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refactor: no undef

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Justin Lin
2022-03-21 14:55:38 +08:00
parent a0d4d732a7
commit a9b40f133b
1 changed files with 8 additions and 15 deletions
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23
src/experimental/_impl/_tiles_wfc_impl.scad
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@@ -55,25 +55,18 @@ function wf_eigenstates_at(wf, x, y) = wf_eigenstates(wf)[y][x];
function wf_collapse(wf, x, y) = function wf_collapse(wf, x, y) =
let( let(
weights = wf_weights(wf), states = wf_eigenstates_at(wf, x, y),
states_xy = wf_eigenstates_at(wf, x, y), all_weights = wf_weights(wf),
weights_xy = [ weights = [for(state = states) hashmap_get(all_weights, state)],
for(state = states_xy) threshold = rand() * sum(weights)
let(w = hashmap_get(weights, state))
if(w != undef)
[state, w]
],
leng = len(weights_xy),
threshold = rand() * sum([for(i = 0; i < leng; i = i + 1) weights_xy[i][1]])
) )
_wf_collapse(wf, x, y, weights_xy, len(weights_xy), threshold); _wf_collapse(wf, x, y, states, weights, len(states), threshold);
function _wf_collapse(wf, x, y, states_weights, leng, threshold, i = 0) = function _wf_collapse(wf, x, y, states, weights, leng, threshold, i = 0) =
threshold < 0 || i == leng ? wf : threshold < 0 || i == leng ? wf :
let(state_weight = states_weights[i])
_wf_collapse( _wf_collapse(
threshold < state_weight[1] ? _replaceStatesAt(wf, x, y, [state_weight[0]]) : wf, threshold < weights[i] ? _replaceStatesAt(wf, x, y, [states[i]]) : wf,
x, y, states_weights, leng, threshold - state_weight[1], i + 1 x, y, states, weights, leng, threshold - weights[i], i + 1
); );
// Shannon entropy // Shannon entropy