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graph.py
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graph.py
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from manimlib.imports import *
from manim_tuan import *
# dfsTraverse
# dfsList
# dfsMatrix
# bfsTraverse_List
# bfsTraverse_Matrix
# primList
# primMatrix
# kruskalList
# kruskalMatrix
dfsTraverse_codes = [
"",
]
dfsList_codes = [
"",
]
dfsMatrix_codes = [
"",
]
bfsTraverse_List_codes = [
"",
]
bfsTraverse_Matrix_codes = [
"",
]
primList_codes = [
"",
]
primMatrix_codes = [
"void prim(EdgeType noEdge)",
"{",
" struct Dist",
" {",
" int adjVex;",
" EdgeType lowCost;",
" } *D = new Dist[this->verNum];",
" EdgeType minCost;",
" int u, i, j, count = 0;",
" for (i = 0; i < this->verNum; ++i)",
" {",
" this->visited[i] = false;",
" D[i].lowCost = noEdge;",
" }",
" u = 0;",
" this->visited[u] = true;",
" for (i = 1; i < this->verNum; ++i)",
" {",
" for (j = 0; j < this->verNum; ++j)",
" if (!this->visited[j]&&edges[u][j] != noEdge)",
" {",
" if (edges[u][j] < D[j].lowCost)",
" {",
" D[j].lowCost = edges[u][j];",
" D[j].adjVex = u;",
" }",
" }",
" minCost = noEdge;",
" for (j = 0; j < this->verNum; ++j)",
" if (D[j].lowCost < minCost)",
" {",
" minCost = D[j].lowCost;",
" u = j;",
" }",
" this->TE[count].vex1 = D[u].adjVex;",
" this->TE[count].vex2 = u;",
" this->TE[count++].weight = D[u].lowCost;",
" D[u].lowCost = noEdge;",
" this->visited[u] = true;",
" }",
" delete[] D;",
"}",
]
kruskalList_codes = [
"",
]
kruskalMatrix_codes = [
"",
]
class Scene_White(Scene):
CONFIG = {
"camera_config": {
"background_color": WHITE,
"use_plot_depth": True,
}
}
class dfsMatrix(Scene_White):
def construct(self):
self.add(Text("dfsMatrix", font="思源宋体 Heavy", color=BLACK))
self.wait(1)
class primMatrix(Scene_White):
def construct(self):
'''
# printGraph + 显示矩阵
# prim + 动画演示
# printMst + 显示最小生成树
# 矩阵定量：visited[i] TE[i].vex1.vex2.weight
# 定量：noEdge-INF, verNum-6
# 变量：minCost, u, i, j, count
self.add(Text("primMatrix", font="思源宋体 Heavy", color=BLACK))
self.wait(1)
'''
# global
# Frame 整体框架
# height: 8 * width: 14.2
frame_edge = Rectangle(
color=GREEN,
stroke_opacity=0,
height=4,
width=4,
).to_corner(UL, buff=0)
frame_variable = Rectangle(
color=RED,
stroke_opacity=0,
height=4,
width=4,
).to_corner(DL, buff=0)
frame_animation = Rectangle(
color="#ffa400",
stroke_width=5,
stroke_opacity=0,
fill_color=WHITE,
fill_opacity=1,
height=8,
width=14.2 - 4 - 4.5,
).to_corner(ORIGIN, buff=0).shift(LEFT * 0.25)
frame_code = Rectangle(
color=BLUE,
stroke_opacity=0,
height=8,
width=4.5,
).to_corner(RIGHT, buff=0)
frame_right = Rectangle(
color=BLUE,
stroke_opacity=0,
height=8,
width=4,
).next_to(frame_code, buff=0)
# self.add(frame_edge, frame_variable, frame_animation, frame_code, frame_right)
# --------------- 动画框架 ---------------
# 标题
title = (Text("Prim", font="思源宋体 Heavy",
color=BLACK).scale(0.8).to_corner(UP).shift(UP * 0.25))
# self.add(title)
# 代码背景框
background = RoundedRectangle(
stroke_width=1,
stroke_color=GRAY,
fill_color="#EBEBEB",
fill_opacity=0.95,
plot_depth=-1,
corner_radius=0.05,
sheen_factor=0.1,
sheen_direction=UR,
)
background.set_height(7.9, stretch=True).set_width(4.4, stretch=True)
background.move_to(frame_code)
# 代码 + 移动框
class codeline_primMatrix(Text):
CONFIG = {
"size": 0.3,
"color": BLACK,
"font": "Consolas",
}
def __init__(self, text, **kwargs):
Text.__init__(self, text, **kwargs)
def ignore_space_len(code, num):
origin_len = len(code)
begin = origin_len - 1
record = 0
temp_codes = primMatrix_codes
for index in range(begin, 0, -1):
if temp_codes[num][index] == " " and record == 1:
return (origin_len - index - 2) * 0.076
elif temp_codes[num][index] == " " and record == 0:
record = 1
elif temp_codes[num][index] != " ":
record = 0
return origin_len * 0.076
def new_ignore_space_len(num):
return len(primMatrix_codes[num].strip()) * 0.087
codes_primMatrix = (VGroup(
*[codeline_primMatrix(code) for code in primMatrix_codes]).arrange(
DOWN, aligned_edge=LEFT,
buff=0.05).next_to(background.get_top(), DOWN,
buff=0).shift(RIGHT * 0 + DOWN * 0.06))
# 代码框
move_frame = RoundedRectangle(
stroke_width=2,
stroke_color=BLUE,
corner_radius=0.05,
)
# 代码框左边的小三角
arrow = Triangle(stroke_opacity=0, fill_opacity=1,
fill_color=RED).rotate(90 * DEGREES, axis=IN)
arrow.scale(0.065)
# 保存小三角和代码框的相对位置不变
arrow.add_updater(lambda a: a.next_to(move_frame, LEFT, buff=0.05))
# 一键添加代码背景 and 代码
# self.add(background, codes_primMatrix)
move_frame.set_width(new_ignore_space_len(7), stretch=True).set_height(
0.165, stretch=True).move_to(codes_primMatrix[7]).align_to(
codes_primMatrix[7], RIGHT).shift(RIGHT * 0.05)
"""
整体代码框移动测试
self.play(ShowCreation(move_frame), Write(arrow))
self.wait()
for i in range(3, len(primMatrix_codes)):
code_move(i)
self.wait()
"""
# edge 框
block = Rectangle(
color=BLACK,
stroke_width=2,
stroke_opacity=1,
fill_color=WHITE,
fill_opacity=1,
height=4 / 7,
width=4 / 7,
)
block.align_to(frame_edge, LEFT).align_to(frame_edge, UP)
edge_blocks = VGroup()
for i in range(7):
for j in range(7):
item = block.copy()
item.shift((4 / 7) * i * DOWN)
item.shift((4 / 7) * j * RIGHT)
edge_blocks.add(item)
# self.add(edge_blocks)
# 填入字符和颜色
edge_text, edge_color = VGroup(), VGroup()
edge_text.add(
Text(" ", font="思源宋体 Heavy", color=WHITE).move_to(edge_blocks[0]))
edge_color.add(
Rectangle(stroke_opacity=0,
fill_color=WHITE,
fill_opacity=1,
height=3.9 / 7,
width=3.9 / 7).move_to(edge_blocks[0]))
for i in range(7):
for j in range(7):
text, color = edge_text[0].copy(), edge_color[0].copy()
# 横排 Vx
if (i == 0 and j != 0):
text = Text("V" + str(j - 1),
font="思源宋体 Heavy",
color=BLACK).scale(0.5)
color.set_fill("#759464") # 绿色
# 竖排 Vx
if (j == 0 and i != 0):
text = Text("V" + str(i - 1),
font="思源宋体 Heavy",
color=BLACK).scale(0.5)
color.set_fill("#759464") # 绿色
# 斜中心 INF
if (i == j and i != 0 and j != 0):
text = Text("INF", font="思源宋体 Heavy",
color=BLACK).scale(0.5)
color.set_fill("#AD5D67") # 红色
# 其他 INF
if ((i == 1 and j == 5) or (i == 1 and j == 6)
or (i == 2 and j == 4) or (i == 2 and j == 6)
or (i == 5 and j == 1) or (i == 6 and j == 1)
or (i == 4 and j == 2) or (i == 6 and j == 2)
or (i == 4 and j == 5) or (i == 5 and j == 4)):
text = Text("INF", font="思源宋体 Heavy",
color=BLACK).scale(0.5)
color.set_fill("#AD5D67") # 红色
# 数字 1
if ((i == 1 and j == 3) or (i == 3 and j == 1)):
text = Text("1", font="思源宋体 Heavy", color=BLACK).scale(0.5)
color.set_fill("#589DD6") # 蓝色
# 数字 2
if ((i == 4 and j == 6) or (i == 6 and j == 4)):
text = Text("2", font="思源宋体 Heavy", color=BLACK).scale(0.5)
color.set_fill("#589DD6") # 蓝色
# 数字 3
if ((i == 2 and j == 5) or (i == 5 and j == 2)):
text = Text("3", font="思源宋体 Heavy", color=BLACK).scale(0.5)
color.set_fill("#589DD6") # 蓝色
# 数字 4
if ((i == 3 and j == 6) or (i == 6 and j == 3)):
text = Text("4", font="思源宋体 Heavy", color=BLACK).scale(0.5)
color.set_fill("#589DD6") # 蓝色
# 数字 5
if ((i == 3 and j == 4) or (i == 1 and j == 4)
or (i == 2 and j == 3) or (i == 4 and j == 3)
or (i == 4 and j == 1) or (i == 3 and j == 2)):
text = Text("5", font="思源宋体 Heavy", color=BLACK).scale(0.5)
color.set_fill("#589DD6") # 蓝色
# 数字 6
if ((i == 1 and j == 2) or (i == 3 and j == 5)
or (i == 5 and j == 6) or (i == 2 and j == 1)
or (i == 5 and j == 3) or (i == 6 and j == 5)):
text = Text("6", font="思源宋体 Heavy", color=BLACK).scale(0.5)
color.set_fill("#589DD6") # 蓝色
text.move_to(edge_blocks[7 * i + j])
edge_text.add(text)
color.move_to(edge_blocks[7 * i + j])
edge_color.add(color)
# 左斜框内的 edge 文本
edge_core = Text("edge", font="思源宋体 Heavy", color=BLACK).scale(0.5)
edge_core.move_to(edge_blocks[0])
edge_core.rotate(angle=45 * DEGREES)
# self.add(edge_color, edge_text, edge_core)
# 变量框
t2c = {
"adjVex": RED,
"lowCost": "#801dae",
}
variable_rectangle = Rectangle(
color="#003472",
height=3.8,
width=3.9,
stroke_width=1,
stroke_opacity=1).move_to(frame_variable)
# self.add(variable_rectangle)
variable_adjvex, variable_lowcost = VGroup(), VGroup()
variable_adjvex_num, variable_lowcost_num = VGroup(), VGroup()
for i in range(6):
if (i == 0):
variable_adjvex_tmp = Text("D[0].adjVex:",
font="思源宋体 Heavy",
color=BLACK,
t2c=t2c).scale(0.4)
variable_adjvex_tmp.align_to(variable_rectangle,
LEFT).align_to(
variable_rectangle, UP)
variable_adjvex_tmp.shift(RIGHT * 0.15 + DOWN * 0.1)
else:
variable_adjvex_tmp = Text("D[" + str(i) + "].adjVex:",
font="思源宋体 Heavy",
color=BLACK,
t2c=t2c).scale(0.4)
variable_adjvex_tmp.move_to(variable_adjvex[i - 1])
variable_adjvex_tmp.shift(DOWN * 0.5)
variable_adjvex.add(variable_adjvex_tmp)
for i in range(6):
if (i == 0):
variable_lowcost_tmp = Text("D[0].lowCost:",
font="思源宋体 Heavy",
color=BLACK,
t2c=t2c).scale(0.4)
variable_lowcost_tmp.align_to(variable_rectangle,
RIGHT).align_to(
variable_rectangle, UP)
variable_lowcost_tmp.shift(LEFT * 0.6 + DOWN * 0.1)
else:
variable_lowcost_tmp = Text("D[" + str(i) + "].lowCost:",
font="思源宋体 Heavy",
color=BLACK,
t2c=t2c).scale(0.4)
variable_lowcost_tmp.move_to(variable_lowcost[i - 1])
variable_lowcost_tmp.shift(DOWN * 0.5)
variable_lowcost.add(variable_lowcost_tmp)
# self.add(variable_adjvex, variable_lowcost)
variable_mincost = Text("minCost:",
font="思源宋体 Heavy",
color=BLACK,
t2c=t2c).scale(0.4)
variable_mincost.next_to(
variable_adjvex, DOWN,
buff=0.25) # .align_to(variable_adjvex, RIGHT)
variable_u = Text("u:", font="思源宋体 Heavy", color=BLACK,
t2c=t2c).scale(0.4)
variable_u.next_to(variable_mincost, DOWN,
buff=0.25) # .align_to(variable_mincost, RIGHT)
variable_i = Text("i:", font="思源宋体 Heavy", color=BLACK,
t2c=t2c).scale(0.4)
variable_i.next_to(variable_lowcost, DOWN,
buff=0.25) # .align_to(variable_lowcost, RIGHT)
variable_j = Text("j:", font="思源宋体 Heavy", color=BLACK,
t2c=t2c).scale(0.4)
variable_j.next_to(variable_i, DOWN,
buff=0.25) # .align_to(variable_j, RIGHT)
# self.add(variable_mincost, variable_u, variable_i, variable_j)
adjvex_list = [0, 0, 0, 0, 2, 2]
for i in range(6):
num = Text(str(adjvex_list[i]), font="思源宋体 Heavy",
color=BLACK).scale(0.45)
num.next_to(variable_adjvex[i], RIGHT, buff=0.1)
variable_adjvex_num.add(num)
inf = Text("INF", font="思源宋体 Heavy", color=BLACK).scale(0.45)
inf.next_to(variable_lowcost[i], RIGHT, buff=0.1)
variable_lowcost_num.add(inf)
# self.add(variable_adjvex_num, variable_lowcost_num)
variable_mincost_num = Text("INF", font="思源宋体 Heavy",
color=BLACK).scale(0.45)
variable_mincost_num.next_to(variable_mincost, RIGHT, buff=0.1)
variable_u_num = Text("0", font="思源宋体 Heavy", color=BLACK).scale(0.45)
variable_u_num.next_to(variable_u, RIGHT, buff=0.1)
variable_i_num = Text("0", font="思源宋体 Heavy", color=BLACK).scale(0.45)
variable_i_num.next_to(variable_i, RIGHT, buff=0.1)
variable_j_num = Text("0", font="思源宋体 Heavy", color=BLACK).scale(0.45)
variable_j_num.next_to(variable_j, RIGHT, buff=0.1)
# self.add(variable_mincost_num, variable_u_num, variable_i_num, variable_j_num)
division = Rectangle(color="#003472",
height=0.01,
width=3.9,
stroke_width=1,
stroke_opacity=1)
division.move_to(frame_variable).shift(DOWN * 1.05)
# self.add(division)
# 动画中心区域
circles, lines = VGroup(), VGroup()
circle = Circle(radius=0.4,
stroke_width=3,
stroke_color=BLACK,
stroke_opacity=1)
circle0, circle1, circle2, circle3, circle4, circle5 = circle.copy(
), circle.copy(), circle.copy(), circle.copy(), circle.copy(
), circle.copy()
circle0.move_to(frame_animation).shift(UP * 2.5 + RIGHT * 0.25)
circle2.move_to(circle0).shift(DOWN * 1.25)
circle1.move_to(circle2).shift(LEFT * 1.25)
circle3.move_to(circle2).shift(RIGHT * 1.25)
circle4.move_to(circle2).shift(DOWN * 1.25 + LEFT * 0.65)
circle5.move_to(circle2).shift(DOWN * 1.25 + RIGHT * 0.65)
circles.add(circle0, circle1, circle2, circle3, circle4, circle5)
# self.add(circles)
base_0 = circles[0].point_at_angle((90 * 3 - 45) * DEGREES)
base_1 = circles[1].point_at_angle((90 - 45) * DEGREES)
line01 = Line(np.array(base_0),
np.array(base_1),
color=BLACK,
stroke_width=3)
base_0 = circles[0].point_at_angle((90 * 3) * DEGREES)
base_2 = circles[2].point_at_angle((90) * DEGREES)
line02 = Line(np.array(base_0),
np.array(base_2),
color=BLACK,
stroke_width=3)
base_0 = circles[0].point_at_angle((90 * 3 + 45) * DEGREES)
base_3 = circles[3].point_at_angle((90 + 45) * DEGREES)
line03 = Line(np.array(base_0),
np.array(base_3),
color=BLACK,
stroke_width=3)
base_1 = circles[1].point_at_angle((0) * DEGREES)
base_2 = circles[2].point_at_angle((90 * 2) * DEGREES)
line12 = Line(np.array(base_1),
np.array(base_2),
color=BLACK,
stroke_width=3)
base_2 = circles[2].point_at_angle((0) * DEGREES)
base_3 = circles[3].point_at_angle((90 * 2) * DEGREES)
line23 = Line(np.array(base_2),
np.array(base_3),
color=BLACK,
stroke_width=3)
base_2 = circles[2].point_at_angle((90 * 3) * DEGREES)
base_4 = circles[4].point_at_angle((90 - 45) * DEGREES)
line24 = Line(np.array(base_2),
np.array(base_4),
color=BLACK,
stroke_width=3)
base_2 = circles[2].point_at_angle((90 * 3) * DEGREES)
base_5 = circles[5].point_at_angle((90 + 45) * DEGREES)
line25 = Line(np.array(base_2),
np.array(base_5),
color=BLACK,
stroke_width=3)
base_1 = circles[1].point_at_angle((90 * 3) * DEGREES)
base_4 = circles[4].point_at_angle((90 + 45) * DEGREES)
line14 = Line(np.array(base_1),
np.array(base_4),
color=BLACK,
stroke_width=3)
base_3 = circles[3].point_at_angle((90 * 3) * DEGREES)
base_5 = circles[5].point_at_angle((90 - 45) * DEGREES)
line35 = Line(np.array(base_3),
np.array(base_5),
color=BLACK,
stroke_width=3)
base_4 = circles[4].point_at_angle((0) * DEGREES)
base_5 = circles[5].point_at_angle((90 * 2) * DEGREES)
line45 = Line(np.array(base_4),
np.array(base_5),
color=BLACK,
stroke_width=3)
lines.add(line01, line02, line03, line12, line23, line24, line25,
line14, line35, line45)
# self.add(lines)
nodes, fires = VGroup(), VGroup()
node0 = Text("0", font="江西拙楷", color=BLACK).scale(0.85)
node0.move_to(circles[0])
node1 = Text("1", font="江西拙楷", color=BLACK).scale(0.85)
node1.move_to(circles[1])
node2 = Text("2", font="江西拙楷", color=BLACK).scale(0.85)
node2.move_to(circles[2])
node3 = Text("3", font="江西拙楷", color=BLACK).scale(0.85)
node3.move_to(circles[3])
node4 = Text("4", font="江西拙楷", color=BLACK).scale(0.85)
node4.move_to(circles[4])
node5 = Text("5", font="江西拙楷", color=BLACK).scale(0.85)
node5.move_to(circles[5])
nodes.add(node0, node1, node2, node3, node4, node5)
# self.add(nodes)
fire01 = Text("6", font="思源宋体 Heavy", color="#589dd6").scale(0.5)
fire01.move_to(lines[0])
fire02 = Text("1", font="思源宋体 Heavy", color="#589dd6").scale(0.5)
fire02.move_to(lines[1])
fire03 = Text("5", font="思源宋体 Heavy", color="#589dd6").scale(0.5)
fire03.move_to(lines[2])
fire12 = Text("5", font="思源宋体 Heavy", color="#589dd6").scale(0.5)
fire12.move_to(lines[3])
fire23 = Text("5", font="思源宋体 Heavy", color="#589dd6").scale(0.5)
fire23.move_to(lines[4])
fire24 = Text("6", font="思源宋体 Heavy", color="#589dd6").scale(0.5)
fire24.move_to(lines[5])
fire25 = Text("4", font="思源宋体 Heavy", color="#589dd6").scale(0.5)
fire25.move_to(lines[6])
fire14 = Text("3", font="思源宋体 Heavy", color="#589dd6").scale(0.5)
fire14.move_to(lines[7])
fire35 = Text("2", font="思源宋体 Heavy", color="#589dd6").scale(0.5)
fire35.move_to(lines[8])
fire45 = Text("6", font="思源宋体 Heavy", color="#589dd6").scale(0.5)
fire45.move_to(lines[9])
fires.add(fire01, fire02, fire03, fire12, fire23, fire24, fire25,
fire14, fire35, fire45)
# self.add(fires)
# 动画下方区域
variable_visited = VGroup()
for i in range(6):
if (i == 0):
variable_visited_tmp = Text("this->visited[0]:",
font="思源宋体 Heavy",
color=BLACK).scale(0.5)
variable_visited_tmp.move_to(frame_animation).align_to(
frame_animation, UP)
variable_visited_tmp.shift(DOWN * 4.8 + LEFT * 1)
elif (i == 1):
variable_visited_tmp = Text("this->visited[1]:",
font="思源宋体 Heavy",
color=BLACK).scale(0.5)
variable_visited_tmp.move_to(frame_animation).align_to(
frame_animation, UP)
variable_visited_tmp.shift(DOWN * 5.3 + RIGHT * 0.5)
else:
variable_visited_tmp = Text("this->visited[" + str(i) + "]:",
font="思源宋体 Heavy",
color=BLACK).scale(0.5)
variable_visited_tmp.move_to(variable_visited[i - 2])
variable_visited_tmp.shift(DOWN * 1)
variable_visited.add(variable_visited_tmp)
# self.add(variable_visited)
variable_visited_bool = VGroup()
for i in range(6):
bool = Text("false", font="思源宋体 Heavy", color=BLACK).scale(0.45)
bool.next_to(variable_visited[i], RIGHT, buff=0.1)
variable_visited_bool.add(bool)
# self.add(variable_visited_bool)
# 第二视角整体对象
variable_right = Rectangle(color="#003472",
height=7.9,
width=3.9,
stroke_width=1,
stroke_opacity=1).move_to(frame_right)
# self.add(variable_right)
t3c = {
"count": "#2932e1",
"noEdge": RED,
"EdgeType": "#da1884",
"VerNum": "#bd874a",
"vex1": "#589dd6",
"vex2": "#801dae",
}
variable_count = Text("count:",
font="思源宋体 Heavy",
color=BLACK,
t2c=t3c).scale(0.4)
variable_count.align_to(variable_right,
LEFT).align_to(variable_right, UP)
variable_count.shift(RIGHT * 0.25 + DOWN * 0.12)
variable_noedge = Text("noEdge = 0x3f3f3f3f(INF)",
font="思源宋体 Heavy",
color=BLACK,
t2c=t3c).scale(0.4)
variable_noedge.align_to(variable_right,
RIGHT).align_to(variable_right, UP)
variable_noedge.shift(LEFT * 0.15 + DOWN * 0.1)
variable_edgetype = Text("EdgeType = int",
font="思源宋体 Heavy",
color=BLACK,
t2c=t3c).scale(0.4)
variable_edgetype.next_to(variable_count, DOWN,
buff=0.3).shift(RIGHT * 0.4)
variable_vernum = Text("this->VerNum = 6",
font="思源宋体 Heavy",
color=BLACK,
t2c=t3c).scale(0.4)
variable_vernum.next_to(variable_noedge, DOWN,
buff=0.25).shift(RIGHT * 0.35)
# self.add(variable_count, variable_noedge, variable_edgetype, variable_vernum)
variable_count_num = Text("0", font="思源宋体 Heavy",
color=BLACK).scale(0.4)
variable_count_num.next_to(variable_count, RIGHT, buff=0.1)
# self.add(variable_count_num)
variable_vex1, variable_vex2 = VGroup(), VGroup()
variable_vex1_num, variable_vex2_num = VGroup(), VGroup()
for i in range(5):
if (i == 0):
variable_vex1_tmp = Text("this->TE[0].vex1:",
font="思源宋体 Heavy",
color=BLACK,
t2c=t3c).scale(0.4)
variable_vex1_tmp.move_to(variable_right).align_to(
variable_right, UP)
variable_vex1_tmp.shift(DOWN * 1.5)
variable_vex2_tmp = Text("this->TE[0].vex2:",
font="思源宋体 Heavy",
color=BLACK,
t2c=t3c).scale(0.4)
variable_vex2_tmp.move_to(variable_vex1_tmp)
variable_vex2_tmp.shift(DOWN * 0.3)
else:
variable_vex1_tmp = Text("this->TE[" + str(i) + "].vex1:",
font="思源宋体 Heavy",
color=BLACK,
t2c=t3c).scale(0.4)
variable_vex1_tmp.move_to(variable_vex2[i - 1])
variable_vex1_tmp.shift(DOWN * 0.35)
variable_vex2_tmp = Text("this->TE[" + str(i) + "].vex2:",
font="思源宋体 Heavy",
color=BLACK,
t2c=t3c).scale(0.4)
variable_vex2_tmp.move_to(variable_vex1_tmp)
variable_vex2_tmp.shift(DOWN * 0.3)
variable_vex1.add(variable_vex1_tmp)
variable_vex2.add(variable_vex2_tmp)
# self.add(variable_vex1, variable_vex2)
vex1_list = [0, 2, 5, 3, 1]
vex2_list = [2, 5, 3, 1, 4]
for i in range(5):
num = Text(str(vex1_list[i]),
font="思源宋体 Heavy",
color=BLACK,
t2c=t3c).scale(0.45)
num.next_to(variable_vex1[i], RIGHT, buff=0.1)
variable_vex1_num.add(num.copy())
num = Text(str(vex2_list[i]),
font="思源宋体 Heavy",
color=BLACK,
t2c=t3c).scale(0.45)
num.next_to(variable_vex2[i], RIGHT, buff=0.1)
variable_vex2_num.add(num.copy())
# self.add(variable_vex1_num, variable_vex2_num)
division_right_one = Rectangle(color="#003472",
height=0.01,
width=3.9,
stroke_width=1,
stroke_opacity=1)
division_right_two = division_right_one.copy()
division_right_one.move_to(variable_right).shift(UP * 3)
division_right_two.move_to(variable_right).shift(DOWN * 1.25)
# self.add(division_right_one, division_right_two)
circles_second, nodes_second = circles.copy(), nodes.copy()
circles_second[0].move_to(variable_right).align_to(
variable_right, DOWN).align_to(variable_right, LEFT)
circles_second[0].shift(UP * 1.5 + RIGHT * 0.3)
circles_second[2].move_to(variable_right).align_to(
variable_right, DOWN)
circles_second[2].shift(UP * 1.5)
circles_second[5].move_to(variable_right).align_to(
variable_right, DOWN).align_to(variable_right, RIGHT)
circles_second[5].shift(UP * 1.5 + LEFT * 0.3)
circles_second[4].move_to(variable_right).align_to(
variable_right, DOWN).align_to(variable_right, LEFT)
circles_second[4].shift(UP * 0.3 + RIGHT * 0.3)
circles_second[1].move_to(variable_right).align_to(
variable_right, DOWN)
circles_second[1].shift(UP * 0.3)
circles_second[3].move_to(variable_right).align_to(
variable_right, DOWN).align_to(variable_right, RIGHT)
circles_second[3].shift(UP * 0.3 + LEFT * 0.3)
circles_second.set_color(WHITE)
circles_second.set_stroke(BLACK)
# self.add(circles_second)
for i in range(6):
nodes_second[i].move_to(circles_second[i])
# self.add(nodes_second)
lines_second, fires_second = VGroup(), VGroup()
base_left = circles_second[0].point_at_angle((0) * DEGREES)
base_right = circles_second[2].point_at_angle((90 * 2) * DEGREES)
lineone = Line(np.array(base_left),
np.array(base_right),
color=BLACK,
stroke_width=3)
lines_second.add(lineone)
base_up = circles_second[5].point_at_angle((90 * 3) * DEGREES)
base_down = circles_second[3].point_at_angle((90) * DEGREES)
linetwo = Line(np.array(base_up),
np.array(base_down),
color=BLACK,
stroke_width=3)
line_tmp = lineone.copy()
line_tmp.next_to(circles_second[2], RIGHT, buff=0)
lines_second.add(line_tmp.copy())
lines_second.add(linetwo)
line_tmp.next_to(circles_second[1], RIGHT, buff=0)
lines_second.add(line_tmp.copy())
line_tmp.next_to(circles_second[4], RIGHT, buff=0)
lines_second.add(line_tmp.copy())
# self.add(lines_second)
num = Text("1", font="思源宋体 Heavy", color="#589dd6").scale(0.5)
num.move_to(lines_second[0]).shift(UP * 0.2)
fires_second.add(num.copy())
num = Text("4", font="思源宋体 Heavy", color="#589dd6").scale(0.5)
num.move_to(lines_second[1]).shift(UP * 0.2)
fires_second.add(num.copy())
num = Text("2", font="思源宋体 Heavy", color="#589dd6").scale(0.5)
num.move_to(lines_second[2]).shift(RIGHT * 0.2)
fires_second.add(num.copy())
num = Text("5", font="思源宋体 Heavy", color="#589dd6").scale(0.5)
num.move_to(lines_second[3]).shift(UP * 0.2)
fires_second.add(num.copy())
num = Text("3", font="思源宋体 Heavy", color="#589dd6").scale(0.5)
num.move_to(lines_second[4]).shift(UP * 0.2)
fires_second.add(num.copy())
# self.add(fires_second)
# 全部视角整体对象
Camera_left = VGroup()
Camera_left.add(frame_edge, frame_variable, frame_animation,
frame_code, frame_right)
Camera_left.add(title)
Camera_left.add(background, codes_primMatrix)
# Camera_left.add(move_frame)
Camera_left.add(edge_blocks)
Camera_left.add(edge_color, edge_text, edge_core)
Camera_left.add(variable_rectangle)
Camera_left.add(variable_adjvex, variable_lowcost)
Camera_left.add(variable_mincost, variable_u, variable_i, variable_j)
# Camera_left.add(variable_adjvex_num, variable_lowcost_num)
# Camera_left.add(variable_mincost_num, variable_u_num, variable_i_num, variable_j_num)
Camera_left.add(division)
Camera_left.add(circles)
Camera_left.add(lines)
Camera_left.add(nodes)
Camera_left.add(fires)
Camera_left.add(variable_visited)
# Camera_left.add(variable_visited_bool)
Camera_left.add(variable_right)
Camera_left.add(variable_count, variable_noedge, variable_edgetype,
variable_vernum)
Camera_left.add(variable_count_num)
Camera_left.add(variable_vex1, variable_vex2)
Camera_left.add(variable_vex1_num, variable_vex2_num)
Camera_left.add(division_right_one, division_right_two)
Camera_left.add(circles_second)
Camera_left.add(nodes_second)
Camera_left.add(lines_second)
Camera_left.add(fires_second)
self.add(Camera_left)
# 调成透明
variable_vex1_num.set_opacity(0)
variable_vex2_num.set_opacity(0)
circles_second.set_opacity(0)
nodes_second.set_opacity(0)
lines_second.set_opacity(0)
fires_second.set_opacity(0)
# 借用 OOP 的方法
# 面向对象零 (包装代码框移动)
def code_move(i, *method):
# 调用方法举例: code_move(1, 0, FadeIn(vec_pos_all))
self.play(
*method,
move_frame.set_width,
new_ignore_space_len(i),
move_frame.move_to,
codes_primMatrix[i],
move_frame.align_to,
codes_primMatrix[i],
RIGHT,
move_frame.shift,
RIGHT * 0.05,
move_frame.set_height,
{
"height": 0.165,
"stretch": True
},
run_time=1.5,
)
self.wait()
'''
self.play(ShowCreation(move_frame), Write(arrow))
self.wait()
code_move(7)
self.wait()
'''
# 关于颜色的简要概括
edge_BLUE = "#589DD6"
edge_ORANGE = "#d7954a"
edge_RED = "#AD5D67"
# primMatrix
self.wait()
# 代码框开始运作
self.play(ShowCreation(move_frame), Write(arrow))
self.wait()
Camera_left.add(move_frame)
code_move(8)
# 出现 u i j 的值
self.play(FadeIn(variable_u_num), FadeIn(variable_i_num),
FadeIn(variable_j_num))
self.wait()
Camera_left.add(variable_u_num, variable_i_num, variable_j_num)
# 左右移动视角
self.play(Camera_left.shift, LEFT * 4)
self.wait(3)
self.play(Camera_left.shift, RIGHT * 4)
self.wait()
code_move(9)
# 开始循环
for i in range(6):
if (i != 0):
variable_i_num_tmp = Text(str(i),
font="思源宋体 Heavy",
color=BLACK).scale(0.45)
variable_i_num_tmp.next_to(variable_i, RIGHT, buff=0.1)
self.play(Transform(variable_i_num, variable_i_num_tmp))
code_move(11)
self.play(FadeIn(variable_visited_bool[i]))
self.wait()
code_move(12)
self.play(FadeIn(variable_lowcost_num[i]))
self.wait()
code_move(9)
Camera_left.add(variable_visited_bool)
Camera_left.add(variable_lowcost_num)
code_move(14)
code_move(15)
# 第一个 visit 改成 true，圈圈变红
bool = Text("true", font="思源宋体 Heavy", color=BLACK).scale(0.45)
bool.next_to(variable_visited[0], RIGHT, buff=0.1)
self.play(Transform(variable_visited_bool[0], bool),
circles[0].set_color, RED)
self.wait()
# -------------------- 针对结点 u=0 --------------------
variable_i_num_tmp = Text("1", font="思源宋体 Heavy",
color=BLACK).scale(0.45)
variable_i_num_tmp.next_to(variable_i, RIGHT, buff=0.1)
code_move(16)
self.play(Transform(variable_i_num, variable_i_num_tmp)) # i 变成 1
self.wait()
# 内部第一个循环（结点 0）
# j=0 [0][0] 不产生内循环
code_move(18)
self.play(variable_visited[0].set_color, edge_ORANGE,
edge_color[1 * 7 + 2].set_color,
edge_ORANGE) # 第一个 visit 变橙色，对应 edge 变橙色
self.wait()
code_move(19)
# j=1 [0][1] 不产生内循环
variable_j_num_tmp = Text("1", font="思源宋体 Heavy",
color=BLACK).scale(0.45)
variable_j_num_tmp.next_to(variable_j, RIGHT, buff=0.1)
code_move(18)
self.play(
Transform(variable_j_num, variable_j_num_tmp),
edge_color[1 * 7 + 2].set_color,
edge_RED,
edge_color[1 * 7 + 3].set_color,
edge_ORANGE,
edge_color[2 * 7 + 2].set_color,
edge_ORANGE,
variable_visited[1].set_color,
edge_ORANGE,
variable_visited[0].set_color,
BLACK,
) # 下一个 visit 变橙色 + 上一个 visit 颜色褪回本色，对应 edge 变橙色 + 上一个颜色褪回本色
self.wait()
code_move(19)
# 满足 if 条件
code_move(21)
# 不是最小
code_move(23)
variable_lowcost_num_tmp = Text("6", font="思源宋体 Heavy",
color=BLACK).scale(0.45)
variable_lowcost_num_tmp.next_to(variable_lowcost[1], RIGHT, buff=0.1)
self.play(
Transform(variable_lowcost_num[1],
variable_lowcost_num_tmp.copy()))
self.wait()
code_move(24)
variable_adjvex_num_tmp = Text("0", font="思源宋体 Heavy",
color=BLACK).scale(0.45)
variable_adjvex_num_tmp.next_to(variable_adjvex[1], RIGHT, buff=0.1)
# self.play(Transform(variable_adjvex_num[1], variable_adjvex_num_tmp.copy()))
self.play(ShowCreation(variable_adjvex_num[1]))
self.wait()
Camera_left.add(variable_adjvex_num[1])
# j=2 [0][2] 不产生内循环
variable_j_num_tmp = Text("2", font="思源宋体 Heavy",
color=BLACK).scale(0.45)
variable_j_num_tmp.next_to(variable_j, RIGHT, buff=0.1)
code_move(18)
self.play(
Transform(variable_j_num, variable_j_num_tmp),
edge_color[1 * 7 + 3].set_color,
edge_BLUE,
edge_color[2 * 7 + 2].set_color,
edge_BLUE,
edge_color[1 * 7 + 4].set_color,
edge_ORANGE,
edge_color[3 * 7 + 2].set_color,
edge_ORANGE,
variable_visited[2].set_color,
edge_ORANGE,
variable_visited[1].set_color,
BLACK,
) # 下一个 visit 变橙色 + 上一个 visit 颜色褪回本色，对应 edge 变橙色 + 上一个颜色褪回本色
self.wait()
code_move(19)
# 满足 if 条件
code_move(21)
# 不是最小
code_move(23)
variable_lowcost_num_tmp = Text("1", font="思源宋体 Heavy",
color=BLACK).scale(0.45)
variable_lowcost_num_tmp.next_to(variable_lowcost[2], RIGHT, buff=0.1)
self.play(
Transform(variable_lowcost_num[2],
variable_lowcost_num_tmp.copy()))
self.wait()
code_move(24)
variable_adjvex_num_tmp = Text("0", font="思源宋体 Heavy",
color=BLACK).scale(0.45)
variable_adjvex_num_tmp.next_to(variable_adjvex[2], RIGHT, buff=0.1)
# self.play(Transform(variable_adjvex_num[2], variable_adjvex_num_tmp.copy()))
self.play(ShowCreation(variable_adjvex_num[2]))
self.wait()
Camera_left.add(variable_adjvex_num[2])
# j=3 [0][3] 不产生内循环
variable_j_num_tmp = Text("3", font="思源宋体 Heavy",
color=BLACK).scale(0.45)
variable_j_num_tmp.next_to(variable_j, RIGHT, buff=0.1)
code_move(18)
self.play(
Transform(variable_j_num, variable_j_num_tmp),
edge_color[1 * 7 + 4].set_color,
edge_BLUE,
edge_color[3 * 7 + 2].set_color,
edge_BLUE,
edge_color[1 * 7 + 5].set_color,
edge_ORANGE,
edge_color[4 * 7 + 2].set_color,
edge_ORANGE,
variable_visited[3].set_color,
edge_ORANGE,
variable_visited[2].set_color,
BLACK,
) # 下一个 visit 变橙色 + 上一个 visit 颜色褪回本色，对应 edge 变橙色 + 上一个颜色褪回本色
self.wait()
code_move(19)
# 满足 if 条件
code_move(21)
# 不是最小
code_move(23)
variable_lowcost_num_tmp = Text("5", font="思源宋体 Heavy",
color=BLACK).scale(0.45)
variable_lowcost_num_tmp.next_to(variable_lowcost[3], RIGHT, buff=0.1)
self.play(