Drawing

Introduction

The VR Robot uses a pen to draw on a playground as it moves. The robot’s pen can change width, color, and fill enclosed area.

Below is a list of all available blocks:

• move pen – Raise or lower the robot’s pen.

• set pen to width – Set the width of the robot’s pen.

• set pen to color – Set the color of the robot’s pen from a list.

• set pen color – Set the color of the robot’s pen with red, green, and blue values.

• fill area – Fill a playground or an enclosed area with a specified color.

move pen

The move pen block raises or lowers the robot’s pen, allowing it to start or stop drawing.

移动笔 [向下 v]

Parameters	Description
state	The state of the robot’s pen: down up

Example

当开始 :: hat events
[Draw a square.]
移动笔 [向下 v]
重复 (4)
驱动 [向前 v] [150] [毫米 v] ▶
[右 v] 转 [90] 度 ▶

set pen to width

The set pen to width block sets how thick the drawn lines from the pen appear.

设定笔宽为 [thin v]

Parameters	Description
width	The width of the robot’s pen: extra thin thin (default) medium wide extra wide

Example

当开始 :: hat events
[Draw an extra wide square.]
设定笔宽为 [extra wide v]
移动笔 [向下 v]
重复 (4)
驱动 [向前 v] [150] [毫米 v] ▶
[右 v] 转 [90] 度 ▶

set pen to color

The set pen to color block sets the color of the pen from a preset list.

设定笔颜色为 [black v]

Parameters	Description
color	The color of the robot’s pen: black red green blue

Example

当开始 :: hat events
[Draw a blue square.]
设定笔颜色为 [蓝色 v]
移动笔 [向下 v]
重复 (4)
驱动 [向前 v] [150] [毫米 v] ▶
[右 v] 转 [90] 度 ▶

set pen color

The set pen color block sets the color of the pen by manually providing red, green, blue, and opacity values. Adjust the different values by using the sliders that appear when clicking the color in the set pen color block.

设定笔颜色为 (::#000000)

Parameters	Description
red	The red value of the color from 0 to 255.
green	The green value of the color from 0 to 255.
blue	The blue value of the color from 0 to 255.
opacity	How transparent the color is as a percentage from 0 to 100.

Example

当开始 :: hat events
[Draw a pink square.]
设定笔颜色为 (::#D900D9)
移动笔 [向下 v]
重复 (4)
驱动 [向前 v] [150] [毫米 v] ▶
[右 v] 转 [90] 度 ▶

fill area

The fill area block fills a playground or enclosed area with a specified color by manually providing red, green, blue, and opacity values. Adjust the different values by using the sliders that appear when clicking the color in the fill area block.

填充区域用颜色 (::#000000)

Parameters	Description
red	The red value of the color from 0 to 255.
green	The green value of the color from 0 to 255.
blue	The blue value of the color from 0 to 255.
opacity	How transparent the color is as a percentage from 0 to 100.

Example

当开始 :: hat events
[Fill the playground with pink.]
移动笔 [向下 v]
填充区域用颜色 (::#D900D9)