||||
-- SLD TODO: here!!!
|
||||
intervals :: NonEmpty ( ℝ 1, ℝ 1 )
|
||||
intervals = splitInterval ( ℝ1 0, ℝ1 1 )
|
||||
$ sort [ ℝ1 t | Cusp { cuspParameters = ℝ2 t _ } <- cusps ]
|
||||
|
||||
fwdData, bwdData :: ( SplinePts Open, Seq FitPoint )
|
||||
( fwdData, bwdData ) =
|
||||
( fitSpline fitParams ( fst . outlineFn fwdBwd )
|
||||
, fitSpline fitParams ( snd . outlineFn fwdBwd ) )
|
||||
( sconcat $ fmap ( fitSpline fitParams ( fst . outlineFn fwdBwd ) ) intervals
|
||||
, sconcat $ fmap ( fitSpline fitParams ( snd . outlineFn fwdBwd ) ) intervals )
|
||||
-- TODO: use foldMap1 once that's in base.
|
||||
`Strats.using`
|
||||
( Strats.parTuple2 Strats.rdeepseq Strats.rdeepseq )
|
||||
outlineData :: OutlineData
|
||||
|
|
@ -564,7 +571,8 @@ outlineFunction ptParams toBrushParams brushFromParams = \ sp0 crv ->
|
|||
path :: C ( ExtentOrder 'Point ) ( ℝ 1 ) ( ℝ 2 )
|
||||
( path, usedParams ) = pathAndUsedParams @Point id
|
||||
|
||||
curves :: ℝ 1 -> Seq ( ℝ 1 -> StrokeDatum Point )
|
||||
curves :: ℝ 1 -- t
|
||||
-> Seq ( ℝ 1 {- s -} -> StrokeDatum Point )
|
||||
curves =
|
||||
brushStrokeData @Point @( ExtentOrder 'Point ) @brushParams
|
||||
path
|
||||
|
|
@ -574,7 +582,8 @@ outlineFunction ptParams toBrushParams brushFromParams = \ sp0 crv ->
|
|||
)
|
||||
( brushFromParams @Point proxy# id )
|
||||
|
||||
curvesI :: 𝕀ℝ 1 -> Seq ( 𝕀ℝ 1 -> StrokeDatum 'Interval )
|
||||
curvesI :: 𝕀ℝ 1 -- t
|
||||
-> Seq ( 𝕀ℝ 1 {- s -} -> StrokeDatum 'Interval )
|
||||
curvesI = brushStrokeData @'Interval @( ExtentOrder 'Interval ) @brushParams
|
||||
pathI
|
||||
( chainRule @( 𝕀 Double ) @( ExtentOrder 'Interval )
|
||||
|
|
@ -602,7 +611,7 @@ outlineFunction ptParams toBrushParams brushFromParams = \ sp0 crv ->
|
|||
$ runD ( brushFromParams @Point proxy# id )
|
||||
$ toBrushParams params_t
|
||||
|
||||
--( newtDunno, newtSols ) = intervalNewtonGS InverseMidJacobian 0.0001 curvesI
|
||||
( newtDunno, newtSols ) = intervalNewtonGS InverseMidJacobian 0.0001 curvesI
|
||||
|
||||
in --trace
|
||||
-- ( unlines $
|
||||
|
|
@ -617,8 +626,8 @@ outlineFunction ptParams toBrushParams brushFromParams = \ sp0 crv ->
|
|||
-- ) $
|
||||
OutlineInfo
|
||||
{ outlineFn = fwdBwd
|
||||
, outlineDefiniteCusps = [] -- map ( cuspCoords curves ) newtSols
|
||||
, outlinePotentialCusps = [] -- map ( cuspCoords curves ) newtDunno
|
||||
, outlineDefiniteCusps = map ( cuspCoords curves ) newtSols
|
||||
, outlinePotentialCusps = map ( cuspCoords curves ) newtDunno
|
||||
}
|
||||
{-# INLINEABLE outlineFunction #-}
|
||||
|
||||
|
|
@ -640,6 +649,20 @@ lastTangent ( Spline { splineCurves = NoCurves } ) = Nothing
|
|||
lastTangent ( Spline { splineStart, splineCurves = ClosedCurves Empty lst } ) = Just $ endTangent splineStart splineStart lst
|
||||
lastTangent ( Spline { splineStart, splineCurves = ClosedCurves ( _ :|> prev ) lst } ) = Just $ endTangent splineStart ( openCurveEnd prev ) lst
|
||||
|
||||
-- | Split up the given interval at the list of points provided.
|
||||
--
|
||||
-- Assumes the list is sorted.
|
||||
splitInterval :: Ord a => ( a, a ) -> [ a ] -> NonEmpty ( a, a )
|
||||
splitInterval ( start, end ) []
|
||||
= NE.singleton ( start, end )
|
||||
splitInterval ( start, end ) ( split : splits )
|
||||
| split >= end
|
||||
= NE.singleton ( start, end )
|
||||
| split <= start
|
||||
= splitInterval ( start, end ) splits
|
||||
| otherwise
|
||||
= NE.cons ( start, split ) $ splitInterval ( split, end ) splits
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
|
||||
-- | Compute the join at a point of discontinuity of the tangent vector direction (G1 discontinuity).
|
||||
|
|
@ -668,7 +691,7 @@ joinBetweenOffsets
|
|||
= let
|
||||
pcs, lastAndRest :: Maybe ( SplinePts Open )
|
||||
( pcs, lastAndRest )
|
||||
= unzip
|
||||
= NE.unzip
|
||||
$ ( discardCurveData *** discardCurveData )
|
||||
. splitSplineAt ( i2 - i1 )
|
||||
<$> dropCurves i1 openSpline
|
||||
|
|
@ -1049,6 +1072,7 @@ newtype ZipSeq a = ZipSeq { getZipSeq :: Seq a }
|
|||
instance Applicative ZipSeq where
|
||||
pure _ = error "only use Applicative ZipSeq with non-empty Traversable functors"
|
||||
liftA2 f ( ZipSeq xs ) ( ZipSeq ys ) = ZipSeq ( Seq.zipWith f xs ys )
|
||||
{-# INLINE liftA2 #-}
|
||||
|
||||
brushStrokeData :: forall i k brushParams arr
|
||||
. ( k ~ ExtentOrder i, CurveOrder k, arr ~ C k
|
||||
|
|
@ -1181,12 +1205,12 @@ cuspCoords :: ( ℝ 1 -> Seq ( ℝ 1 -> StrokeDatum 'Point ) )
|
|||
-> Cusp
|
||||
cuspCoords eqs ( 𝕀 ( ℝ1 t_lo ) ( ℝ1 t_hi ), i, 𝕀 ( ℝ1 s_lo ) ( ℝ1 s_hi ) )
|
||||
| StrokeDatum
|
||||
{ dpath = D21 { _D21_v = path }
|
||||
{ dpath
|
||||
, dstroke = D22 { _D22_v = stroke } }
|
||||
<- ( eqs ( ℝ1 t_mid ) `Seq.index` i ) ( ℝ1 s_mid )
|
||||
= Cusp
|
||||
{ cuspParameters = ℝ2 t_mid s_mid
|
||||
, cuspPathCoords = path
|
||||
, cuspPathCoords = dpath
|
||||
, cuspStrokeCoords = stroke
|
||||
}
|
||||
where
|
||||
|
|
|
|||
|
|
@ -9,7 +9,8 @@ module Math.Module
|
|||
( Module(..), lerp
|
||||
, Inner(..), Cross(..)
|
||||
, Interpolatable
|
||||
, norm, squaredNorm, quadrance, distance
|
||||
, norm, squaredNorm, normalise
|
||||
, quadrance, distance
|
||||
, proj, projC, closestPointOnSegment
|
||||
, strictlyParallel, convexCombination
|
||||
|
||||
|
|
@ -73,6 +74,9 @@ norm = sqrt . squaredNorm
|
|||
squaredNorm :: forall m r. Inner r m => m -> r
|
||||
squaredNorm v = v ^.^ v
|
||||
|
||||
normalise :: ( Floating r, Inner r m ) => m -> m
|
||||
normalise v = recip ( norm v ) *^ v
|
||||
|
||||
-- | Squared distance between two points.
|
||||
quadrance :: forall v r p. ( Inner r v, Torsor v p ) => p -> p -> r
|
||||
quadrance p1 p2 = squaredNorm ( p1 --> p2 :: v )
|
||||
|
|
|
|||
Loading…
Reference in a new issue