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space_view3d_point_cloud_visualizer.py
executable file
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space_view3d_point_cloud_visualizer.py
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# ##### BEGIN GPL LICENSE BLOCK #####
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# ##### END GPL LICENSE BLOCK #####
# Copyright (c) 2023 Jakub Uhlik
bl_info = {"name": "Point Cloud Visualizer",
"description": "Display, edit, filter, render, convert, generate and export colored point cloud PLY files.",
"author": "Jakub Uhlik",
"version": (0, 9, 30),
"blender": (2, 81, 0),
"location": "View3D > Sidebar > Point Cloud Visualizer",
"warning": "",
"wiki_url": "https://github.com/uhlik/bpy",
"tracker_url": "https://github.com/uhlik/bpy/issues",
"category": "3D View", }
import os
import struct
import uuid
import time
import datetime
import math
import numpy as np
import re
import shutil
import sys
import random
import statistics
import bpy
import bmesh
from bpy.props import PointerProperty, BoolProperty, StringProperty, FloatProperty, IntProperty, FloatVectorProperty, EnumProperty, CollectionProperty
from bpy.types import PropertyGroup, Panel, Operator, AddonPreferences, UIList
import gpu
from gpu.types import GPUOffScreen, GPUShader, GPUBatch, GPUVertBuf, GPUVertFormat
from gpu_extras.batch import batch_for_shader
from bpy.app.handlers import persistent
import bgl
from mathutils import Matrix, Vector, Quaternion, Color
from bpy_extras.object_utils import world_to_camera_view
from bpy_extras.io_utils import axis_conversion, ExportHelper
from mathutils.kdtree import KDTree
from mathutils.geometry import barycentric_transform
from mathutils.interpolate import poly_3d_calc
from mathutils.bvhtree import BVHTree
import mathutils.geometry
# NOTE $ pycodestyle --ignore=W293,E501,E741,E402 --exclude='io_mesh_fast_obj/blender' .
def log(msg, indent=0, prefix='>', ):
m = "{}{} {}".format(" " * indent, prefix, msg)
if(debug_mode()):
print(m)
def debug_mode():
# return True
return (bpy.app.debug_value != 0)
class Progress():
def __init__(self, total, indent=0, prefix="> ", ):
self.current = 0
self.percent = -1
self.last = -1
self.total = total
self.prefix = prefix
self.indent = indent
self.t = " "
self.r = "\r"
self.n = "\n"
def step(self, numdone=1):
if(not debug_mode()):
return
self.current += numdone
self.percent = int(self.current / (self.total / 100))
if(self.percent > self.last):
sys.stdout.write(self.r)
sys.stdout.write("{0}{1}{2}%".format(self.t * self.indent, self.prefix, self.percent))
self.last = self.percent
if(self.percent >= 100 or self.total == self.current):
sys.stdout.write(self.r)
sys.stdout.write("{0}{1}{2}%{3}".format(self.t * self.indent, self.prefix, 100, self.n))
class PCMeshInstancerMeshGenerator():
def __init__(self, mesh_type='VERTEX', length=1.0, radius=1.0, subdivision=2, ):
if(mesh_type not in ('VERTEX', 'TRIANGLE', 'TETRAHEDRON', 'CUBE', 'ICOSPHERE', )):
raise TypeError("Unknown mesh type: {}".format(mesh_type))
self.mesh_type = mesh_type
if(length <= 0):
log("length is (or less than) 0, which is ridiculous. setting to 0.001..", 1)
length = 0.001
self.length = length
if(radius <= 0):
log("radius is (or less than) 0, which is ridiculous. setting to 0.001..", 1)
radius = 0.001
self.radius = radius
subdivision = int(subdivision)
if(not (0 < subdivision <= 2)):
log("subdivision 1 or 2 allowed, not {}, setting to 1".format(subdivision), 1)
subdivision = 1
self.subdivision = subdivision
self.def_verts, self.def_edges, self.def_faces = self.generate()
def generate(self):
def circle2d_coords(radius, steps, offset, ox, oy):
r = []
angstep = 2 * math.pi / steps
for i in range(steps):
x = math.sin(i * angstep + offset) * radius + ox
y = math.cos(i * angstep + offset) * radius + oy
r.append((x, y))
return r
if(self.mesh_type == 'VERTEX'):
return [(0, 0, 0, ), ], [], []
elif(self.mesh_type == 'TRIANGLE'):
offset = 0.0
r = math.sqrt(3) / 3 * self.length
c = circle2d_coords(r, 3, offset, 0, 0)
dv = []
for i in c:
dv.append((i[0], i[1], 0, ))
df = [(0, 2, 1, ), ]
return dv, [], df
elif(self.mesh_type == 'TETRAHEDRON'):
l = self.length
excircle_radius = math.sqrt(3) / 3 * l
c = circle2d_coords(excircle_radius, 3, 0, 0, 0)
h = l / 3 * math.sqrt(6)
dv = [(c[0][0], c[0][1], 0, ), (c[1][0], c[1][1], 0, ), (c[2][0], c[2][1], 0, ), (0, 0, h, ), ]
df = ([(0, 1, 2), (3, 2, 1), (3, 1, 0), (3, 0, 2), ])
return dv, [], df
elif(self.mesh_type == 'CUBE'):
l = self.length / 2
dv = [(+l, +l, -l), (+l, -l, -l), (-l, -l, -l), (-l, +l, -l), (+l, +l, +l), (+l, -l, +l), (-l, -l, +l), (-l, +l, +l), ]
df = [(0, 1, 2, 3), (4, 7, 6, 5), (0, 4, 5, 1), (1, 5, 6, 2), (2, 6, 7, 3), (4, 0, 3, 7), ]
return dv, [], df
elif(self.mesh_type == 'ICOSPHERE'):
if(self.subdivision == 1):
dv = [(0.0, 0.0, -0.5), (0.3617999851703644, -0.2628600001335144, -0.22360749542713165), (-0.13819250464439392, -0.42531999945640564, -0.22360749542713165), (-0.44721248745918274, 0.0, -0.22360749542713165), (-0.13819250464439392, 0.42531999945640564, -0.22360749542713165), (0.3617999851703644, 0.2628600001335144, -0.22360749542713165), (0.13819250464439392, -0.42531999945640564, 0.22360749542713165), (-0.3617999851703644, -0.2628600001335144, 0.22360749542713165), (-0.3617999851703644, 0.2628600001335144, 0.22360749542713165), (0.13819250464439392, 0.42531999945640564, 0.22360749542713165), (0.44721248745918274, 0.0, 0.22360749542713165), (0.0, 0.0, 0.5)]
df = [(0, 1, 2), (1, 0, 5), (0, 2, 3), (0, 3, 4), (0, 4, 5), (1, 5, 10), (2, 1, 6), (3, 2, 7), (4, 3, 8), (5, 4, 9), (1, 10, 6), (2, 6, 7), (3, 7, 8), (4, 8, 9), (5, 9, 10), (6, 10, 11), (7, 6, 11), (8, 7, 11), (9, 8, 11), (10, 9, 11)]
elif(self.subdivision == 2):
dv = [(0.0, 0.0, -0.5), (0.36180365085601807, -0.2628626525402069, -0.22360976040363312), (-0.1381940096616745, -0.42532461881637573, -0.22360992431640625), (-0.4472131133079529, 0.0, -0.22360780835151672), (-0.1381940096616745, 0.42532461881637573, -0.22360992431640625), (0.36180365085601807, 0.2628626525402069, -0.22360976040363312), (0.1381940096616745, -0.42532461881637573, 0.22360992431640625), (-0.36180365085601807, -0.2628626525402069, 0.22360976040363312), (-0.36180365085601807, 0.2628626525402069, 0.22360976040363312), (0.1381940096616745, 0.42532461881637573, 0.22360992431640625), (0.4472131133079529, 0.0, 0.22360780835151672), (0.0, 0.0, 0.5), (-0.08122777938842773, -0.24999763071537018, -0.42532721161842346), (0.21266134083271027, -0.15450569987297058, -0.4253270924091339), (0.13143441081047058, -0.40450581908226013, -0.26286882162094116), (0.4253239333629608, 0.0, -0.2628679573535919), (0.21266134083271027, 0.15450569987297058, -0.4253270924091339), (-0.262864887714386, 0.0, -0.42532584071159363), (-0.3440946936607361, -0.24999846518039703, -0.26286810636520386), (-0.08122777938842773, 0.24999763071537018, -0.42532721161842346), (-0.3440946936607361, 0.24999846518039703, -0.26286810636520386), (0.13143441081047058, 0.40450581908226013, -0.26286882162094116), (0.47552892565727234, -0.15450631082057953, 0.0), (0.47552892565727234, 0.15450631082057953, 0.0), (0.0, -0.4999999701976776, 0.0), (0.2938928008079529, -0.4045083522796631, 0.0), (-0.47552892565727234, -0.15450631082057953, 0.0), (-0.2938928008079529, -0.4045083522796631, 0.0), (-0.2938928008079529, 0.4045083522796631, 0.0), (-0.47552892565727234, 0.15450631082057953, 0.0), (0.2938928008079529, 0.4045083522796631, 0.0), (0.0, 0.4999999701976776, 0.0), (0.3440946936607361, -0.24999846518039703, 0.26286810636520386), (-0.13143441081047058, -0.40450581908226013, 0.26286882162094116), (-0.4253239333629608, 0.0, 0.2628679573535919), (-0.13143441081047058, 0.40450581908226013, 0.26286882162094116), (0.3440946936607361, 0.24999846518039703, 0.26286810636520386), (0.08122777938842773, -0.24999763071537018, 0.4253271818161011), (0.262864887714386, 0.0, 0.42532584071159363), (-0.21266134083271027, -0.15450569987297058, 0.4253270924091339), (-0.21266134083271027, 0.15450569987297058, 0.4253270924091339), (0.08122777938842773, 0.24999763071537018, 0.4253271818161011)]
df = [(0, 13, 12), (1, 13, 15), (0, 12, 17), (0, 17, 19), (0, 19, 16), (1, 15, 22), (2, 14, 24), (3, 18, 26), (4, 20, 28), (5, 21, 30), (1, 22, 25), (2, 24, 27), (3, 26, 29), (4, 28, 31), (5, 30, 23), (6, 32, 37), (7, 33, 39), (8, 34, 40), (9, 35, 41), (10, 36, 38), (38, 41, 11), (38, 36, 41), (36, 9, 41), (41, 40, 11), (41, 35, 40), (35, 8, 40), (40, 39, 11), (40, 34, 39), (34, 7, 39), (39, 37, 11), (39, 33, 37), (33, 6, 37), (37, 38, 11), (37, 32, 38), (32, 10, 38), (23, 36, 10), (23, 30, 36), (30, 9, 36), (31, 35, 9), (31, 28, 35), (28, 8, 35), (29, 34, 8), (29, 26, 34), (26, 7, 34), (27, 33, 7), (27, 24, 33), (24, 6, 33), (25, 32, 6), (25, 22, 32), (22, 10, 32), (30, 31, 9), (30, 21, 31), (21, 4, 31), (28, 29, 8), (28, 20, 29), (20, 3, 29), (26, 27, 7), (26, 18, 27), (18, 2, 27), (24, 25, 6), (24, 14, 25), (14, 1, 25), (22, 23, 10), (22, 15, 23), (15, 5, 23), (16, 21, 5), (16, 19, 21), (19, 4, 21), (19, 20, 4), (19, 17, 20), (17, 3, 20), (17, 18, 3), (17, 12, 18), (12, 2, 18), (15, 16, 5), (15, 13, 16), (13, 0, 16), (12, 14, 2), (12, 13, 14), (13, 1, 14)]
else:
raise ValueError("unsupported subdivision: {}".format(self.subdivision))
return dv, [], df
else:
return [(0, 0, 0, ), ], [], []
class PCMeshInstancer():
def __init__(self, name, points, generator=None, matrix=None, size=0.01, normal_align=False, vcols=False, ):
log("{}:".format(self.__class__.__name__), 0, )
self.name = name
self.points = points
if(generator is None):
generator = PCMeshInstancerMeshGenerator()
self.generator = generator
if(matrix is None):
matrix = Matrix()
self.matrix = matrix
self.size = size
self.normal_align = normal_align
self.vcols = vcols
self.uuid = uuid.uuid1()
log("calculating matrices..", 1)
self.calc_matrices()
log("calculating mesh..", 1)
self.calc_mesh_data()
log("creating mesh..", 1)
self.mesh = bpy.data.meshes.new(self.name)
self.mesh.from_pydata(self.verts, self.edges, self.faces)
self.object = self.add_object(self.name, self.mesh)
self.object.matrix_world = self.matrix
self.activate_object(self.object)
if(self.vcols):
log("making vertex colors..", 1)
self.make_vcols()
log("cleanup..", 1)
context = bpy.context
view_layer = context.view_layer
collection = view_layer.active_layer_collection.collection
collection.objects.unlink(self.def_object)
bpy.data.objects.remove(self.def_object)
bpy.data.meshes.remove(self.def_mesh)
log("done.", 1)
def add_object(self, name, data, ):
so = bpy.context.scene.objects
for i in so:
i.select_set(False)
o = bpy.data.objects.new(name, data)
context = bpy.context
view_layer = context.view_layer
collection = view_layer.active_layer_collection.collection
collection.objects.link(o)
o.select_set(True)
view_layer.objects.active = o
return o
def activate_object(self, obj, ):
bpy.ops.object.select_all(action='DESELECT')
context = bpy.context
view_layer = context.view_layer
obj.select_set(True)
view_layer.objects.active = obj
def calc_matrices(self):
def split(p):
co = (p[0], p[1], p[2])
no = (p[3], p[4], p[5])
rgb = (p[6], p[7], p[8])
return co, no, rgb
def rotation_to(a, b):
# http://stackoverflow.com/questions/1171849/finding-quaternion-representing-the-rotation-from-one-vector-to-another
# https://github.com/toji/gl-matrix/blob/f0583ef53e94bc7e78b78c8a24f09ed5e2f7a20c/src/gl-matrix/quat.js#L54
a = a.normalized()
b = b.normalized()
q = Quaternion()
tmpvec3 = Vector()
xUnitVec3 = Vector((1, 0, 0))
yUnitVec3 = Vector((0, 1, 0))
dot = a.dot(b)
if(dot < -0.999999):
tmpvec3 = xUnitVec3.cross(a)
if(tmpvec3.length < 0.000001):
tmpvec3 = yUnitVec3.cross(a)
tmpvec3.normalize()
q = Quaternion(tmpvec3, math.pi)
elif(dot > 0.999999):
q.x = 0
q.y = 0
q.z = 0
q.w = 1
else:
tmpvec3 = a.cross(b)
q.x = tmpvec3[0]
q.y = tmpvec3[1]
q.z = tmpvec3[2]
q.w = 1 + dot
q.normalize()
return q
_, _, osv = self.matrix.decompose()
osm = Matrix(((osv.x, 0.0, 0.0, 0.0), (0.0, osv.y, 0.0, 0.0), (0.0, 0.0, osv.z, 0.0), (0.0, 0.0, 0.0, 1.0))).inverted()
# calculate instance matrices from points..
self.matrices = []
for i, p in enumerate(self.points):
co, no, rgb = split(p)
# location
ml = Matrix.Translation(co).to_4x4()
if(self.normal_align):
# rotation from normal
quat = rotation_to(Vector((0, 0, 1)), Vector(no))
mr = quat.to_matrix().to_4x4()
else:
mr = Matrix.Rotation(0.0, 4, 'Z')
# scale
s = self.size
ms = Matrix(((s, 0.0, 0.0, 0.0), (0.0, s, 0.0, 0.0), (0.0, 0.0, s, 0.0), (0.0, 0.0, 0.0, 1.0)))
# combine
m = ml @ mr @ ms @ osm
self.matrices.append(m)
def calc_mesh_data(self):
# initialize lists
l = len(self.matrices)
self.verts = [(0, 0, 0)] * (l * len(self.generator.def_verts))
self.edges = [(0, 0)] * (l * len(self.generator.def_edges))
self.faces = [(0)] * (l * len(self.generator.def_faces))
self.colors = [None] * l
# generator data
v, e, f = self.generator.generate()
self.def_verts = v
self.def_edges = e
self.def_faces = f
# def object
self.def_mesh = bpy.data.meshes.new("PCInstancer-def_mesh-{}".format(self.uuid))
self.def_mesh.from_pydata(v, e, f)
self.def_object = self.add_object("PCInstancer-def_object-{}".format(self.uuid), self.def_mesh)
# loop over matrices
for i, m in enumerate(self.matrices):
# transform mesh
self.def_mesh.transform(m)
# store
self.write_pydata_chunk(i)
# reset mesh
for j, v in enumerate(self.def_object.data.vertices):
v.co = Vector(self.def_verts[j])
def write_pydata_chunk(self, i, ):
# exponents
ev = len(self.generator.def_verts)
ee = len(self.generator.def_edges)
ef = len(self.generator.def_faces)
# vertices
for j in range(ev):
self.verts[(i * ev) + j] = self.def_mesh.vertices[j].co.to_tuple()
# edges
if(len(self.def_edges) is not 0):
for j in range(ee):
self.edges[(i * ee) + j] = ((i * ev) + self.def_edges[j][0],
(i * ev) + self.def_edges[j][1], )
# faces
if(len(self.def_faces) is not 0):
for j in range(ef):
# tris
if(len(self.def_faces[j]) == 3):
self.faces[(i * ef) + j] = ((i * ev) + self.def_faces[j][0],
(i * ev) + self.def_faces[j][1],
(i * ev) + self.def_faces[j][2], )
# quads
elif(len(self.def_faces[j]) == 4):
self.faces[(i * ef) + j] = ((i * ev) + self.def_faces[j][0],
(i * ev) + self.def_faces[j][1],
(i * ev) + self.def_faces[j][2],
(i * ev) + self.def_faces[j][3], )
# ngons
else:
ngon = []
for a in range(len(self.def_faces[j])):
ngon.append((i * ev) + self.def_faces[j][a])
self.faces[(i * ef) + j] = tuple(ngon)
def make_vcols(self):
if(len(self.mesh.loops) != 0):
colors = []
for i, v in enumerate(self.points):
rgb = (v[6], v[7], v[8])
col = (rgb[0] / 255.0, rgb[1] / 255.0, rgb[2] / 255.0)
colors.append(col)
num = len(self.def_verts)
vc = self.mesh.vertex_colors.new()
for l in self.mesh.loops:
vi = l.vertex_index
li = l.index
c = colors[int(vi / num)]
vc.data[li].color = c + (1.0, )
else:
log("no mesh loops in mesh", 2, )
class PCMeshInstancer2():
def __init__(self, name, vs, ns=None, cs=None, generator=None, matrix=None, size=0.01, with_normal_align=False, with_vertex_colors=False, ):
log("{}:".format(self.__class__.__name__), 0, )
self.name = name
self.vs = vs
self.has_normals = True
if(ns is None):
self.has_normals = False
with_normal_align = False
self.ns = ns
self.has_colors = True
if(cs is None):
self.has_colors = False
with_vertex_colors = False
self.cs = cs
if(generator is None):
generator = PCMeshInstancerMeshGenerator()
self.generator = generator
if(matrix is None):
matrix = Matrix()
self.matrix = matrix
self.size = size
self.with_normal_align = with_normal_align
self.with_vertex_colors = with_vertex_colors
self.uuid = uuid.uuid1()
log("matrices..", 1)
self.calc_matrices()
log("mesh data..", 1)
self.calc_mesh()
log("make mesh..", 1)
self.make_mesh()
if(self.with_vertex_colors):
log("make colors..", 1)
self.make_colors()
log("done.", 1)
def calc_matrices(self):
def rotation_to(a, b):
# http://stackoverflow.com/questions/1171849/finding-quaternion-representing-the-rotation-from-one-vector-to-another
# https://github.com/toji/gl-matrix/blob/f0583ef53e94bc7e78b78c8a24f09ed5e2f7a20c/src/gl-matrix/quat.js#L54
a = a.normalized()
b = b.normalized()
q = Quaternion()
tmpvec3 = Vector()
xUnitVec3 = Vector((1, 0, 0))
yUnitVec3 = Vector((0, 1, 0))
dot = a.dot(b)
if(dot < -0.999999):
tmpvec3 = xUnitVec3.cross(a)
if(tmpvec3.length < 0.000001):
tmpvec3 = yUnitVec3.cross(a)
tmpvec3.normalize()
q = Quaternion(tmpvec3, math.pi)
elif(dot > 0.999999):
q.x = 0
q.y = 0
q.z = 0
q.w = 1
else:
tmpvec3 = a.cross(b)
q.x = tmpvec3[0]
q.y = tmpvec3[1]
q.z = tmpvec3[2]
q.w = 1 + dot
q.normalize()
return q
_, _, osv = self.matrix.decompose()
osm = Matrix(((osv.x, 0.0, 0.0, 0.0), (0.0, osv.y, 0.0, 0.0), (0.0, 0.0, osv.z, 0.0), (0.0, 0.0, 0.0, 1.0))).inverted()
vs = self.vs
ns = self.ns
s = self.size
with_normal_align = self.with_normal_align
matrices = np.zeros((len(vs), 4, 4), dtype=np.float, )
for i, co in enumerate(vs):
no = ns[i]
ml = Matrix.Translation(co).to_4x4()
if(with_normal_align):
q = rotation_to(Vector((0, 0, 1)), Vector(no))
mr = q.to_matrix().to_4x4()
else:
mr = Matrix.Rotation(0.0, 4, 'Z')
ms = Matrix(((s, 0.0, 0.0, 0.0), (0.0, s, 0.0, 0.0), (0.0, 0.0, s, 0.0), (0.0, 0.0, 0.0, 1.0)))
m = ml @ mr @ ms @ osm
matrices[i] = np.array(m, dtype=np.float, )
self.matrices = matrices
def calc_mesh(self):
matrices = self.matrices
gv, _, gf = self.generator.generate()
me = bpy.data.meshes.new('tmp-{}'.format(self.uuid))
me.from_pydata(gv, [], gf)
bm = bmesh.new()
bm.from_mesh(me)
bmesh.ops.triangulate(bm, faces=bm.faces)
bm.to_mesh(me)
bm.free()
gv = np.zeros((len(me.vertices) * 3), dtype=np.float, )
me.vertices.foreach_get("co", gv, )
gv.shape = (len(me.vertices), 3, )
gf = np.zeros((len(me.polygons) * 3), dtype=np.int, )
me.polygons.foreach_get("vertices", gf, )
gf.shape = (len(me.polygons), 3, )
self.g_vs_chunk_length = len(gv)
self.g_fs_chunk_length = len(gf)
zgv = gv[:]
zgv.shape = (-1, )
vs = np.zeros((len(matrices) * len(gv) * 3), dtype=np.float, )
fs = np.zeros((len(matrices) * len(gf) * 3), dtype=np.int, )
cos = np.zeros((len(me.vertices) * 3), dtype=np.float, )
fis = np.zeros((len(me.polygons) * 3), dtype=np.int, )
for i, m in enumerate(matrices):
# doesn't work when passing ndarray directly
me.transform(Matrix(m))
me.vertices.foreach_get("co", cos)
vs[i * len(cos):(i * len(cos)) + len(cos)] = cos
me.polygons.foreach_get("vertices", fis, )
fis += (i * len(me.vertices), )
fs[i * len(fis):(i * len(fis)) + len(fis)] = fis
me.vertices.foreach_set("co", zgv)
self.g_vs = vs
self.g_fs = fs
bpy.data.meshes.remove(me)
def make_mesh(self):
me = bpy.data.meshes.new(self.name)
# NOTE: remember that in future: from_pydata does NOT accept numpy arrays, https://developer.blender.org/T51585
# NOTE: so passing ndarray.tolist() to from_pydata is VERY slow, so recreate interesting bits from from_pydata implementation without using itertools
vertices = self.g_vs
faces = self.g_fs
vl = int(len(vertices) / 3)
fl = int(len(faces) / 3)
me.vertices.add(vl)
me.loops.add(fl * 3)
me.polygons.add(fl)
face_lengths = np.full(fl, 3, dtype=np.int, )
loop_starts = np.arange(0, fl * 3, 3, dtype=np.int, )
me.vertices.foreach_set("co", vertices)
me.polygons.foreach_set("loop_total", face_lengths)
me.polygons.foreach_set("loop_start", loop_starts)
me.polygons.foreach_set("vertices", faces)
me.validate()
so = bpy.context.scene.objects
for i in so:
i.select_set(False)
o = bpy.data.objects.new(self.name, me)
view_layer = bpy.context.view_layer
collection = view_layer.active_layer_collection.collection
collection.objects.link(o)
o.select_set(True)
view_layer.objects.active = o
o.matrix_world = self.matrix
self.mesh = me
self.object = o
def make_colors(self):
fl = self.g_fs_chunk_length
me = self.mesh
cs = self.cs
indexes = np.indices((len(cs), ), dtype=np.int, )
cols = np.take(cs, indexes, axis=0, )
cols = cols.repeat(fl * 3, axis=1, )
cols.shape = (-1, )
vc = me.vertex_colors.new()
vc.data.foreach_set("color", cols)
class PCInstancer():
def __init__(self, o, mesh_size, base_sphere_subdivisions, ):
log("{}:".format(self.__class__.__name__), 0, )
_t = time.time()
base_sphere_radius = mesh_size / 2
# make uv layout of neatly packed triangles to bake vertex colors
log("calculating uv layout..", 1)
num_tri = len(o.data.polygons)
num_sq = math.ceil(num_tri / 4)
sq_per_uv_side = math.ceil(math.sqrt(num_sq))
sq_size = 1 / sq_per_uv_side
bm = bmesh.new()
bm.from_mesh(o.data)
uv_layer = bm.loops.layers.uv.new("PCParticlesUVMap")
def tri_uv(i, x, y, q):
# *---------------*
# | \ 3 / |
# | \ / |
# | 4 * 2 |
# | / \ |
# | / 1 \ |
# *---------------*
# 1 0.0,0.0 1.0,0.0 0.5,0.5
# 2 1.0,0.0 1.0,1.0 0.5,0.5
# 3 1.0,1.0 0.0,1.0 0.5,0.5
# 4 0.0,1.0 0.0,0.0 0.5,0.5
if(i == 0):
return ((x + (0.0 * q), y + (0.0 * q), ),
(x + (1.0 * q), y + (0.0 * q), ),
(x + (0.5 * q), y + (0.5 * q), ), )
elif(i == 1):
return ((x + (1.0 * q), y + (0.0 * q), ),
(x + (1.0 * q), y + (1.0 * q), ),
(x + (0.5 * q), y + (0.5 * q), ), )
elif(i == 2):
return ((x + (1.0 * q), y + (1.0 * q), ),
(x + (0.0 * q), y + (1.0 * q), ),
(x + (0.5 * q), y + (0.5 * q), ), )
elif(i == 3):
return ((x + (0.0 * q), y + (1.0 * q), ),
(x + (0.0 * q), y + (0.0 * q), ),
(x + (0.5 * q), y + (0.5 * q), ), )
else:
raise Exception("You're not supposed to do that..")
sq_c = 0
xsqn = 0
ysqn = 0
for face in bm.faces:
co = tri_uv(sq_c, xsqn * sq_size, ysqn * sq_size, sq_size)
coi = 0
for loop in face.loops:
loop[uv_layer].uv = co[coi]
coi += 1
sq_c += 1
if(sq_c == 4):
sq_c = 0
xsqn += 1
if(xsqn == sq_per_uv_side):
xsqn = 0
ysqn += 1
bm.to_mesh(o.data)
bm.free()
# bake vertex colors
log("baking vertex colors..", 1)
_engine = bpy.context.scene.render.engine
bpy.context.scene.render.engine = 'CYCLES'
tex_size = sq_per_uv_side * 8
img = bpy.data.images.new("PCParticlesBakedColors", tex_size, tex_size, )
mat = bpy.data.materials.new('PCParticlesBakeMaterial')
o.data.materials.append(mat)
mat.use_nodes = True
# remove all nodes
nodes = mat.node_tree.nodes
for node in nodes:
nodes.remove(node)
# make new nodes
links = mat.node_tree.links
node_attr = nodes.new(type='ShaderNodeAttribute')
if(o.data.vertex_colors.active is not None):
node_attr.attribute_name = o.data.vertex_colors.active.name
node_diff = nodes.new(type='ShaderNodeBsdfDiffuse')
link = links.new(node_attr.outputs[0], node_diff.inputs[0])
node_output = nodes.new(type='ShaderNodeOutputMaterial')
link = links.new(node_diff.outputs[0], node_output.inputs[0])
node_tcoord = nodes.new(type='ShaderNodeTexCoord')
node_tex = nodes.new(type='ShaderNodeTexImage')
node_tex.image = img
link = links.new(node_tcoord.outputs[2], node_tex.inputs[0])
# set image texture selected and active
node_tex.select = True
nodes.active = node_tex
# do the baking
scene = bpy.context.scene
_bake_type = scene.cycles.bake_type
scene.cycles.bake_type = 'DIFFUSE'
_samples = scene.cycles.samples
scene.cycles.samples = 32
bake = scene.render.bake
_use_pass_direct = bake.use_pass_direct
_use_pass_indirect = bake.use_pass_indirect
_use_pass_color = bake.use_pass_color
_use_pass_color = bake.use_pass_color
bake.use_pass_direct = False
bake.use_pass_indirect = False
bake.use_pass_color = False
bake.use_pass_color = True
_margin = bake.margin
bake.margin = 0
bpy.ops.object.bake(type='DIFFUSE', )
# cleanup, return original values to all changed bake settings
scene.cycles.bake_type = _bake_type
scene.cycles.samples = _samples
bake.use_pass_direct = _use_pass_direct
bake.use_pass_indirect = _use_pass_indirect
bake.use_pass_color = _use_pass_color
bake.use_pass_color = _use_pass_color
bake.margin = _margin
bpy.context.scene.render.engine = _engine
# make instance
log("making ico sphere instance mesh with material..", 1)
bpy.ops.mesh.primitive_ico_sphere_add(subdivisions=base_sphere_subdivisions, radius=base_sphere_radius, location=(0, 0, 0), )
sphere = bpy.context.active_object
sphere.parent = o
# make material for sphere instances
mat = bpy.data.materials.new('PCParticlesMaterial')
sphere.data.materials.append(mat)
mat.use_nodes = True
nodes = mat.node_tree.nodes
for node in nodes:
nodes.remove(node)
links = mat.node_tree.links
node_tcoord = nodes.new(type='ShaderNodeTexCoord')
node_tcoord.from_instancer = True
node_tex = nodes.new(type='ShaderNodeTexImage')
node_tex.image = img
link = links.new(node_tcoord.outputs[2], node_tex.inputs[0])
node_diff = nodes.new(type='ShaderNodeBsdfDiffuse')
link = links.new(node_tex.outputs[0], node_diff.inputs[0])
node_output = nodes.new(type='ShaderNodeOutputMaterial')
link = links.new(node_diff.outputs[0], node_output.inputs[0])
# make instancer
o.instance_type = 'FACES'
o.show_instancer_for_render = False
_d = datetime.timedelta(seconds=time.time() - _t)
log("completed in {}.".format(_d), 1)
class PCParticles():
def __init__(self, o, mesh_size, base_sphere_subdivisions, ):
log("{}:".format(self.__class__.__name__), 0, )
_t = time.time()
base_sphere_radius = mesh_size / 2
# make uv layout of neatly packed triangles to bake vertex colors
log("calculating uv layout..", 1)
num_tri = len(o.data.polygons)
num_sq = math.ceil(num_tri / 4)
sq_per_uv_side = math.ceil(math.sqrt(num_sq))
sq_size = 1 / sq_per_uv_side
bm = bmesh.new()
bm.from_mesh(o.data)
uv_layer = bm.loops.layers.uv.new("PCParticlesUVMap")
def tri_uv(i, x, y, q):
# *---------------*
# | \ 3 / |
# | \ / |
# | 4 * 2 |
# | / \ |
# | / 1 \ |
# *---------------*
# 1 0.0,0.0 1.0,0.0 0.5,0.5
# 2 1.0,0.0 1.0,1.0 0.5,0.5
# 3 1.0,1.0 0.0,1.0 0.5,0.5
# 4 0.0,1.0 0.0,0.0 0.5,0.5
if(i == 0):
return ((x + (0.0 * q), y + (0.0 * q), ),
(x + (1.0 * q), y + (0.0 * q), ),
(x + (0.5 * q), y + (0.5 * q), ), )
elif(i == 1):
return ((x + (1.0 * q), y + (0.0 * q), ),
(x + (1.0 * q), y + (1.0 * q), ),
(x + (0.5 * q), y + (0.5 * q), ), )
elif(i == 2):
return ((x + (1.0 * q), y + (1.0 * q), ),
(x + (0.0 * q), y + (1.0 * q), ),
(x + (0.5 * q), y + (0.5 * q), ), )
elif(i == 3):
return ((x + (0.0 * q), y + (1.0 * q), ),
(x + (0.0 * q), y + (0.0 * q), ),
(x + (0.5 * q), y + (0.5 * q), ), )
else:
raise Exception("You're not supposed to do that..")
sq_c = 0
xsqn = 0
ysqn = 0
for face in bm.faces:
co = tri_uv(sq_c, xsqn * sq_size, ysqn * sq_size, sq_size)
coi = 0
for loop in face.loops:
loop[uv_layer].uv = co[coi]
coi += 1
sq_c += 1
if(sq_c == 4):
sq_c = 0
xsqn += 1
if(xsqn == sq_per_uv_side):
xsqn = 0
ysqn += 1
bm.to_mesh(o.data)
bm.free()
# bake vertex colors
log("baking vertex colors..", 1)
_engine = bpy.context.scene.render.engine
bpy.context.scene.render.engine = 'CYCLES'
tex_size = sq_per_uv_side * 8
img = bpy.data.images.new("PCParticlesBakedColors", tex_size, tex_size, )
mat = bpy.data.materials.new('PCParticlesBakeMaterial')
o.data.materials.append(mat)
mat.use_nodes = True
# remove all nodes
nodes = mat.node_tree.nodes
for node in nodes:
nodes.remove(node)
# make new nodes
links = mat.node_tree.links
node_attr = nodes.new(type='ShaderNodeAttribute')
if(o.data.vertex_colors.active is not None):
node_attr.attribute_name = o.data.vertex_colors.active.name
node_diff = nodes.new(type='ShaderNodeBsdfDiffuse')
link = links.new(node_attr.outputs[0], node_diff.inputs[0])
node_output = nodes.new(type='ShaderNodeOutputMaterial')
link = links.new(node_diff.outputs[0], node_output.inputs[0])
node_tcoord = nodes.new(type='ShaderNodeTexCoord')
node_tex = nodes.new(type='ShaderNodeTexImage')
node_tex.image = img
link = links.new(node_tcoord.outputs[2], node_tex.inputs[0])
# set image texture selected and active
node_tex.select = True
nodes.active = node_tex
# do the baking
scene = bpy.context.scene
_bake_type = scene.cycles.bake_type
scene.cycles.bake_type = 'DIFFUSE'
_samples = scene.cycles.samples
scene.cycles.samples = 32
bake = scene.render.bake
_use_pass_direct = bake.use_pass_direct
_use_pass_indirect = bake.use_pass_indirect
_use_pass_color = bake.use_pass_color
_use_pass_color = bake.use_pass_color
bake.use_pass_direct = False
bake.use_pass_indirect = False
bake.use_pass_color = False
bake.use_pass_color = True
_margin = bake.margin
bake.margin = 0
bpy.ops.object.bake(type='DIFFUSE', )
# cleanup, return original values to all changed bake settings
scene.cycles.bake_type = _bake_type
scene.cycles.samples = _samples
bake.use_pass_direct = _use_pass_direct
bake.use_pass_indirect = _use_pass_indirect
bake.use_pass_color = _use_pass_color
bake.use_pass_color = _use_pass_color
bake.margin = _margin
bpy.context.scene.render.engine = _engine
# make particles
log("setting up particle system..", 1)
pmod = o.modifiers.new('PCParticleSystem', type='PARTICLE_SYSTEM', )
settings = pmod.particle_system.settings
settings.count = num_tri
settings.frame_end = 1
settings.normal_factor = 0
settings.emit_from = 'FACE'
settings.use_emit_random = False
settings.use_even_distribution = False
settings.userjit = 1
settings.render_type = 'OBJECT'
settings.particle_size = 1
settings.display_method = 'DOT'
settings.display_size = base_sphere_radius
settings.physics_type = 'NO'
o.show_instancer_for_render = False
# make instance
log("making ico sphere instance mesh with material..", 1)
bpy.ops.mesh.primitive_ico_sphere_add(subdivisions=base_sphere_subdivisions, radius=base_sphere_radius, location=(0, 0, 0), )
sphere = bpy.context.active_object
sphere.parent = o
# make material for sphere instances
mat = bpy.data.materials.new('PCParticlesMaterial')
sphere.data.materials.append(mat)
mat.use_nodes = True
nodes = mat.node_tree.nodes
for node in nodes:
nodes.remove(node)
links = mat.node_tree.links
node_tcoord = nodes.new(type='ShaderNodeTexCoord')
node_tcoord.from_instancer = True
node_tex = nodes.new(type='ShaderNodeTexImage')
node_tex.image = img
link = links.new(node_tcoord.outputs[2], node_tex.inputs[0])
node_diff = nodes.new(type='ShaderNodeBsdfDiffuse')
link = links.new(node_tex.outputs[0], node_diff.inputs[0])
node_output = nodes.new(type='ShaderNodeOutputMaterial')
link = links.new(node_diff.outputs[0], node_output.inputs[0])
# assign sphere to particles
settings.instance_object = sphere
_d = datetime.timedelta(seconds=time.time() - _t)
log("completed in {}.".format(_d), 1)
class BinPlyPointCloudReader():
def __init__(self, path, ):
log("{}:".format(self.__class__.__name__), 0)
if(os.path.exists(path) is False or os.path.isdir(path) is True):
raise OSError("did you point me to an imaginary file? ('{0}')".format(path))
self.path = path
self._stream = open(self.path, "rb")
log("reading header..", 1)
self._header()
log("reading data:", 1)
self._data_np()
self._stream.close()
self.points = self.data['vertex']
log("done.", 1)
def _header(self):
raw = []
h = []
for l in self._stream:
raw.append(l)
t = l.decode('ascii')
h.append(t.rstrip())
if(t == "end_header\n"):
break
self._header_length = sum([len(i) for i in raw])
_supported_version = '1.0'
_byte_order = {'binary_little_endian': '<',
'binary_big_endian': '>',
'ascii': None, }
_types = {'char': 'c',
'uchar': 'B',
'short': 'h',
'ushort': 'H',
'int': 'i',
'uint': 'I',
'float': 'f',
'double': 'd', }
_ply = False
_format = None
_endianness = None
_version = None
_comments = []
_elements = []
_current_element = None
for i, l in enumerate(h):
if(i == 0 and l == 'ply'):
_ply = True
continue
if(l.startswith('format ')):
_format = l[7:]
a = _format.split(' ')
_endianness = _byte_order[a[0]]
_version = a[1]
if(l.startswith('comment ')):
_comments.append(l[8:])
if(l.startswith('element ')):
a = l.split(' ')
_elements.append({'name': a[1], 'properties': [], 'count': int(a[2]), })
_current_element = len(_elements) - 1
if(l.startswith('property ')):
a = l[9:].split(' ')
if(a[0] != 'list'):
_elements[_current_element]['properties'].append((a[1], _types[a[0]]))
else: