def __rayIntersect(p0, p1, polyline):
ray_dir = GeometryTools.lineToRay(p0, p1)
intersections = GeometryTools.rayPolygonIntersections(p1, ray_dir, polyline)
if intersections:
if len(intersections) > 1:
d_list = [ GeometryTools.distance(p1, p[1]) for p in intersections ]
index = d_list.index(min(d_list))
else:
index = 0
p2 = intersections[index][1]
return [p1, p2]
else:
return None
def extendToBBox(self, bbox, k, start=True):
fault_polyline = self.getPolyline(k)
if start:
p0 = fault_polyline[1]
p1 = fault_polyline[0]
else:
p0 = fault_polyline[-2]
p1 = fault_polyline[-1]
ray_dir = GeometryTools.lineToRay(p0,p1)
intersections = GeometryTools.rayPolygonIntersections(p1, ray_dir, bbox)
if intersections:
p2 = intersections[0][1]
if self.getName():
name = "Extend:%s" % self.getName()
else:
name = None
return CPolyline(name=name, init_points=[(p1[0], p1[1]), p2])
else:
raise Exception("Logical error - must intersect with bounding box")