模式嗯

.vscode/settings.json

@@ -3,7 +3,8 @@
         "*.py": "python",
         "app.h": "c",
         "time.h": "c",
-        "math.h": "c"
+        "math.h": "c",
+        "color_utils.h": "c"
     },
     "C_Cpp.errorSquiggles": "enabled",
     "C_Cpp.default.includePath": [

include/shader.h

@@ -3,9 +3,15 @@
 
 #include "color_utils.h"
 
+typedef enum LightMode {
+    LIGHT_MODE_RAINBOW,
+    LIGHT_MODE_WHITE,
+} LightMode;
+
 typedef struct {
     int index;
     double time;
+    LightMode mode;
 } Status;
 
 void init_status(Status* status);

src/shader.c

@@ -3,6 +3,7 @@
 void init_status(Status* status) {
     status->index = 0;
     status->time = 0;
+    status->mode = LIGHT_MODE_WHITE;
 }
 
 Color shader(Status* status) {
@@ -10,5 +11,11 @@ Color shader(Status* status) {
         return hex_to_color(0xFFFFFF);
     }
 
-    return hsv_to_color(status->time * 120 + status->index * 6, 1, 1);
+    switch (status->mode) {
+        case LIGHT_MODE_RAINBOW:
+            return hsv_to_color(status->time * 120 + status->index * 6, 1, 1);
+
+        default:
+            return hex_to_color(0xFFFFFF);
+    }
 }