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s354/cell.py

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+
+class Cell():
+    # neighbours list
+    NL = ((-1, -1), (+0, -1), (+1, -1),
+          (-1, +0), (+0, +0), (+1, +0),
+          (-1, +1), (+0, +1), (+1, +1))
+    ONL = ((+0, -1),
+           (-1, +0), (+0, +0), (+1, +0),
+           (+0, +1))
+    DNL = ((-1, -1), (+1, -1),
+           (+0, +0),
+           (-1, +1), (+1, +1))
+
+    def __init__(self, index, cell_size, state=False):
+        self.index = index
+        self.state = state
+        self.size_ = cell_size
+        self.mouse_down = False
+        i, j = index[0], index[1]
+        self.pos = PVector(self.size_ / 2 + i * self.size_,
+                           self.size_ / 2 + j * self.size_)
+
+    def update(self):
+        # mouse over & selection treatment
+        hs = self.size_ / 2
+        px, py = self.pos.x, self.pos.y
+        self.mouse_on = (px - hs < mouseX < px + hs and
+                         py - hs < mouseY < py + hs)
+        if self.mouse_on and mousePressed:
+            self.mouse_down = True
+        if self.mouse_down and not mousePressed:
+            self.state = not self.state
+            self.mouse_down = False
+        if self.mouse_on:
+            fill(128, 128)
+        else:
+            noFill()
+        strokeWeight(1)
+        stroke(200)
+        #rect(self.pos.x, self.pos.y, self.size_, self.size_)
+
+    def plot(self, mode):
+        if self.state:
+            strokeWeight(1)
+            if mode == -1:
+                fill(0)
+                noStroke()
+                rect(self.pos.x, self.pos.y, self.size_, self.size_)
+            if mode == 0:
+                stroke(0)
+                self.draw_lines(Cell.ONL)
+                self.draw_lines(Cell.DNL, -4)
+                # self.draw_lines(Cell.DNL)
+            elif mode == 1:
+                stroke(0, 150, 0)
+                self.draw_lines(Cell.ONL)
+            elif mode == 2:
+                stroke(0, 0, 150)
+                self.draw_lines(Cell.DNL)
+            elif mode == 3:
+                stroke(0, 150, 0)
+                self.draw_lines(Cell.ONL, -4)
+                stroke(0, 0, 150)
+                self.draw_lines(Cell.DNL)
+            elif mode == 4:
+                stroke(0, 150, 0)
+                self.draw_lines(Cell.DNL)
+                stroke(0, 0, 150)
+                self.draw_lines(Cell.ONL, -4)
+
+    def draw_lines(self, nbs, res=0):
+        third = self.size_ / 3.
+        i, j = self.index[0], self.index[1]
+        for (ni, nj) in nbs:
+            nb = Cell.grid.get((i + ni, j + nj), None)
+            if nb and nb.state:
+                rect(self.pos.x + ni * third * 1.5,
+                     self.pos.y + nj * third * 1.5,
+                     third + res, third + res)
+                # point(self.pos.x, self.pos.y) #, third, third)
+                #rect(self.pos.x, self.pos.y, third, third)
+                arrow(self.pos.x, self.pos.y,
+                      self.pos.x + ni * third * 1.5,
+                      self.pos.y + nj * third * 1.5,
+                      third / 2, third / 2,
+                      tail_func=ellipse)
+def arrow(x1, y1, x2, y2, shorter=0, head=None,
+          tail_func=None, tail_size=None):
+    """
+
+    """
+    L = dist(x1, y1, x2, y2)
+    if not head:
+        head = max(L / 20, 2)
+    if L > head:
+      with pushMatrix():
+        translate(x1, y1)
+        angle = atan2(x1 - x2, y2 - y1)
+        rotate(angle)
+        offset = shorter / 2
+        strokeCap(ROUND)
+        line(0, L - offset, -head / 3, L - offset - head)
+        line(0, L - offset, head / 3, L - offset - head)
+        strokeCap(SQUARE)
+        line(0, offset, 0, L - offset)
+
+        if tail_func:
+            if not tail_size:
+                tail_size = head
+            tail_func(0, 0, tail_size, tail_size)

s354/s354.pyde

@@ -0,0 +1,97 @@
+# Alexandre B A Villares - https://abav.lugaralgum.com/sketch-a-day
+SKETCH_NAME = "s354"  # 20181218
+OUTPUT = ".png"
+mode = 0
+
+from cell import Cell
+from random import choice
+from java.awt import Toolkit
+
+CELL_SIZE = 50
+Cell.grid = dict()
+
+xo, yo = 100, 100
+xio, yio = 0, 0
+s = 10
+
+def setup():
+    size(600, 600)
+    global img, grid_size
+    img = loadImage("a.png")
+    grid_size = width / CELL_SIZE
+
+def init_grid(f=None):
+    w, h = width // CELL_SIZE, height // CELL_SIZE
+    for i in range(w):
+        for j in range(h): 
+            if f == None:
+                f = lambda i, j: choice((True, False))
+            Cell.grid[(i, j)] = Cell((i, j), CELL_SIZE, f(i, j) )
+
+def p_ou_b(i, j):
+     c = img.get(xo + i, yo + j)
+     if c == color(0): return True
+     else: return False
+     
+
+def draw():
+    #scale(3)
+    background(220)
+    # KeyEvent.VK_CAPS_LOCK is 20
+    capsLocked = Toolkit.getDefaultToolkit().getLockingKeyState(20)
+    if capsLocked:
+        rectMode(CORNER)
+        image(img, xio, yio)
+        noFill()
+        rect(xio + xo, yio + yo, grid_size, grid_size)
+        init_grid(p_ou_b)
+    else:
+        rectMode(CENTER)
+        for c in Cell.grid.values():
+            c.update()
+        for c in Cell.grid.values():
+            c.plot(mode)
+
+def keyPressed():
+    global mode
+    global xo, yo, xio, yio
+    if key == CODED:
+        
+        if keyCode == RIGHT and xo < img.width - 11:
+            xo += 16
+        if keyCode == LEFT and xo > 10:
+            xo -= 16
+        if keyCode == DOWN and yo < img.height - 11:
+            yo += 16
+        if keyCode == UP and yo > 10:
+            yo -= 16
+    else:
+        if key == "s" or key == "S":
+            saveFrame(SKETCH_NAME + "_###.png")
+        if key in "01234567789":
+            mode = int(key)
+        if key == "-":
+            mode = -1
+        if key == " ":
+            init_grid(lambda i, j: False)
+        if key == "x":
+            init_grid(lambda i, j: (i + j) % 2 == 0)
+        if key == "r":
+            init_grid()
+    if xo > width - grid_size:
+        xio = width - grid_size - xo
+    if yo > height - grid_size:
+        yio = height - grid_size - yo
+
+
+
+
+# print text to add to the project's README.md
+def settings():
+    println(
+        """
+![{0}]({0}/{0}{2})
+
+{1}: [code](https://github.com/villares/sketch-a-day/tree/master/{0}) [[Py.Processing](https://villares.github.io/como-instalar-o-processing-modo-python/index-EN)]
+""".format(SKETCH_NAME, SKETCH_NAME[1:], OUTPUT)
+    )