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(library (box2d-lite contact)

  (export make-contact

is-contact
import-contact

contact-position
contact-normal
contact-r1
contact-r2
contact-separation
contact-pn
contact-pt
contact-pnb
contact-mass-normal
contact-mass-tangent
contact-bias
contact-feature

contact-position-set!
contact-normal-set!
contact-r1-set!
contact-r2-set!
contact-separation-set!
contact-pn-set!
contact-pt-set!
contact-pnb-set!
contact-mass-normal-set!
contact-mass-tangent-set!
contact-bias-set!
contact-feature-set!

create-contact)

  (import (rnrs)
(box2d-lite util define-record-type)
(box2d-lite vec)
(box2d-lite edges))

  ;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

  (define-record-type++ contact
    is-contact
    import-contact
    (fields (mutable position)
(mutable normal)
(mutable r1)
(mutable r2)
(mutable separation)
(mutable pn)
(mutable pt)
(mutable pnb)
(mutable mass-normal)
(mutable mass-tangent)
(mutable bias)
(mutable feature))
    (methods))

  ;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

  (define (create-contact)
    (make-contact (make-vec 0 0)
(make-vec 0 0)
(make-vec 0 0)
(make-vec 0 0)
0 0.0 0.0 0.0 0 0 0
                  (create-edges)))

  ;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

  )
    
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