diff --git a/2019/sketch_190316a/arcs.py b/2019/sketch_190316a/arcs.py new file mode 100644 index 00000000..3a9c1c5b --- /dev/null +++ b/2019/sketch_190316a/arcs.py @@ -0,0 +1,148 @@ +# -*- 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) diff --git a/2019/sketch_190316a/gif_exporter.py b/2019/sketch_190316a/gif_exporter.py new file mode 100644 index 00000000..439c4118 --- /dev/null +++ b/2019/sketch_190316a/gif_exporter.py @@ -0,0 +1,40 @@ +""" +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() diff --git a/2019/sketch_190316a/sketch_190316a.gif b/2019/sketch_190316a/sketch_190316a.gif new file mode 100644 index 00000000..92e8bdc0 Binary files /dev/null and b/2019/sketch_190316a/sketch_190316a.gif differ diff --git a/2019/sketch_190316a/sketch_190316a.pyde b/2019/sketch_190316a/sketch_190316a.pyde new file mode 100644 index 00000000..6816bd4b --- /dev/null +++ b/2019/sketch_190316a/sketch_190316a.pyde @@ -0,0 +1,150 @@ +# Alexandre B A Villares - https://abav.lugaralgum.com/sketch-a-day +SKETCH_NAME, OUTPUT = "sketch_190316a", ".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, 350) + 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, -600) + background(200) + fc = frameCount % 100 - 50 + + + 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 not mousePressed: + 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): + stroke(255 - i * 255) + 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) + ) diff --git a/README.md b/README.md index 0d9cc73f..8d4aff94 100644 --- a/README.md +++ b/README.md @@ -25,6 +25,12 @@ Get updates from my sort-of-weekly newsletter: [[sketch-mail](https://villares.o --- +![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)] + +--- + ![sketch_190315a](2019/sketch_190315a/sketch_190315a.gif) [sketch_190315a](https://github.com/villares/sketch-a-day/tree/master/2019/sketch_190315a) [[Py.Processing](https://villares.github.io/como-instalar-o-processing-modo-python/index-EN)]