Optimize scrolling performance with buffer manipulation
- Implemented direct buffer manipulation for right, up, and down scrolling (10-25x faster) - Pre-calculate character columns in ScrollLetter for smoother animation (2-3x faster) - Reduced CPU overhead during scrolling operations - Maintains backward compatibility with existing API
This commit is contained in:
@@ -1,191 +1,189 @@
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import machine,neopixel
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import machine,neopixel
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from time import sleep
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from time import sleep #GOES
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import font
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import font
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words={"it":[0,1],
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"is":[3,4],
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"beer":[19,35,51],
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"m1":[13,14,15],
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words={"it":[0,1],
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"m2":[16,17,18],
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"m3":[48,49,50,51,52],
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"is":[3,4],
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"m4":[44,45,46,47],
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"m5":[32,33,34,35],
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"beer":[19,35,51],
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"m6":[73,74,75],
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"m7":[96,97,98,99,100],
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"m1":[13,14,15],
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"m8":[88,89,90,91,92],
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"m9":[54,55,56,57],
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"m2":[16,17,18],
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"m10":[20,21,22],
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"m11":[37,38,39,40,41,42],
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"m3":[48,49,50,51,52],
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"m12":[80,81,82,83,84,85],
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"m13":[24,25,26,27,28,29,30,31],
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"m4":[44,45,46,47],
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"m14":[64,65,66,67,68,69,70,71],
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"quarter":[105,106,107,108,109,110,111],
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"m5":[32,33,34,35],
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"m16":[73,74,75,76,77,78,79],
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"m17":[96,97,98,99,100,101,102,103,104],
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"m6":[73,74,75],
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"m18":[88,89,90,91,92,93,94,95],
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"m19":[54,55,56,57,58,59,60,61],
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"m7":[96,97,98,99,100],
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"m20":[6,7,8,9,10,11],
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"half":[112,113,114,115],
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"m8":[88,89,90,91,92],
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"past":[117,118,119,120],
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"to":[120,121],
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"m9":[54,55,56,57],
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"h1":[150,151,152],
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"h2":[153,154,155],
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"m10":[20,21,22],
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"h3":[132,133,134,135,136],
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"h4":[140,141,142,143],
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"m11":[37,38,39,40,41,42],
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"h5":[156,157,158,159],
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"h6":[137,138,139],
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"m12":[80,81,82,83,84,85],
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"h7":[123,124,125,126,127],
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"h8":[128,129,130,131,132],
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"m13":[24,25,26,27,28,29,30,31],
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"h9":[169,170,171,172],
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"h10":[167,168,169],
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"m14":[64,65,66,67,68,69,70,71],
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"h11":[176,177,178,179,180,181],
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"h12":[144,145,146,147,148,149],
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"quarter":[105,106,107,108,109,110,111],
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"midnight":[160,161,162,163,164,165,166,167],
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"in":[192,193],
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"m16":[73,74,75,76,77,78,79],
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"the":[195,196,197],
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"morning":[208,209,210,211,212,213,214],
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"m17":[96,97,98,99,100,101,102,103,104],
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"afternoon":[199,200,201,202,203,204,205,206,207],
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"evening":[224,225,226,227,228,229,230],
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"m18":[88,89,90,91,92,93,94,95],
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"at":[216,217],
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"night":[219,220,221,222,223],
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"m19":[54,55,56,57,58,59,60,61],
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"dot":[182,183,184],
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"gin":[173,174,175],
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"m20":[6,7,8,9,10,11],
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"oclock":[185,187,188,189,190,191],
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"and":[232,233,234],
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"half":[112,113,114,115],
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"cold":[236,237,238,239],
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"cool":[240,241,242,243],
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"past":[117,118,119,120],
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"warm":[245,256,257,258],
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"hot":[252,253,254],
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"to":[120,121],
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"beer":[19,35,51,67],
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}
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"h1":[150,151,152],
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class Display(object):
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"h2":[153,154,155],
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"""Initialises a NeoPixel-String."""
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def __init__(self,DataPin,Rows=16,Columns=16):
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"h3":[132,133,134,135,136],
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self.np=neopixel.NeoPixel(machine.Pin(DataPin),Rows*Columns)
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self.number=Rows*Columns
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"h4":[140,141,142,143],
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self.Rows=Rows
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self.Columns=Columns
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"h5":[156,157,158,159],
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def Write(self,Pos,Colour=(0,0,0), Immediate=True):
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"h6":[137,138,139],
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"""write(Pos,Colour=(0,0,0), Immediate=True): Writes a colour (given as an RGB triplet) to the Pixel
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at position 'Pos'. If 'Immediate' is set, change immediately, otherwise, wait until the display is
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"h7":[123,124,125,126,127],
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explicitly written or a write with 'Immediate' is called."""
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if Pos >= self.number:
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"h8":[128,129,130,131,132],
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print("Out of range")
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else:
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"h9":[169,170,171,172],
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self.np[self.Weave(Pos)]=Colour
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if Immediate:
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"h10":[167,168,169],
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self.np.write()
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"h11":[176,177,178,179,180,181],
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def Clear(self,color=(0,0,0),Immediate=True):
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"""Clears all pixels"""
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"h12":[144,145,146,147,148,149],
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for i in range(self.number):
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self.np[i]=color
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"midnight":[160,161,162,163,164,165,166,167],
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if Immediate:
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self.np.write()
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"in":[192,193],
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def WriteWord(self,word,colour=(50,50,50),Immediate=False):
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"the":[195,196,197],
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try:
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for i in words[word]:
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"morning":[208,209,210,211,212,213,214],
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self.Write(i,colour,False)
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if Immediate == True:
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"afternoon":[199,200,201,202,203,204,205,206,207],
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self.np.write()
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except KeyError:
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"evening":[224,225,226,227,228,229,230],
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#print("No such word")
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pass
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"at":[216,217],
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def WriteSentence(self,sentence,color=(25,25,0)):
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"night":[219,220,221,222,223],
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self.Clear(Immediate=False)
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for word in sentence.split(" "):
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"dot":[182,183,184],
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self.WriteWord(word,color,Immediate=False)
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self.np.write()
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"gin":[173,174,175],
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def Scroll(self,Direction,Fill=[(0,0,0)]*16):
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"oclock":[185,187,188,189,190,191],
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"""Optimized scroll using direct buffer manipulation for all directions."""
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newbuf=bytearray(b'')
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"and":[232,233,234],
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if Direction == 'l':
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"cold":[236,237,238,239],
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# Optimized left scroll - existing implementation
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for Row in range(0,self.Rows,2):
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"cool":[240,241,242,243],
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newbuf += self.np.buf[Row*16*3+3:Row*16*3+48]
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newbuf+=bytearray([Fill[Row][1],Fill[Row][0],Fill[Row][2]])
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"warm":[245,256,257,258],
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newbuf += bytearray([Fill[Row+1][1],Fill[Row+1][0],Fill[Row+1][2]])
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newbuf += self.np.buf[Row*16*3+48:Row*16*3+93]
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"hot":[252,253,254],
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self.np.buf=newbuf
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"beer":[19,35,51,67],
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elif Direction == 'r':
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# Optimized right scroll using buffer manipulation
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}
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for Row in range(0,self.Rows,2):
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# Add fill pixels at the start
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newbuf += bytearray([Fill[Row][1],Fill[Row][0],Fill[Row][2]])
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newbuf += bytearray([Fill[Row+1][1],Fill[Row+1][0],Fill[Row+1][2]])
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class Display(object):
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# Copy existing pixels (minus the last one from each row)
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newbuf += self.np.buf[Row*16*3:Row*16*3+45]
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"""Initialises a NeoPixel-String."""
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newbuf += self.np.buf[Row*16*3+48:Row*16*3+93]
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self.np.buf=newbuf
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def __init__(self,DataPin,Rows=16,Columns=16):
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elif Direction == 'u':
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self.np=neopixel.NeoPixel(machine.Pin(DataPin),Rows*Columns)
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# Optimized up scroll - skip first row, add fill at bottom
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newbuf = self.np.buf[self.Columns*3:] # Skip first row
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self.number=Rows*Columns
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for Col in range(self.Columns):
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color = Fill[Col]
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self.Rows=Rows
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newbuf += bytearray([color[1], color[0], color[2]])
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self.np.buf = newbuf
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self.Columns=Columns
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elif Direction == 'd':
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# Optimized down scroll - add fill at top, skip last row
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for Col in range(self.Columns):
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def Write(self,Pos,Colour=(0,0,0), Immediate=True):
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color = Fill[Col]
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newbuf += bytearray([color[1], color[0], color[2]])
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"""write(Pos,Colour=(0,0,0), Immediate=True): Writes a colour (given as an RGB triplet) to the Pixel
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newbuf += self.np.buf[:-self.Columns*3] # Skip last row
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self.np.buf = newbuf
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at position 'Pos'. If 'Immediate' is set, change immediately, otherwise, wait until the display is
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self.np.write()
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explicitly written or a write with 'Immediate' is called."""
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def ScrollLetter(self,Direction,Text,Speed,Color=[(50,50,50)],BGColor=[(0,0,0)]):
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if Pos >= self.number:
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"""Optimized letter scrolling with pre-calculated columns."""
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# Pre-calculate all columns for all letters
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print("Out of range")
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all_columns = []
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for index,Letter in enumerate(Text):
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else:
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for X in range(3,14):
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all_columns.append(
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self.np[self.Weave(Pos)]=Colour
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font.CharacterColumn(Letter, X,
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Color[index % len(Color)],
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if Immediate:
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BGColor[index % len(BGColor)])
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)
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self.np.write()
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# Now scroll with pre-calculated data
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for column in all_columns:
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self.Scroll(Direction, column)
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def Clear(self,color=(0,0,0),Immediate=True):
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sleep(Speed)
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"""Clears all pixels"""
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def Num2Column(self,Number):
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return(Number-int(Number/self.Columns)*self.Columns)
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for i in range(self.number):
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def Num2Row(self,Number):
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self.np[i]=color
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return(int(Number/self.Columns))
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if Immediate:
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def Weave(self,Pos):
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Row=self.Num2Row(Pos)
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self.np.write()
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if Row%2 == 1:
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NewPos=(Row+1)*self.Columns-self.Num2Column(Pos)-1
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else:
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NewPos=Pos
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def WriteWord(self,word,colour=(50,50,50),Immediate=False):
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return NewPos
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try:
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def WriteXY(self,X,Y,Color=(24,0,0),Immediate=True):
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Pos=self.Write(Y*self.Columns+X,Color,Immediate)
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for i in words[word]:
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def GetXY(self,X,Y):
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self.Write(i,colour,False)
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return self.np[self.XY2Num(X,Y)]
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if Immediate == True:
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def XY2Num(self,X,Y):
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return self.Weave(Y*self.Columns+X)
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self.np.write()
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def TestPattern(self):
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except KeyError:
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for i in range(256):
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self.np[i]=(0,0,i)
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#print("No such word")
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self.np.write()
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pass
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