22a

2020/sketch_2020_09_22a/ponto.py

@@ -0,0 +1,19 @@
+
+
+class Ponto():
+    
+    SIZE = 5
+    
+    def __init__(self, x, y):
+        self.ox = x
+        self.oy = y
+        self.x = x
+        self.y = y
+        self.f = 255
+        
+    def __getitem__(self, i):
+        return (self.x, self.y)[i]
+        
+    def draw(self):
+        fill(self.f)
+        circle(self.x, self.y, Ponto.SIZE)

2020/sketch_2020_09_22a/sketch_2020_09_22a.pyde

@@ -0,0 +1,87 @@
+from random import sample
+from itertools import product
+
+from villares.line_geometry import * # github.com/villares/villares
+
+from ponto import Ponto
+
+BORDER = 100
+SIZE = 50
+
+pontos = []
+dragg = []
+
+def setup():
+    global grid
+    size(400, 400)
+    grid = list(product(range(BORDER, height - BORDER + 1, SIZE),
+                        range(BORDER, height - BORDER + 1, SIZE)))
+
+    make_points()
+
+
+
+def draw():
+    background(200)
+    
+    if len(dragg) == 2:   
+        d_line = Line(*dragg)
+        strokeWeight(0.5)
+        d_line.draw() 
+        lines = inter_lines(d_line, pontos)
+        for inter_line in lines:
+            strokeWeight(2)
+            inter_line.draw()
+
+
+    noFill()
+    strokeWeight(1)
+    beginShape()
+    for p in pontos:
+        vertex(p.x, p.y)
+    endShape(CLOSE)
+
+                        
+    for p in pontos:
+        if len(dragg) == 2:
+            if area(p, dragg[0], dragg[1]) > 0:
+                p.f = color(255, 0, 0)
+            else:
+                p.f = color(0, 0, 255)
+        else:
+            p.f = 255
+        p.draw()
+  
+        
+def keyPressed(): 
+    if key == ' ': make_points()  
+    if key == 'm': move_points()  
+                        
+def mousePressed():
+    dragg[:] = [(mouseX, mouseY)]
+    
+def mouseDragged():
+    if len(dragg) == 1:
+        dragg.append((mouseX, mouseY))
+    else:
+        dragg[1] = (mouseX, mouseY)
+
+def area(p0, p1, p2):
+    a = (p1[0] * (p2[1] - p0[1]) +
+         p2[0] * (p0[1] - p1[1]) +
+         p0[0] * (p1[1] - p2[1]))
+    return a
+
+# def mouseReleased():
+#     dragg[:] = []
+
+
+def make_points():
+    pontos[:] = []
+    for x, y in sample(grid, 6):
+        pontos.append(Ponto(x, y))
+        
+def make_points():
+    pontos[:] = []
+    for x, y in sample(grid, 6):
+        pontos.append(Ponto(x, y))

README.md

@@ -26,6 +26,12 @@ Some of the tools I have used:
 
 ---
 
+![sketch_2020_09_22a](2020/sketch_2020_09_22a/sketch_2020_09_22a.gif)
+
+[sketch_2020_09_22a](https://github.com/villares/sketch-a-day/tree/master/2020/sketch_2020_09_22a) [[Py.Processing](https://villares.github.io/como-instalar-o-processing-modo-python/index-EN)]
+
+---
+
 ![sketch_2020_09_21a](2020/sketch_2020_09_21a/sketch_2020_09_21a.gif)
 
 [sketch_2020_09_21a](https://github.com/villares/sketch-a-day/tree/master/2020/sketch_2020_09_21a) [[Py.Processing](https://villares.github.io/como-instalar-o-processing-modo-python/index-EN)]