wxColor DrawingUtils::DarkColour(const wxColour& color, float percent)
{
if(percent == 0) {
return color;
}
float h, s, l, r, g, b;
RGB_2_HSL(color.Red(), color.Green(), color.Blue(), &h, &s, &l);
// reduce the Lum value
l -= (float)((percent * 5.0)/100.0);
if (l < 0) l = 0.0;
HSL_2_RGB(h, s, l, &r, &g, &b);
return wxColour((unsigned char)r, (unsigned char)g, (unsigned char)b);
}
static inline void false_color(float val, dt_dev_pixelpipe_display_mask_t channel, float *out)
{
float in[3];
switch((channel & DT_DEV_PIXELPIPE_DISPLAY_ANY) & ~DT_DEV_PIXELPIPE_DISPLAY_OUTPUT)
{
case DT_DEV_PIXELPIPE_DISPLAY_L:
in[0] = val * 100.0f;
in[1] = 0.0f;
in[2] = 0.0f;
Lab_2_RGB(in, out);
break;
case DT_DEV_PIXELPIPE_DISPLAY_a:
in[0] = 80.0f;
in[1] = val * 256.0f - 128.0f;
in[2] = 0.0f;
Lab_2_RGB(in, out);
break;
case DT_DEV_PIXELPIPE_DISPLAY_b:
in[0] = 80.0f;
in[1] = 0.0f;
in[2] = val * 256.0f - 128.0f;
Lab_2_RGB(in, out);
break;
case DT_DEV_PIXELPIPE_DISPLAY_R:
out[0] = val;
out[1] = out[2] = 0.0f;
break;
case DT_DEV_PIXELPIPE_DISPLAY_G:
out[1] = val;
out[0] = out[2] = 0.0f;
break;
case DT_DEV_PIXELPIPE_DISPLAY_B:
out[2] = val;
out[0] = out[1] = 0.0f;
break;
case DT_DEV_PIXELPIPE_DISPLAY_LCH_C:
in[0] = 80.0f;
in[1] = val * 128.0f * sqrtf(2.0f);
in[2] = 0.9111f;
LCH_2_RGB(in, out);
break;
case DT_DEV_PIXELPIPE_DISPLAY_LCH_h:
in[0] = 50.0f;
in[1] = 0.25f * 128.0f * sqrtf(2.0f);
in[2] = val;
LCH_2_RGB(in, out);
break;
case DT_DEV_PIXELPIPE_DISPLAY_HSL_H:
in[0] = val;
in[1] = 1.0f;
in[2] = 0.5f;
HSL_2_RGB(in, out);
break;
case DT_DEV_PIXELPIPE_DISPLAY_HSL_S:
in[0] = 0.8333f;
in[1] = val;
in[2] = 0.5f;
HSL_2_RGB(in, out);
break;
case DT_DEV_PIXELPIPE_DISPLAY_HSL_l:
in[0] = 0.0f;
in[1] = 0.0f;
in[2] = val;
HSL_2_RGB(in, out);
break;
case DT_DEV_PIXELPIPE_DISPLAY_GRAY:
default:
out[0] = out[1] = out[2] = val;
break;
}
}