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Add many fixes to matrix operations.

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This commit is contained in:
Andrey Antukh 2016-12-25 20:49:34 +01:00
parent 0e91ae1ff7
commit 30df813edf
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GPG key ID: 4DFEBCB8316A8B95
1 changed files with 26 additions and 25 deletions
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51
frontend/src/uxbox/util/geom/matrix.cljs
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@ -59,12 +59,12 @@
tx2 (:tx om)
ty2 (:ty om)]
(Matrix.
(+ (* a2 a1) (* c2 b1))
(+ (* b2 a1) (* d2 b1))
(+ (* a2 c1) (* c2 d1))
(+ (* b2 c1) (* d2 d1))
(+ tx1 (* tx2 a1) (* ty2 b1))
(+ ty1 (* tx2 c1) (* ty2 d1)))))
(+ (* a2 a1) (* c2 c1))
(+ (* a2 b1) (* c2 d1))
(+ (* b2 a1) (* d2 c1))
(+ (* b2 b1) (* d2 d1))
(+ tx1 (* tx2 a1) (* ty2 c1))
(+ ty1 (* tx2 b1) (* ty2 d1)))))
([m om & others]
(reduce multiply (multiply m om) others)))
@ -114,25 +114,26 @@
(rotate-matrix angle)
(translate-matrix (gpt/negate center)))))
;; ([m angle]
;; (let [center (gpt/point 0 0)]
;; (rotate m angle center)))
;; ([m angle center]
;; (let [angle (mth/radians angle)
;; x (:x center)
;; y (:y center)
;; cos (mth/cos angle)
;; sin (mth/sin angle)
;; nsin (- sin)
;; tx (- x (+ (* x cos)) (* y sin))
;; ty (- y (- (* x sin)) (* y cos))
;; a (+ (* cos (:a m)) (* sin (:b m)))
;; b (+ (* nsin (:a m)) (* cos (:b m)))
;; c (+ (* cos (:c m)) (* sin (:d m)))
;; d (+ (* nsin (:c m)) (* cos (:d m)))
;; tx' (+ (:tx m) (* tx (:a m)) (* ty (:b m)))
;; ty' (+ (:ty m) (* tx (:c m)) (* ty (:d m)))]
;; (Matrix. a b c d tx' ty'))))
(defn rotate*
([m angle]
(let [center (gpt/point 0 0)]
(rotate m angle center)))
([m angle center]
(let [angle (mth/radians angle)
x (:x center)
y (:y center)
cos (mth/cos angle)
sin (mth/sin angle)
nsin (- sin)
tx (- x (+ (* x cos)) (* y sin))
ty (- y (- (* x sin)) (* y cos))
a (+ (* cos (:a m)) (* sin (:c m)))
b (+ (* cos (:b m)) (* sin (:d m)))
c (+ (* nsin (:a m)) (* cos (:c m)))
d (+ (* nsin (:b m)) (* cos (:d m)))
tx' (+ (:tx m) (* tx (:a m)) (* ty (:c m)))
ty' (+ (:ty m) (* tx (:b m)) (* ty (:d m)))]
(Matrix. a b c d tx' ty'))))
(defn scale
"Apply scale transformation to the matrix."