自定义颜色#

介绍 #

VEX AIM 编码机器人支持使用自定义颜色进行绘图、显示及其 LED 灯。您可以使用 RGB 值、十六进制代码、HSV 值或预定义常量来创建自定义颜色。自定义颜色包含创建和更新颜色对象的方法。以下是可用方法的列表：

Constructors – Create a new Color object.

Color(value) – Accepts a predefined constant, hex string (e.g. “#FFF700”), or hex integer (e.g. 0xFFF700).
Color(r, g, b) – Creates a color using red, green, and blue values (0–255).

Mutators – Update an existing Color object.

rgb – Updates a color using new RGB values.
hsv – Updates a color using hue (0–360), saturation, and brightness (0.0–1.0).
web – Updates a color using a web hex color string (e.g. “#32C8B6”).

创建自定义颜色 #

To use a custom color, you must first create a Color object using one of the following constructors:

Hexadecimal Integer #

使用六位十六进制整数创建颜色。

Usage:
Color(value)

范围	描述
`value`	A six-digit integer in hexadecimal format (e.g., `0xFFF700` for yellow).

# Construct a yellow Color "yellow" using a
# hexadecimal value
yellow = Color(0xFFF700)

robot.screen.set_pen_color(yellow)
robot.screen.print("My Yellow")

RGB #

使用单独的红色、绿色和蓝色值创建颜色。

Usage:
Color(r, g, b)

范围	描述
`r`	表示红色成分的 0 至 255 之间的整数。
`g`	表示绿色成分的 0 至 255 之间的整数。
`b`	表示蓝色成分的 0 至 255 之间的整数。

# Construct a yellow Color "yellow" using
# RGB values
yellow = Color(255, 247, 0)

robot.screen.set_pen_color(yellow)
robot.screen.print("My Yellow")

Web Color #

使用 Web 颜色字符串（十六进制代码）创建颜色。

Usage:
Color(value)

范围	描述
`value`	A web color as a string (hex code) (e.g., `“#FFF700”`).

# Construct a yellow Color "yellow" using a
# web string
yellow = Color("#FFF700")

robot.screen.set_pen_color(yellow)
robot.screen.print("My Yellow")

Predefined Color #

Creates a color using a predefined Color constant.

Usage:
Color(value)

范围	描述
`value`	A built-in color constant: `BLACK`, `BLUE`, `CYAN`, `GREEN`, `ORANGE`, `PURPLE`, `RED`, `TRANSPARENT`, `WHITE`, `YELLOW`.

# Construct a yellow Color "yellow" using a
# predefined Color constant
yellow = Color(YELLOW)

robot.screen.set_pen_color(yellow)
robot.screen.print("My Yellow")

修改器 #

These methods allow you to modify a Color object after it has been created during a project.

rgb #

rgb updates the color of an existing Color object using RGB values.

Usage:
rgb(r, g, b)

参数	描述
`r`	0 至 255 之间的整数，表示颜色的红色成分。
`g`	0 至 255 之间的整数，表示颜色的绿色成分。
`b`	0 至 255 之间的整数，表示颜色的蓝色成分。

# Create a custom teal color and set it as the pen color
robot_color = Color(50, 200, 180)
robot.screen.set_pen_color(robot_color)

# Draw a rectangle with the teal outline
robot.screen.draw_rectangle(30, 70, 80, 50)

# Draw another rectangle with a magenta outline
robot_color.rgb(170, 40, 150)
robot.screen.set_pen_color(robot_color)
robot.screen.draw_rectangle(130, 70, 80, 50)

hsv #

hsv updates the color of an existing Color object using HSV values.

Note: hsv can only be used to change a Color object that has already been created. It cannot be used to create a new Color Object.

Usage:
hsv(h, s, v)

参数	描述
`h`	表示颜色色调的 0 至 360 之间的整数。
`s`	0.0 到 1.0 之间的浮点数，表示颜色的饱和度。
`v`	0.0 到 1.0 之间的浮点数，表示颜色的亮度。

# Create a custom teal color using RGB (HSV can't be used)
robot_color = Color(50, 200, 180)
robot.screen.set_pen_color(robot_color)

# Draw a rectangle with the teal outline
robot.screen.draw_rectangle(30, 70, 80, 50)

# Draw another rectangle with a magenta outline
robot_color.hsv(300, 0.75, 0.78)
robot.screen.set_pen_color(robot_color)
robot.screen.draw_rectangle(130, 70, 80, 50)

web #

web updates the color of an existing Color object using a web color (hex code).

Usage:
web(value)

参数	描述
`value`	用于更新现有颜色实例的字符串形式的 Web 颜色（十六进制代码）。

# Create a custom teal color and set it as the pen color
robot_color = Color("#32C8B6")
robot.screen.set_pen_color(robot_color)

# Draw a rectangle with the teal outline
robot.screen.draw_rectangle(30, 70, 80, 50)

# Draw another rectangle with the new magenta outline
robot_color.web("#AA2896")
robot.screen.set_pen_color(robot_color)
robot.screen.draw_rectangle(130, 70, 80, 50)