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Code cleanup

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This commit is contained in:
Jaime van Kessel 2016-03-02 14:49:41 +01:00
parent 9c9aed5442
commit a50ef02d81
3 changed files with 38 additions and 21 deletions
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37
cura/OneAtATimeIterator.py
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@ -25,22 +25,23 @@ class OneAtATimeIterator(Iterator.Iterator):
return
if node.callDecoration("getConvexHull"):
node_list.append(node)
if len(node_list) < 2:
self._node_stack = node_list[:]
return
# Copy the list
self._original_node_list = node_list[:]
## Initialise the hit map (pre-compute all hits between all objects)
self._hit_map = [[self._checkHit(j,i) for i in node_list] for j in node_list]
self._hit_map = [[self._checkHit(i,j) for i in node_list] for j in node_list]
# Check if we have to files that block eachother. If this is the case, there is no solution!
for a in range(0,len(node_list)):
for b in range(0,len(node_list)):
if a != b and self._hit_map[a][b] and self._hit_map[b][a]:
return
# Sort the original list so that items that block the most other objects are at the beginning.
# This does not decrease the worst case running time, but should improve it in most cases.
sorted(node_list, key = cmp_to_key(self._calculateScore))
@ -59,44 +60,46 @@ class OneAtATimeIterator(Iterator.Iterator):
# We have no more nodes to check, so quit looking.
todo_node_list = None
self._node_stack = new_order
return
todo_node_list.append(_ObjectOrder(new_order, new_todo_list))
self._node_stack = [] #No result found!
self._node_stack = [] #No result found!
# Check if first object can be printed before the provided list (using the hit map)
def _checkHitMultiple(self, node, other_nodes):
node_index = self._original_node_list.index(node)
for other_node in other_nodes:
if self._hit_map[node_index][self._original_node_list.index(other_node)]:
other_node_index = self._original_node_list.index(other_node)
if self._hit_map[node_index][other_node_index]:
return True
return False
def _checkBlockMultiple(self, node, other_nodes):
node_index = self._original_node_list.index(node)
for other_node in other_nodes:
if self._hit_map[self._original_node_list.index(other_node)][node_index] and node_index != self._original_node_list.index(other_node):
other_node_index = self._original_node_list.index(other_node)
if self._hit_map[other_node_index][node_index] and node_index != other_node_index:
return True
return False
## Calculate score simply sums the number of other objects it 'blocks'
def _calculateScore(self, a, b):
score_a = sum(self._hit_map[self._original_node_list.index(a)])
score_b = sum(self._hit_map[self._original_node_list.index(b)])
return score_a - score_b
# Checks if A can be printed before B
def _checkHit(self, a, b):
if a == b:
return False
overlap = a.callDecoration("getConvexHullBoundary").intersectsPolygon(b.callDecoration("getConvexHullHead"))
if overlap:
return True
else:
return False
## Internal object used to keep track of a possible order in which to print objects.
class _ObjectOrder():
@ -107,4 +110,4 @@ class _ObjectOrder():
"""
self.order = order
self.todo = todo