#! python2
# Piano
#
# A simple multi-touch piano.
from scene import *
import sound
from itertools import chain
class Key (object):
def __init__(self, frame):
self.frame = frame
self.name = None
self.touch = None
self.color = Color(1, 1, 1)
self.highlight_color = Color(0.9, 0.9, 0.9)
def hit_test(self, touch):
return touch.location in self.frame
class Piano (Scene):
def setup(self):
self.white_keys = []
self.black_keys = []
white_key_names = ['Piano_C3','Piano_D3', 'Piano_E3',
'Piano_F3', 'Piano_G3', 'Piano_A3',
'Piano_B3', 'Piano_C4', 'Piano_D4',
'Piano_E4', 'Piano_F4', 'Piano_G4']
#white_key_names_nogniiet = #['Piano_02','Piano_D2','Piano_E2','Piano_F2','Piano_G2','Piano_A2','Piano_B2','Piano_C3']
black_key_names = ['Piano_C3#', 'Piano_D3#', 'Piano_F3#',
'Piano_G3#', 'Piano_A3#', 'piano:C4#',
'Piano_D4#', 'Piano_F4#']
for key_name in chain(white_key_names, black_key_names):
sound.load_effect(key_name)
white_positions = range(12)
black_positions = [0.5, 1.5, 3.5, 4.5, 5.5, 7.5, 8.5, 10.5]
key_w = self.size.w / 2# pkhg factor 0.5
key_h = self.size.h / 8 /2
for i in range(len(white_key_names)):
pos = white_positions[i]
key = Key(Rect(0, pos * key_h, key_w, key_h))
key.name = white_key_names[i]
self.white_keys.append(key)
for i in range(len(black_key_names)):
pos = black_positions[i]
key = Key(Rect(0, pos * key_h + 10, key_w * 0.6, key_h - 20))
key.name = black_key_names[i]
key.color = Color(0, 0, 0)
key.highlight_color = Color(0.2, 0.2, 0.2)
self.black_keys.append(key)
def draw(self):
stroke_weight(1)
stroke(0.5, 0.5, 0.5)
for key in chain(self.white_keys, self.black_keys):
if key.touch is not None:
fill(*key.highlight_color.as_tuple())
else:
fill(*key.color.as_tuple())
rect(*key.frame.as_tuple())
def touch_began(self, touch):
for key in chain(self.black_keys, self.white_keys):
if key.hit_test(touch):
key.touch = touch
sound.play_effect(key.name)
return
def touch_moved(self, touch):
hit_key = None
for key in chain(self.black_keys, self.white_keys):
hit = key.hit_test(touch)
if hit and hit_key is None:
hit_key = key
if key.touch is None:
key.touch = touch
sound.play_effect(key.name)
if key.touch == touch and key is not hit_key:
key.touch = None
def touch_ended(self, touch):
for key in chain(self.black_keys, self.white_keys):
if key.touch == touch:
key.touch = None
run(Piano(), PORTRAIT)
Append the Piano till G4
