topical media & game development
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

talk show tell print

math -- animation 10
math(s) / tutorial(s)

coordinate rotation(s)



  x1 = Math.cos(angle) * x - Math.sin(angle) * y;
  y1 = Math.cos(angle) * y + Math.sin(angle) * x;

reverse coordinate rotation(s)



  x1 = Math.cos(angle) * x + Math.sin(angle) * y;
  y1 = Math.cos(angle) * y - Math.sin(angle) * x;
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

(C) Æliens 04/09/2009

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