我试图用Neopixels获得我的Arduino代码,Neopixels具有5310字节的内存较小,以便我可以将更多的内容输入程序中。
目前,我正在尝试卸下浮子/减小下面的代码段的大小:
void gradient(Color c1, Color c2, float time) {
for (float i = 0; i < time; i += 0.001) {
Color result(0, 0, 0);
result.Red = c1.Red * (1 - (i / time)) + c2.Red * (i / time);
result.Green = c1.Green * (1 - (i / time)) + c2.Green * (i / time);
result.Blue = c1.Blue * (1 - (i / time)) + c2.Blue * (i / time);
for (uint8_t x = 0; x < 20; x++)pixels.setPixelColor(x, result.Red, result.Green, result.Blue);
pixels.show();
delay(1);
}
}
我设法将其减少了30个字节至:
void gradient(Color c1, Color c2, float time) {
float stepsize = 0.01; // Stepsize in seconds
float lambda;
int maxiter = (int) (time/ stepsize);
Color result(0, 0, 0);
for (int i = 0; i <= maxiter; i++) {
lambda = (float) i / maxiter;
result.Red = c1.Red * (1 - lambda) + c2.Red * (lambda);
result.Green = c1.Green * (1 - lambda) + c2.Green * (lambda);
result.Blue = c1.Blue * (1 - lambda) + c2.Blue * (lambda);
for (uint8_t x = 0; x < 20; x++)pixels.setPixelColor(x, result.Red, result.Green, result.Blue);
pixels.show();
delay(stepsize * 1000); // delay in milliseconds
}
}
,但仍在努力使其更小。
对于那些想知道颜色对象的人只是一个具有3个INT的对象,称为红色,绿色和蓝色。此代码的示例用法是:
gradient(Color(255, 0, 0), Color(0, 255, 0), 2);
这将是从红色到绿色的梯度2秒。
预先感谢!
如果您可以从所有代码中拉出" delay()",它似乎避免了包含100个字节大小库吗?idk tbh,但这是我建议的修改,在我的测试中,它节省了100个字节:
void gradient(Color c1, Color c2, float time) {
float stepsize = 0.01; // Stepsize in seconds
float lambda;
int maxiter = (int) (time/ stepsize);
Color result(0, 0, 0);
for (int i = 0; i <= maxiter; i++) {
lambda = (float) i / maxiter;
result.Red = c1.Red * (1 - lambda) + c2.Red * (lambda);
result.Green = c1.Green * (1 - lambda) + c2.Green * (lambda);
result.Blue = c1.Blue * (1 - lambda) + c2.Blue * (lambda);
for (uint8_t x = 0; x < 20; x++)pixels.setPixelColor(x, result.Red, result.Green, result.Blue);
pixels.show();
//delay(stepsize * 1000); // delay in milliseconds
long lastTime=millis();
long delayTime = stepsize * 1000;
while(millis()-lastTime<delayTime){}
}
}
- 首先,您的颜色对象应采取3个无符号字符(0-255),没有理由将INT放入其中。(Arduino中的字节类型)
- 第二,我不确定您是如何实施时间的,但通常在Arduino中,您正在以毫秒为单位。此外,我猜没有看到您的其他实现,我猜是时间的一部分,并且根据您的延迟,我猜想您可以将时间发送为简短(如有必要,)(这将最多可持续32秒,)
void gradient(Color c1, Color c2, short time) {
short maxiter = (short) (time/ 10);
Color result(0, 0, 0);
for (int i = 0; i <= maxiter; i++) {
result.Red = (c1.Red * (maxiter-i) + c2.Red * i)/maxiter;
result.Green = (c1.Green* (maxiter-i) + c2.Green* i)/maxiter;
result.Blue = (c1.Blue* (maxiter-i) + c2.Blue* i)/maxiter;
for (uint8_t x = 0; x < 20; x++)pixels.setPixelColor(x, result.Red, result.Green, result.Blue);
pixels.show();
delay(10); // delay in milliseconds
}
}