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PhotonFile.py
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PhotonFile.py
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"""
Loads/Save .photon files (from the Anycubic Photon Slicer) in memory and allows editing of settings and bitmaps.
"""
__version__ = "alpha"
__author__ = "Nard Janssens, Vinicius Silva, Robert Gowans, Ivan Antalec, Leonardo Marques - See Github PhotonFileUtils"
import os
import copy
import math
import struct
from math import *
#import pygame
#from pygame.locals import *
import concurrent
import time
try:
import numpy
numpyAvailable = True
#print("Numpy library available.")
except ImportError:
numpyAvailable = False
#print ("Numpy library not found.")
########################################################################################################################
## Convert byte string to hex string
########################################################################################################################
def hexStr(bytes):
if isinstance(bytes, bytearray):
return ' '.join(format(h, '02X') for h in bytes)
if isinstance(bytes, int):
return format(bytes, '02X')
return ("No Byte (string)")
########################################################################################################################
## Class PhotonFile
########################################################################################################################
class PhotonFile:
isDrawing = False # Navigation can call upon retrieving bitmaps frequently. This var prevents multiple almost parallel loads
nrLayersString = "# Layers" #String is used in multiple locations and thus can be edited here
# Data type constants
tpByte = 0
tpChar = 1
tpInt = 2
tpFloat = 3
# Clipboard Vars to copy/cut and paste layer settinngs/imagedata
clipboardDef = None
clipboardData = None
# This is the data structure of photon file. For each variable we need to know
# Title string to display user, nr bytes to read/write, type of data stored, editable
# Each file consists of
# - General info ( pfStruct_Header, Header)
# - Two previews which contain meta-info an raw image data ( pfStruct_Previews, Previews)
# - For each layer meta-info ( pfStruct_LayerDefs, LayerDefs)
# - For each layer raw image data ( pfStruct_LayerData, LayerData)
pfStruct_Header = [
("Header", 8, tpByte, False, ""),
("Bed X (mm)", 4, tpFloat, True, "Short side of the print bed."),
("Bed Y (mm)", 4, tpFloat, True, "Long side of the print bed."),
("Bed Z (mm)", 4, tpFloat, True, "Maximum height the printer can print."),
("padding0", 3 * 4, tpByte, False, ""), # 3 ints
("Layer height (mm)", 4, tpFloat, True, "Default layer height."),
("Exp. time (s)", 4, tpFloat, True, "Default exposure time."),
("Exp. bottom (s)", 4, tpFloat, True, "Exposure time for bottom layers."),
("Off time (s)", 4, tpFloat, True, "Time UV is turned of between layers. \n Minimum is 6.5 sec, the time to rise the \n build plate and dip back in the resin."),
("# Bottom Layers", 4, tpInt, True, "Number of bottom layers.\n (These have different exposure time.)"),
("Resolution X", 4, tpInt, True, "X-Resolution of the screen through \n which the layer image is projected."),
("Resolution Y", 4, tpInt, True, "Y-Resolution of the screen through \n which the layer image is projected." ),
("Preview 0 (addr)", 4, tpInt, False, "Address where the metadata \n of the High Res preview image can be found."), # start of preview 0
("Layer Defs (addr)", 4, tpInt, False, "Address where the metadata \n for the layer images can be found."), # start of layerDefs
(nrLayersString, 4, tpInt, False, "Number of layers this file has."),
("Preview 1 (addr)", 4, tpInt, False, "Address where the metadata of the \n Low Res preview image can be found."), # start of preview 1
("unknown6", 4, tpInt, False, ""),
("Proj.type-Cast/Mirror", 4, tpInt, False, "LightCuring/Projection type:\n 1=LCD_X_MIRROR \n 0=CAST"), #LightCuring/Projection type // (1=LCD_X_MIRROR, 0=CAST)
("padding1", 6 * 4, tpByte, False, "") # 6 ints
]
pfStruct_Previews = [
("Resolution X", 4, tpInt, False, "X-Resolution of preview pictures."),
("Resolution Y", 4, tpInt, False, "Y-Resolution of preview pictures."),
("Image Address", 4, tpInt, False, "Address where the raw \n image can be found."), # start of rawData0
("Data Length", 4, tpInt, False, "Size (in bytes) of the \n raw image."), # size of rawData0
("padding", 4 * 4, tpByte, False, ""), # 4 ints
("Image Data", -1, tpByte, False, "The raw image."),
]
# The exposure time and off times are ignored by Photon printer, layerheight not and is cumulative
pfStruct_LayerDef = [
("Layer height (mm)", 4, tpFloat, True, "Height at which this layer \n should be printed."),
("Exp. time (s)", 4, tpFloat, False, "Exposure time for this layer.\n (Based on General Info.)"),
("Off time (s)", 4, tpFloat, False, "Off time for this layer.\n (Based on General Info.)"),
("Image Address", 4, tpInt, False, "Address where the raw image \n can be found."),#dataStartPos -> Image Address
("Data Length", 4, tpInt, False, "Size (in bytes) of the raw image."), #size of rawData+lastByte(1)
("padding", 4 * 4, tpByte, False, "") # 4 ints
]
# pfStruct_LayerData =
# rawData - rle encoded bytes except last one
# lastByte - last byte of encoded bitmap data
Header = {}
Previews = [{},{}]
LayerDefs = []
LayerData = []
History=[]
HistoryMaxDepth = 10
########################################################################################################################
## Methods to convert bytes (strings) to python variables and back again
########################################################################################################################
@staticmethod
def bytes_to_int(bytes):
""" Converts list or array of bytes to an int. """
result = 0
for b in reversed(bytes):
result = result * 256 + int(b)
return result
@staticmethod
def bytes_to_float(inbytes):
""" Converts list or array of bytes to an float. """
bits = PhotonFile.bytes_to_int(inbytes)
mantissa = ((bits & 8388607) / 8388608.0)
exponent = (bits >> 23) & 255
sign = 1.0 if bits >> 31 == 0 else -1.0
if exponent != 0:
mantissa += 1.0
elif mantissa == 0.0:
return sign * 0.0
return sign * pow(2.0, exponent - 127) * mantissa
@staticmethod
def bytes_to_hex(bytes):
""" Converts list or array of bytes to an hex. """
return ' '.join(format(h, '02X') for h in bytes)
@staticmethod
def hex_to_bytes(hexStr):
""" Converts hex to array of bytes. """
return bytearray.fromhex(hexStr)
@staticmethod
def int_to_bytes(intVal):
""" Converts POSITIVE int to bytes. """
return intVal.to_bytes(4, byteorder='little')
@staticmethod
def float_to_bytes(floatVal):
""" Converts POSITIVE floats to bytes.
Based heavily upon http: //www.simplymodbus.ca/ieeefloats.xls
"""
# Error when floatVal=0.5
return struct.pack('f',floatVal)
if floatVal == 0: return (0).to_bytes(4, byteorder='big')
sign = -1 if floatVal < 0 else 1
firstBit = 0 if sign == 1 else 1
exponent = -127 if abs(floatVal) < 1.1754943E-38 else floor(log(abs(floatVal), 10) / log(2, 10))
exponent127 = exponent + 127
mantissa = floatVal / pow(2, exponent) / sign
substract = mantissa - 1
multiply = round(substract * 8388608)
div256_1 = multiply / 256
divint_1 = int(div256_1)
rem_1 = int((div256_1 - divint_1) * 256)
div256_2 = divint_1 / 256
divint_2 = int(div256_2)
rem_2 = int((div256_2 - divint_2) * 256)
bin1 = (exponent127 & 0b11111110) >> 1 | firstBit << 7
bin2 = (exponent127 & 0b00000001) << 7 | divint_2
bin3 = rem_2
bin4 = rem_1
# print ("ALT: ",bin(bin1_new), bin(bin2_new),bin(bin3_new),bin(bin4_new))
bin1234 = bin1 | bin2 << 8 | bin3 << 16 | bin4 << 24
return bin1234.to_bytes(4, byteorder='big')
@staticmethod
def convBytes(bytes, bType):
""" Converts all photonfile types to bytes. """
nr = None
if bType == PhotonFile.tpInt:
nr = PhotonFile.bytes_to_int(bytes)
if bType == PhotonFile.tpFloat:
nr = PhotonFile.bytes_to_float(bytes)
if bType == PhotonFile.tpByte:
nr = PhotonFile.bytes_to_hex(bytes)
return nr
########################################################################################################################
## History methods
########################################################################################################################
def realDeepCopy(self,dictionary):
return #probable not needed
""" Makes a real copy of a dictionary consisting of bytes strings
"""
hC = copy.deepcopy(self.Header)
for key,byteString in dictionary.items():
dictionary[key]=(byteString+b'\x00')[:-1] # Force to make a real copy
def saveToHistory(self, action, layerNr):
""" Makes a copy of current /Layer Data to memory
Since all are bytearrays no Copy.Deepcopy is needed.
"""
# Copy LayerDefs and LayerData
layerDef=copy.deepcopy(self.LayerDefs[layerNr])
layerData=copy.deepcopy(self.LayerData[layerNr])
self.realDeepCopy(layerDef)
self.realDeepCopy(layerData)
# Append to history stack/array
newH = {"Action":action,"LayerNr":layerNr,"LayerDef":layerDef,"LayerData":layerData}
print("Stored:",newH,id(layerDef),id(layerData))
self.History.append(newH)
if len(self.History)>self.HistoryMaxDepth:
self.History.remove(self.History[0])
def loadFromHistory(self):
""" Load a copy of current Header/Preview/Layer Data to memory
We copy by reference and remove item from history stack.
"""
if len(self.History)==0:
raise Exception("You have reached the maximum depth to undo.")
# Find last item added to History
idxLastAdded=len(self.History)-1
lastItemAdded=self.History[idxLastAdded]
action=lastItemAdded["Action"]
layerNr =lastItemAdded["LayerNr"]
layerDef = lastItemAdded["LayerDef"]
layerData = lastItemAdded["LayerData"]
print("Found:", self.History[idxLastAdded])
# Reverse the actions
if action=="insert":
self.deleteLayer(layerNr, saveToHistory=False)
elif action=="delete":
self.clipboardDef=layerDef
self.clipboardData=layerData
self.insertLayerBefore(layerNr,fromClipboard=True, saveToHistory=False)
elif action=="replace":
self.clipboardDef=layerDef
self.clipboardData=layerData
self.deleteLayer(layerNr)
self.insertLayerBefore(layerNr,fromClipboard=True, saveToHistory=False)
# Remove this item
self.History.remove(lastItemAdded)
#Make alias for loadFromHistory
undo = loadFromHistory
########################################################################################################################
## Class methods
########################################################################################################################
def __init__(self, photonfilename):
""" Just stores photon filename. """
self.filename = photonfilename
def nrLayers(self):
""" Returns 4 bytes for number of layers as int. """
return PhotonFile.bytes_to_int(self.Header[self.nrLayersString])
def readFile(self):
""" Reads the photofile from disk to memory. """
with open(self.filename, "rb") as binary_file:
# Start at beginning
binary_file.seek(0)
# Read HEADER / General settings
for bTitle, bNr, bType, bEditable,bHint in self.pfStruct_Header:
self.Header[bTitle] = binary_file.read(bNr)
# Read PREVIEWS settings and raw image data
for previewNr in (0,1):
for bTitle, bNr, bType, bEditable, bHint in self.pfStruct_Previews:
# if rawData0 or rawData1 the number bytes to read is given bij dataSize0 and dataSize1
if bTitle == "Image Data": bNr = dataSize
self.Previews[previewNr][bTitle] = binary_file.read(bNr)
if bTitle == "Data Length": dataSize = PhotonFile.bytes_to_int(self.Previews[previewNr][bTitle])
# Read LAYERDEFS settings
nLayers = PhotonFile.bytes_to_int(self.Header[self.nrLayersString])
self.LayerDefs = [dict() for x in range(nLayers)]
# print("nLayers:", nLayers)
# print(" hex:", ' '.join(format(x, '02X') for x in self.Header[self.nrLayersString]))
# print(" dec:", nLayers)
# print("Reading layer meta-info")
for lNr in range(0, nLayers):
# print(" layer: ", lNr)
for bTitle, bNr, bType, bEditable, bHint in self.pfStruct_LayerDef:
self.LayerDefs[lNr][bTitle] = binary_file.read(bNr)
# Read LAYERRAWDATA image data
# print("Reading layer image-info")
self.LayerData = [dict() for x in range(nLayers)]
for lNr in range(0, nLayers):
rawDataSize = PhotonFile.bytes_to_int(self.LayerDefs[lNr]["Data Length"])
# print(" layer: ", lNr, " size: ",rawDataSize)
self.LayerData[lNr]["Raw"] = binary_file.read(rawDataSize - 1) # b'}}}}}}}}}}
# -1 because we don count byte for endOfLayer
self.LayerData[lNr]["EndOfLayer"] = binary_file.read(1)
# print (' '.join(format(x, '02X') for x in header))
# Clear History for this new file
self.History = []
def writeFile(self, newfilename=None):
""" Writes the photofile from memory to disk. """
# Check if other filename is given to save to, otherwise use filename used to load file.
if newfilename == None: newfilename = self.filename
with open(newfilename, "wb") as binary_file:
# Start at beginning
binary_file.seek(0)
# Write HEADER / General settings
for bTitle, bNr, bType, bEditable,bHint in self.pfStruct_Header:
binary_file.write(self.Header[bTitle])
# Write PREVIEWS settings and raw image data
for previewNr in (0, 1):
for bTitle, bNr, bType, bEditable, bHint in self.pfStruct_Previews:
#print ("Save: ",bTitle)
binary_file.write(self.Previews[previewNr][bTitle])
# Read LAYERDEFS settings
nLayers = PhotonFile.bytes_to_int(self.Header[self.nrLayersString])
for lNr in range(0, nLayers):
#print(" layer: ", lNr)
#print(" def: ", self.LayerDefs[lNr])
for bTitle, bNr, bType, bEditable, bHint in self.pfStruct_LayerDef:
binary_file.write(self.LayerDefs[lNr][bTitle])
# Read LAYERRAWDATA image data
# print("Reading layer image-info")
for lNr in range(0, nLayers):
binary_file.write(self.LayerData[lNr]["Raw"])
binary_file.write(self.LayerData[lNr]["EndOfLayer"])
########################################################################################################################
## Encoding
########################################################################################################################
def encodedBitmap_Bytes_withnumpy(image):
""" Converts image (filename/pygame.surface/numpy.array2d) to RLE encoded byte string.
Uses Numpy library - Fast
Based on https://gist.github.com/itdaniher/3f57be9f95fce8daaa5a56e44dd13de5
Encoding scheme:
Highest bit of each byte is color (black or white)
Lowest 7 bits of each byte is repetition of that color, with max of 125 / 0x7D
"""
imgarr=None
# Check if we got a string and if so load image
#if isinstance(image, str): # received name of file to load
# imgsurf = pygame.image.load(image)
# (width, height) = imgsurf.get_size()
#elif isinstance(image,pygame.Surface):
# imgsurf = image # reveived pygame.surface
# (width, height) = imgsurf.get_size()
#el
if isinstance(image, (numpy.ndarray, numpy.generic)): # received opencv / numpy image array
#print ("shape",image.shape)
(width, height)=image.shape
imgarr=image
else:
raise Exception("Only image filename, pygame.Surface or numpy.array (2D) are excepted")
# Check if size is correct size (1440 x 2560)
if not (width, height) == (1440, 2560):
raise Exception("Your image dimensions are off and should be 1440x2560")
#t0=time.time()
# Convert image data to Numpy 1-dimensional array
#if not isinstance(image, (numpy.ndarray, numpy.generic)): # Not needed if we got an numpy array as input
# imgarr = pygame.surfarray.array2d(imgsurf)
#t1 = time.time()
# Rotate,flip image and flatten array
imgarr = numpy.rot90(imgarr,axes=(1,0))
imgarr = numpy.fliplr(imgarr) # reverse/mirror array
x = numpy.asarray(imgarr).flatten(0)
#t2 = time.time()
#print ("rotate/flip/flatten:",(t2-t1))
# Encoding magic
where = numpy.flatnonzero
x = numpy.asarray(x)
n = len(x)
if n == 0:
return numpy.array([], dtype=numpy.int)
starts = numpy.r_[0, where(~numpy.isclose(x[1:], x[:-1], equal_nan=True)) + 1]
lengths = numpy.diff(numpy.r_[starts, n])
values = x[starts]
#ret=np.dstack((lengths, values))[0]
#t3 = time.time()
#print ("encoding magic:",(t3-t2))
# Reduce repetitions of color to max 0x7D/125 and store in bytearray
rleData = bytearray()
for (nr, col) in zip(lengths,values):
#color = (abs(col)>1) # slow
color=1 if col else 0 # fast
while nr > 0x7D:
encValue = (color << 7) | 0x7D
rleData.append(encValue)
nr = nr - 0x7D
encValue = (color << 7) | nr
rleData.append(encValue)
#t4 = time.time()
#print ("max rep 0x7D:",(t4-t3))
#quit()
# Needed is an byte string, so convert
return bytes(rleData)
def encodedBitmap_Bytes_nonumpy(surfOrFile):
""" Converts image data from file on disk to RLE encoded byte string.
Processes pixels one at a time (pygame.get_at) - Slow
Encoding scheme:
Highest bit of each byte is color (black or white)
Lowest 7 bits of each byte is repetition of that color, with max of 125 / 0x7D
"""
# Check if we got a string and if so load image
if isinstance(surfOrFile, str):
imgsurf = pygame.image.load(surfOrFile)
else:
imgsurf = surfOrFile
# Check if size is correct size (1440 x 2560)
#bitDepth = imgsurf.get_bitsize()
#bytePerPixel = imgsurf.get_bytesize()
(width, height) = imgsurf.get_size()
if not (width, height) == (1440,2560):
raise Exception("Your image dimensions are off and should be 1440x2560")
# Count number of pixels with same color up until 0x7D/125 repetitions
rleData = bytearray()
color = 0
black = 0
white = 1
nrOfColor = 0
prevColor=None
for y in range(height):
for x in range(width):
# print (imgsurf.get_at((x, y)))
(r, g, b, a) = imgsurf.get_at((x, y))
if ((r + g + b) // 3) < 128:
color = black
else:
color = white
if prevColor == None: prevColor = color
isLastPixel = (x == (width - 1) and y == (height - 1))
if color == prevColor and nrOfColor < 0x7D and not isLastPixel:
nrOfColor = nrOfColor + 1
else:
#print (color,nrOfColor,nrOfColor<<1)
encValue = (prevColor << 7) | nrOfColor # push color (B/W) to highest bit and repetitions to lowest 7 bits.
rleData.append(encValue)
prevColor = color
nrOfColor = 1
return bytes(rleData)
def encodedBitmap_Bytes(surfOrFile):
""" Depening on availability of Numpy, calls upon correct Encoding method."""
if numpyAvailable:
return PhotonFile.encodedBitmap_Bytes_withnumpy(surfOrFile)
else:
return PhotonFile.encodedBitmap_Bytes_nonumpy(surfOrFile)
def encodedPreviewBitmap_Bytes_nonumpy(filename,checkSizeForNr=0):
""" Converts image data from file on disk to RLE encoded byte string.
Processes pixels one at a time (pygame.get_at) - Slow
Encoding scheme:
The color (R,G,B) of a pixel spans 2 bytes (little endian) and each color component is 5 bits: RRRRR GGG GG X BBBBB
If the X bit is set, then the next 2 bytes (little endian) masked with 0xFFF represents how many more times to repeat that pixel.
"""
imgsurf = pygame.image.load(filename)
# bitDepth = imgsurf.get_bitsize()
# bytePerPixel = imgsurf.get_bytesize()
(width, height) = imgsurf.get_size()
print ("Size:", width, height)
#Preview images tend to have different sizes. Check on size is thus not possible.
#if checkSizeForNr==0 and not (width, height) == (360,186):
# raise Exception("Your image dimensions are off and should be 360x186 for the 1st preview.")
#if checkSizeForNr==1 and not (width, height) == (198,101):
# raise Exception("Your image dimensions are off and should be 198x101 for the 1st preview.")
# Count number of pixels with same color up until 0x7D/125 repetitions
rleData = bytearray()
color = 0
black = 0
white = 1
nrOfColor = 0
prevColor = None
for y in range(height):
for x in range(width):
#print (x,y)
# print (imgsurf.get_at((x, y)))
color = imgsurf.get_at((x, y)) # (r, g, b, a)
if prevColor == None: prevColor = color
isLastPixel = (x == (width - 1) and y == (height - 1))
if color == prevColor and nrOfColor < 0x0FFF and not isLastPixel:
nrOfColor = nrOfColor + 1
else:
# print (color,nrOfColor,nrOfColor<<1)
R=prevColor[0]
G=prevColor[1]
B=prevColor[2]
if nrOfColor>1:
X=1
else:
X=0
# build 2 or 4 bytes (depending on X
# The color (R,G,B) of a pixel spans 2 bytes (little endian) and
# each color component is 5 bits: RRRRR GGG GG X BBBBB
R = round(R / 255 * 31)
G = round(G / 255 * 31)
B = round(B / 255 * 31)
encValue0=R<<3 | G>>2
encValue1=(((G & 0b00000011)<<6) | X<<5 | B)
if X==1:
nrOfColor=nrOfColor-1 # write one less than nr of pixels
encValue2=nrOfColor>>8
encValue3=nrOfColor & 0b000000011111111
#seems like nr bytes pixels have 0011 as start
encValue2=encValue2 | 0b00110000
# save bytes
rleData.append(encValue1)
rleData.append(encValue0)
if X==1:
rleData.append(encValue3)
rleData.append(encValue2)
# search next color
prevColor = color
nrOfColor = 1
#print ("len",len(rleData))
return (width,height,bytes(rleData))
########################################################################################################################
## Decoding
########################################################################################################################
def getBitmap_withnumpy(self, layerNr, forecolor=(128,255,128), backcolor=(0,0,0),scale=(0.25,0.25),retNumpyArray=False):
""" Decodes a RLE byte array from PhotonFile object to a pygame surface.
Based on: https://gist.github.com/itdaniher/3f57be9f95fce8daaa5a56e44dd13de5
Encoding scheme:
Highest bit of each byte is color (black or white)
Lowest 7 bits of each byte is repetition of that color, with max of 125 / 0x7D
"""
#tStart=pygame.time.get_ticks()
# Colors are stored reversed and we count on alpha bit (size of int does not matter for numpy speed)
isAlpha=False
if len(forecolor) == 4 or len(backcolor) == 4: isAlpha = True
if len(forecolor) == 3:forecolor = (255,forecolor[0], forecolor[1], forecolor[2])
elif len(forecolor) == 4:forecolor = (forecolor[3], forecolor[0], forecolor[1],forecolor[2])
if len(backcolor) == 3:backcolor = (255,backcolor[0], backcolor[1], backcolor[2])
elif len(backcolor) == 4:backcolor=(backcolor[3], backcolor[0], backcolor[1],backcolor[2])
# If no layers return
if self.nrLayers()==0:#could occur if loading new file
memory=pygame.Surface((int(1440 * scale[0]), int(2560 * scale[1])),24)
return memory
# Tell PhotonFile we are drawing so GUI can prevent too many calls on getBitmap
self.isDrawing = True
# Retrieve raw image data and add last byte to complete the byte array
bA = self.LayerData[layerNr]["Raw"]
# add endOfLayer Byte
bA = bA + self.LayerData[layerNr]["EndOfLayer"]
# Convert bytes to numpy 1 dimensional array
bN =numpy.fromstring(bA,dtype=numpy.uint8)
# Extract color value (highest bit) and nr of repetitions (lowest 7 bits)
valbin = bN >> 7 # only read 1st bit
nr = bN & ~(1 << 7) # turn highest bit of
# Replace 0's en 1's with correct colors
forecolor_int = (forecolor[0] << 24) + (forecolor[1] << 16) + (forecolor[2] << 8) + forecolor[3]
backcolor_int = (backcolor[0] << 24) + (backcolor[1] << 16) + (backcolor[2] << 8) + backcolor[3]
val = numpy.array([{0: backcolor_int, 1: forecolor_int}[x] for x in valbin])
# Make a 2d array like [ [3,0] [2,1], [nr_i,val_i]...] using the colorvalues (val) and repetitions(nr)
runs = numpy.column_stack((nr, val))
# Decoding magic
runs_t = numpy.transpose(runs)
lengths = runs_t[0].astype(int)
values = runs_t[1].astype(int)
starts = numpy.concatenate(([0], numpy.cumsum(lengths)[:-1]))
starts, lengths, values = map(numpy.asarray, (starts, lengths, values))
ends = starts + lengths
n = ends[-1]
x = numpy.full(n, 0)
for lo, hi, val in zip(starts, ends, values):
x[lo:hi] = val
# Make sure we have a bitmap of the correct size and if not pad with black pixels
if not len(x) == 3686400: print ("Warning: The file decoded with less bytes than needed. Will pad the file with zero bytes.")
while not len(x)==3686400:
x=numpy.append(x,(0,))
# Convert 1-dim array to matrix
rgb2d = x.reshape((2560,1440)) # data is stored in rows of 2560
if retNumpyArray:return rgb2d # if numpy array is returned, rotation not needed
rgb2d = numpy.rot90(rgb2d, axes=(1, 0)) # we need 1440x2560
rgb2d = numpy.fliplr(rgb2d) # however data is mirrored along x axis
#picture=pygame.surfarray.make_surface(rgb2d)# convert numpy array to pygame surface
#memory=pygame.transform.scale(picture, (int(1440*scale[0]), int(2560*scale[1]))) # rescale for display in window
if isAlpha:
temp = pygame.Surface((1440, 2560), depth=32,flags=pygame.SRCALPHA)
else:
temp = pygame.Surface((1440, 2560), depth=24)
pygame.surfarray.blit_array(temp,rgb2d)
memory=pygame.transform.scale(temp, (int(1440*scale[0]), int(2560*scale[1]))) # rescale for display in window
# Done drawing so next caller knows that next call can be made.
self.isDrawing = False
#tDelta = pygame.time.get_ticks()-tStart
#print ("elaps:",tDelta)
return memory
def getBitmap_nonumpy(self, layerNr, forecolor=(128,255,128), backcolor=(0,0,0),scale=(0.25,0.25)):
""" Decodes a RLE byte array from PhotonFile object to a pygame surface.
Based on: https://gist.github.com/itdaniher/3f57be9f95fce8daaa5a56e44dd13de5
Encoding scheme:
Highest bit of each byte is color (black or white)
Lowest 7 bits of each byte is repetition of that color, with max of 125 / 0x7D
"""
# Tell PhotonFile we are drawing so GUI can prevent too many calls on getBitmap
memory = pygame.Surface((int(1440 * scale[0]), int(2560 * scale[1])))
if self.nrLayers()==0: return memory #could occur if loading new file
self.isDrawing = True
# Retrieve raw image data and add last byte to complete the byte array
bA = self.LayerData[layerNr]["Raw"]
# add endOfLayer Byte
bA = bA + self.LayerData[layerNr]["EndOfLayer"]
# Decode bytes to colors and draw lines of that color on the pygame surface
x = 0
y = 0
for idx, b in enumerate(bA):
# From each byte retrieve color (highest bit) and number of pixels of that color (lowest 7 bits)
nr = b & ~(1 << 7) # turn highest bit of
val = b >> 7 # only read 1st bit
# The surface to draw on is smaller (scale) than the file (1440x2560 pixels)
x1 = int(x *scale[0])
y1 = int(y *scale[1])
x2 = int((x + nr) *scale[0])
y2 = y1
if val==0:
col= backcolor
else:
col=forecolor
# Bytes and repetions of pixels with same color can span muliple lines (y-values)
if x2 > int(1440 *scale[0]): x2 = int(1440 *scale[1])
pygame.draw.line(memory, col, (x1, y1), (x2, y2))
# debug nr2=nr-(x+nr-1440) if (x+nr)>=1440 else nr
# debug print("draw line: ", x, y, " - ", nr2)
x = x + nr
if x >= 1440:
nr = x - 1440
x = 0
y = y + 1
x1 = int(x *scale[0])
y1 = int(y *scale[1])
x2 = int((x + nr) *scale[0])
y2 = y1
pygame.draw.line(memory, col, (x1, y1), (x2, y2))
# debug print ("draw line: ",x,y," - ",nr)
x = x + nr
#print("Screen Drawn")
# debug print ("layer: ", layerNr)
# debug print ("lastByte:", self.LayerData[layerNr]["EndOfLayer"])
# Done drawing so next caller knows that next call can be made.
self.isDrawing = False
return memory
def getBitmap(self, layerNr, forecolor=(128, 255, 128), backcolor=(0, 0, 0), scale=(1, 1)):
""" Depending on availability of Numpy, calls upon correct Decoding method."""
if numpyAvailable:
return self.getBitmap_withnumpy(layerNr,forecolor,backcolor,scale)
else:
return self.getBitmap_nonumpy(layerNr,forecolor,backcolor,scale)
def volume(self,progressDialog=None):
nLayers=self.nrLayers()
nrPixels=0
#numpyAvailable=False
for layerNr in range(0,nLayers):
img=self.getBitmap(layerNr,forecolor=(255,255,255,255),backcolor=(0,0,0,0),scale=(1,1))
pixarray = pygame.surfarray.pixels2d(img)
pixelsInLayer=0
if numpyAvailable:
pixelsInLayer=((pixarray>0).sum())
else:
for row in pixarray:
for color in row:
if color>0:pixelsInLayer+=1
nrPixels=nrPixels+pixelsInLayer
# Check if user canceled
if not progressDialog==None:
progressDialog.setProgress(100*layerNr/nLayers)
progressDialog.setProgressLabel(str(layerNr)+"/"+str(nLayers))
progressDialog.handleEvents()
if progressDialog.cancel: return False
#pixel is 0.047mm x 0.047mm x layer height
print (nrPixels)
pixVolume=0.047*0.047*self.bytes_to_float(self.Header["Layer height (mm)"])
volume=pixVolume*nrPixels
return volume
def getPreviewBitmap(self, prevNr, scaleToWidth=1440/4):
""" Decodes a RLE byte array from PhotonFile object to a pygame surface.
Based on https://github.com/Reonarudo/pcb2photon/issues/2
Encoding scheme:
The color (R,G,B) of a pixel spans 2 bytes (little endian) and each color component is 5 bits: RRRRR GGG GG X BBBBB
If the X bit is set, then the next 2 bytes (little endian) masked with 0xFFF represents how many more times to repeat that pixel.
"""
# Tell PhotonFile we are drawing so GUI can prevent too many calls on getBitmap
self.isDrawing = True
# Retrieve resolution of preview image and set pygame surface to that size.
w = PhotonFile.bytes_to_int(self.Previews[prevNr]["Resolution X"])
h = PhotonFile.bytes_to_int(self.Previews[prevNr]["Resolution Y"])
s = PhotonFile.bytes_to_int(self.Previews[prevNr]["Data Length"])
if scaleToWidth==0:
scale=(1,1)
else:
scale = (scaleToWidth / w, scaleToWidth / w)
memory = pygame.Surface((int(w), int(h)))
if w == 0 or h == 0: return memory # if size is (0,0) we return empty surface
# Retrieve raw image data and add last byte to complete the byte array
bA = self.Previews[prevNr]["Image Data"]
# Decode bytes to colors and draw lines of that color on the pygame surface
idx = 0
pixelIdx = 0
while idx < len(bA):
# Combine 2 bytes Little Endian so we get RRRRR GGG GG X BBBBB (and advance read byte counter)
b12 = bA[idx + 1] << 8 | bA[idx + 0]
idx += 2
# Retrieve colr components and make pygame color tuple
#red = round(((b12 >> 11) & 0x1F) / 31 * 255)
red = round(((b12 >> 11) & 0x1F) << 3 )
#green = round(((b12 >> 6) & 0x1F) / 31 * 255)
green = round(((b12 >> 6) & 0x1F) << 3 )
#blue = round(((b12 >> 0) & 0x1F) / 31 * 255)
blue = round((b12 & 0x1F) << 3 )
col = (red, green, blue)
# If the X bit is set, then the next 2 bytes (little endian) masked with 0xFFF represents how many more times to repeat that pixel.
nr = 1
if b12 & 0x20:
nr12 = bA[idx + 1] << 8 | bA[idx + 0]
idx += 2
nr += nr12 & 0x0FFF
# Draw (nr) many pixels of the color
for i in range(0, nr, 1):
x = int((pixelIdx % w))
y = int((pixelIdx / w))
memory.set_at((x, y), col)
pixelIdx += 1
# Scale the surface to the wanted resolution
memory = pygame.transform.scale(memory, (int(w * scale[0]), int(h * scale[1])))
# Done drawing so next caller knows that next call can be made.
self.isDrawing = False
return memory
########################################################################################################################
## Layer (Image) Operations
########################################################################################################################
def layerHeight(self,layerNr):
""" Return height between two layers
"""
# We retrieve layer height from previous layer
if layerNr>0:
curLayerHeight = self.bytes_to_float(self.LayerDefs[layerNr]["Layer height (mm)"])
prevLayerHeight = self.bytes_to_float(self.LayerDefs[layerNr-1]["Layer height (mm)"])
else:
if self.nrLayers()>1:
curLayerHeight = self.bytes_to_float(self.LayerDefs[layerNr+1]["Layer height (mm)"])
prevLayerHeight=0
else:
curLayerHeight=self.bytes_to_float(self.Header["Layer height (mm)"])
prevLayerHeight = 0
return curLayerHeight-prevLayerHeight
#print ("Delta:", deltaHeight)
def deleteLayer(self, layerNr, saveToHistory=True):
""" Deletes layer and its image data in the PhotonFile object, but store in clipboard for paste. """
# Store all data to history
if saveToHistory: self.saveToHistory("delete",layerNr)
#deltaHeight=self.bytes_to_float(self.LayerDefs[layerNr]["Layer height (mm)"])
deltaHeight =self.layerHeight(layerNr)
print ("deltaHeight:",deltaHeight)
# Update start addresses of RawData of before deletion with size of one extra layerdef (36 bytes)
for rLayerNr in range(0,layerNr):
# Adjust image address for removal of image raw data and end byte
curAddr=self.bytes_to_int(self.LayerDefs[rLayerNr]["Image Address"])
newAddr=curAddr-36 # size of layerdef
self.LayerDefs[rLayerNr]["Image Address"]= self.int_to_bytes(newAddr)
# Update start addresses of RawData of after deletion with size of image and layerdef
deltaLength = self.bytes_to_int(self.LayerDefs[layerNr]["Data Length"]) + 36 # +1 for len(EndOfLayer)
nLayers=self.nrLayers()
for rLayerNr in range(layerNr+1,nLayers):
# Adjust image address for removal of image raw data and end byte
curAddr=self.bytes_to_int(self.LayerDefs[rLayerNr]["Image Address"])
newAddr=curAddr-deltaLength
#print ("layer, cur, new: ",rLayerNr,curAddr,newAddr)
self.LayerDefs[rLayerNr]["Image Address"]= self.int_to_bytes(newAddr)
# Adjust layer starting height for removal of layer
curHeight=self.bytes_to_float(self.LayerDefs[rLayerNr]["Layer height (mm)"])
newHeight=curHeight-deltaHeight
self.LayerDefs[rLayerNr]["Layer height (mm)"] =self.float_to_bytes(newHeight)
# Store deleted layer in clipboard
self.clipboardDef=self.LayerDefs[layerNr].copy()
self.clipboardData=self.LayerData[layerNr].copy()
# Delete layer settings and data and reduce number of layers in header
self.LayerDefs.remove(self.LayerDefs[layerNr])
self.LayerData.remove(self.LayerData[layerNr])
self.Header[self.nrLayersString]=self.int_to_bytes(self.nrLayers()-1)
def insertLayerBefore(self, layerNr, fromClipboard=False, saveToHistory=True):
""" Inserts layer copying data of the previous layer or the clipboard. """
if fromClipboard and self.clipboardDef==None: raise Exception("Clipboard is empty!")
# Store all data to history
if saveToHistory: self.saveToHistory("insert",layerNr)
# Check if layerNr in range, could occur on undo after deleting last layer
# print(layerNr, "/", self.nrLayers())
insertLast=False
if layerNr>self.nrLayers(): layerNr=self.nrLayers()
if layerNr == self.nrLayers():
layerNr=layerNr-1 # temporary reduce layerNr
insertLast=True
# Check deltaHeight
deltaHeight = self.layerHeight(layerNr)
# Make duplicate of layerDef and layerData if not pasting from clipboard
if fromClipboard == False:
self.clipboardDef=self.LayerDefs[layerNr].copy()
self.clipboardData=self.LayerData[layerNr].copy()
# Set layerheight correctly
if layerNr==0: # if first layer than the height should start at 0
self.clipboardDef["Layer height (mm)"] = self.float_to_bytes(0)
else: # start at layer height of layer at which we insert
curLayerHeight = self.bytes_to_float(self.LayerDefs[layerNr]["Layer height (mm)"])
self.clipboardDef["Layer height (mm)"]=self.float_to_bytes(curLayerHeight)
# Set start addresses of layer in clipboard, we add 1 layer(def) so add 36 bytes
lA=self.bytes_to_int(self.LayerDefs[layerNr]["Image Address"])+36
# if lastlayer we need to add last image length
if insertLast: lA=lA+self.bytes_to_int(self.LayerDefs[layerNr]["Data Length"])
self.clipboardDef["Image Address"]=self.int_to_bytes(lA)
# If we inserting last layer, we correct layerNr
if insertLast: layerNr = layerNr + 1 # fix temporary reduced layerNr
# Update start addresses of RawData of before insertion with size of one extra layerdef (36 bytes)
for rLayerNr in range(0,layerNr):
# Adjust image address for removal of image raw data and end byte
curAddr=self.bytes_to_int(self.LayerDefs[rLayerNr]["Image Address"])
newAddr=curAddr+36 # size of layerdef
self.LayerDefs[rLayerNr]["Image Address"]= self.int_to_bytes(newAddr)
# Update start addresses of RawData of after insertion with size of image and layerdef
# Calculate how much room we need in between. We insert an extra layerdef (36 bytes) and a extra image
deltaLayerImgAddress = self.bytes_to_int(self.clipboardDef["Data Length"]) + 36
nLayers=self.nrLayers()
# remove
for rLayerNr in range(layerNr,nLayers):
# Adjust image address for removal of image raw data and end byte
curAddr=self.bytes_to_int(self.LayerDefs[rLayerNr]["Image Address"])
newAddr=curAddr+deltaLayerImgAddress
self.LayerDefs[rLayerNr]["Image Address"]= self.int_to_bytes(newAddr)
# Adjust layer starting height for removal of layer
curHeight=self.bytes_to_float(self.LayerDefs[rLayerNr]["Layer height (mm)"])
newHeight=curHeight+deltaHeight
self.LayerDefs[rLayerNr]["Layer height (mm)"] =self.float_to_bytes(newHeight)
#print ("layer, cur, new: ",rLayerNr,curAddr,newAddr, "|", curHeight,newHeight ,">",self.bytes_to_float(self.LayerDefs[rLayerNr]["Layer height (mm)"]))
# Insert layer settings and data and reduce number of layers in header
self.LayerDefs.insert(layerNr, self.clipboardDef)
self.LayerData.insert(layerNr, self.clipboardData)
self.Header[self.nrLayersString]=self.int_to_bytes(self.nrLayers()+1)
# Make new copy so second paste will not reference this inserted objects
self.clipboardDef = self.LayerDefs[layerNr].copy()
self.clipboardData = self.LayerData[layerNr].copy()
def copyLayer(self,layerNr):
# Make duplicate of layerDef and layerData
self.clipboardDef=self.LayerDefs[layerNr].copy()
self.clipboardData=self.LayerData[layerNr].copy()
def replaceBitmap(self, layerNr,filePath, saveToHistory=True):
""" Replace image data in PhotonFile object with new (encoded data of) image on disk."""
print(" ", layerNr, "/", filePath)
# Store all data to history
if saveToHistory: self.saveToHistory("replace",layerNr)
# Get/encode raw data
rawData = PhotonFile.encodedBitmap_Bytes(filePath)
# Last byte is stored seperately
rawDataTrunc = rawData[:-1]
rawDataLastByte = rawData[-1:]
# Get change in image rawData size so we can correct starting addresses of higher layer images
oldLength=self.bytes_to_int(self.LayerDefs[layerNr]["Data Length"]) #"Data Length" = len(rawData)+len(EndOfLayer)
newLength=len(rawData)
deltaLength=newLength-oldLength