怎么使用Python实现太阳系的运转

本篇内容主要讲解"怎么使用Python实现太阳系的运转"，感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷，实用性强。下面就让小编来带大家学习"怎么使用Python实现太阳系的运转"吧!

实现

功能的实现，主要要到的还是 Python 的 pygame 库，我们先导入需要的所有 Python 库，代码如下所示：

import sysimport mathimport pygamefrom pygame.locals import *

接着定义一些常量（如：颜色、宽高等）及创建窗口，代码如下所示：

WHITE =(255, 255, 255)SILVER = (192, 192, 192)BLACK = (0, 0, 0)GREEN = (0, 255, 0)RED = (255, 0, 0)BLUE = (0, 0, 255)YELLOW = (255, 255, 0)SandyBrown = (244, 164, 96)PaleGodenrod = (238, 232, 170)PaleVioletRed = (219, 112, 147)Thistle = (216, 191, 216)size = width, height = 800, 600screen = pygame.display.set_mode(size)pygame.display.set_caption("太阳系")# 创建时钟(控制游戏循环频率)clock = pygame.time.Clock()# 定义三个空列表pos_v = pos_e = pos_mm = []# 地球、月球等行星转过的角度roll_v = roll_e = roll_m = 0roll_3 = roll_4 = roll_5 = roll_6 = roll_7 = roll_8 = 0# 太阳的位置（中心）position = size[0] // 2, size[1] // 2

我们先在窗口中画一个太阳，代码如下：

pygame.draw.circle(screen, YELLOW, position, 60, 0)

看一下效果：

接着画一个地球，让其绕着太阳旋转，代码如下：

# 画地球roll_e += 0.01  # 假设地球每帧公转 0.01 pipos_e_x = int(size[0] // 2 + size[1] // 6 * math.sin(roll_e))pos_e_y = int(size[1] // 2 + size[1] // 6 * math.cos(roll_e))pygame.draw.circle(screen, BLUE, (pos_e_x, pos_e_y), 15, 0)# 地球的轨迹线pos_e.append((pos_e_x, pos_e_y))if len(pos_e) > 255:  pos_e.pop(0)for i in range(len(pos_e)):  pygame.draw.circle(screen, SILVER, pos_e[i], 1, 0)

看一下效果：

我们再接着画月球，代码如下：

# 画月球roll_m += 0.1pos_m_x = int(pos_e_x + size[1] // 20 * math.sin(roll_m))pos_m_y = int(pos_e_y + size[1] // 20 * math.cos(roll_m))pygame.draw.circle(screen, SILVER, (pos_m_x, pos_m_y), 8, 0)# 月球的轨迹线pos_mm.append((pos_m_x, pos_m_y))if len(pos_mm) > 255:  pos_mm.pop(0)for i in range(len(pos_mm)):  pygame.draw.circle(screen, SILVER, pos_mm[i], 1, 0)

看一下效果：

其他几个星球的实现也类似，代码如下：

# 其他几个行星roll_3 += 0.03pos_3_x = int(size[0] // 2 + size[1] // 3.5 * math.sin(roll_3))pos_3_y = int(size[1] // 2 + size[1] // 3.5 * math.cos(roll_3))pygame.draw.circle(screen, GREEN, (pos_3_x, pos_3_y), 20, 0)roll_4 += 0.04pos_4_x = int(size[0] // 2 + size[1] // 4 * math.sin(roll_4))pos_4_y = int(size[1] // 2 + size[1] // 4 * math.cos(roll_4))pygame.draw.circle(screen, SandyBrown, (pos_4_x, pos_4_y), 20, 0)roll_5 += 0.05pos_5_x = int(size[0] // 2 + size[1] // 5 * math.sin(roll_5))pos_5_y = int(size[1] // 2 + size[1] // 5 * math.cos(roll_5))pygame.draw.circle(screen, PaleGodenrod, (pos_5_x, pos_5_y), 20, 0)roll_6 += 0.06pos_6_x = int(size[0] // 2 + size[1] // 2.5 * math.sin(roll_6))pos_6_y = int(size[1] // 2 + size[1] // 2.5 * math.cos(roll_6))pygame.draw.circle(screen, PaleVioletRed, (pos_6_x, pos_6_y), 20, 0)roll_7 += 0.07pos_7_x = int(size[0] // 2 + size[1] // 4.5 * math.sin(roll_7))pos_7_y = int(size[1] // 2 + size[1] // 4.5 * math.cos(roll_7))pygame.draw.circle(screen, Thistle, (pos_7_x, pos_7_y), 20, 0)roll_8 += 0.08pos_8_x = int(size[0] // 2 + size[1] // 5.5 * math.sin(roll_8))pos_8_y = int(size[1] // 2 + size[1] // 5.5 * math.cos(roll_8))pygame.draw.circle(screen, WHITE, (pos_8_x, pos_8_y), 20, 0)

最后，我们来看一下整体实现的动态效果：

到此，相信大家对"怎么使用Python实现太阳系的运转"有了更深的了解，不妨来实际操作一番吧！这里是网站，更多相关内容可以进入相关频道进行查询，关注我们，继续学习！