def make_triangles(self):
polyline = []
triangles = []
for p in self.points_list:
polyline.append(p.get_coord())
this_polygon = None
for i in range(5):
try:
this_polygon = poly2tri.Triangulator(polyline)
break
except:
pass
if not this_polygon:
return None
for triangle in this_polygon.polygons:
point_a = Point()
point_a.set_coord(triangle[0].x, triangle[0].y)
point_b = Point()
point_b.set_coord(triangle[1].x, triangle[1].y)
point_c = Point()
point_c.set_coord(triangle[2].x, triangle[2].y)
this_triangle = Triangle()
this_triangle.set_point_by_points(point_a,
point_b,
point_c)
triangles.append(this_triangle)
return triangles
def set_point_by_coord(self, point_a_x, point_a_y, point_b_x,
point_b_y, point_c_x, point_c_y):
point_a = Point()
point_a.set_coord(point_a_x, point_a_y)
point_b = Point()
point_b.set_coord(point_b_x, point_b_y)
point_c = Point()
point_c.set_coord(point_c_x,point_c_y)
self.set_point_by_points(point_a, point_b, point_c)
def set_line_by_coord(self, point_a_x, point_a_y, point_b_x, point_b_y):
point_a = Point()
point_a.set_coord(point_a_x, point_a_y)
point_b = Point()
point_b.set_coord(point_b_x, point_b_y)
self.set_line_by_point(point_a, point_b)
def close_polygon(self):
if not self.polygon_is_closed():
point_p = Point()
point_p.set_coord(self.points_list[0].get_x(),
self.points_list[0].get_y())
self.points_list.append(point_p)
def add_point_by_coord(self, x, y):
point_p = Point()
point_p.set_coord(x, y)
self.add_point(point_p)
return None
for triangle in this_polygon.polygons:
point_a = Point()
point_a.set_coord(triangle[0].x, triangle[0].y)
point_b = Point()
point_b.set_coord(triangle[1].x, triangle[1].y)
point_c = Point()
point_c.set_coord(triangle[2].x, triangle[2].y)
this_triangle = Triangle()
this_triangle.set_point_by_points(point_a,
point_b,
point_c)
triangles.append(this_triangle)
return triangles
p1 = Point()
p1.set_coord(0, 0)
p2 = Point()
p2.set_coord(1, 0)
p3 = Point()
p3.set_coord(1, 1)
p4 = Point()
p4.set_coord(0, 1)
p5 = Point()
p5.set_coord(0, 0)
points = [p1, p2, p3, p4]
poly = Polygon()
poly.add_points_by_point_list(points)
poly.close_polygon()
t = poly.make_triangles()
for b in t:
for p in b.get_points():
