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135 lines
2.9 KiB
135 lines
2.9 KiB
#!/usr/bin/python |
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# inspired by: |
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# http://lodev.org/cgtutor/plasma.html |
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import sys |
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import time |
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import math |
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#import pygame |
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import colorsys |
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import blup.frame |
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import blup.output |
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class Plasma(object): |
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def __init__(self, width, height): |
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self.width = width |
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self.height = height |
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self.pixelvalues = [[0] * height for i in xrange(width)] |
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self.pixelsReady = False |
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self.offset = 0 |
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self.update() |
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@property |
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def minValue(self): |
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return min(map(min, self.pixelvalues)) |
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@property |
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def maxValue(self): |
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return max(map(max, self.pixelvalues)) |
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def applyPalette(self, palette): |
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min = self.minValue |
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max = self.maxValue |
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norm = lambda x: ((x - min) / max) |
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pixeldata = [ [None] * self.height for i in xrange(self.width) ] |
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for x in xrange(self.width): |
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rowvalues = self.pixelvalues[x] |
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for y in xrange(self.height): |
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pixeldata[x][y] = palette.getColorValue(norm(rowvalues[y])) |
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return pixeldata |
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def update(self): |
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#if self.pixelsReady: |
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# return |
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self.offset += 1 |
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for x in xrange(self.width): |
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for y in xrange(self.height): |
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xx = x+self.offset |
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yy = y+self.offset |
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p = 128 + 128 * math.sin(xx / 9.0) |
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p += 128 + 128 * math.sin(yy / 16.0) |
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p += 128 + 128 * math.sin((yy + xx) / 16.0) |
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p += 128 + 128 * math.sin(math.sqrt(yy*yy + xx*xx) / 16.0) |
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p += 128 + 8 * math.sin(math.sqrt(yy* xx) / 16.0) |
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self.pixelvalues[x][y] = p |
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self.pixelsReady = True |
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class Palette(object): |
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def __init__(self): |
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self.offset = 0 |
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self.cache = {} |
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def getColorValue(self, x): |
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x = round(x, 3) |
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if self.cache.has_key(x): |
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return self.cache[x] |
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c = colorsys.hsv_to_rgb((x + self.offset) % 1, 1, 1) |
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c = map(lambda x: int(x * 255), c) |
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self.cache[x] = c |
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return c |
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def update(self): |
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self.cache = {} |
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self.offset += 0.01 |
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if self.offset > 1: |
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self.offset -= 1 |
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############################################## |
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w = 22 |
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h = 16 |
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#w = 80 |
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#h = 18 |
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scalex = 30 |
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scaley = 60 |
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plasma = Plasma(w,h) |
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palette= Palette() |
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#screen = pygame.display.set_mode((w*scalex, h*scaley)) |
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#pygame.display.update() |
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#dim = blup.frame.FrameDimension(w, h, 8, 3) |
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dim = blup.frame.FrameDimension(w, h, 256, 3) |
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#out = blup.output.getOutput('serialblup:/dev/ttyUSB0:115200') |
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#out = blup.output.getOutput('colorfulshell') |
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#out = blup.output.getOutput('e3blp:bastel0:4242') |
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out = blup.output.getOutput('e3blp') |
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while True: |
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#screen.fill((0,0,0)) |
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#print 'updating palette...' |
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palette.update() |
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#print 'updating plasma...' |
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plasma.update() |
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#print 'applying palette...' |
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pixeldata = plasma.applyPalette(palette) |
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#print 'drawing...' |
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f = blup.frame.Frame(dim) |
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for x in xrange(w): |
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#rowdata = pixeldata[x] |
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for y in xrange(h): |
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#pygame.draw.rect(screen, pixeldata[x][y], (x*scalex, y*scaley, scalex, scaley), 0) |
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#pygame.draw.circle(screen, rowdata[y], (x, y), 1, 1) |
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i= f.setPixel(x, y, pixeldata[x][y]) |
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#print frame.channels, frame.depth |
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#print 'done drawing' |
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out.sendFrame(f) |
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#pygame.display.update() |
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#print 'done updating' |
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#time.sleep(0.05) |
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