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(ns dactyl-cave.key
(:use [scad-clj.scad])
(:use [scad-clj.model])
(:use [unicode-math.core]))
(def tw 13.969999999999999) ;; Top width
(def smh 0.98044) ;; Side margin height
(def pw 0.8128) ;; Peg width
(def ph 3.5001199999999995) ;; Peg height
(def pgh 5.00888) ;; Peg gap height
(def keyswitch-height (+ smh ph pgh ph smh))
(def keyswitch-width (+ pw tw pw))
(def plate-height 254/45)
(defn- flip-path [points] (map (partial map -) points))
(def keyswitch-plate-hole-shape
(polygon [[0.8128 0] [0.8128 0.98044] [0.0 0.98044] [0.0 4.48056] [0.8128 4.48056] [0.8128 9.48944] [0.0 9.48944] [0.0 12.98956] [0.8128 12.98956] [0.8128 13.969999999999999] [14.7828 13.969999999999999] [14.7828 12.98956] [15.5956 12.98956] [15.5956 9.48944] [14.7828 9.48944] [14.7828 4.48056] [15.5956 4.48056] [15.5956 0.98044] [14.7828 0.98044] [14.7828 0]]))
(def keyswitch-plate-hole
(->> keyswitch-plate-hole-shape
(extrude-linear {:height plate-height :twist 0 :convexity 0})
(translate (map #(/ (- %) 2) [keyswitch-width keyswitch-height 0]))
(translate [0 0 1])))
(def hole-height 127/18)
(def pillar-width (+ keyswitch-width 127/45))
(def pillar-height (+ hole-height (/ plate-height 2)))
(def pillar-depth (+ keyswitch-height 127/30))
(def keyswitch-full-hole
(->>
(union
keyswitch-plate-hole
(->> (cube (/ ph 2) pillar-depth (* plate-height 2))
(translate [(* tw -1/4) 0 0]))
(->> (cube (/ ph 2) pillar-depth (* plate-height 2))
(translate [(* tw 1/4) 0 0]))
(translate
[0 0 (/ hole-height -2)]
(cube keyswitch-width
keyswitch-height
hole-height)))
(translate [0 0 hole-height])))
(def keyswitch-bottom-hole
(->>
(union
keyswitch-plate-hole
(->> (cube (/ ph 2) (/ pillar-depth 2) (* plate-height 2))
(translate [(* tw -1/4) (/ pillar-depth -2) 0]))
(->> (cube (/ ph 2) (/ pillar-depth 2) (* plate-height 2))
(translate [(* tw 1/4) (/ pillar-depth -2) 0]))
(translate
[0 0 (/ hole-height -2)]
(cube keyswitch-width
keyswitch-height
hole-height)))
(translate [0 0 hole-height])))
(def full-pillar
(->> (cube pillar-width pillar-depth
pillar-height)
(translate [0 0 (/ pillar-height 2)])))
(def pillar
(difference
full-pillar
keyswitch-full-hole))
(def key-height 127/10)
(def pillar-with-fake-key
(union pillar
(->> (cube (+ -0 pillar-width) (+ -0 pillar-depth) key-height)
(translate [0 0 (+ (/ key-height 2) pillar-height 127/450)]))))
(def full-height (+ pillar-height key-height 127/450))
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