首先声明从学英语以来，只有初中得过一次72分，其他全没及格，闲来没事多个手，仅供参考
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#include <Colorduino.h>
typedef struct
{
unsigned char r;
unsigned char g;
unsigned char b;
} ColorRGB;
//a color with 3 components: h, s and v【hsv 三分色表示】
typedef struct
{
unsigned char h;
unsigned char s;
unsigned char v;
} ColorHSV;
unsigned char plasma[ColorduinoScreenWidth][ColorduinoScreenHeight];
long paletteShift;
//Converts an HSV color to RGB color【将HSV格式转换为RGB】
void HSVtoRGB(void *vRGB, void *vHSV)
{
float r, g, b, h, s, v; //this function works with floats between 0 and 1
float f, p, q, t;
int i;
ColorRGB *colorRGB=(ColorRGB *)vRGB;
ColorHSV *colorHSV=(ColorHSV *)vHSV;
h = (float)(colorHSV->h / 256.0);
s = (float)(colorHSV->s / 256.0);
v = (float)(colorHSV->v / 256.0);
//if saturation is 0, the color is a shade of grey 【如果色饱和度为0的话色彩为灰度】
if(s == 0.0) {
b = v;
g = b;
r = g;
}
//if saturation > 0, more complex calculations are needed 【如果色饱和度大于0的话那就需要更复杂的计算】
else
{
h *= 6.0; //to bring hue to a number between 0 and 6, better for the calculations【为了方便计算，色调定义成0~6】
i = (int)(floor(h)); //e.g. 2.7 becomes 2 and 3.01 becomes 3 or 4.9999 becomes 4【举例2.7变为2,3.01变为3~~】
f = h - i;//the fractional part of h【h的小数部分】
p = (float)(v * (1.0 - s));
q = (float)(v * (1.0 - (s * f)));
t = (float)(v * (1.0 - (s * (1.0 - f))));
switch(i)
{
case 0: r=v; g=t; b=p; break;
case 1: r=q; g=v; b=p; break;
case 2: r=p; g=v; b=t; break;
case 3: r=p; g=q; b=v; break;
case 4: r=t; g=p; b=v; break;
case 5: r=v; g=p; b=q; break;
default: r = g = b = 0; break;
}
}
colorRGB->r = (int)(r * 255.0);
colorRGB->g = (int)(g * 255.0);
colorRGB->b = (int)(b * 255.0);
}
float
dist(float a, float b, float c, float d)
{
return sqrt((c-a)*(c-a)+(d-b)*(d-b));
}
void
plasma_morph()
{
unsigned char x,y;
float value;
ColorRGB colorRGB;
ColorHSV colorHSV;
for(y = 0; y < ColorduinoScreenHeight; y++)
for(x = 0; x < ColorduinoScreenWidth; x++) {
{
value = sin(dist(x + paletteShift, y, 128.0, 128.0) / 8.0)
+ sin(dist(x, y, 64.0, 64.0) / 8.0)
+ sin(dist(x, y + paletteShift / 7, 192.0, 64) / 7.0)
+ sin(dist(x, y, 192.0, 100.0) / 8.0);
colorHSV.h=(unsigned char)((value) * 128)&0xff;
colorHSV.s=255;
colorHSV.v=255;
HSVtoRGB(&colorRGB, &colorHSV);
Colorduino.SetPixel(x, y, colorRGB.r, colorRGB.g, colorRGB.b);
}
}
paletteShift++;
Colorduino.FlipPage(); // swap screen buffers to show it【置换显示缓冲以显示】
}
/********************************************************
Name: ColorFill
Function: Fill the frame with a color【填充色彩框架（样本）】
Parameter:R: the value of RED. Range:RED 0~255【红】
G: the value of GREEN. Range:RED 0~255【绿】
B: the value of BLUE. Range:RED 0~255【蓝】
********************************************************/
void ColorFill(unsigned char R,unsigned char G,unsigned char B)
{
PixelRGB *p = Colorduino.GetPixel(0,0);
for (unsigned char y=0;y<ColorduinoScreenWidth;y++) {
for(unsigned char x=0;x<ColorduinoScreenHeight;x++) {
p->r = R;
p->g = G;
p->b = B;
p++;
}
}
Colorduino.FlipPage();
}
void setup()
{
Colorduino.Init(); // 初始化
// compensate for relative intensity differences in R/G/B brightness【补偿RGB亮度的相对强度】
// array of 6-bit base values for RGB (0~63)【RGB 6位基值数组】
// whiteBalVal[0]=red【红】
// whiteBalVal[1]=green【绿】
// whiteBalVal[2]=blue【蓝】
unsigned char whiteBalVal[3] = {36,63,63}; // for LEDSEE 6x6cm round matrix【LEDSEE6x6点阵设定】
Colorduino.SetWhiteBal(whiteBalVal);
// start with morphing plasma, but allow going to color cycling if desired.【以离子变换方式开始，但是如果必要的话也允许色彩循环】
paletteShift=128000;
unsigned char bcolor;
//generate the plasma once【生成一次】
for(unsigned char y = 0; y < ColorduinoScreenHeight; y++)
for(unsigned char x = 0; x < ColorduinoScreenWidth; x++)
{
//the plasma buffer is a sum of sines
bcolor = (unsigned char)
(
128.0 + (128.0 * sin(x*8.0 / 16.0))
+ 128.0 + (128.0 * sin(y*8.0 / 16.0))
) / 2;
plasma[x][y] = bcolor;
}
// to adjust white balance you can uncomment this line【想调整白平衡的话你可以取消此行的注释标记，并且将loop()中的plasma_morph() 注释掉，然后测试白平衡】
// and comment out the plasma_morph() in loop()
// and then experiment with whiteBalVal above
// ColorFill(255,255,255);
}
void loop()
{
plasma_morph();
} |
发表于 2012-12-20 13:12:27
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