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refactor

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This commit is contained in:
Justin Lin
2020-02-26 12:32:33 +08:00
parent 2598fb2be2
commit 5c93a7d6c9
1 changed files with 2 additions and 4 deletions
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6
src/experimental/_impl/_m_determinant_impl.scad
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@@ -1,7 +1,5 @@
use <util/slice.scad>; use <util/slice.scad>;
use <experimental/sum.scad>;
function _m_determinant_sum(lt, leng, i = 0) =
i == leng ? 0 : (lt[i] + _m_determinant_sum(lt, leng, i + 1));
function _m_determinant_sub(matrix, leng, fc) = function _m_determinant_sub(matrix, leng, fc) =
let( let(
@@ -17,4 +15,4 @@ function _m_determinant(matrix) =
let(leng = len(matrix)) let(leng = len(matrix))
leng == 2 ? matrix[0][0] * matrix[1][1] - matrix[1][0] * matrix[0][1] : leng == 2 ? matrix[0][0] * matrix[1][1] - matrix[1][0] * matrix[0][1] :
let(indices = [for(i = [0:leng - 1]) i]) let(indices = [for(i = [0:leng - 1]) i])
_m_determinant_sum([for(fc = indices) _m_determinant_sub(matrix, leng, fc)], leng); sum([for(fc = indices) _m_determinant_sub(matrix, leng, fc)]);