def circle(center, radius, color=None, width=0):
points = []
x, y = center
angle, step = 0, math.pi/18
while angle < 2*math.pi:
dx, dy = (radius*math.sin(angle), radius*math.cos(angle))
points.append((x+dx, y+dy))
angle += step
polygon(points, color, width)
def circle(center, radius, color=None, width=0):
points = []
x, y = center
angle, step = 0, math.pi / 18
while angle < 2 * math.pi:
dx, dy = (radius * math.sin(angle), radius * math.cos(angle))
points.append((x + dx, y + dy))
angle += step
polygon(points, color, width)
def isin(value1, value2, amount):
'''Performs an inverse sin interpolation'''
amount = 1 - math.sin((1-amount)*math.pi_over_2)
return linear(value1, value2, amount)
def sin(value1, value2, amount):
'''Performs a sin interpolation'''
amount = math.sin(amount*math.pi_over_2)
return linear(value1, value2, amount)
def add_particle(self):
a = self.particle_life < 0
idxs = a.nonzero()
idx = -1
if len(idxs[0] > 0):
idx = idxs[0][0]
else:
raise Exception('Non Empty Particle')
self.particle_pos[idx][0] = self.origin[0] + self.pos_var[0] * rand()
self.particle_pos[idx][1] = self.origin[1] + self.pos_var[1] * rand()
self.particle_start_pos[idx][0] = self.origin[0]
self.particle_start_pos[idx][1] = self.origin[1]
a = math.radians(self.angle + self.angle_var * rand())
v = Vector2(math.cos(a), math.sin(a))
s = self.speed + self.speed_var * rand()
dir = v * s
self.particle_dir[idx][0] = dir[0]
self.particle_dir[idx][1] = dir[1]
self.particle_rad[
idx] = self.radial_accel + self.radial_accel_var * rand()
self.particle_tan[
idx] = self.tangential_accel + self.tangential_accel_var * rand()
life = self.particle_life[idx] = self.life + self.life_var * rand()
sr = self.start_color[0] + self.start_color_var[0] * rand()
sg = self.start_color[1] + self.start_color_var[1] * rand()
sb = self.start_color[2] + self.start_color_var[2] * rand()
sa = self.start_color[3] + self.start_color_var[3] * rand()
self.particle_color[idx][0] = sr
self.particle_color[idx][1] = sg
self.particle_color[idx][2] = sb
self.particle_color[idx][3] = sa
er = self.end_color[0] + self.end_color_var[0] * rand()
eg = self.end_color[1] + self.end_color_var[1] * rand()
eb = self.end_color[2] + self.end_color_var[2] * rand()
ea = self.end_color[3] + self.end_color_var[3] * rand()
delta_color_r = (er - sr) / life
delta_color_g = (eg - sg) / life
delta_color_b = (eb - sb) / life
delta_color_a = (ea - sa) / life
self.particle_delta_color[idx][0] = delta_color_r
self.particle_delta_color[idx][1] = delta_color_g
self.particle_delta_color[idx][2] = delta_color_b
self.particle_delta_color[idx][3] = delta_color_a
self.particle_size[idx] = self.size + self.size_var * rand()
self.particle_grav[idx][0] = self.gravity[0]
self.particle_grav[idx][1] = self.gravity[1]
self.particle_count += 1
def add_particle(self):
a = self.particle_life < 0
idxs = a.nonzero()
idx = -1
if len(idxs[0] > 0):
idx = idxs[0][0]
else:
raise Exception('Non Empty Particle')
self.particle_pos[idx][0] = self.origin[0] + self.pos_var[0]*rand()
self.particle_pos[idx][1] = self.origin[1] + self.pos_var[1]*rand()
self.particle_start_pos[idx][0] = self.origin[0]
self.particle_start_pos[idx][1] = self.origin[1]
a = math.radians(self.angle + self.angle_var*rand())
v = Vector2(math.cos(a), math.sin(a))
s = self.speed + self.speed_var*rand()
dir = v*s
self.particle_dir[idx][0] = dir[0]
self.particle_dir[idx][1] = dir[1]
self.particle_rad[idx] = self.radial_accel + self.radial_accel_var*rand()
self.particle_tan[idx] = self.tangential_accel + self.tangential_accel_var*rand()
life = self.particle_life[idx] = self.life + self.life_var * rand()
sr = self.start_color[0] + self.start_color_var[0]*rand()
sg = self.start_color[1] + self.start_color_var[1]*rand()
sb = self.start_color[2] + self.start_color_var[2]*rand()
sa = self.start_color[3] + self.start_color_var[3]*rand()
self.particle_color[idx][0] = sr
self.particle_color[idx][1] = sg
self.particle_color[idx][2] = sb
self.particle_color[idx][3] = sa
er = self.end_color[0] + self.end_color_var[0]*rand()
eg = self.end_color[1] + self.end_color_var[1]*rand()
eb = self.end_color[2] + self.end_color_var[2]*rand()
ea = self.end_color[3] + self.end_color_var[3]*rand()
delta_color_r = (er-sr)/life
delta_color_g = (eg-sg)/life
delta_color_b = (eb-sb)/life
delta_color_a = (ea-sa)/life
self.particle_delta_color[idx][0] = delta_color_r
self.particle_delta_color[idx][1] = delta_color_g
self.particle_delta_color[idx][2] = delta_color_b
self.particle_delta_color[idx][3] = delta_color_a
self.particle_size[idx] = self.size + self.size_var*rand()
self.particle_grav[idx][0] = self.gravity[0]
self.particle_grav[idx][1] = self.gravity[1]
self.particle_count += 1
def isin(value1, value2, amount):
'''Performs an inverse sin interpolation'''
amount = 1 - math.sin((1 - amount) * math.pi_over_2)
return linear(value1, value2, amount)
def sin(value1, value2, amount):
'''Performs a sin interpolation'''
amount = math.sin(amount * math.pi_over_2)
return linear(value1, value2, amount)
