void vtkLookupTable2D::RgbToHsv(unsigned char r, unsigned char g, unsigned char b, double *h, double *s, double *v){
double dr, dg, db;
dr = ((double) ((int) r)) / 255.0;
dg = ((double) ((int) g)) / 255.0;
db = ((double) ((int) b)) / 255.0;
RgbToHsv(dr, dg, db, h, s, v);
}
void vtkLookupTable2D::RgbToHsv(unsigned char r, unsigned char g, unsigned char b, unsigned char *h, unsigned char *s, unsigned char *v){
double dr, dg, db, dh, ds, dv;
int ir, ig, ib, ih, is, iv;
dr = ((double) ((int) r)) / 255.0;
dg = ((double) ((int) g)) / 255.0;
db = ((double) ((int) b)) / 255.0;
RgbToHsv(dr, dg, db, &dh, &ds, &dv);
ih = (int) (dh * 255.0);
is = (int) (ds * 255.0);
iv = (int) (dv * 255.0);
*h = (unsigned char) ih;
*s = (unsigned char) is;
*v = (unsigned char) iv;
}
COLORREF ChangeColorBrightness(COLORREF color, float modifier) {
float r = static_cast<float>(GetRValue(color)) / 255.0f;
float g = static_cast<float>(GetGValue(color)) / 255.0f;
float b = static_cast<float>(GetBValue(color)) / 255.0f;
float h, s, v;
RgbToHsv(r, g, b, h, s, v);
v += modifier;
if (v < 0.0f) v = 0.0f;
if (v > 1.0f) v = 1.0f;
HsvToRgb(r, g, b, h, s, v);
return RGB(static_cast<BYTE>(r * 255),
static_cast<BYTE>(g * 255),
static_cast<BYTE>(b * 255));
}
/**
* A smallprogram to read out colorvalues of pixels on the screen.
* Left-Click: get color values.
* Right-Click: exit.
*
* @autor: Marcel Schneider; mostly based on Stackoverflow snippets [1] and [2]
* [1]: http://stackoverflow.com/questions/16122196/getting-mouseclick-coordinates-with-xlib
* [2]: http://stackoverflow.com/questions/17518610/how-to-get-a-screen-pixels-color-in-x11
*/
int main() {
int x = -1, y = -1;
XEvent event;
int button = 0;
Display *display = XOpenDisplay(NULL);
if (display == NULL) {
fprintf(stderr, "Cannot connect to X server!\n");
exit(EXIT_FAILURE);
}
Window root = XDefaultRootWindow(display);
XGrabPointer(display, root, False, ButtonReleaseMask, GrabModeAsync,
GrabModeAsync, None, None, CurrentTime);
XSelectInput(display, root, ButtonReleaseMask);
printf("Right-click to exit.\n");
while (button != Button3) {
while (1) {
XNextEvent(display, &event);
switch (event.type) {
case ButtonRelease:
switch (event.xbutton.button) {
case Button1:
x = event.xbutton.x;
y = event.xbutton.y;
button = Button1;
break;
case Button3:
x = event.xbutton.x;
y = event.xbutton.y;
button = Button3;
break;
default:
break;
}
break;
default:
break;
}
if (x >= 0 && y >= 0)
break;
}
XColor c;
XImage *image;
image = XGetImage(display, RootWindow(display, DefaultScreen (display)),
x, y, 1, 1, AllPlanes, XYPixmap);
c.pixel = XGetPixel(image, 0, 0);
XFree(image);
XQueryColor(display, DefaultColormap(display, DefaultScreen (display)),
&c);
c.red /= 256;
c.green /= 256;
c.blue /= 256;
RgbColor rgb;
rgb.r = c.red;
rgb.g = c.green;
rgb.b = c.blue;
HsvColor hsv = RgbToHsv(rgb);
printf("x,y: %d,%d\n\trgb(%3d,%3d,%3d)\n", x, y, c.red, c.green,
c.blue);
printf("\thsv(%3d,%3d,%3d)\n", hsv.h, hsv.s, hsv.v);
}
XCloseDisplay(display);
return 0;
}
void checkIR(IRMP_DATA *irmp_data) {
if (irmp_get_data(irmp_data)) {
if (pwm_status == POWER_OFF && irmp_data->command != 1)
return;
if (!(irmp_data->flags & IRMP_FLAG_REPETITION)) {
switch (irmp_data->command) {
case (1):
if (pwm_status == POWER_ON) {
pwm_disable_all();
off(DEBUGLED);
} else {
pwm_enable_all();
on(DEBUGLED);
}
action = NONE;
break;
case (30):
change_white(1);
break;
case (36):
change_white(-1);
break;
case (4):
change_white(-255);
break;
case (14):
rgb_color.r=0; rgb_color.g=0; rgb_color.b=0;
hsv_color = RgbToHsv(&rgb_color);
update_color();
break;
case (40):
change_hue(5.);
action = NONE;
break;
case (41):
change_hue(-5.);
action = NONE;
break;
case (44):
change_saturation(0.1);
action = NONE;
break;
case (45):
change_saturation(-0.1);
action = NONE;
break;
case (9):
change_value(0.1);
action = NONE;
break;
case (5):
change_value(-0.1);
action = NONE;
break;
case (7):
duration += 10;
break;
case (8):
duration -= 10;
break;
case (16):
colors_gen(RED, &rgb_color, &hsv_color);
update_color();
action = NONE;
break;
case (17):
colors_gen(GREEN, &rgb_color, &hsv_color);
update_color();
action = NONE;
break;
case (18):
colors_gen(BLUE, &rgb_color, &hsv_color);
update_color();
action = NONE;
break;
case (19):
colors_gen(CYAN, &rgb_color, &hsv_color);
update_color();
action = NONE;
break;
case (20):
colors_gen(MAGENTA, &rgb_color, &hsv_color);
update_color();
action = NONE;
break;
case (21):
colors_gen(YELLOW, &rgb_color, &hsv_color);
update_color();
action = NONE;
break;
case (22):
colors_gen(WHITE, &rgb_color, &hsv_color);
update_color();
action = NONE;
break;
case (23):
colors_gen(BROWN, &rgb_color, &hsv_color);
update_color();
action = NONE;
break;
case (24):
colors_gen(RANDOM, &rgb_color, &hsv_color);
update_color();
action = NONE;
break;
case (15):
action = (action == HUE_FADE) ? NONE : HUE_FADE;
break;
default:
break;
}
} else {
switch (irmp_data->command) { // if you press the button longer
case (30):
change_white(5);
break;
case (36):
change_white(-5);
break;
case (40):
change_hue(0.5);
break;
case (41):
change_hue(-0.5);
break;
case (44):
change_saturation(0.01);
break;
case (45):
change_saturation(-0.01);
break;
case (9):
change_value(0.01);
break;
case (5):
change_value(-0.01);
break;
case (7):
duration += 5;
break;
case (8):
duration -= 5;
break;
default:
break;
}
}
} //end remote switch
switch (action) {
case (HUE_FADE):
if (duration <= 0)
duration = 0;
if ((millis - last_millis) > duration) {
change_hue(1.);
last_millis = millis;
}
break;
default:
break;
} // action switch
}
