villares 2019-03-17 22:08:14 -03:00
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# -*- coding: utf-8 -*-
ROTATION = {0: 0,
BOTTOM: 0,
DOWN: 0,
1: HALF_PI,
LEFT: HALF_PI,
2: PI,
TOP: PI,
UP: PI,
3: PI + HALF_PI,
RIGHT: PI + HALF_PI,
BOTTOM + RIGHT: 0,
DOWN + RIGHT: 0,
DOWN + LEFT: HALF_PI,
BOTTOM + LEFT: HALF_PI,
TOP + LEFT: PI,
UP + LEFT: PI,
TOP + RIGHT: PI + HALF_PI,
UP + RIGHT: PI + HALF_PI,
}
def quarter_circle(x, y, radius, quadrant):
circle_arc(x, y, radius, ROTATION[quadrant], HALF_PI)
def half_circle(x, y, radius, quadrant):
circle_arc(x, y, radius, ROTATION[quadrant], PI)
def circle_arc(x, y, radius, start_ang, sweep_ang):
arc(x, y, radius * 2, radius * 2, start_ang, start_ang + sweep_ang)
def poly_arc(x, y, radius, start_ang, sweep_ang, num_points=2):
angle = sweep_ang / int(num_points)
a = start_ang
with beginShape():
while a <= start_ang + sweep_ang:
sx = x + cos(a) * radius
sy = y + sin(a) * radius
vertex(sx, sy)
a += angle
def arc_poly(x, y, d, _, start_ang, end_ang, num_points=5):
sweep_ang = end_ang - start_ang
angle = sweep_ang / int(num_points)
a = start_ang
with beginShape():
while a <= end_ang:
sx = x + cos(a) * d / 2
sy = y + sin(a) * d / 2
vertex(sx, sy)
a += angle
def bar(x1, y1, x2, y2, thickness=None, shorter=0, ends=(1, 1)):
"""
O código para fazer as barras, dois pares (x, y),
um parâmetro de encurtamento: shorter
"""
L = dist(x1, y1, x2, y2)
if not thickness:
thickness = 10
with pushMatrix():
translate(x1, y1)
angle = atan2(x1 - x2, y2 - y1)
rotate(angle)
offset = shorter / 2
line(thickness / 2, offset, thickness / 2, L - offset)
line(-thickness / 2, offset, -thickness / 2, L - offset)
if ends[0]:
half_circle(0, offset, thickness / 2, UP)
if ends[1]:
half_circle(0, L - offset, thickness / 2, DOWN)
def var_bar(p1x, p1y, p2x, p2y, r1, r2=None):
if r2 is None:
r2 = r1
d = dist(p1x, p1y, p2x, p2y)
if d > 0:
with pushMatrix():
translate(p1x, p1y)
angle = atan2(p1x - p2x, p2y - p1y)
rotate(angle + HALF_PI)
ri = r1 - r2
beta = asin(ri / d) + HALF_PI
x1 = cos(beta) * r1
y1 = sin(beta) * r1
x2 = cos(beta) * r2
y2 = sin(beta) * r2
# with pushStyle():
# noStroke()
# beginShape()
# vertex(-x1, -y1)
# vertex(d - x2, -y2)
# vertex(d, 0)
# #vertex(d - x2, +y2, 0)
# #vertex(-x1, +y1, 0)
# #vertex(0, 0, 0)
# endShape()
line(-x1, -y1, d - x2, -y2)
line(-x1, +y1, d - x2, +y2)
arc(0, 0, r1 * 2, r1 * 2,
-beta - PI, beta - PI)
arc(d, 0, r2 * 2, r2 * 2,
beta - PI, PI - beta)
else:
ellipse(p1x, p1y, r1 * 2, r1 * 2)
ellipse(p2y, p2x, r2 * 2, r2 * 2)
def poly_rounded(P, r0, r1=None, r2=None):
r1 = r0 if not r1 else r1
r2 = r0 if not r2 else r2
a = [0] * 3
d, d1, d2 = 2 * r0, 2 * r1, 2 * r2
a[0] = atan2(P[1].y - P[0].y, P[1].x - P[0].x) - HALF_PI
a[1] = atan2(P[2].y - P[1].y, P[2].x - P[1].x) - HALF_PI
a[2] = atan2(P[0].y - P[2].y, P[0].x - P[2].x) - HALF_PI
start = a[2] if a[2] < a[0] else a[2] - TWO_PI
arc(P[0].x, P[0].y, d, d, start, a[0])
start = a[0] if a[0] < a[1] else a[0] - TWO_PI
arc(P[1].x, P[1].y, d1, d1, start, a[1])
start = a[1] if a[1] < a[2] else a[1] - TWO_PI
arc(P[2].x, P[2].y, d2, d2, start, a[2])
p01 = PVector(P[0].x + r0 * cos(a[0]), P[0].y + r0 * sin(a[0]))
p10 = PVector(P[1].x + r1 * cos(a[0]), P[1].y + r1 * sin(a[0]))
p12 = PVector(P[1].x + r1 * cos(a[1]), P[1].y + r1 * sin(a[1]))
p21 = PVector(P[2].x + r2 * cos(a[1]), P[2].y + r2 * sin(a[1]))
p20 = PVector(P[2].x + r2 * cos(a[2]), P[2].y + r2 * sin(a[2]))
p02 = PVector(P[0].x + r0 * cos(a[2]), P[0].y + r0 * sin(a[2]))
with pushStyle():
noStroke()
with beginClosedShape():
vertex(P[0].x, P[0].y)
vertex(p02.x, p02.y)
vertex(p20.x, p20.y)
vertex(P[2].x, P[2].y)
vertex(p21.x, p21.y)
vertex(p12.x, p12.y)
vertex(P[1].x, P[1].y)
vertex(p10.x, p10.y)
vertex(p01.x, p01.y)
line(p01.x, p01.y, p10.x, p10.y)
line(p12.x, p12.y, p21.x, p21.y)
line(p20.x, p20.y, p02.x, p02.y)

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"""
Alexandre B A Villares http://abav.lugaralgum.com - GPL v3
A helper for the Processing gifAnimation library https://github.com/extrapixel/gif-animation/tree/3.0
Download from https://github.com/villares/processing-play/blob/master/export_GIF/unzip_and_move_to_libraries_GifAnimation.zip
This helper was inspired by an example by Art Simon https://github.com/APCSPrinciples/AnimatedGIF/
# add at the start of your sketch:
add_library('gifAnimation')
from gif_exporter import gif_export
# add at the end of draw():
gif_export(GifMaker)
"""
def gif_export(GifMaker, # gets a reference to the library
filename="exported", # .gif will be added
repeat=0, # 0 makes it an "endless" animation
quality=255, # quality range 0 - 255
delay=1200, # this is quick
frames=0, # 0 will stop on keyPressed or frameCount >= 100000
finish=False): # force stop
global gifExporter
try:
gifExporter
except NameError:
gifExporter = GifMaker(this, filename + ".gif")
gifExporter.setRepeat(repeat)
gifExporter.setQuality(quality)
gifExporter.setDelay(delay)
gifExporter.addFrame()
if frames == 0:
if keyPressed and key == "e":
finish = True
if finish:
gifExporter.finish()
print("gif saved")
exit()

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# Alexandre B A Villares - https://abav.lugaralgum.com/sketch-a-day
SKETCH_NAME, OUTPUT = "sketch_190317a", ".gif"
"""
Based on sketch_190214a
"""
from collections import namedtuple, deque
import copy as cp
add_library('GifAnimation')
from gif_exporter import gif_export
add_library('peasycam')
from arcs import var_bar, poly_rounded
import random as rnd
SPACING, MARGIN = 100, 100
X_LIST, Y_LIST = [], [] # listas de posições para elementos
desenho_atual, outro_desenho, desenho_inicial = [], [], []
NUM_NODES = 4 # número de elementos do desenho / number of nodes
Node = namedtuple('Node', 'x y t_size s_weight points_to')
end_mode = False
strips = 10
history = deque(maxlen=40)
def setup():
global desenho
smooth(16)
size(600, 600, P3D)
colorMode(HSB)
rectMode(CENTER)
noFill()
cam = PeasyCam(this, 600)
X_LIST[:] = [x for x in range(MARGIN, 1 + width - MARGIN, SPACING)]
Y_LIST[:] = [y for y in range(MARGIN, 1 + height - MARGIN, SPACING)]
novo_desenho(desenho_atual)
desenho_inicial[:] = cp.deepcopy(desenho_atual)
desenho = desenho_atual
def draw():
global strips, desenho, desenho_atual, outro_desenho, end_mode
#translate(0, -600)
#rotateX(HALF_PI / 2)
translate(-width/2, -height/2)
background(200)
fc = frameCount % 100 - 50
#print(fc)
history.append(cp.deepcopy(desenho))
for i, d in enumerate(history):
translate(0, 0, -10)
strips = 10 + 10 * sin((i + frameCount) * TWO_PI / 50.)
desenho_plot(d)
# if frameCount > 50:
# gif_export(GifMaker, filename=SKETCH_NAME, delay=200)
#strips += 1
if fc < 0:
desenho = desenho_atual
elif 0 <= fc < 50:
desenho = make_inter_nodes(map(fc, 0, 49, 0, 1))
if fc == 49:
desenho_atual, outro_desenho = outro_desenho, desenho_atual
desenho = desenho_atual
if end_mode:
exit()
if frameCount == 100:
make_nodes_point(outro_desenho)
else:
print("will reset")
end_mode = True
outro_desenho[:] = cp.deepcopy(desenho_inicial)
def keyPressed():
global save_frames
if key == 'g':
gif_export(GifMaker, filename=SKETCH_NAME)
if key == 'r':
make_nodes_point(desenho_atual)
if key == 'n':
novo_desenho(desenho_atual)
def novo_desenho(desenho):
"""
esvazia a lista elementos (setas e linhas) do desenho anterior
clears the list of nodes and creates a a new drawing appending desenho_atual,
a list of nodes/drawing elements: specials, connecting lines and lonely nodes
"""
desenho[:] = []
for _ in range(NUM_NODES):
desenho.append(new_node())
make_nodes_point(desenho)
outro_desenho[:] = cp.deepcopy(desenho)
make_nodes_point(outro_desenho)
def new_node():
return Node( # elemento/"nó" uma namedtuple com:
rnd.choice(X_LIST), # x
rnd.choice(Y_LIST), # y
rnd.choice([10, 20, 30]), # t_size (tail/circle size)
rnd.choice([2, 4, 6]), # s_weight
[] # points_to... (lista com ref. a outro elem.))
)
def make_nodes_point(desenho):
for node in desenho: # para cada elemento do desenho
node.points_to[:] = []
node.points_to.append(new_node())
node.points_to.append(new_node())
def desenho_plot(d):
for node in d:
p1, p2 = node.points_to # se estiver apontando para alguém
# strokeWeight(node.s_weight)
with pushMatrix():
for i in range(2):
c = 128 + 128 * sin(frameCount * TWO_PI / 50. + PI * i)
#print(c)
stroke(c)
strokeWeight(2)
translate(0, 0, node.s_weight)
poly_rounded([node, p1, p2], (node.s_weight + i) * strips)
# def mouseWheel(E):
# global strips
# strips += int(E.getAmount())
# print(strips)
def make_inter_nodes(amt):
desenho_inter = []
for n1, n2 in zip(desenho_atual, outro_desenho):
desenho_inter.append(Node( # elemento/"nó" uma namedtuple com:
n1.x, # x
n1.y, # y
n1.t_size, # t_size (tail/circle size)
n1.s_weight, # s_weight (espessura da linha)
[PVector(lerp(p1.x, p2.x, amt), lerp(p1.y, p2.y, amt))
for p1, p2 in zip(n1.points_to, n2.points_to)]
))
return desenho_inter
# print text to add to the project's README.md
def settings():
println(
"""
![{0}](2019/{0}/{0}{1})
[{0}](https://github.com/villares/sketch-a-day/tree/master/2019/{0}) [[Py.Processing](https://villares.github.io/como-instalar-o-processing-modo-python/index-EN)]
""".format(SKETCH_NAME, OUTPUT)
)

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@ -25,6 +25,12 @@ Get updates from my sort-of-weekly newsletter: [[sketch-mail](https://villares.o
---
![sketch_190317a](2019/sketch_190317a/sketch_190317a.gif)
[sketch_190317a](https://github.com/villares/sketch-a-day/tree/master/2019/sketch_190317a) [[Py.Processing](https://villares.github.io/como-instalar-o-processing-modo-python/index-EN)]
---
![sketch_190316a](2019/sketch_190316a/sketch_190316a.gif)
[sketch_190316a](https://github.com/villares/sketch-a-day/tree/master/2019/sketch_190316a) [[Py.Processing](https://villares.github.io/como-instalar-o-processing-modo-python/index-EN)]