class Renderer():
ORIGIN = QPoint(230, 230)
def __init__(self):
self.commands = None
self.animations = None
self.paths = []
self.angle = 0
self.position = Renderer.ORIGIN
def set_commands(self, cmds):
self.commands = cmds
def paint(self, painter):
if self.animations:
self.animations.draw_paths(painter)
def reset(self):
self.paths = []
self.angle = 0
self.position = Renderer.ORIGIN
def render(self, commands=None, loop=False):
if not loop:
self.reset()
if commands is None and self.commands is not None:
commands = self.commands
for i in range(len(commands)):
cmd = commands[i]
action = cmd.get('action', None)
magnitude = cmd.get('magnitude', None)
direction = cmd.get('direction', None)
x, y = self.position.x(), self.position.y()
if action == 'move':
self.move_action(cmd, x, y)
elif action == 'draw':
self.draw_action(cmd, x, y)
elif action == 'rotate':
self.rotate_action(magnitude)
elif action == 'jumpto':
self.jumpto_action(magnitude)
elif action == 'circle':
self.circle_action(magnitude, x, y)
elif action == 'repeat':
self.repeat_action(commands, magnitude, i)
elif action == 'endrepeat' or action == 'pass':
continue
else:
print("UNKNOWN RENDER ACTION")
break
def move_action(self, cmd, x, y):
magnitude = self.calculate_magnitude(cmd)
end_point = self.calculate_end_point(x, y, magnitude)
self.position = end_point
def draw_action(self, cmd, x, y):
magnitude = self.calculate_magnitude(cmd)
end_point = self.calculate_end_point(x, y, magnitude)
self.position = end_point
self.paths.append(LinePath(QPoint(x, y), end_point))
def rotate_action(self, angle):
self.angle += float(angle)
def jumpto_action(self, magnitude):
coords = magnitude.split(',')
x, y = self.normalize(int(coords[0])), self.normalize(int(coords[1]))
self.position = QPoint(x, y)
def normalize(self, i):
return min(max(i, 0), 460)
def circle_action(self, radius, x, y):
self.paths.append(CirclePath(x, y, float(radius)))
def repeat_action(self, commands, iterations, index):
start = index + 1 # Index of cmd after 'repeat' statement
end = len(commands) - start
looped_cmds = 0 # Amounts of commands within the loop
for j in range(end+(start)-1, start, -1):
if commands[j]['action'] == 'endrepeat':
end = j - 1 # Don't want to render 'endrepeat'
looped_cmds = end - start + 1
if int(iterations) == 0:
for j in range(looped_cmds+1):
commands[j] = {'action': 'pass'}
else:
looped_cmds_list = []
for j in range(int(iterations)-1):
for cmd_index in range(start, end+1):
looped_cmds_list.append(commands[cmd_index])
self.render(looped_cmds_list, loop=True)
def start_animations(self, speed):
self.animations = SequentialAnimationGroup(self.paths, speed)
self.animations.start_sequence()
def calculate_magnitude(self, cmd):
magnitude = int(cmd['magnitude'])
if 'b' in cmd['direction']:
magnitude *= -1
return magnitude
# Returns end point of line dependant on angle of drawing_point
def calculate_end_point(self, x, y, magnitude):
#angle = self.drawing_point.get_angle()
end_x = round(x + magnitude * sin(radians(self.angle)))
end_y = round(y - magnitude * cos(radians(self.angle)))
return QPoint(end_x, end_y)
def get_x(self):
return self.position.x()
def get_y(self):
return self.position.y()
def start_animations(self, speed): self.animations = SequentialAnimationGroup(self.paths, speed) self.animations.start_sequence()