在 Python3 中使用 Arcade 绘制抛物线

Arcade 是一个用于开发二维游戏的Python库。 Arcade 需要支持 OpenGL 3.3+。在街机中，基本绘图不需要了解如何定义函数或类或如何进行循环，只需我们有用于绘制图元的内置函数。

用于绘制抛物线的 Arcade 内置函数：-

1. arcade.draw_parabola_outline( )：该函数绘制抛物线的轮廓。

Syntax: arcade.draw_parabola_outline(start_x , start_y, end_x , height , color, border_width, tilt_angle)

Parameters:

• start_x : The starting x position of the parabola
• start_y : The starting y position of the parabola
• end_x : The ending x position of the parabola
• height : The height of the parabola
• color : The color of the parabola
• border_width: The width of the parabola
• tilt_angle : The angle of the tilt of the parabola.

例子：

Python3

# import module
import arcade
  
# Open the window. Set the window title and dimensions (width and height)
arcade.open_window(600, 600, "Draw  a parabola  for GfG ")
  
# set background
arcade.set_background_color(arcade.color.WHITE)
  
# Start the render process.
arcade.start_render()
  
# function to draw a parabola
arcade.draw_parabola_outline(50, 80, 100, 120, arcade.color.GREEN, 10, 0)
  
# finish drawing
arcade.finish_render()

输出：

2. arcade.draw_parabola_filled( )：该函数用于绘制彩色场抛物线。

Syntax: arcade.draw_parabola_outline(start_x , start_y, end_x , height , color, tilt_angle)

Parameters:

• start_x : The starting x position of the parabola
• start_y : The starting y position of the parabola
• end_x :The ending x position of the parabola
• height : The height of the parabola
• color : The color of the parabola
• tilt_angle : The angle of the tilt of the parabola.

例子 ：

蟒蛇3

# import module
import arcade
  
# Open the window. Set the window title and dimensions (width and height)
arcade.open_window(600, 600, "Draw  a parabola  for GfG ")
  
# set background
arcade.set_background_color(arcade.color.WHITE)
  
# Start the render process.
arcade.start_render()
  
# function to draw a parabola
arcade.draw_parabola_filled(25, 80, 100, 110, arcade.color.GREEN ,0)
  
# finish drawing
arcade.finish_render()
  
# to display everything
arcade.run()

输出：

示例：使用一系列抛物线绘制彩虹的程序

蟒蛇3

# import module
import arcade
  
# Open the window. Set the window title and dimensions (width and height)
arcade.open_window(600, 600, "Draw  a parabola  for GfG ")
  
#set background
arcade.set_background_color(arcade.color.WHITE)
  
# Start the render process.
arcade.start_render()
  
# function to draw a rainbow parabola
arcade.draw_parabola_filled(25, 80, 500, 300, arcade.color.RED ,0)
arcade.draw_parabola_filled(50, 80, 470, 280, arcade.color.ORANGE ,0)
arcade.draw_parabola_filled(75, 80, 440, 260, arcade.color.YELLOW ,0)
arcade.draw_parabola_filled(100, 80, 410, 240, arcade.color.GREEN ,0)
arcade.draw_parabola_filled(125, 80, 380, 220, arcade.color.SKY_BLUE ,0)
arcade.draw_parabola_filled(150, 80, 350, 200, arcade.color.VIOLET ,0)
arcade.draw_parabola_filled(175, 80, 325, 180, arcade.color.INDIGO ,0)
  
# finish drawing
arcade.finish_render()
  
# to display everything
arcade.run()

输出：