stuff
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eedf8e7ac5
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42
hyphae.py
42
hyphae.py
@ -10,19 +10,23 @@ WIDTH, HEIGHT = 1000, 1000
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ANGLE_RANDOM_MIN = -0.6
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ANGLE_RANDOM_MAX = 0.6
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# how much to shrink each consecutive circle
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SHRINK = 0.00004
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SHRINK = 0.00002
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class Branch():
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def __init__(self, idx, ctx, x, y, r, ang):
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ctx.set_source_rgb(255, 0, 0)
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#ctx.set_source_rgb(255, 0, 0)
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self.nodes = [Node(ctx, x, y, r, ang, dry=True)]
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ctx.set_source_rgb(0,0, 0)
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#ctx.set_source_rgb(0,0, 0)
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self.idx = idx
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self.ctx = ctx
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self.ended = False
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self.ignores = []
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self.first = True
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def _last_node(self):
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return self.nodes[-1]
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def set_ignores(self, ignores):
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self.ignores = ignores
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def place_next(self, branches):
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if not self.ended:
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last = self._last_node()
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@ -34,7 +38,8 @@ class Branch():
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self.ended = True
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return False
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# did we hit canvas edge?
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if next_x + next_r > 1 or next_x - next_r < 0:
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# if next_x + next_r > 1 or next_x - next_r < 0:
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if (math.pow(next_x - 0.5, 2) + math.pow(next_y - 0.5, 2)) > math.pow(0.4, 2):
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self.ended = True
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return False
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if next_y + next_r > 1 or next_y - next_r < 0:
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@ -44,14 +49,18 @@ class Branch():
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# did we hit another circle?
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for branch in branches:
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for node in branch.nodes:
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if node not in last_nodes: #!= last and node != self.nodes[-2]:
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if node not in last_nodes and node not in self.ignores: #!= last and node != self.nodes[-2]:
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if circles_intersect(node.x, node.y, node.r,
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next_x, next_y, next_r):
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self.ended = True
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return False
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next_ang = last.ang + random.uniform(ANGLE_RANDOM_MIN, ANGLE_RANDOM_MAX)
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next_ang = last.ang + (random.uniform(ANGLE_RANDOM_MIN, ANGLE_RANDOM_MAX) * (1 - 40*last.r))
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self.nodes.append(Node(self.ctx, next_x, next_y, next_r, next_ang))
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if self.first:
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self.first = False
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first = self.nodes[0]
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circle_fill(self.ctx, first.x, first.y, first.r)
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return True
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def circles_intersect(x1, y1, r1, x2, y2, r2):
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@ -72,31 +81,35 @@ class Node():
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return self.x != other.x or self.y != other.y or self.r != other.r or self.ang != other.ang
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def grow_subs(ctx, subs, branches):
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source = ctx.get_source()
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new_subs = []
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created = False
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for branch in subs:
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# create a sub branch based on length
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sub_branches = len(branch.nodes) // 10
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sub_branches = len(branch.nodes) // 7 * 2
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print(f'creating {sub_branches} subs')
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if sub_branches > 1:
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created = True
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for i in range(sub_branches):
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for n in range(15): # attempts at growing branches
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for n in range(60): # attempts at growing branches
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start_node = random.choice(branch.nodes)
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# start perpendicular to our last angle
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start_angle = start_node.ang + random.choice([90, -90]) + random.uniform(-5, 5)
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start_x = start_node.r * math.sin(start_angle) + start_node.x
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start_y = start_node.r * math.cos(start_angle) + start_node.y
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start_r = start_node.r - 0.002
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start_angle = start_node.ang + random.choice([90, -90]) + random.uniform(-30, 30)
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start_x = (start_node.r * 1.2) * math.sin(start_angle) + start_node.x
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start_y = (start_node.r * 1.2) * math.cos(start_angle) + start_node.y
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start_r = start_node.r * 0.8
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new_branch = Branch(i, ctx, start_x, start_y, start_r, start_angle)
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if new_branch.place_next(branches):
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break
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new_branch.set_ignores(branch.nodes)
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branches.append(new_branch)
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new_subs.append(new_branch)
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if not created:
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return
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while not all([branch.ended for branch in new_subs]):
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for branch in new_subs:
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branch.place_next(branches)
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branch.place_next([b for b in branches if b != branch])
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return new_subs
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def main():
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@ -110,7 +123,7 @@ def main():
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#for b in range(6):
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# start_x = random.uniform(0.2, 0.8)
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# start_y = random.uniform(0.2, 0.8)
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start_r = 0.015
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start_r = 0.01
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# start_angle = random.randint(0, 360)
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# branches.append(Branch(b, ctx, start_x, start_y, start_r, start_angle))
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branches.append(Branch(0, ctx, 0.5, 0.4, start_r, 180))
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@ -128,6 +141,7 @@ def main():
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for x in range(8):
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if subs == None:
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return
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ctx.set_source_rgb(0.0, 0.0, 0.1*x)
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subs = grow_subs(ctx, subs, branches)
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surface.write_to_png("out/hyphae.png") # Output to PNG
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input('next')
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28
waves.py
28
waves.py
@ -33,7 +33,7 @@ def days_color(date):
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days_in_year = 365 + calendar.isleap(year)
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# between 0 and 1, how far through the year are we?
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progress = today/days_in_year
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return colorsys.hsv_to_rgb(progress, 1, 1)
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return colorsys.hsv_to_rgb(progress, 1, 0.9)
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def days_amp(date, waves):
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day = date.day
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@ -44,17 +44,17 @@ def days_amp(date, waves):
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def days_count(date):
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return date.month
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def main():
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def create_wpotd(output):
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surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, WIDTH, HEIGHT)
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ctx = cairo.Context(surface)
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ctx.scale(WIDTH, HEIGHT) # Normalizing the canvas
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#ctx.set_antialias(cairo.Antialias.BEST)
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step_size = 1/PRECISION
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lastpoints = [(x/PRECISION, 0) for x in range(PRECISION+1)]
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#date = datetime.datetime.strptime('2021-01-01', '%Y-%m-%d')
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#date = datetime.datetime.strptime('2021-06-30', '%Y-%m-%d')
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date = datetime.datetime.today()
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frequency = random.randint(10, 40)
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if DATE_BASED_COUNT:
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@ -65,11 +65,6 @@ def main():
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amplitude = days_amp(date, waves)
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else:
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amplitude = 25
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if DARK_BG:
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# make bg black
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ctx.rectangle(0, 0, 1, 1)
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ctx.set_source_rgb(0, 0, 0)
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ctx.fill()
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if MONOCHROME:
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if DATE_BASED_COLOR:
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@ -77,6 +72,11 @@ def main():
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else:
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r, g, b = random_color()
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alpha_step = 1/waves
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if DARK_BG:
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# make bg black
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ctx.rectangle(0, 0, 1, 1)
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ctx.set_source_rgb(0, 0, 0)
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ctx.fill()
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wave_height = 1/waves
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for num in range(waves+1):
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@ -86,9 +86,9 @@ def main():
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x = 0
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while x < 1:
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y = amplitude * math.sin(frequency * x + (num * WAVE_OFFSET) )
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points.append((x, ( (y) + ((0.5+num)*wave_height))))
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points.append((x, ( y + (0.5+num)*wave_height)))
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x += step_size
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print(f'Draw {len(points)} points for curve {num}')
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#print(f'Draw {len(points)} points for curve {num}')
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if not MONOCHROME:
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ctx.set_source_rgb(r, g, b)
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else:
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@ -97,14 +97,18 @@ def main():
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ctx.move_to(*points[0])
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for p in points[1:]:
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ctx.line_to(*p)
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ctx.set_line_width(0.0004)
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ctx.stroke_preserve()
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for p in reversed(lastpoints):
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ctx.line_to(*p)
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ctx.line_to(*points[0])
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ctx.fill()
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lastpoints = points
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surface.write_to_png(output) # Output to PNG
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surface.write_to_png("out/waves.png") # Output to PNG
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def main():
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create_wpotd('out/waves.png')
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if __name__ == '__main__':
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main()
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