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[stripes] Rainbow colors

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This commit is contained in:
Jean-André Santoni 2018-04-08 20:47:49 +07:00
parent 2ef3824554
commit cef8477215
1 changed files with 46 additions and 9 deletions
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55
menu/drivers/stripes.c
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@ -325,6 +325,42 @@ static float stripes_item_color[] = {
1, 1, 1, 1
};
static float HueToRGB(float v1, float v2, float vH)
{
if (vH < 0)
vH += 1;
if (vH > 1)
vH -= 1;
if ((6 * vH) < 1)
return (v1 + (v2 - v1) * 6 * vH);
if ((2 * vH) < 1)
return v2;
if ((3 * vH) < 2)
return (v1 + (v2 - v1) * ((2.0f / 3) - vH) * 6);
return v1;
}
static void HSLToRGB(float H, float S, float L, float *rgb) {
if (S == 0)
rgb[0] = rgb[1] = rgb[2] = L;
else
{
float v1, v2;
v2 = (L < 0.5) ? (L * (1 + S)) : ((L + S) - (L * S));
v1 = 2 * L - v2;
rgb[0] = HueToRGB(v1, v2, H + (1.0f / 3));
rgb[1] = HueToRGB(v1, v2, H);
rgb[2] = HueToRGB(v1, v2, H - (1.0f / 3));
}
}
static void stripes_calculate_visible_range(const stripes_handle_t *stripes,
unsigned height, size_t list_size, unsigned current,
unsigned *first, unsigned *last);
@ -2858,13 +2894,6 @@ static void stripes_frame(void *data, video_frame_info_t *video_info)
menu_display_rotate_z(&rotate_draw, video_info);
menu_display_blend_begin(video_info);
float mycolor[16]= {
0.50, 1.00, 1.00, 1.00,
0.00, 0.50, 1.00, 1.00,
0.50, 1.00, 1.00, 1.00,
0.00, 0.50, 1.00, 1.00,
};
/* Horizontal stripes */
for (i = 0; i <= stripes_list_get_size(stripes, MENU_LIST_HORIZONTAL)
+ stripes->system_tab_end; i++)
@ -2874,6 +2903,15 @@ static void stripes_frame(void *data, video_frame_info_t *video_info)
if (!node)
continue;
float rgb[3];
HSLToRGB(0.05*(float)i,0.5,0.5, &rgb[0]) ;
float color[16] = {
rgb[0], rgb[1], rgb[2], 1,
rgb[0], rgb[1], rgb[2], 1,
rgb[0], rgb[1], rgb[2], 1,
rgb[0], rgb[1], rgb[2], 1,
};
menu_display_draw_polygon(
video_info,
stripes->categories_x_pos + stack_width,
@ -2884,9 +2922,8 @@ static void stripes_frame(void *data, video_frame_info_t *video_info)
video_info->height,
stripes->categories_x_pos + stack_width + stripes->categories_angle + node->width,
video_info->height,
video_info->width, video_info->height,
&mycolor[0]);
&color[0]);
menu_display_blend_begin(video_info);