first_try

2019/sketch_190418a/sketch_190418a.pyde

@@ -0,0 +1,127 @@
+"""
+A minimal poly editor
+"""
+click = False
+cell_size = 25
+pts = [(12.0, 10.0), (12.0, 0.0), (-2.0, -2.0),
+       (0.0, 12.0), (10.0, 12.0), (10.0,  10.0)]
+holes = [(2.0, 2.0), (6.0, 2.0), (6.0, 6.0), (2.0, 7.0)]
+md = -1
+
+
+def setup():
+    global cell_size, cell_half, order, grid_size
+    size(500, 500, P2D)
+    order = width / cell_size
+    grid_size = order * cell_size
+    cell_half = cell_size / 2
+    rectMode(CENTER)
+    strokeJoin(ROUND)
+
+def draw():
+    background(230)
+    stroke(128)
+    for x in range(order):
+        line(x * cell_size, 0,
+             x * cell_size, cell_size * order)
+    for y in range(order):
+        line(0, y * cell_size,
+             cell_size * order , y * cell_size)
+    # grade de cellulas
+    for i in range(order):
+        x = cell_half + i * cell_size
+        for j in range(order):
+            y = cell_half + j * cell_size
+            cell(x, y)
+    poly_draw()
+    fill(0)
+    text(str(pts), 0, grid_size)
+
+def cell(mx, my):
+    global click
+    noStroke()
+    if dist(mouseX, mouseY, mx, my) < cell_half:
+        fill(209, 100)
+        if click:
+            x = mx / cell_size * 2
+            y = my / cell_size * 2 
+            if (x, y) in pts:
+                pts.remove((x, y))
+            else:
+                pts.append((x, y))
+            click = False
+    else:
+        noFill()
+    ellipse(mx, my, cell_size, cell_size)
+
+def poly_draw():
+    #  polígono
+    pushStyle()
+    strokeWeight(3)  # espessura do polígono
+    noFill()
+    if len(pts) >= 3:
+        fill(255)
+        beginShape()
+        for x, y in pts[::-1]:
+            stroke(0)
+            sx = x * cell_half
+            sy = y * cell_half
+            vertex(sx, sy)            
+        beginContour()
+        for x, y in holes[::-1]:
+            sx = x * cell_half
+            sy = y * cell_half
+            vertex(sx, sy)  
+        endContour()  
+        endShape(CLOSE)
+
+    elif len(pts) == 2:
+        stroke(128)
+        beginShape(LINES)
+        for x, y in pts:
+            sx = x * cell_half
+            sy = y * cell_half
+            vertex(sx, sy)
+        endShape()
+    popStyle()
+
+def keyPressed():
+    global pts
+    if key == " ":
+        pts = []  # empty pts
+    if key == "p":
+        println(pts)
+        
+def mousePressed():
+    global md
+    for i, p in enumerate(pts):
+        x = p[0] * cell_half
+        y = p[1] * cell_half
+        if dist(mouseX, mouseY, x, y) < 10:
+            md = i
+            break
+    global click
+    if mouseButton == RIGHT:
+        click = True
+        
+def mouseDragged():
+    if md >= 0:
+        pts[md] = (int(mouseX / cell_size * 2), 
+                   int(mouseY / cell_size * 2))
+
+def mouseReleased():
+    global md
+    md = -1        
+        
+def settings():
+    from os import path
+    global SKETCH_NAME
+    SKETCH_NAME = path.basename(sketchPath())
+    OUTPUT = ".gif"
+    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)
+    )