forgot to edit examples in #144

examples/moving_a_sprite_along_with_a_bezier_curve.py

@@ -103,11 +103,13 @@ async def play_animation(self, *, draw_target, speed=1.0):
                     texture=texture,
                 )
                 PopMatrix()
-            async for t in ak.anim_with_ratio(duration=1.5 / speed):
+            async for t in ak.anim_with_ratio(base=1.5 / speed):
                 x, y = calc_position(factors, t)
                 translate.x = x
                 translate.y = y
                 rotate.angle = calc_angle(velocity_factors, t)
+                if t >= 1.0:
+                    break
             await ak.sleep(1)
         finally:
             draw_target.canvas.remove(root_group)

examples/moving_a_sprite_along_with_a_bezier_curve_simplified.py

@@ -57,11 +57,13 @@ async def play_animation(self, *, draw_target, speed=1.0):
                 )
                 PopMatrix()
             await ak.sleep(1.0 / speed)
-            async for t in ak.anim_with_ratio(duration=2.0 / speed):
+            async for t in ak.anim_with_ratio(base=2.0 / speed):
                 x, y = calc_position(factors, t)
                 translate.x = x
                 translate.y = y
                 rotate.angle = calc_angle(velocity_factors, t)
+                if t >= 1.0:
+                    break
             await ak.sleep(1)
         finally:
             draw_target.canvas.remove(root_group)

examples/moving_a_sprite_along_with_a_catmull_rom_spline.py

@@ -81,15 +81,19 @@ async def play_animation(self, *, draw_target, speed=1.0, n_spline_segments):
                 color_inst3 = Color(1.0, 1.0, 1.0, 1.0)
                 point_inst = Point(pointsize=1.0)
             flattened = array.array('f')
-            async for p in ak.anim_with_ratio(duration=n_segments * 2.0 / speed):
-                if p >= 1.0:
+            quit = False
+            async for p in ak.anim_with_ratio(base=2.0 / speed):
+                if p >= n_segments:
+                    quit = True
                     f = interpolating_functions[-1]
                     t = 1.0
                 else:
-                    idx, t = divmod(p * n_segments, 1.0)
+                    idx, t = divmod(p, 1.0)
                     f = interpolating_functions[int(idx)]
                 flattened.extend(f[0](t))
                 point_inst.points = flattened
+                if quit:
+                    break
 
             # Fade-out the group1, and make the above points darker
             await slp()
@@ -114,17 +118,21 @@ async def play_animation(self, *, draw_target, speed=1.0, n_spline_segments):
                     texture=texture,
                 )
                 PopMatrix()
-            async for p in ak.anim_with_ratio(duration=n_segments * 2.0 / speed):
-                if p >= 1.0:
+            quit = False
+            async for p in ak.anim_with_ratio(base=2.0 / speed):
+                if p >= n_segments:
+                    quit = True
                     f = interpolating_functions[-1]
                     t = 1.0
                 else:
-                    idx, t = divmod(p * n_segments, 1.0)
+                    idx, t = divmod(p, 1.0)
                     f = interpolating_functions[int(idx)]
                 x, y = f[0](t)
                 translate.x = x
                 translate.y = y
                 rotate.angle = f[1](t)
+                if quit:
+                    break
             await ak.sleep(1)
         finally:
             draw_target.canvas.remove(root_group)

examples/moving_a_sprite_along_with_a_catmull_rom_spline_simplified.py

@@ -65,17 +65,21 @@ async def play_animation(self, *, draw_target, speed=1.0, n_spline_segments):
                 )
                 PopMatrix()
             await ak.sleep(1.0 / speed)
-            async for p in ak.anim_with_ratio(duration=n_spline_segments * 2.0 / speed):
-                if p >= 1.0:
+            quit = False
+            async for p in ak.anim_with_ratio(base=2.0 / speed):
+                if p >= n_spline_segments:
+                    quit = True
                     f = interpolating_functions[-1]
                     t = 1.0
                 else:
-                    idx, t = divmod(p * n_spline_segments, 1.0)
+                    idx, t = divmod(p, 1.0)
                     f = interpolating_functions[int(idx)]
                 x, y = f[0](t)
                 translate.x = x
                 translate.y = y
                 rotate.angle = f[1](t)
+                if quit:
+                    break
             await ak.sleep(1)
         finally:
             draw_target.canvas.remove(root_group)

examples/popping_widget.py

@@ -31,10 +31,12 @@ async def pop_widget(widget, *, height=300., duration=1., rotation_speed: degree
         rotate = Rotate(origin=widget.center)
         ig.add(translate)
         ig.add(rotate)
-        async for dt, et, p in anim_with_dt_et_ratio(duration=duration):
-            p = p * 2. - 1.  # convert range[0 to +1] into range[-1 to +1]
+        async for dt, et, p in anim_with_dt_et_ratio(base=duration / 2.):
+            p -= 1.
             translate.y = (-(p * p) + 1.) * height
             rotate.angle = et * rotation_speed
+            if p >= 1.:
+                break
 
 
 KV_CODE = r'''