hodapp/automata_scratch
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

First example of actual 3D recursive shape!

Browse Source
This commit is contained in:
Chris Hodapp 2019-09-28 04:04:22 +02:00
parent 3c74135a4e
commit d6f6edc8a8
2 changed files with 58 additions and 72 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

115
Scratch.ipynb
View File

File diff suppressed because one or more lines are too long

15
meshutil.py
View File

@ -46,6 +46,8 @@ class Transform(object):
def _compose(self, mtx2): def _compose(self, mtx2):
# Note pre-multiply. Earlier transforms are done first. # Note pre-multiply. Earlier transforms are done first.
return Transform(mtx2 @ self.mtx) return Transform(mtx2 @ self.mtx)
def compose(self, xform):
return self._compose(xform.mtx)
def scale(self, *a, **kw): def scale(self, *a, **kw):
return self._compose(mtx_scale(*a, **kw)) return self._compose(mtx_scale(*a, **kw))
def translate(self, *a, **kw): def translate(self, *a, **kw):
@ -160,7 +162,7 @@ def join_boundary_simple(bound1, bound2):
# simply connecting quads (made of 2 triangles) straight across. # simply connecting quads (made of 2 triangles) straight across.
# #
# Winding will proceed in the direction of the first boundary. # Winding will proceed in the direction of the first boundary.
#` #
# Returns FaceVertexMesh. # Returns FaceVertexMesh.
n = bound1.shape[0] n = bound1.shape[0]
vs = numpy.concatenate([bound1, bound2]) vs = numpy.concatenate([bound1, bound2])
@ -172,3 +174,14 @@ def join_boundary_simple(bound1, bound2):
fs[2*i] = [n + v1, n + v0, v0] fs[2*i] = [n + v1, n + v0, v0]
fs[2*i + 1] = [v1, n + v1, v0] fs[2*i + 1] = [v1, n + v1, v0]
return FaceVertexMesh(vs, fs) return FaceVertexMesh(vs, fs)
def close_boundary_simple(bound):
# This will fail for any non-convex boundary!
centroid = numpy.mean(bound, axis=0)
vs = numpy.concatenate([bound, centroid[numpy.newaxis,:]])
n = bound.shape[0]
# note that n is new the index of the centroid
fs = numpy.zeros((n+1, 3), dtype=int)
for i in range(n):
fs[i] = [i, n, (i+1) % n]
return FaceVertexMesh(vs, fs)