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152:) parallel redrawings of a structural framework is dual to the existence of an infinitesimal motion, one that preserves its edge lengths but not their orientations. Thus, a framework has one kind of motion if it has the other kind, but detecting the existence of a parallel redrawing may be easier than detecting the existence of an infinitesimal motion.
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to determine the existence of a morph for three or more slopes. Any parallel morph can be parameterized so that the each point moves with constant speed along a line. The graphs that remain planar throughout such a motion can be derived from
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128:, there may exist parallel redrawings that cannot be connected by a parallel morph. For two-dimensional planar drawings, with parallel edges required to preserve their orientation, a morph always exists when the
113:, a parallel drawing can be obtained by translating the plane of one of the polyhedron's face, and adjusting the positions of the vertices and edges that border that face. A polyhedron is said to be
121:, the cube and dodecahedron are not tight (because of the possibility of translating one face while keeping the others fixed), but the tetrahedron, octahedron, and icosahedron are tight.
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is another drawing of the same graph such that all edges of the second drawing are parallel to their corresponding edges in the first drawing. A
109:, and other modifications of the drawing that change it more locally. For instance, for graphs drawn as the vertices or edges of a
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In three dimensions, even for drawings where all edges are axis-parallel and the drawing forms the boundary of a
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Graph
Drawing: 13th International Symposium, GD 2005, Limerick, Ireland, September 12-14, 2005, Revised Papers
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Graph
Drawing: 13th International Symposium, GD 2005, Limerick, Ireland, September 12-14, 2005, Revised Papers
206:, IMS Lecture Notes Monogr. Ser., vol. 48, Inst. Math. Statist., Beachwood, OH, pp. 169–175,
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if its only parallel redrawings are similarities (combinations of translation and scaling); among the
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390:(2006), "Parallel-redrawing mechanisms, pseudo-triangulations and kinetic planar graphs",
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394:, Lecture Notes in Computer Science, vol. 3843, Berlin: Springer, pp. 421–433,
304:; Spriggs, Michael J. (2006), "Morphing planar graphs while preserving edge directions",
258:; Spriggs, Michael J. (2009), "Morphing polyhedra with parallel faces: counterexamples",
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344:; Petrick, Mark; Spriggs, Michael (2013), "Morphing orthogonal planar graph drawings",
308:, Lecture Notes in Computer Science, vol. 3843, Berlin: Springer, pp. 13–24,
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of a graph is a continuous family of drawings, all parallel redrawings of each other.
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204:Dynamics & stochastics
465:Mathematics of rigidity
35:, as no other articles
455:Geometric graph theory
261:Computational Geometry
90:or higher-dimensional
72:geometric graph theory
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139:pseudotriangulations
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424:Servatius, Brigitte
401:10.1007/11618058_38
189:2002math......6103B
146:structural rigidity
76:structural rigidity
352:(4): Art. 29, 24,
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59:August 2023
449:Categories
156:References
126:polyhedron
50:; try the
37:link to it
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40:. Please
426:(1993),
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115:tight
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