FabLab_Chemnitz/mightyscape-1.1-deprecated
FabLab_Chemnitz
/
mightyscape-1.1-deprecated
Archived
1
0
Fork 0
Code Issues Pull Requests Releases Activity

add option to paperfold

This commit is contained in:
Mario Voigt 2021-05-12 01:22:17 +02:00
parent 8efb1d4b18
commit 213542627b
3 changed files with 20 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
extensions/fablabchemnitz/dxf2papercraft/delete_me_later
View File

@ -1,4 +0,0 @@
#VRML V1.0 ascii
Separator {
}

1
extensions/fablabchemnitz/paperfold.inx
View File

@ -18,6 +18,7 @@
<param name="printLengths" type="bool" gui-text="Print lengths on edges">false</param>
<param name="printTriangleNumbers" type="bool" gui-text="Print triangle numbers on faces">false</param>
<param name="importCoplanarEdges" type="bool" gui-text="Import coplanar edges">false</param>
<param name="experimentalWeights" type="bool" gui-text="Mess around with algorithm">false</param>
<param name="printStats" type="bool" gui-text="Show some unfold statistics">false</param>
<param name="resizetoimport" type="bool" gui-text="Resize the canvas to the imported drawing's bounding box">true</param>
<param name="extraborder" type="float" precision="3" gui-text="Add extra border around fitted canvas">0.0</param>

29
extensions/fablabchemnitz/paperfold.py
View File

@ -41,6 +41,7 @@ todo:
- fstl preview
- fix line: dualGraph.add_edge(face1.idx(), face2.idx(), idx=edge.idx(), weight=edgeweight) # #might fail without throwing any error (silent aborts) ...
- option to set fill color per face
- add some way to merge coplanar triangles (tri-faces) to polygons and keep those polygons (facets) intact. At the moment facets are getting destroyed. Not good for some papercrafts
"""
class Unfold(inkex.EffectExtension):
@ -317,11 +318,19 @@ class Unfold(inkex.EffectExtension):
# The two sides adjacent to the edge
face1 = mesh.face_handle(mesh.halfedge_handle(edge, 0))
face2 = mesh.face_handle(mesh.halfedge_handle(edge, 1))
# The weight
edgeweight = 1.0 - (mesh.calc_edge_length(edge) - minLength) / (maxLength - minLength)
if self.options.experimentalWeights is True:
if round(math.degrees(mesh.calc_dihedral_angle(edge)), self.options.roundingDigits) > 0:
edgeweight = 1.0 - (mesh.calc_edge_length(edge) - minLength) / (maxLength - minLength)
if round(math.degrees(mesh.calc_dihedral_angle(edge)), self.options.roundingDigits) < 0:
edgeweight = -(1.0 - (mesh.calc_edge_length(edge) - minLength) / (maxLength - minLength))
if round(math.degrees(mesh.calc_dihedral_angle(edge)), self.options.roundingDigits) == 0:
edgeweight = 0.0
#inkex.utils.debug("edgeweight = " + str(edgeweight))
# Calculate the centres of the pages (only necessary for visualisation)
center1 = (0, 0)
for vertex in mesh.fv(face1):
@ -335,7 +344,6 @@ class Unfold(inkex.EffectExtension):
dualGraph.add_node(face2.idx(), pos=center2)
dualGraph.add_edge(face1.idx(), face2.idx(), idx=edge.idx(), weight=edgeweight) # #might fail without throwing any error ...
# Calculate the minimum spanning tree
spanningTree = nx.minimum_spanning_tree(dualGraph)
@ -465,8 +473,8 @@ class Unfold(inkex.EffectExtension):
gluePairs = 0
cuts = 0
coplanarEdges = 0
mountainPerforations = 0
valleyPerforations = 0
mountainFolds = 0
valleyFolds = 0
# Calculate the bounding box
[xmin, ymin, boxSize] = self.findBoundingBox(unfolding[0])
@ -563,11 +571,11 @@ class Unfold(inkex.EffectExtension):
if dihedralAngle > 0:
lineStyle.update({"stroke": self.options.colorMountainFolds})
line.set("id", uniqueMainId + "-mountain-fold-" + str(edge.idx()))
mountainPerforations += 1
mountainFolds += 1
if dihedralAngle < 0:
lineStyle.update({"stroke": self.options.colorValleyFolds})
line.set("id", uniqueMainId + "-valley-fold-" + str(edge.idx()))
valleyPerforations += 1
valleyFolds += 1
if dihedralAngle == 0:
lineStyle.update({"stroke": self.options.colorCoplanarEdges})
line.set("id", uniqueMainId + "-coplanar-edge-" + str(edge.idx()))
@ -660,8 +668,8 @@ class Unfold(inkex.EffectExtension):
if self.options.printStats is True:
inkex.utils.debug(" * Number of cuts: " + str(cuts))
inkex.utils.debug(" * Number of coplanar edges: " + str(coplanarEdges))
inkex.utils.debug(" * Number of mountain folds: " + str(mountainPerforations))
inkex.utils.debug(" * Number of valley folds: " + str(valleyPerforations))
inkex.utils.debug(" * Number of mountain folds: " + str(mountainFolds))
inkex.utils.debug(" * Number of valley folds: " + str(valleyFolds))
inkex.utils.debug(" * Number of glue pairs: {:0.0f}".format(gluePairs / 2))
inkex.utils.debug(" * min angle: {:0.2f}".format(self.minAngle))
inkex.utils.debug(" * max angle: {:0.2f}".format(self.maxAngle))
@ -684,6 +692,7 @@ class Unfold(inkex.EffectExtension):
pars.add_argument("--printLengths", type=inkex.Boolean, default=False, help="Print lengths on edges")
pars.add_argument("--printTriangleNumbers", type=inkex.Boolean, default=False, help="Print triangle numbers on faces")
pars.add_argument("--importCoplanarEdges", type=inkex.Boolean, default=False, help="Import coplanar edges")
pars.add_argument("--experimentalWeights", type=inkex.Boolean, default=False, help="Mess around with algorithm")
pars.add_argument("--printStats", type=inkex.Boolean, default=False, help="Show some unfold statistics")
pars.add_argument("--resizetoimport", type=inkex.Boolean, default=True, help="Resize the canvas to the imported drawing's bounding box")
pars.add_argument("--extraborder", type=float, default=0.0)
@ -711,7 +720,7 @@ class Unfold(inkex.EffectExtension):
inkex.utils.debug("The input file does not exist. Please select a proper file and try again.")
exit(1)
mesh = om.read_trimesh(self.options.inputfile)
#mesh = om.read_polymesh(self.options.inputfile) #we must work with triangles instead of polygons because the algorithm works with that
#mesh = om.read_polymesh(self.options.inputfile) #we must work with triangles instead of polygons because the algorithm works with that ONLY
fullUnfolded, unfoldedComponents = self.unfold(mesh)
unfoldComponentCount = len(unfoldedComponents)