File indexing completed on 2025-01-19 04:00:00 

0001 #!/usr/bin/env python3
0002 import sys
0003 import os
0004 import random
0005 import math
0006 
0007 sys.path.insert(0, os.path.join(
0008     os.path.dirname(os.path.dirname(os.path.abspath(__file__))),
0009     "lib"
0010 ))
0011 from lottie.utils import script
0012 from lottie import objects
0013 from lottie.objects import easing
0014 from lottie import Point, Color, Size, PolarVector
0015 from lottie.utils import animation as anutils
0016 
0017 
0018 last_frame = 120
0019 an = objects.Animation(last_frame)
0020 layer = objects.ShapeLayer()
0021 an.insert_layer(0, layer)
0022 
0023 color1 = Color(1, 0.98, 0.282)
0024 color2 = Color(1, 0.341, 0.016)
0025 color3 = Color(0.698, 0.114, 0.02)
0026 particle_start = Point(256, 256)
0027 particle_size = Point(20, 20)
0028 particle_end = Point(256, -particle_size.y*2)
0029 start_len_min = 0
0030 start_len_max = 128
0031 opacity_start = 100
0032 opacity_end = 20
0033 
0034 
0035 def particle():
0036     g = layer.add_shape(objects.Group())
0037     b = g.add_shape(objects.Ellipse())
0038     fill = objects.Fill()
0039     g.add_shape(fill)
0040     t = random.random()
0041 
0042     if t < 1/2:
0043         lf = t * 2
0044         fill.color.add_keyframe(0, color1.lerp(color2, lf))
0045         fill.color.add_keyframe(last_frame*t, color2)
0046         fill.color.add_keyframe((1 - t) * last_frame, color3, easing.Jump())
0047         fill.color.add_keyframe((1 - t) * last_frame+1, color1)
0048         fill.color.add_keyframe(last_frame, color1.lerp(color2, lf))
0049     else:
0050         lf = (t-0.5) * 2
0051         tf = (1-lf)/2
0052         fill.color.add_keyframe(0, color2.lerp(color3, lf))
0053         fill.color.add_keyframe(last_frame*tf, color3, easing.Jump())
0054         fill.color.add_keyframe(last_frame*tf+1, color1)
0055         fill.color.add_keyframe((.5 + tf) * last_frame, color2)
0056         fill.color.add_keyframe(last_frame, color2.lerp(color3, lf))
0057 
0058     fill.opacity.add_keyframe(0, opacity_start + (opacity_end - opacity_start) * t)
0059     fill.opacity.add_keyframe((1 - t) * last_frame, opacity_end)
0060     fill.opacity.add_keyframe((1 - t) * last_frame+1, opacity_start)
0061     fill.opacity.add_keyframe(last_frame, opacity_start + (opacity_end - opacity_start) * t)
0062 
0063     bezier = objects.Bezier()
0064     outp = PolarVector(random.uniform(start_len_min, start_len_max), random.random() * math.pi)
0065     inp = Point(0,  random.random() * (particle_end.y - particle_start.y) / 3)
0066     bezier.add_point(particle_start, outp=outp)
0067     bezier.add_point(particle_end, outp)
0068 
0069     b.size.value = particle_size
0070     anutils.follow_path(b.position, bezier, 0, last_frame, 10, start_t=t)
0071 
0072 for i in range(100):
0073     particle()
0074 
0075 script.script_main(an)
0076