在 C++ 中,我如何编写一个 3 维数组? [英] In C++, how do I write a 3-dimensional array?
问题描述
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我正在构建一个四轴飞行器,并在它的四个臂上分别放置了一条可单独寻址的 RGB LED 灯条.每条带 6 个 LED.
I am building a quadcopter and am placing on each of it's four arms a strip of RGB LEDs which are individually addressable. There are 6 LEDs per strip.
此外,我希望如何切换灯光的顺序有六个步骤,因此条带上的所有六个灯光不必同时切换.
Further, there are six steps in a sequence to how I wish to toggle the lights so all six lights on the strip don't necessarily toggle at once.
在伪代码中,这是我要创建的内容:
In pseudo code, here is what I am trying to create:
someArray = A group of 4 LED strips {Strip 1: [
Step 1: [ LED 1: [R, G, B], . . ., LED 6: [R, G, B] ],
. . .,
Step 6: [ LED 1: [R, G, B], . . ., LED 6: [R, G, B] ],
],
. . .,
Strip 4: [
Step 1: [ LED 1: [R, G, B], . . ., LED 6: [R, G, B] ],
. . .,
Step 6: [ LED 1: [R, G, B], . . ., LED 6: [R, G, B] ],
]};
我正在使用 Arduino 来驱动灯,代码是用我不太熟悉的 C++ 编写的.
I am using an Arduino to drive the lights, and the code is in C++ with which I am not very familiar.
这是我迄今为止尝试过的代码,但是当我在 Arduino IDE 中编译时,我收到一个错误消息,提示Braces around scalar initializer for type 'int'".
Here is the code I have tried so far, but when I compile in the Arduino IDE, I get an error that says "Braces around scalar initializer for type 'int'".
int gpsHoldArr[4][6][6] = {
{
{{255,0,0}, {0,0,0}, {0,0,0}, {0,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {0,0,0}, {0,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {0,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}}
},
{
{{255,0,0}, {0,0,0}, {0,0,0}, {0,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {0,0,0}, {0,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {0,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}}
},
{
{{255,0,0}, {0,0,0}, {0,0,0}, {0,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {0,0,0}, {0,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {0,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}}
},
{
{{255,0,0}, {0,0,0}, {0,0,0}, {0,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {0,0,0}, {0,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {0,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}}
},
};
我在这里遗漏了什么?
预期用途如下:
//iterate each of the 6 sets of RGB values and assign them to the correct (sequential) LED
void toggleLights(int lights[]){
for(int i = 0; i <= 6; ++i)
{
set_color_led(i, lights[i][0], lights[i][1], lights[i][2]);
}
}
toggleLights(gpsHoldArr[1][0]);//Get the first step of the second arm.
提前致谢.
推荐答案
您编写了 4d 数组的初始化,因为 RGB 有 3 个分量.你可能想要做这样的事情:
You wrote the initialization for a 4d array as RGB has 3 components. You probably want to do something like this:
struct rgb {
int r, g, b;
};
rgb gpsHoldArr[4][6][6] = {
{
{{255,0,0}, {0,0,0}, {0,0,0}, {0,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {0,0,0}, {0,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {0,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}}
},
{
{{255,0,0}, {0,0,0}, {0,0,0}, {0,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {0,0,0}, {0,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {0,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}}
},
{
{{255,0,0}, {0,0,0}, {0,0,0}, {0,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {0,0,0}, {0,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {0,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}}
},
{
{{255,0,0}, {0,0,0}, {0,0,0}, {0,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {0,0,0}, {0,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {0,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {0,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {0,0,0}},
{{255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}, {255,0,0}}
},
};
或者,将您的声明更改为:
Or, change your declaration to this:
int gpsHoldArr[4][6][6][3]
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