立方体透视投影 实验代码 头歌

很抱歉，我不清楚你具体需要哪种编程语言的实验代码。不过，如果你需要立方体透视投影的实验代码，可以参考以下Python代码：

import pygame
from pygame.locals import *
import math

# 定义常量
W, H = 800, 600  # 窗口大小
FOV = math.pi / 3  # 视角
HALF_W, HALF_H = W // 2, H // 2  # 窗口中心点
CUBE_SIZE = 100  # 立方体大小

# 定义立方体八个顶点
cube_points = [
    (-1, -1, -1),
    (-1, 1, -1),
    (1, 1, -1),
    (1, -1, -1),
    (-1, -1, 1),
    (-1, 1, 1),
    (1, 1, 1),
    (1, -1, 1)
]

# 定义立方体六个面，每个面是由四个点组成的tuple
cube_faces = [
    (0, 1, 2, 3),
    (4, 5, 6, 7),
    (0, 1, 5, 4),
    (2, 3, 7, 6),
    (0, 3, 7, 4),
    (1, 2, 6, 5)
]

# 定义旋转矩阵，绕x,y,z轴旋转的角度分别为rx,ry,rz
def rotation_matrix(rx, ry, rz):
    cos_rx, sin_rx = math.cos(rx), math.sin(rx)
    cos_ry, sin_ry = math.cos(ry), math.sin(ry)
    cos_rz, sin_rz = math.cos(rz), math.sin(rz)

    # 绕x轴旋转
    rx_matrix = [
        [1, 0, 0],
        [0, cos_rx, -sin_rx],
        [0, sin_rx, cos_rx]
    ]

    # 绕y轴旋转
    ry_matrix = [
        [cos_ry, 0, sin_ry],
        [0, 1, 0],
        [-sin_ry, 0, cos_ry]
    ]

    # 绕z轴旋转
    rz_matrix = [
        [cos_rz, -sin_rz, 0],
        [sin_rz, cos_rz, 0],
        [0, 0, 1]
    ]

    return matmul(matmul(rz_matrix, ry_matrix), rx_matrix)

# 矩阵乘法
def matmul(a, b):
    zip_b = list(zip(*b))
    return [[sum(ele_a * ele_b for ele_a, ele_b in zip(row_a, col_b))
             for col_b in zip_b] for row_a in a]

# 透视投影
def perspective_projection(point):
    x, y, z = point
    if z == 0:
        z = 0.001  # 避免除以0
    f = 1 / math.tan(FOV / 2)
    k = W / 2
    l = H / 2
    return (int(k + x * f / z * k), int(l - y * f / z * l))

# 初始化pygame
pygame.init()
screen = pygame.display.set_mode((W, H))
pygame.display.set_caption("Cube Projection")

# 开始渲染循环
while True:
    for event in pygame.event.get():
        if event.type == QUIT:
            pygame.quit()
            exit()

    # 清空背景
    screen.fill((255, 255, 255))

    # 计算旋转矩阵
    rx, ry, rz = 0, pygame.time.get_ticks() / 1000, 0
    rot_matrix = rotation_matrix(rx, ry, rz)

    # 渲染每个面
    for face in cube_faces:
        points = [cube_points[i] for i in face]
        projected_points = []
        for point in points:
            # 应用旋转矩阵
            rotated_point = matmul(rot_matrix, point)
            # 透视投影
            projected_point = perspective_projection(rotated_point)
            projected_points.append(projected_point)

        # 绘制面
        pygame.draw.polygon(screen, (0, 0, 0), projected_points, 1)

    # 刷新屏幕
    pygame.display.flip()

这段代码使用了Pygame库来进行图形渲染，实现了立方体的透视投影，并可以对立方体进行旋转。你可以根据自己的需要修改代码，比如修改立方体大小、调整视角等。