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render.py
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render.py
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#www.stuffaboutcode.com
#Raspberry Pi, Minecraft - Create 3D Model from Obj file
# Version 2 - draws complete faces rather than wireframes and uses materials
"""
Copyright (c) Martin O'Hanlon and Alexander Pruss
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
"""
from __future__ import print_function
from zipfile import ZipFile
import sys
try:
import urllib.request as urllib_request
except:
import urllib2 as urllib_request
import struct
from collections import OrderedDict
import mcpi.minecraft as minecraft
from copy import copy
from mcpi.block import *
import mcpi.settings as settings
#import time, so delays can be used
import time
#import datetime, to get the time!
import datetime
import gzip
import colors
from drawing import *
import math
import os
import re
IDENTITY44 = ((1.,0.,0.,0.),(0.,1.,0.,0.),(0.,0.,1.,0.),(0.,0.,0.,1.))
ZIP_READ_TEXT = "r" if sys.version_info[0] < 3 else "rt"
def determinant44(m):
inv00 = m[1][1] * m[2][2] * m[3][3] - m[1][1] * m[3][2] * m[2][3] - m[1][2] * m[2][1] * m[3][3] + m[1][2] * m[3][1] * m[2][3] + m[1][3] * m[2][1] * m[3][2] - m[1][3] * m[3][1] * m[2][2]
inv01 = -m[0][1] * m[2][2] * m[3][3] + m[0][1] * m[3][2] * m[2][3] + m[0][2] * m[2][1] * m[3][3] - m[0][2] * m[3][1] * m[2][3] - m[0][3] * m[2][1] * m[3][2] + m[0][3] * m[3][1] * m[2][2]
inv02 = m[0][1] * m[1][2] * m[3][3] - m[0][1] * m[3][2] * m[1][3] - m[0][2] * m[1][1] * m[3][3] + m[0][2] * m[3][1] * m[1][3] + m[0][3] * m[1][1] * m[3][2] - m[0][3] * m[3][1] * m[1][2]
inv03 = -m[0][1] * m[1][2] * m[2][3] + m[0][1] * m[2][2] * m[1][3] + m[0][2] * m[1][1] * m[2][3] - m[0][2] * m[2][1] * m[1][3] - m[0][3] * m[1][1] * m[2][2] + m[0][3] * m[2][1] * m[1][2]
return m[0][0] * inv00 + m[1][0] * inv01 + m[2][0] * inv02 + m[3][0] * inv03
def invertMatrix44(m):
inv = [[0 for i in range(4)] for j in range(4)]
inv[0][0] = m[1][1] * m[2][2] * m[3][3] - m[1][1] * m[3][2] * m[2][3] - m[1][2] * m[2][1] * m[3][3] + m[1][2] * m[3][1] * m[2][3] + m[1][3] * m[2][1] * m[3][2] - m[1][3] * m[3][1] * m[2][2]
inv[0][1] = -m[0][1] * m[2][2] * m[3][3] + m[0][1] * m[3][2] * m[2][3] + m[0][2] * m[2][1] * m[3][3] - m[0][2] * m[3][1] * m[2][3] - m[0][3] * m[2][1] * m[3][2] + m[0][3] * m[3][1] * m[2][2]
inv[0][2] = m[0][1] * m[1][2] * m[3][3] - m[0][1] * m[3][2] * m[1][3] - m[0][2] * m[1][1] * m[3][3] + m[0][2] * m[3][1] * m[1][3] + m[0][3] * m[1][1] * m[3][2] - m[0][3] * m[3][1] * m[1][2]
inv[0][3] = -m[0][1] * m[1][2] * m[2][3] + m[0][1] * m[2][2] * m[1][3] + m[0][2] * m[1][1] * m[2][3] - m[0][2] * m[2][1] * m[1][3] - m[0][3] * m[1][1] * m[2][2] + m[0][3] * m[2][1] * m[1][2]
inv[1][0] = -m[1][0] * m[2][2] * m[3][3] + m[1][0] * m[3][2] * m[2][3] + m[1][2] * m[2][0] * m[3][3] - m[1][2] * m[3][0] * m[2][3] - m[1][3] * m[2][0] * m[3][2] + m[1][3] * m[3][0] * m[2][2]
inv[1][1] = m[0][0] * m[2][2] * m[3][3] - m[0][0] * m[3][2] * m[2][3] - m[0][2] * m[2][0] * m[3][3] + m[0][2] * m[3][0] * m[2][3] + m[0][3] * m[2][0] * m[3][2] - m[0][3] * m[3][0] * m[2][2]
inv[1][2] = -m[0][0] * m[1][2] * m[3][3] + m[0][0] * m[3][2] * m[1][3] + m[0][2] * m[1][0] * m[3][3] - m[0][2] * m[3][0] * m[1][3] - m[0][3] * m[1][0] * m[3][2] + m[0][3] * m[3][0] * m[1][2]
inv[1][3] = m[0][0] * m[1][2] * m[2][3] - m[0][0] * m[2][2] * m[1][3] - m[0][2] * m[1][0] * m[2][3] + m[0][2] * m[2][0] * m[1][3] + m[0][3] * m[1][0] * m[2][2] - m[0][3] * m[2][0] * m[1][2]
inv[2][0] = m[1][0] * m[2][1] * m[3][3] - m[1][0] * m[3][1] * m[2][3] - m[1][1] * m[2][0] * m[3][3] + m[1][1] * m[3][0] * m[2][3] + m[1][3] * m[2][0] * m[3][1] - m[1][3] * m[3][0] * m[2][1]
inv[2][1] = -m[0][0] * m[2][1] * m[3][3] + m[0][0] * m[3][1] * m[2][3] + m[0][1] * m[2][0] * m[3][3] - m[0][1] * m[3][0] * m[2][3] - m[0][3] * m[2][0] * m[3][1] + m[0][3] * m[3][0] * m[2][1]
inv[2][2] = m[0][0] * m[1][1] * m[3][3] - m[0][0] * m[3][1] * m[1][3] - m[0][1] * m[1][0] * m[3][3] + m[0][1] * m[3][0] * m[1][3] + m[0][3] * m[1][0] * m[3][1] - m[0][3] * m[3][0] * m[1][1]
inv[2][3] = -m[0][0] * m[1][1] * m[2][3] + m[0][0] * m[2][1] * m[1][3] + m[0][1] * m[1][0] * m[2][3] - m[0][1] * m[2][0] * m[1][3] - m[0][3] * m[1][0] * m[2][1] + m[0][3] * m[2][0] * m[1][1]
inv[3][0] = -m[1][0] * m[2][1] * m[3][2] + m[1][0] * m[3][1] * m[2][2] + m[1][1] * m[2][0] * m[3][2] - m[1][1] * m[3][0] * m[2][2] - m[1][2] * m[2][0] * m[3][1] + m[1][2] * m[3][0] * m[2][1]
inv[3][1] = m[0][0] * m[2][1] * m[3][2] - m[0][0] * m[3][1] * m[2][2] - m[0][1] * m[2][0] * m[3][2] + m[0][1] * m[3][0] * m[2][2] + m[0][2] * m[2][0] * m[3][1] - m[0][2] * m[3][0] * m[2][1]
inv[3][2] = -m[0][0] * m[1][1] * m[3][2] + m[0][0] * m[3][1] * m[1][2] + m[0][1] * m[1][0] * m[3][2] - m[0][1] * m[3][0] * m[1][2] - m[0][2] * m[1][0] * m[3][1] + m[0][2] * m[3][0] * m[1][1]
inv[3][3] = m[0][0] * m[1][1] * m[2][2] - m[0][0] * m[2][1] * m[1][2] - m[0][1] * m[1][0] * m[2][2] + m[0][1] * m[2][0] * m[1][2] + m[0][2] * m[1][0] * m[2][1] - m[0][2] * m[2][0] * m[1][1]
invdet = 1. / (m[0][0] * inv[0][0] + m[1][0] * inv[0][1] + m[2][0] * inv[0][2] + m[3][0] * inv[0][3])
for i in range(4):
for j in range(4):
inv[i][j] = invdet * inv[i][j]
return inv
def mulMatrix44(a,b):
return tuple(tuple(a[i][0] * b[0][j] + a[i][1] * b[1][j] + a[i][2] * b[2][j] + a[i][3] * b[3][j] for j in range(4)) for i in range(4))
def applyMatrix44(a,v):
if a is None:
return v
return V3(a[i][0] * v[0] + a[i][1] * v[1] + a[i][2] * v[2] + a[i][3] for i in range(3))
def translMatrix44(v):
return tuple(tuple((IDENTITY44[i][j] if j < 3 or i == 3 else v[i]) for j in range(4)) for i in range(4))
def safeEval(p):
if '__' in p:
raise ValueError("Insecure entry")
return eval(p)
class MeshFile(object):
def __init__(self):
self.vertices = []
self.faces = []
self.materialIndexDict = {None:0}
self.defaultMaterialBlockDict = {}
self.materials = []
self.objectData = {}
self.objects = []
class MeshSTL(MeshFile):
def __init__(self, filename, myopen=open, swapYZ=False):
super(MeshSTL,self).__init__()
with myopen(filename, "rb") as f:
header = f.read(80)
assert len(header) == 80
vertexCount = 0
lastAttribute = 0
curMaterial = 0
lastAttribute = None
materialCount = 1
self.materials.append("default")
if header.startswith(b"solid"):
vertexDict = {}
triangle = None
for line in f:
line = line.strip()
if line.startswith(b'endfacet'):
if triangle is not None:
self.faces.append((curMaterial, tuple(triangle)))
triangle = None
elif line.startswith(b'facet'):
triangle = []
elif triangle is not None and line.startswith(b'vertex'):
v = tuple(float(x) for x in line.split()[1:4])
if swapYZ:
v = (v[0],v[2],-v[1])
if v in vertexDict:
triangle.append(vertexDict[v])
else:
n = len(vertexDict)
vertexDict[v] = n
triangle.append(n)
self.vertices.append(V3(v))
if self.faces:
return
else:
f.seek(5)
numTriangles = struct.unpack("<I", f.read(4))[0]
for i in range(numTriangles):
assert len(f.read(12))==12 # skip normal
for i in range(3):
v = struct.unpack("<3f", f.read(12))
if swapYZ:
v = (v[0],v[2],-v[1])
self.vertices.append(V3(v))
attribute = struct.unpack("<H", f.read(2))[0]
if attribute is not lastAttribute:
lastAttribute = attribute
if attribute & 0x8000:
r = int(( ( attribute >> 10 ) & 0x1F ) / 31. * 255)
g = int((( attribute >> 5 ) & 0x1F ) / 31. * 255)
b = int( ( attribute & 0x1F ) / 31. * 255)
materialName = "stl_{:02X}{:02X}{:02X}".format(r,g,b)
else:
materialName = "default"
if materialName not in self.materials:
self.materials.append(materialName)
curMaterial = materialCount
materialCount += 1
self.defaultMaterialBlockDict[materialName] = colors.rgbToBlock((r,g,b))[0]
else:
curMaterial = self.materials.index(materialName)
self.faces.append((curMaterial,(vertexCount,vertexCount+1,vertexCount+2)))
vertexCount += 3
assert self.vertices
assert self.faces
class MeshPLY(MeshFile):
"""
Currently doesn't support materials or binary data or any data. :-)
"""
def __init__(self, filename, myopen=open, swapYZ=False):
super(MeshPLY,self).__init__()
with myopen(filename, ZIP_READ_TEXT) as f:
assert f.readline().strip() == "ply"
assert f.readline().strip().startswith("format ascii")
elementCounts = []
while True:
line = f.readline().strip()
if line == "end_header":
break
args = re.split("\\s+",line)
if len(args) >= 3 and args[0] == 'element':
elementCounts.append((args[1],int(args[2])))
assert len(elementCounts) >= 2
for element,count in elementCounts:
for i in range(count):
line = f.readline().strip()
if element == 'vertex':
args = re.split("\\s+",line)
if swapYZ:
v = V3(float(args[0]),float(args[2]),-float(args[1]))
else:
v = V3(float(args[0]),float(args[1]),float(args[2]))
self.vertices.append(v)
elif element == 'face':
args = re.split("\\s+",line)
count = int(args.pop(0))
v = tuple(int(args[j]) for j in range(count))
self.faces.append((0,v))
assert self.vertices
assert self.faces
class Mesh3DS(MeshFile):
MAIN3DS = 0x4D4D
EDIT3DS = 0x3D3D
KEYF3DS = 0xB000
KEYF_OBJDES = 0xB002
KEYF_OBJHIERARCH = 0xB010
KEYF_PIVOT = 0xB013
EDIT_OBJECT = 0x4000
OBJ_TRIMESH = 0x4100
TRI_VERTEXL = 0x4110
TRI_FACEL1 = 0x4120
TRI_LOCAL = 0x4160
TRI_MATERIAL = 0x4130
def __init__(self, filename, myopen=open, swapYZ=False):
super(Mesh3DS,self).__init__()
self.swapYZ = swapYZ
if int(sys.version[0]) >= 3:
self.readAsciiz = self.readAsciiz_python3
with myopen(filename, "rb") as self.file:
id,lengthRemaining = self.readChunkHeader()
lengthRemaining -= 6
if id != Mesh3DS.MAIN3DS:
raise IOError("Cannot find main chunk")
while 0 < lengthRemaining:
id,chunkLength = self.readChunkHeader()
lengthRemaining -= 6
if id == Mesh3DS.EDIT3DS:
self.handle_EDIT3DS(chunkLength - 6)
lengthRemaining -= chunkLength - 6
elif id == Mesh3DS.KEYF3DS:
self.handle_KEYF3DS(chunkLength - 6)
lengthRemaining -= chunkLength - 6
else:
self.skip(chunkLength - 6)
lengthRemaining -= chunkLength - 6
self.processObjects()
if not self.faces:
raise IOError("No faces found")
def processObjects(self):
i = 0
for (name,parent,pivot) in self.objects:
try:
(object_vertices,object_faces,object_material_data,object_matrix) = self.objectData[name]
except KeyError:
continue
if not object_vertices:
continue
if determinant44(object_matrix) < 0:
transform = mulMatrix44(object_matrix, mulMatrix44(((-1,0,0,0),(0,1,0,0),(0,0,1,0),(0,0,0,1)), invertMatrix44(object_matrix)))
else:
transform = None
if pivot != V3(0,0,0):
delta = applyMatrix(object_matrix, -pivot)
else:
delta = None
firstObjectVertex = len(self.vertices)
for v in object_vertices:
if transform:
v = applyMatrix44(transform, v)
if delta:
v = v + delta
if self.swapYZ:
self.vertices.append(V3(v[0],v[2],-v[1]))
else:
self.vertices.append(v)
for (faceIndex,face) in enumerate(object_faces):
material = None
for (name,faces) in object_material_data:
if faceIndex in faces:
material = name
break
try:
materialIndex = self.materialIndexDict[material]
except KeyError:
materialIndex = len(self.materials)
self.materials.append(material)
self.materialIndexDict[material] = materialIndex
self.faces.append((materialIndex, tuple(v + firstObjectVertex for v in face)))
def readChunkHeader(self):
return struct.unpack("<HL", self.file.read(6))
def skip(self,length):
if length:
self.file.seek(length,1)
def readAsciiz(self,lengthRemaining):
name = ""
while lengthRemaining > 0:
byte = self.file.read(1)
lengthRemaining -= 1
if ord(byte) == 0:
return lengthRemaining, name
name += byte
raise IOError("Name overflowing chunk")
def readAsciiz_python3(self,lengthRemaining):
name = ""
while lengthRemaining > 0:
byte = self.file.read(1)
lengthRemaining -= 1
if ord(byte) == 0:
return lengthRemaining, name
name += byte.decode("cp1252")
raise IOError("Name overflowing chunk")
def handle_EDIT3DS(self,lengthRemaining):
while lengthRemaining > 0:
id,chunkLength = self.readChunkHeader()
lengthRemaining -= 6
if id == Mesh3DS.EDIT_OBJECT:
self.handle_EDIT_OBJECT(chunkLength - 6)
lengthRemaining -= chunkLength - 6
else:
self.skip(chunkLength - 6)
lengthRemaining -= chunkLength - 6
def handle_KEYF3DS(self,lengthRemaining):
while lengthRemaining > 0:
id,chunkLength = self.readChunkHeader()
lengthRemaining -= 6
if id == Mesh3DS.KEYF_OBJDES:
self.handle_KEYF_OBJDES(chunkLength - 6)
lengthRemaining -= chunkLength - 6
else:
self.skip(chunkLength - 6)
lengthRemaining -= chunkLength - 6
def handle_KEYF_OBJDES(self,lengthRemaining):
self.object_name = None
self.object_pivot = None
self.object_parent = None
while lengthRemaining > 0:
id,chunkLength = self.readChunkHeader()
lengthRemaining -= 6
if id == Mesh3DS.KEYF_OBJHIERARCH:
self.handle_KEYF_OBJHIERARCH(chunkLength - 6)
lengthRemaining -= chunkLength - 6
elif id == Mesh3DS.KEYF_PIVOT:
self.handle_KEYF_PIVOT(chunkLength - 6)
lengthRemaining -= chunkLength - 6
else:
self.skip(chunkLength - 6)
lengthRemaining -= chunkLength - 6
self.objects.append((self.object_name,self.object_parent,self.object_pivot))
def handle_KEYF_OBJHIERARCH(self,lengthRemaining):
lengthRemaining, self.object_name = self.readAsciiz(lengthRemaining)
self.skip(4)
lengthRemaining -= 4
self.object_parent = struct.unpack("<h", self.file.read(2))[0]
lengthRemaining -= 2
self.skip(lengthRemaining)
def handle_KEYF_PIVOT(self,lengthRemaining):
self.object_pivot = V3(struct.unpack("<fff", self.file.read(3 * 4)))
lengthRemaining -= 3 * 4
self.skip(lengthRemaining)
def handle_EDIT_OBJECT(self,lengthRemaining):
self.object_vertices = []
self.object_faces = []
self.object_material_data = []
self.object_matrix = None
lengthRemaining, self.object_name = self.readAsciiz(lengthRemaining)
while lengthRemaining > 0:
id,chunkLength = self.readChunkHeader()
lengthRemaining -= 6
if id == Mesh3DS.OBJ_TRIMESH:
self.handle_OBJ_TRIMESH(chunkLength - 6)
lengthRemaining -= chunkLength - 6
else:
self.skip(chunkLength - 6)
lengthRemaining -= chunkLength - 6
def handle_OBJ_TRIMESH(self,lengthRemaining):
while lengthRemaining > 0:
id,chunkLength = self.readChunkHeader()
lengthRemaining -= 6
if id == Mesh3DS.TRI_VERTEXL:
self.handle_TRI_VERTEXL(chunkLength - 6)
lengthRemaining -= chunkLength - 6
elif id == Mesh3DS.TRI_FACEL1:
self.handle_TRI_FACEL1(chunkLength - 6)
lengthRemaining -= chunkLength - 6
elif id == Mesh3DS.TRI_LOCAL:
self.handle_TRI_LOCAL(chunkLength - 6)
lengthRemaining -= chunkLength - 6
else:
self.skip(chunkLength - 6)
lengthRemaining -= chunkLength - 6
if self.object_matrix is None:
self.object_matrix = IDENTITY44
self.objectData[self.object_name] = (self.object_vertices,self.object_faces,self.object_material_data, self.object_matrix)
def handle_TRI_VERTEXL(self,lengthRemaining):
count = struct.unpack("<H", self.file.read(2))[0]
lengthRemaining -= 2
for i in range(count):
self.object_vertices.append(V3(struct.unpack("<fff", self.file.read(3 * 4))))
lengthRemaining -= 3 * 4
self.skip(lengthRemaining)
def handle_TRI_FACEL1(self,lengthRemaining):
count = struct.unpack("<H", self.file.read(2))[0]
lengthRemaining -= 2
for i in range(count):
self.object_faces.append(struct.unpack("<HHH", self.file.read(2 * 3)))
lengthRemaining -= 2 * 3
self.skip(2)
lengthRemaining -= 2
while lengthRemaining > 0:
id,chunkLength = self.readChunkHeader()
lengthRemaining -= 6
if id == Mesh3DS.TRI_MATERIAL:
self.handle_TRI_MATERIAL(chunkLength - 6)
lengthRemaining -= chunkLength - 6
else:
self.skip(chunkLength - 6)
lengthRemaining -= chunkLength - 6
def handle_TRI_LOCAL(self,lengthRemaining):
m = [[1,0,0,0], [0,1,0,0], [0,0,1,0], [0,0,0,1]]
for i in range(4):
for j in range(3):
m[j][i] = struct.unpack("<f", self.file.read(4))[0]
lengthRemaining -= 4
self.object_matrix = m
self.skip(lengthRemaining)
def handle_TRI_MATERIAL(self,lengthRemaining):
lengthRemaining,name = self.readAsciiz(lengthRemaining)
name = name.replace(' ', '_') # TODO: handle "A_B" and "A B" collision
count = struct.unpack("<H", self.file.read(2))[0]
lengthRemaining -= 2
faces = set()
for i in range(count):
faces.add(struct.unpack("<H", self.file.read(2))[0])
lengthRemaining -= 2
self.object_material_data.append((name, faces))
self.skip(lengthRemaining)
class Mesh(object):
UNSPECIFIED = None
SUPPORTED_ARCHIVES = set(['gz','zip'])
def __init__(self,infile,minecraft=None,rewrite=True,swapYZ=None,defaultBlock=STONE):
if minecraft is not None:
self.setBlock = minecraft.setBlock
self.message = minecraft.postToChat
else:
self.output = OrderedDict()
def setBlock(v,b):
self.output[v] = b
self.setBlock = setBlock
def message(m):
print(m)
self.message = message
self.rewrite = rewrite
self.url = None
self.urlgz = None
self.urlzip = None
self.swapYZ = swapYZ
self.credits = None
self.size = 100
self.preYaw = 0
self.prePitch = 0
self.preRoll = 0
self.archive = None
self.default = defaultBlock
self.materialBlockDict = {}
self.materialOrderDict = {}
self.baseVertices = []
self.vertices = []
#self.textures = []
#self.normals = []
self.faces = []
self.materials = []
self.materialNames = []
self.haveMaterialArea = False
self.corner1 = None
self.corner2 = None
self.endLineIndex = None
self.specifiedMeshName = None
base,ext = os.path.splitext(infile)
if ext.lower() == '.obj' or ext.lower() == ".3ds" or ext.lower() == ".ply" or ext.lower() == ".stl":
self.meshName = infile
self.controlFile = base + ".txt"
else:
if os.path.isfile(base + ".3ds") or os.path.isfile(base + ".3ds.gz"):
self.meshName = base + ".3ds"
elif os.path.isfile(base + ".ply") or os.path.isfile(base + ".ply.gz"):
self.meshName = base + ".ply"
elif os.path.isfile(base + ".stl") or os.path.isfile(base + ".stl.gz"):
self.meshName = base + ".stl"
else:
self.meshName = base + ".obj"
if ext == '':
self.controlFile = base + ".txt"
else:
self.controlFile = infile
if os.path.isfile(self.controlFile):
with open(self.controlFile) as f:
self.controlFileLines = f.readlines()
dirname = os.path.dirname(self.controlFile)
materialMode = False
for i,line in enumerate(self.controlFileLines):
line = line.strip()
if len(line) == 0 or line[0] == '#':
continue
found = re.match('([^\\s]+) (.*)$', line)
if found:
def getString():
if found.group(2).startswith('"') or found.group(2).startswith("'") or found.group(2).startswith('u"') or found.group(2).startswith("u'"):
return safeEval(found.group(2))
else:
return found.group(2)
token = found.group(1).lower()
if materialMode:
self.materialBlockDict[found.group(1)] = Block.byName(found.group(2),default=self.default)
elif token == "file":
self.specifiedMeshName = getString()
self.meshName = dirname + "/" + self.specifiedMeshName
elif token == "archive":
self.archive = getString()
if self.archive.lower() not in Mesh.SUPPORTED_ARCHIVES:
self.archive = dirname + '/' + self.archive
elif token == "swapyz":
self.swapYZ = bool(safeEval(found.group(2).capitalize()))
elif token == "credits":
self.credits = found.group(2)
elif token == "url":
self.url = found.group(2)
elif token == "urlgz":
self.urlgz = found.group(2)
elif token == "size":
self.size = safeEval(found.group(2))
elif token == "default":
self.default = Block.byName(found.group(2),default=self.default)
elif token == "yaw":
self.preYaw = safeEval(found.group(2))
elif token == "pitch":
self.prePitch = safeEval(found.group(2))
elif token == "roll":
self.preRoll = safeEval(found.group(2))
elif token == "order":
args = re.split("[\\s,]+", found.group(2))
self.materialOrderDict[args[0]] = int(args[1])
elif line.strip().lower() == "materials":
materialMode = True
self.haveMaterialArea = True
elif line.strip().lower() == "end":
self.endLineIndex = i
break
if self.endLineIndex is None:
self.endLineIndex = len(self.controlFileLines)
if self.archive in Mesh.SUPPORTED_ARCHIVES:
self.archive = self.meshName + "." + self.archive
if self.swapYZ is None:
self.swapYZ = self.meshName.lower().endswith(".3ds") or self.meshName.lower().endswith(".stl")
elif rewrite:
if not os.path.isfile(self.meshName):
raise IOError("Cannot find mesh file")
if self.swapYZ is None and (self.meshName.lower().endswith(".3ds") or self.meshName.lower().endswith(".stl")):
self.swapYZ = True
self.message("Creating a default control file")
with open(self.controlFile,"w") as f:
self.controlFileLines = []
self.controlFileLines.append("file " + repr(os.path.basename(self.meshName)) + "\n")
if self.swapYZ:
self.controlFileLines.append("swapyz 1\n")
else:
self.controlFileLines.append("swapyz 0\n")
self.controlFileLines.append("#credits Mesh by ..., copyright (c) ...\n")
self.controlFileLines.append("yaw 0\n")
self.controlFileLines.append("pitch 0\n")
self.controlFileLines.append("roll 0\n")
self.controlFileLines.append("size " + str(self.size) + "\n")
self.controlFileLines.append("default "+str(defaultBlock).replace(" ","")+ "\n")
self.controlFileLines.append("#order material position\n")
self.controlFileLines.append("materials\n")
self.haveMaterialArea = True
self.endLineIndex = len(self.controlFileLines)
self.controlFileLines.append("end\n\n")
self.controlFileLines.append("[Insert any detailed licensing information here]")
for line in self.controlFileLines:
f.write(line)
if settings.isPE:
self.size /= 2
def getFile(self, tryDownload=True):
if self.archive and os.path.isfile(self.archive):
if self.archive.lower().endswith(".gz"):
return self.archive, gzip.open, None
elif self.archive.lower().endswith(".zip"):
z = ZipFile(self.archive)
return self.specifiedMeshName, z.open, z.close
else:
raise IOError("Unsupported archive type")
if os.path.isfile(self.meshName):
return self.meshName, open, None
if os.path.isfile(self.meshName + ".gz"):
return self.meshName + ".gz", gzip.open, None
if tryDownload and (self.url or self.urlgz):
self.message("Downloading mesh")
urlzip = False
if self.urlgz:
url = self.urlgz
outName = self.meshName + ".gz"
elif self.url:
url = self.url
if self.archive:
outName = self.archive
else:
outName = self.meshName
content = urllib_request.urlopen(url).read()
with open(outName + ".tempDownload","wb") as f:
f.write(content)
os.rename(outName + ".tempDownload", outName)
self.message("Downloaded")
return self.getFile()
else:
raise IOError("File not found")
def read(self, rewriteControlFile=None):
if self.swapYZ:
fix = lambda list : V3(list[0], list[2], -list[1])
else:
fix = lambda list : V3(list)
warned = set()
currentMaterialIndex = 0
if self.preYaw != 0 or self.prePitch != 0 or self.preRoll != 0:
matrix = makeMatrix(self.preYaw, self.prePitch, self.preRoll)
else:
matrix = None
name,myopen,closeArchive = self.getFile()
if self.credits:
self.message("Credits: " + self.credits)
mesh = None
if name.endswith(".3ds") or name.endswith(".3ds.gz") or name.endswith(".ply") or name.endswith(".ply.gz") or name.endswith(".stl") or name.endswith(".stl.gz"):
if name.endswith(".3ds") or name.endswith(".3ds.gz"):
MeshFormat = Mesh3DS
elif name.endswith(".ply") or name.endswith(".ply.gz"):
MeshFormat = MeshPLY
else:
MeshFormat = MeshSTL
mesh = MeshFormat(name,myopen=myopen,swapYZ=self.swapYZ)
self.baseVertices = mesh.vertices
self.faces = mesh.faces
self.materialBlocks = []
self.materialOrders = []
for name in mesh.materials:
self.materialOrders.append(self.materialOrderDict.get(name, 0))
self.materialBlocks.append(self.materialBlockDict.get(name,
mesh.defaultMaterialBlockDict.get(name, self.default)))
if name != "default" and name not in self.materialBlockDict and name not in warned:
if name not in mesh.defaultMaterialBlockDict:
self.message("Material " + name + " not defined")
warned.add(name)
if len(self.materialBlocks) == 0:
self.materialBlocks.append(self.default)
else:
self.materialBlocks = [self.default]
self.materialOrders = [0]
materialIndexDict = { Mesh.UNSPECIFIED: 0 }
with myopen(name, ZIP_READ_TEXT) as fh:
for line in fh:
line = line.strip()
if len(line) == 0 or line[0] == '#' : continue
line = re.split('\s+', line)
if line[0] == 'v' :
self.baseVertices.append(applyMatrix(matrix,V3(fix([float(x) for x in line[1:]]))))
#elif line[0] == 'vt' : #tex-coord
# self.textures.append(fix(line[1:]))
#elif line[0] == 'vn' : #normal vector
# self.normals.append(fix(line[1:]))
elif line[0] == 'f' : #face
face = line[1:]
for i in range(0, len(face)) :
# OBJ indexies are 1 based not 0 based hence the -1
# convert indexes to integer
face[i] = int(face[i].split('/')[0]) - 1
# skip texture and normal
# for j in range(0, len(face[i])) :
# if face[i][j] != "":
# face[i][j] = int(face[i][j]) - 1
#prepend the material currently in use to the face
self.faces.append((currentMaterialIndex,face))
elif line[0] == 'usemtl': # material
name = line[1]
try:
currentMaterialIndex = materialIndexDict[name]
except KeyError:
currentMaterialIndex = len(self.materialBlocks)
materialIndexDict[name] = currentMaterialIndex
self.materialOrders.append(self.materialOrderDict.get(name, 0))
self.materialBlocks.append(self.materialBlockDict.get(name, self.default))
if name not in self.materialBlockDict and name not in warned:
self.message("Material " + name + " not defined")
warned.add(name)
if closeArchive:
closeArchive()
if self.rewrite and warned:
try:
self.message("Rewriting control file to include missing materials")
with open(self.controlFile + ".tempFile", "w") as f:
f.write(''.join(self.controlFileLines[:self.endLineIndex]))
if not self.haveMaterialArea:
f.write('\nmaterials\n')
for material in warned:
if mesh is None or material not in mesh.defaultMaterialBlockDict:
f.write(material + ' default\n')
else:
block = mesh.defaultMaterialBlockDict[material]
f.write(material + ' ' + str(block.id) + ' ' + str(block.data) + '\n')
f.write(''.join(self.controlFileLines[self.endLineIndex:]))
try:
os.unlink(self.controlFile + ".bak")
except:
pass
try:
os.rename(self.controlFile, self.controlFile + ".bak")
except:
pass
os.rename(self.controlFile + ".tempFile", self.controlFile)
except Exception as err:
self.message(str(err))
self.message("Couldn't rewrite control file")
def scale(self, bottomCenter, matrix=None):
bottomCenter = V3(bottomCenter)
minimum = [None, None, None]
maximum = [None, None, None]
self.vertices = []
for v in self.baseVertices:
vertex = applyMatrix(matrix,v)
self.vertices.append(vertex)
for i in range(3):
if minimum[i] == None or vertex[i] < minimum[i]:
minimum[i] = vertex[i]
if maximum[i] == None or vertex[i] > maximum[i]:
maximum[i] = vertex[i]
center = [(maximum[i] + minimum[i]) / 2 for i in range(3)]
maxsize = max(( maximum[i] - minimum[i] for i in range(3) ))
scale = self.size / maxsize
translate = V3(bottomCenter.x - scale * center[0], bottomCenter.y - scale * minimum[1], bottomCenter.z - scale * center[2])
for i in range(len(self.vertices)):
self.vertices[i] = self.vertices[i] * scale + translate
self.corner1 = (V3(minimum) * scale + translate).ifloor()
self.corner2 = (V3(maximum) * scale + translate).iceil()
def drawVertices(self, vertices, material):
b = self.materialBlocks[material]
for vertex in vertices:
if material != self.drawRecord.get(vertex):
self.setBlock(vertex, b)
self.drawRecord[vertex] = material
def render(self):
self.drawRecord = {}
if len(self.materialOrderDict):
faces = sorted(self.faces, key=lambda a : self.materialOrders[a[0]])
else:
faces = self.faces
for faceCount,(material,face) in enumerate(faces):
if faceCount % 4000 == 0:
self.message("{0:.1f}%".format(100. * faceCount / len(self.faces)))
faceVertices = [self.vertices[v] for v in face]
self.drawVertices(getFace(faceVertices), material)
def go(filename, args=[], defaultBlock=STONE):
mc = minecraft.Minecraft()
playerPos = mc.player.getPos()
opts = ""
if args and (args[0] == '-' or re.match("^-?[a-zA-Z]", args[0])):
opts = args.pop(0)
meshArguments = {}
if 'y' in opts:
meshArguments['swapYZ'] = False
elif 'Y' in opts:
meshArguments['swapYZ'] = True
mc.postToChat("Preparing")
mesh = Mesh(filename, minecraft=mc, defaultBlock=defaultBlock, **meshArguments)
mc.postToChat("Reading")
mesh.read()
mc.postToChat("Scaling")
if args:
s = args.pop(0)
if s and int(s):
mesh.size = int(s)
matrix = None
if args:
yaw = float(args.pop(0))
pitch = 0
roll = 0
if args:
pitch = float(args.pop(0))
if args:
roll = float(args.pop(0))
matrix = makeMatrix(yaw, pitch, roll)
mesh.scale(playerPos, matrix)
if 'n' not in opts:
mc.postToChat("Clearing")
mc.setBlocks(mesh.corner1,mesh.corner2,AIR)
mc.postToChat("Rendering")
mesh.render()
mc.postToChat("Done!")
# main program
if __name__ == "__main__":
if len(sys.argv) < 2:
if settings.isPE:
go("models/RaspberryPi.txt")
else:
if int(sys.version[0]) < 3:
from tkFileDialog import askopenfilename
import Tkinter as tkinter
else:
from tkinter.filedialog import askopenfilename
import tkinter as tkinter
master = tkinter.Tk()
master.wm_title("render")
master.attributes("-topmost", True)
tkinter.Label(master, text='Size').grid(row=0)
size = tkinter.Entry(master)
size.grid(row=0,column=1)
size.delete(0,tkinter.END)
tkinter.Label(master, text='Yaw').grid(row=1)
yaw = tkinter.Entry(master)
yaw.grid(row=1,column=1)
yaw.delete(0,tkinter.END)
yaw.insert(0,"0")
tkinter.Label(master, text='Pitch:').grid(row=2)
pitch = tkinter.Entry(master)
pitch.grid(row=2,column=1)
pitch.delete(0,tkinter.END)
pitch.insert(0,"0")
tkinter.Label(master, text='Roll:').grid(row=3)
roll = tkinter.Entry(master)
roll.grid(row=3,column=1)
roll.delete(0,tkinter.END)
roll.insert(0,"0")
tkinter.Label(master, text='Default block:').grid(row=4)
defaultBlock = tkinter.Entry(master)
defaultBlock.grid(row=4,column=1)
defaultBlock.delete(0,tkinter.END)
defaultBlock.insert(0,"STONE")
clearing = tkinter.IntVar()
c = tkinter.Checkbutton(master, text="Clear area", variable = clearing)
c.grid(row=5,column=0,columnspan=2)
c.select()
swapYZ = tkinter.IntVar()
sw = tkinter.Checkbutton(master, text="Default swap YZ", variable = swapYZ)
sw.grid(row=6,column=0,columnspan=2)
sw.select()
def selectFileAndGo():
name = askopenfilename(initialdir='models', filetypes=[
['Control and mesh files', ['.txt', '.ply', '.obj', '.stl', '.3ds']],
['All files', '*']])
if name:
options = '-'
if not clearing.get():
options += 'n'
if swapYZ.get():
options += 'Y'
else:
options += 'y'
args = [options, size.get(), yaw.get(), pitch.get(), roll.get()]
defaultBlockOpt = defaultBlock.get()
master.destroy()
go(name, args, defaultBlock=Block.byName(defaultBlockOpt))
else:
master.destroy()
b = tkinter.Button(master, text="Select file and go",command = selectFileAndGo)
b.grid(row=7,column=0,columnspan=2,rowspan=2)
tkinter.mainloop()
else:
go(os.path.dirname(os.path.realpath(sys.argv[0])) + "/" + "models/" + sys.argv[1] + ".txt", sys.argv[2:])