added merge cut edges option to paperfold; some fix in tab generator
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@ -38,6 +38,7 @@
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<param name="fontSize" type="int" min="1" max="100" gui-text="Label font size (%)">15</param>
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<param name="flipLabels" type="bool" gui-text="Flip labels">false</param>
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<param name="dashes" type="bool" gui-text="Dashes for cut/coplanar lines">true</param>
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<param name="merge_cut_lines" type="bool" gui-text="Merge cut lines" gui-description="This will merge all cut lines to a single path">true</param>
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<param name="edgeStyle" type="optiongroup" appearance="combo" gui-text="Edge style">
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<option value="regular">regular</option>
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<option value="saturationsForAngles">saturations for angles</option>
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@ -1,6 +1,7 @@
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#!/usr/bin/env python3
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import math
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import inkex
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from inkex import Transform, TextElement, Tspan, Color, Circle, PathElement, CubicSuperPath
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import tempfile
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import os
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import random
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@ -8,7 +9,7 @@ import numpy as np
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import openmesh as om
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import networkx as nx
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from lxml import etree
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from inkex import Transform, TextElement, Tspan, Color, Circle
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import copy
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"""
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Extension for InkScape 1.0
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@ -68,6 +69,8 @@ class Paperfold(inkex.EffectExtension):
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# Check if two lines intersect
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def lineIntersection(self, v1, v2, v3, v4, epsilon):
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d = (v4[1] - v3[1]) * (v2[0] - v1[0]) - (v4[0] - v3[0]) * (v2[1] - v1[1])
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u = (v4[0] - v3[0]) * (v1[1] - v3[1]) - (v4[1] - v3[1]) * (v1[0] - v3[0])
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@ -77,6 +80,8 @@ class Paperfold(inkex.EffectExtension):
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return ((0 + epsilon) <= u <= (d - epsilon)) and ((0 + epsilon) <= v <= (d - epsilon))
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# Check if a point lies inside a triangle
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def pointInTriangle(self, A, B, C, P, epsilon):
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v0 = [C[0] - A[0], C[1] - A[1]]
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v1 = [B[0] - A[0], B[1] - A[1]]
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@ -91,6 +96,8 @@ class Paperfold(inkex.EffectExtension):
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# Check if two triangles intersect
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def triangleIntersection(self, t1, t2, epsilon):
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if self.lineIntersection(t1[0], t1[1], t2[0], t2[1], epsilon): return True
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if self.lineIntersection(t1[0], t1[1], t2[0], t2[2], epsilon): return True
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@ -115,6 +122,8 @@ class Paperfold(inkex.EffectExtension):
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# Functions for visualisation and output
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def addVisualisationData(self, mesh, unfoldedMesh, originalHalfedges, unfoldedHalfedges, glueNumber, dihedralAngles):
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for i in range(3):
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dihedralAngles[unfoldedMesh.edge_handle(unfoldedHalfedges[i]).idx()] = round(math.degrees(mesh.calc_dihedral_angle(originalHalfedges[i])), self.options.roundingDigits)
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@ -549,7 +558,7 @@ class Paperfold(inkex.EffectExtension):
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vertex1 = mesh.point(mesh.to_vertex_handle(he))
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# Write a straight line between the two corners
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line = edgesGroup.add(inkex.PathElement())
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line = edgesGroup.add(PathElement())
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line.set('d', "M {:0.6f},{:0.6f} {:0.6f},{:0.6f}".format(vertex0[0], vertex0[1], vertex1[0], vertex1[1]))
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# Colour depending on folding direction
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lineStyle = {"fill": "none"}
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@ -656,6 +665,56 @@ class Paperfold(inkex.EffectExtension):
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text.delete()
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tspan.delete()
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'''
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merge cutting edges to single contour. code ripped off from "join path" extension
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'''
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if self.options.merge_cut_lines is True:
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cutEdges = []
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#find all cutting edges - they have to be sorted to build up a clean continuous line
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for edge in edgesGroup:
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edge_id = edge.get('id')
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if "cut-edge-" in edge_id:
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cutEdges.append(edge)
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#find the cutting edge which starts at the previous cutting edge end point
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paths = {p.get('id'): self.getPartsFromCubicSuper(CubicSuperPath(p.get('d'))) for p in cutEdges }
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pathIds = [p.get('id') for p in cutEdges]
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startPathId = pathIds[0]
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pathIds = self.getArrangedIds(paths, startPathId)
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newParts = []
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firstElem = None
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for key in pathIds:
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parts = paths[key]
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# ~ parts = getPartsFromCubicSuper(cspath)
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start = parts[0][0][0]
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elem = self.svg.getElementById(key)
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if(len(newParts) == 0):
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newParts += parts[:]
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firstElem = elem
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else:
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if(self.vectCmpWithMargin(start, newParts[-1][-1][-1], margin = .01)):
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newParts[-1] += parts[0]
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else:
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newSeg = [newParts[-1][-1][-1], newParts[-1][-1][-1], start, start]
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newParts[-1].append(newSeg)
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newParts[-1] += parts[0]
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if(len(parts) > 1):
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newParts += parts[1:]
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parent = elem.getparent()
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parent.remove(elem)
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newElem = copy.copy(firstElem)
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oldId = firstElem.get('id')
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newElem.set('d', CubicSuperPath(self.getCubicSuperFromParts(newParts)))
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newElem.set('id', oldId + '_joined')
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parent.append(newElem) #insert at the end
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if len(textFacesGroup) == 0:
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textFacesGroup.delete() #delete if empty set
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@ -677,6 +736,90 @@ class Paperfold(inkex.EffectExtension):
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return paperfoldPageGroup
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def floatCmpWithMargin(self, float1, float2, margin):
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return abs(float1 - float2) < margin
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def vectCmpWithMargin(self, vect1, vect2, margin):
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return all(self.floatCmpWithMargin(vect2[i], vect1[i], margin) for i in range(0, len(vect1)))
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def getPartsFromCubicSuper(self, cspath):
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parts = []
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for subpath in cspath:
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part = []
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prevBezPt = None
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for i, bezierPt in enumerate(subpath):
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if(prevBezPt != None):
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seg = [prevBezPt[1], prevBezPt[2], bezierPt[0], bezierPt[1]]
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part.append(seg)
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prevBezPt = bezierPt
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parts.append(part)
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return parts
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def getCubicSuperFromParts(self, parts):
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cbsuper = []
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for part in parts:
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subpath = []
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lastPt = None
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pt = None
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for seg in part:
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if(pt == None):
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ptLeft = seg[0]
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pt = seg[0]
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ptRight = seg[1]
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subpath.append([ptLeft, pt, ptRight])
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ptLeft = seg[2]
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pt = seg[3]
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subpath.append([ptLeft, pt, pt])
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cbsuper.append(subpath)
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return cbsuper
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def getArrangedIds(self, pathMap, startPathId):
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nextPathId = startPathId
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orderPathIds = [nextPathId]
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#Arrange in order
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while(len(orderPathIds) < len(pathMap)):
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minDist = 9e+100 #A large float
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closestId = None
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np = pathMap[nextPathId]
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npPts = [np[-1][-1][-1]]
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if(len(orderPathIds) == 1):#compare both the ends for the first path
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npPts.append(np[0][0][0])
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for key in pathMap:
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if(key in orderPathIds):
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continue
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parts = pathMap[key]
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start = parts[0][0][0]
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end = parts[-1][-1][-1]
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for i, npPt in enumerate(npPts):
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dist = abs(start[0] - npPt[0]) + abs(start[1] - npPt[1])
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if(dist < minDist):
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minDist = dist
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closestId = key
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dist = abs(end[0] - npPt[0]) + abs(end[1] - npPt[1])
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if(dist < minDist):
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minDist = dist
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pathMap[key] = [[[pts for pts in reversed(seg)] for seg in \
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reversed(part)] for part in reversed(parts)]
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closestId = key
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#If start point of the first path is closer reverse its direction
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if(i > 0 and closestId == key):
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pathMap[nextPathId] = [[[pts for pts in reversed(seg)] for seg in \
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reversed(part)] for part in reversed(np)]
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orderPathIds.append(closestId)
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nextPathId = closestId
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return orderPathIds
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def add_arguments(self, pars):
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pars.add_argument("--tab")
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@ -704,6 +847,7 @@ class Paperfold(inkex.EffectExtension):
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pars.add_argument("--fontSize", type=int, default=15, help="Label font size (%)")
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pars.add_argument("--flipLabels", type=inkex.Boolean, default=False, help="Flip labels")
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pars.add_argument("--dashes", type=inkex.Boolean, default=True, help="Dashes for cut/coplanar edges")
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pars.add_argument("--merge_cut_lines", type=inkex.Boolean, default=True, help="Merge cut lines")
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pars.add_argument("--edgeStyle", help="Adjust color saturation or opacity for folding edges. The larger the angle the darker the color")
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pars.add_argument("--separateGluePairsByColor", type=inkex.Boolean, default=False, help="Separate glue pairs by color")
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pars.add_argument("--colorCutEdges", type=Color, default='255', help="Cut edges")
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@ -715,6 +859,7 @@ class Paperfold(inkex.EffectExtension):
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pars.add_argument("--joineryMode", type=inkex.Boolean, default=False, help="Enable joinery mode")
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pars.add_argument("--origamiSimulatorMode", type=inkex.Boolean, default=False, help="Enable origami simulator mode")
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def effect(self):
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if not os.path.exists(self.options.inputfile):
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inkex.utils.debug("The input file does not exist. Please select a proper file and try again.")
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@ -531,8 +531,10 @@ class Tabgen(inkex.EffectExtension):
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last_letter = 'Z'
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savid = elem.get_id()
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idmod = 0
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elementPath = Path(elem.path.to_absolute().transform(elem.getparent().composed_transform()))
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parent = elem.getparent()
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#if parent != self.svg.root:
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# elem.path.transform = elem.path.transform(parent.composed_transform())
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elementPath = elem.path.to_non_shorthand().to_absolute()
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isClosed = False
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raw = elementPath.to_arrays()
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if raw[-1][0] == 'Z' or \
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