Python Turtle全屏背景开发：中央太阳与棕榈树剪影绘制求助

你当前的代码仅绘制了局部渐变条，且未添加棕榈树剪影。以下是完善后的实现，覆盖全屏渐变背景、中央太阳和两侧棕榈树剪影：

关键改进点 #

• 全屏渐变背景：获取屏幕实际尺寸，遍历整个高度绘制水平渐变条，覆盖全屏宽度
• 棕榈树剪影绘制：通过自定义函数绘制黑色填充的棕榈树轮廓，包含树干和树叶
• 层级优化：按「背景渐变→太阳→剪影」的顺序绘制，确保视觉层级符合原图效果

完整代码 #

import turtle

# 初始化全屏屏幕
screen = turtle.Screen()
screen.setup(width=1.0, height=1.0)
screen.bgcolor("black")  # 初始深色背景避免绘制闪烁
screen.tracer(0)  # 关闭实时动画加速绘制
turtle.speed(0)
turtle.colormode(255)
turtle.hideturtle()

# 获取屏幕尺寸参数
screen_width = screen.window_width()
screen_height = screen.window_height()
half_width = screen_width // 2
half_height = screen_height // 2

# 绘制上部渐变：蓝紫色过渡到粉紫色
for y in range(half_height, 0, -1):
    ratio = (half_height - y) / half_height
    r = int(154 + 67 * ratio)
    g = int(0 + 67 * ratio)
    b = int(254 - 67 * ratio)
    turtle.color(r, g, b)
    turtle.penup()
    turtle.goto(-half_width, y)
    turtle.pendown()
    turtle.goto(half_width, y)

# 绘制中部渐变：粉紫色过渡到橙红色
for y in range(0, -half_height // 2, -1):
    ratio = abs(y) / (half_height // 2)
    r = 221
    g = int(67 + 55 * ratio)
    b = int(187 - 55 * ratio)
    turtle.color(r, g, b)
    turtle.penup()
    turtle.goto(-half_width, y)
    turtle.pendown()
    turtle.goto(half_width, y)

# 绘制下部渐变：橙红色过渡到深褐色
for y in range(-half_height // 2, -half_height, -1):
    ratio = (abs(y) - half_height // 2) / (half_height // 2)
    r = 221
    g = 122
    b = int(132 - 52 * ratio)
    turtle.color(r, g, b)
    turtle.penup()
    turtle.goto(-half_width, y)
    turtle.pendown()
    turtle.goto(half_width, y)

# 绘制中央黄色太阳
turtle.penup()
turtle.goto(0, -100)  # 调整位置让太阳垂直居中
turtle.pendown()
turtle.fillcolor("yellow")
turtle.begin_fill()
turtle.circle(100)
turtle.end_fill()

# 自定义棕榈树绘制函数
def draw_palm_tree(x, y):
    turtle.penup()
    turtle.goto(x, y)
    turtle.pendown()
    turtle.fillcolor("black")
    turtle.begin_fill()
    # 绘制树干
    for _ in range(2):
        turtle.forward(30)
        turtle.left(90)
        turtle.forward(150)
        turtle.left(90)
    # 绘制三组树叶
    turtle.penup()
    turtle.goto(x + 15, y + 150)
    turtle.pendown()
    turtle.setheading(90)
    for _ in range(3):
        turtle.left(120)
        turtle.forward(100)
        turtle.left(120)
        turtle.forward(100)
        turtle.left(120)
        turtle.forward(100)
        turtle.right(60)
    turtle.end_fill()

# 绘制左右两侧的棕榈树剪影
draw_palm_tree(-half_width + 80, -half_height + 20)
draw_palm_tree(half_width - 110, -half_height + 20)

screen.update()  # 一次性更新屏幕显示
turtle.done()

细节说明 #

• 使用screen.tracer(0)关闭实时动画，配合screen.update()批量刷新，大幅提升渐变背景的绘制速度
• 渐变色彩参数完全匹配你提供的原图过渡规律
• 棕榈树采用黑色填充实现剪影效果，位置固定在屏幕左右下角，贴合原图布局

内容的提问来源于stack exchange，提问作者Louis Lam