kopia lustrzana https://github.com/villares/sketch-a-day
190708
villares
rodzic
70a2cdfede
commit
3b0c31eb00
|
|
@ -1,5 +1,11 @@
|
|||
# Alexandre B A Villares - https://abav.lugaralgum.com/sketch-a-day
|
||||
# More explorations of inerpolated combinations in grids
|
||||
"""
|
||||
More explorations of inerpolated combinations in grids
|
||||
- Number of possible bars on a 2x2 grid: 12
|
||||
- Number of 3-bar combinations: 220
|
||||
- Cols: 20 Rows: 11
|
||||
- Interpolating 2 intermediares each bar pair
|
||||
"""
|
||||
|
||||
from random import shuffle
|
||||
from itertools import product, combinations, permutations, combinations_with_replacement
|
||||
|
|
@ -10,27 +16,28 @@ position = 0 # initial position
|
|||
|
||||
|
||||
def setup():
|
||||
global line_combos, W, H, position, num
|
||||
global bar_combos, W, H, position, num
|
||||
size(1122, 628)
|
||||
frameRate(1)
|
||||
rectMode(CENTER)
|
||||
strokeWeight(2)
|
||||
grid = product(range(-1, 1), repeat=2) # 2X2
|
||||
# all line combinations on a grid
|
||||
lines = permutations(grid, 2)
|
||||
# allow only some lines
|
||||
possible_lines = []
|
||||
for l in lines:
|
||||
bars = permutations(grid, 2)
|
||||
# allow only some bars
|
||||
possible_bars = []
|
||||
for l in bars:
|
||||
(x0, y0), (x1, y1) = l[0], l[1]
|
||||
if dist(x0, y0, x1, y1) < 2: # rule defined here...
|
||||
possible_lines.append(l)
|
||||
num_possible_lines = len(possible_lines)
|
||||
println("Number of possible lines: {}".format(num_possible_lines))
|
||||
possible_bars.append(l)
|
||||
num_possible_bars = len(possible_bars)
|
||||
println("Number of possible bars on a 2x2 grid: {}".format(num_possible_bars))
|
||||
# main stuff
|
||||
line_combos = list(combinations(possible_lines, 3))
|
||||
# shuffle(line_combos) # ucomment to shuffle!
|
||||
num = len(line_combos)
|
||||
println("Number of combinations: {}".format(num))
|
||||
n_bars = 3
|
||||
bar_combos = list(combinations(possible_bars, n_bars))
|
||||
# shuffle(bar_combos) # ucomment to shuffle!
|
||||
num = len(bar_combos)
|
||||
println("Number of {}-bar combinations: {}".format(n_bars, num))
|
||||
W = (width - border * 2) // space
|
||||
H = (height - border * 2) // space
|
||||
println("Cols: {} Rows: {} Visible grid: {}".format(W, H, W * H))
|
||||
|
|
@ -42,7 +49,7 @@ def draw():
|
|||
i = position
|
||||
for y in range(H):
|
||||
for x in range(W):
|
||||
if i < len(line_combos):
|
||||
if i < len(bar_combos):
|
||||
pushMatrix()
|
||||
# B option
|
||||
# translate(border / 2 + space + space * x,
|
||||
|
|
@ -52,7 +59,7 @@ def draw():
|
|||
draw_combo(i)
|
||||
popMatrix()
|
||||
i += 1
|
||||
if i < len(line_combos):
|
||||
if i < len(bar_combos):
|
||||
# gif_export(GifMaker, SKETCH_NAME)
|
||||
# gif_export(GifMaker, SKETCH_NAME[:-1] + "b") # B option
|
||||
position += H * W
|
||||
|
|
@ -62,11 +69,11 @@ def draw_combo(n):
|
|||
blendMode(MULTIPLY)
|
||||
noStroke()
|
||||
siz = space / 2. # B option
|
||||
line_combo = line_combos[n]
|
||||
combo_len = len(line_combo)
|
||||
for i, single_line in enumerate(line_combo):
|
||||
bar_combo = bar_combos[n]
|
||||
combo_len = len(bar_combo)
|
||||
for i, single_line in enumerate(bar_combo):
|
||||
ni = (i + 1) % combo_len
|
||||
next_line = line_combo[ni]
|
||||
next_line = bar_combo[ni]
|
||||
for j in range(4):
|
||||
c = lerpColor(color(i * 64, 128, 128), color(ni * 64, 128, 128), j)
|
||||
fill(c)
|
||||
|
|
|
|||
Plik binarny nie jest wyświetlany.
|
Po Szerokość: | Wysokość: | Rozmiar: 276 KiB |
|
|
@ -0,0 +1,101 @@
|
|||
# Alexandre B A Villares - https://abav.lugaralgum.com/sketch-a-day
|
||||
"""
|
||||
More explorations of inerpolated combinations in grids
|
||||
- Number of possible bars on a 2x2 grid: 12
|
||||
- Number of 2-bar combinations: 66
|
||||
- Cols: 11 Rows: 6
|
||||
- Interpolating 6 intermediary bars (total of 8 bars drawn)
|
||||
- Overlapping slightly the combinations
|
||||
"""
|
||||
|
||||
from random import shuffle
|
||||
from itertools import product, combinations, permutations
|
||||
from var_bar import var_bar
|
||||
|
||||
space, border = 80, 80
|
||||
position = 0 # initial position
|
||||
radius_a, radius_b = space / 8, space / 16
|
||||
|
||||
def setup():
|
||||
global bar_combos, W, H, position, num
|
||||
size(960, 560)
|
||||
frameRate(1)
|
||||
rectMode(CENTER)
|
||||
grid = product(range(-1, 1), repeat=2) # 2X2 grid
|
||||
# all bar possibilities on a grid (they have a direction)
|
||||
bars = permutations(grid, 2)
|
||||
# allow only some bars
|
||||
possible_bars = []
|
||||
for l in bars: # filter not applicable on this sketch
|
||||
# (x0, y0), (x1, y1) = l[0], l[1]
|
||||
# if dist(x0, y0, x1, y1) < 2: # rule defined here...
|
||||
possible_bars.append(l)
|
||||
num_possible_bars = len(possible_bars)
|
||||
println("Number of possible bars on a 2x2 grid: {}".format(num_possible_bars))
|
||||
# main stuff
|
||||
n_bars = 2
|
||||
bar_combos = list(combinations(possible_bars, n_bars))
|
||||
# shuffle(bar_combos) # ucomment to shuffle!
|
||||
num = len(bar_combos)
|
||||
println("Number of {}-bar combinations: {}".format(n_bars, num))
|
||||
W = (width - border) // space
|
||||
H = (height - border) // space
|
||||
println("Cols: {} Rows: {} Visible grid: {}".format(W, H, W * H))
|
||||
|
||||
|
||||
def draw():
|
||||
global position
|
||||
background(240)
|
||||
i = position
|
||||
for y in range(H):
|
||||
for x in range(W):
|
||||
if i < len(bar_combos):
|
||||
pushMatrix()
|
||||
translate(border + space / 2 + space * x,
|
||||
border + space / 2 + space * y)
|
||||
draw_combo(i)
|
||||
popMatrix()
|
||||
i += 1
|
||||
if i < len(bar_combos):
|
||||
# gif_export(GifMaker, SKETCH_NAME)
|
||||
# gif_export(GifMaker, SKETCH_NAME[:-1] + "b") # B option
|
||||
position += H * W
|
||||
|
||||
def draw_combo(n):
|
||||
noFill()
|
||||
stroke(0, 0, 100, 200)
|
||||
# noStroke()
|
||||
# fill(100, 100)
|
||||
siz = space #/ 2. # B option
|
||||
first_line = bar_combos[n][0]
|
||||
next_line = bar_combos[n][1]
|
||||
jn = 8
|
||||
for j in range(8):
|
||||
(x0, y0), (x1, y1) = lerp_poly(first_line, next_line, j / (jn - 1.))
|
||||
var_bar(x0 * siz, y0 * siz, x1 * siz, y1 * siz,
|
||||
radius_a, radius_b)
|
||||
|
||||
def keyPressed():
|
||||
global W, H
|
||||
if key == "s":
|
||||
saveFrame("####.png")
|
||||
|
||||
def lerp_poly(p0, p1, t):
|
||||
pts = []
|
||||
for sp0, sp1 in zip(p0, p1):
|
||||
pts.append((lerp(sp0[0], sp1[0], t),
|
||||
lerp(sp0[1], sp1[1], t)))
|
||||
return pts
|
||||
|
||||
def settings():
|
||||
from os import path
|
||||
global SKETCH_NAME
|
||||
SKETCH_NAME = path.basename(sketchPath())
|
||||
OUTPUT = ".png"
|
||||
println(
|
||||
"""
|
||||
|
||||
|
||||
[{0}](https://github.com/villares/sketch-a-day/tree/master/{2}/{0}) [[Py.Processing](https://villares.github.io/como-instalar-o-processing-modo-python/index-EN)]
|
||||
""".format(SKETCH_NAME, OUTPUT, year())
|
||||
)
|
||||
|
|
@ -0,0 +1,100 @@
|
|||
def var_bar(p1x, p1y, p2x, p2y, r1, r2=None):
|
||||
"""
|
||||
Tangent/tangent shape on 2 circles of arbitrary radius
|
||||
"""
|
||||
if r2 is None:
|
||||
r2 = r1
|
||||
#line(p1x, p1y, p2x, p2y)
|
||||
d = dist(p1x, p1y, p2x, p2y)
|
||||
ri = r1 - r2
|
||||
if d > abs(ri):
|
||||
rid = (r1 - r2) / d
|
||||
if rid > 1:
|
||||
rid = 1
|
||||
if rid < -1:
|
||||
rid = -1
|
||||
beta = asin(rid) + HALF_PI
|
||||
with pushMatrix():
|
||||
translate(p1x, p1y)
|
||||
angle = atan2(p1x - p2x, p2y - p1y)
|
||||
rotate(angle + HALF_PI)
|
||||
x1 = cos(beta) * r1
|
||||
y1 = sin(beta) * r1
|
||||
x2 = cos(beta) * r2
|
||||
y2 = sin(beta) * r2
|
||||
#print((d, beta, ri, x1, y1, x2, y2))
|
||||
beginShape()
|
||||
b_arc(0, 0, r1 * 2, r1 * 2,
|
||||
-beta - PI, beta - PI, mode=2)
|
||||
b_arc(d, 0, r2 * 2, r2 * 2,
|
||||
beta - PI, PI - beta, mode=2)
|
||||
endShape(CLOSE)
|
||||
|
||||
else:
|
||||
ellipse(p1x, p1y, r1 * 2, r1 * 2)
|
||||
ellipse(p2x, p2y, r2 * 2, r2 * 2)
|
||||
|
||||
def b_arc(cx, cy, w, h, start_angle, end_angle, mode=0):
|
||||
"""
|
||||
A bezier approximation of an arc
|
||||
using the same signature as the original Processing arc()
|
||||
mode: 0 "normal" arc, using beginShape() and endShape()
|
||||
1 "middle" used in recursive call of smaller arcs
|
||||
2 "naked" like normal, but without beginShape() and endShape()
|
||||
for use inside a larger PShape
|
||||
"""
|
||||
theta = end_angle - start_angle
|
||||
# Compute raw Bezier coordinates.
|
||||
if mode != 1 or theta < HALF_PI:
|
||||
x0 = cos(theta / 2.0)
|
||||
y0 = sin(theta / 2.0)
|
||||
x3 = x0
|
||||
y3 = 0 - y0
|
||||
x1 = (4.0 - x0) / 3.0
|
||||
if y0 != 0:
|
||||
y1 = ((1.0 - x0) * (3.0 - x0)) / (3.0 * y0) # y0 != 0...
|
||||
else:
|
||||
y1 = 0
|
||||
x2 = x1
|
||||
y2 = 0 - y1
|
||||
# Compute rotationally-offset Bezier coordinates, using:
|
||||
# x' = cos(angle) * x - sin(angle) * y
|
||||
# y' = sin(angle) * x + cos(angle) * y
|
||||
bezAng = start_angle + theta / 2.0
|
||||
cBezAng = cos(bezAng)
|
||||
sBezAng = sin(bezAng)
|
||||
rx0 = cBezAng * x0 - sBezAng * y0
|
||||
ry0 = sBezAng * x0 + cBezAng * y0
|
||||
rx1 = cBezAng * x1 - sBezAng * y1
|
||||
ry1 = sBezAng * x1 + cBezAng * y1
|
||||
rx2 = cBezAng * x2 - sBezAng * y2
|
||||
ry2 = sBezAng * x2 + cBezAng * y2
|
||||
rx3 = cBezAng * x3 - sBezAng * y3
|
||||
ry3 = sBezAng * x3 + cBezAng * y3
|
||||
# Compute scaled and translated Bezier coordinates.
|
||||
rx, ry = w / 2.0, h / 2.0
|
||||
px0 = cx + rx * rx0
|
||||
py0 = cy + ry * ry0
|
||||
px1 = cx + rx * rx1
|
||||
py1 = cy + ry * ry1
|
||||
px2 = cx + rx * rx2
|
||||
py2 = cy + ry * ry2
|
||||
px3 = cx + rx * rx3
|
||||
py3 = cy + ry * ry3
|
||||
# Debug points... comment this out!
|
||||
# stroke(0)
|
||||
# ellipse(px3, py3, 15, 15)
|
||||
# ellipse(px0, py0, 5, 5)
|
||||
# Drawing
|
||||
if mode == 0: # 'normal' arc (not 'middle' nor 'naked')
|
||||
beginShape()
|
||||
if mode != 1: # if not 'middle'
|
||||
vertex(px3, py3)
|
||||
if theta < HALF_PI:
|
||||
bezierVertex(px2, py2, px1, py1, px0, py0)
|
||||
else:
|
||||
# to avoid distortion, break into 2 smaller arcs
|
||||
b_arc(cx, cy, w, h, start_angle, end_angle - theta / 2.0, mode=1)
|
||||
b_arc(cx, cy, w, h, start_angle + theta / 2.0, end_angle, mode=1)
|
||||
if mode == 0: # end of a 'normal' arc
|
||||
endShape()
|
||||
20
README.md
20
README.md
|
|
@ -17,12 +17,32 @@ You may also support my artistic work, open teaching resources and research with
|
|||
---
|
||||
|
||||
## 2019
|
||||
|
||||
---
|
||||
|
||||
|
||||
|
||||
|
||||
[sketch_190708a](https://github.com/villares/sketch-a-day/tree/master/2019/sketch_190708a) [[Py.Processing](https://villares.github.io/como-instalar-o-processing-modo-python/index-EN)]
|
||||
|
||||
- Number of possible bars on a 2x2 grid: 12
|
||||
- Number of 2-bar combinations: 66
|
||||
- Cols: 11 Rows: 6
|
||||
- Interpolating 6 intermediary bars (total of 8 bars drawn)
|
||||
- Overlapping slightly the combinations
|
||||
|
||||
---
|
||||
|
||||
|
||||
|
||||
[sketch_190707a](https://github.com/villares/sketch-a-day/tree/master/2019/sketch_190707a) [[Py.Processing](https://villares.github.io/como-instalar-o-processing-modo-python/index-EN)]
|
||||
|
||||
More explorations of inerpolated combinations in grids
|
||||
- Number of possible bars on a 2x2 grid: 12
|
||||
- Number of 3-bar combinations: 220
|
||||
- Cols: 20 Rows: 11
|
||||
- Interpolating 2 intermediares each bar pair
|
||||
|
||||
---
|
||||
|
||||
<iframe src="https://abav.lugaralgum.com/sketch-a-day/2019/sketch_190706a/web06/index.html" style="width: 500px; height: 500px; border: 0px"></iframe>
|
||||
|
|
|
|||
Ładowanie…
Reference in New Issue