def lifecycle():
# Update background color
global backgroundHue
backgroundHue = (backgroundHue + 0.0002) % 1
particles[0]['color'] = model.hsv(backgroundHue, 0.8, 0.2)
# Update particle state
for i, p in enumerate(particles):
if (p.get('bloomTimer')>0):
# Particle is blooming
particles[i]['bloomTimer'] -= 1
if (p['bloomTimer'] <= 0):
# Done blooming. Start life cycle
particles[i]['lifeTimer'] = totalLife
particles[i]['intensity'] = 1
#particles[i]['falloff'] = 0
particles[i]['point'] = randomPoint()
particles[i]['bloomTimer'] = None
if (p.get('lifeTimer')>0):
# Particle is alive. Update intensity.
# Particles go through a life cycle with positive and negative intensity
particles[i]['intensity'] = intensity * sin(p['lifeTimer'] * 2 * pi / totalLife)
# Collapse into the center
particles[i]['point'][0] = p['point'][0] * zoom
particles[i]['point'][1] = p['point'][1] * zoom
particles[i]['point'][2] = p['point'][2] * zoom
particles[i]['lifeTimer'] -= 1
if (p['lifeTimer'] <= 0):
# Particle is dead. Go back to blooming.
particles[i]['bloomTimer'] = newBloomTimer()
particles[i]['lifeTimer'] = None
model.map_particles(particles, mod)
def randomPoint():
#A random point somewhere relevant on our model
return [
4 * (random() - 0.5),
1 * (random() - 0.5),
4 * (random() - 0.5)
]
# Create other nascent particles that 'bloom' once a timer runs out
for i in range(numParticles):
particles.append({
'point': (0, 0, 0),
'intensity': 0,
'falloff': 20, # how wide the glow / faded area
'color': model.hsv(random(), 0.6, 0.8),
'bloomTimer': newBloomTimer()
})
def lifecycle():
# Update background color
global backgroundHue
backgroundHue = (backgroundHue + 0.0002) % 1
particles[0]['color'] = model.hsv(backgroundHue, 0.8, 0.2)
# Update particle state
for i, p in enumerate(particles):
if (p.get('bloomTimer')>0):