Incomplete improvement (Anchor object)

pulsar/main.py

@@ -9,19 +9,21 @@ def horizontal_indicator():
     vgl.elements.Line(ends=[(0.4, 0.5), (0.6, 0.5)], color="green").attach(frame_object=frame)
     pass
 
-@window.observerize
-def observer(info):
-    if info["delta"] == "key":
-        print(info)
-    pass
-
 def marking_lines():
     global window
     frame = vgl.Frame().attach(window_object=window, poscale=(0,0), clone_name="Marking Line")
+    lines = list()
     for i in range(0, 24):
-        vgl.elements.Line(ends=[(0, i/24), (1, i/24)], color="green").attach(frame_object=frame)
+        lines.append(vgl.elements.Line(ends=[(0, i/24), (1, i/24)], color="green").attach(frame_object=frame))
     for i in range(0, 32):
-        vgl.elements.Line(ends=[(i/32, 0), (i/32, 1)], color="green").attach(frame_object=frame)
+        lines.append(vgl.elements.Line(ends=[(i/32, 0), (i/32, 1)], color="green").attach(frame_object=frame))
+    @window.observerize
+    def observer(info):
+        if info["delta"] == "key":
+            print(info)
+        for i in lines:
+            i.set_color('#' + str((info['cursor']['position'][0] + info['cursor']['position'][1]*100 + info['cursor']['position'][0]*10000) % 999999).zfill(6))
+    observer()
 
 def console():
     print("You've entered Pulsar's command console, an embbedded Python interpreter for debugging & testing")
@@ -32,14 +34,13 @@ def console():
                 return
             exec(i)
         except:
-            print("An error caused & captured")
+            print("An error occured & captured")
 
 if __name__ == '__main__':
     print("Welcome to AiraPulsar Client")
     window.start()
     horizontal_indicator()
     marking_lines()
-    observer()
     console()
     input("任意键以退出")
     window.kill()

vgl/__init__.py

@@ -3,5 +3,5 @@ os.environ["PYGAME_HIDE_SUPPORT_PROMPT"] = "True"
 from .main import *
 from . import basic_elements as elements
 
-version = '0.2.0'
+version = '0.3.0'
 print(f"Powered by Vector Graphic Layer, version {version}")

vgl/basic_elements.py

@@ -1,10 +1,13 @@
 from vgl.main import *
 import pygame
 import time
+
 class Line(Element):
     def __init__(self, ends = [(0.1, 0.1), (0.2, 0.2)], color = "#ffffff"):
         self.color = color
         self.ends = ends
+    def set_color(self, new_color):
+        self.color = new_color
     def move(self, delta, duration):
         self.add_task(group = "move", start_time = Aux.gettime(), duration = duration, delta = delta)
     def update(self):

vgl/main.py

@@ -87,6 +87,72 @@ class Aux():
             #print("不重要事件")
             return 0
         return 1
+class Anchor(object):
+    """
+    "锚定点" 对象
+    """
+    poscale = (0, 0)
+    fixed = 3
+    def __init__(self, *args):
+        if isinstance(args[0], tuple) or isinstance(args[0], Anchor):
+            if isinstance(args[0], Anchor):
+                self.poscale = args[0].poscale
+            else:
+                self.poscale = args[0]
+        else:
+            self.poscale = (args[0], args[1])
+    def x(self):
+        return self.poscale[0]
+    def y(self):
+        return self.poscale[1]
+    def __add__(self, other):
+        if isinstance(other, tuple):
+            return Anchor((self.poscale[0] + other[0], self.poscale[1] + other[1]))
+        elif isinstance(other, Anchor):
+            return Anchor((self.poscale[0] + other.poscale[0], self.poscale[1] + other.poscale[1]))
+        else:
+            raise TypeError("不支持的加法操作数类型")
+    def __mul__(self, other):
+        "向屏幕中心倍增/倍缩"
+        if isinstance(other, tuple):
+            return Anchor((0.5 + other[0] * (self.poscale[0] - 0.5), 0.5 + other[1] * (self.poscale[1] - 0.5)))
+        elif isinstance(other, (int, float)):
+            return Anchor((0.5 + other * (self.poscale[0] - 0.5), 0.5 + other * (self.poscale[1] - 0.5)))
+        else:
+            raise TypeError("不支持的乘法操作数类型")
+    def __imul__(self, other):
+        result = self.__mul__(other)
+        self.poscale = result.poscale
+        return self
+    def __truediv__(self, other):
+        "乘以倒数"
+        if isinstance(other, (int, float)):
+            if other == 0:
+                return Anchor((0.5, 0.5))
+            else:
+                return self.__mul__(1 / other)
+        elif isinstance(other, Anchor) or isinstance(other, tuple):
+            divisor_x = other[0] if isinstance(other, tuple) else other.x()
+            divisor_y = other[1] if isinstance(other, tuple) else other.y()
+            # TODO: 错误代码, 应当予以修正
+            if divisor_x == 0 and divisor_y == 0:
+                return Anchor((0.5, 0.5))
+            if divisor_x == 0 and divisor_y == 0:
+                return Anchor((0.5, 0.5))
+            else:
+                return self.__mul__((1 / divisor_x, 1 / divisor_y))
+        else:
+            raise TypeError("不支持的除法操作数类型")
+    def __itruediv__(self, other):
+        "就地除法"
+        result = self.__truediv__(other)
+        self.poscale = result.poscale
+        return self
+    def __str__(self):
+        if self.fixed is not None:
+            return f"({round(self.poscale[0], self.fixed)}, {round(self.poscale[1], self.fixed)})"
+        else:
+            return f"({self.poscale[0]}, {self.poscale[1]})"
 class Element(object):
     is_hide = False
     is_template = True