extract colors to ptk_color.h and add HSV

include/ptk.h

@@ -1,6 +1,7 @@
 #ifndef PTK_PTK_H_
 #define PTK_PTK_H_
 
+#include <ptk_color.h>
 #include <ptk_list.h>
 #include <ptk_vec.h>
 

include/ptk_color.h

@@ -0,0 +1,60 @@
+#ifndef PTK_PTK_COLOR_H_
+#define PTK_PTK_COLOR_H_
+
+typedef union {
+    struct {
+        float r;
+        float g;
+        float b;
+    };
+    struct {
+        float red;
+        float green;
+        float blue;
+    };
+} PtkColor;
+
+typedef union {
+    struct {
+        float h;
+        float s;
+        float v;
+    };
+    struct {
+        float hue;
+        float saturation;
+        float value;
+    };
+} PtkHSV;
+
+typedef union {
+    struct {
+        float r;
+        float g;
+        float b;
+        float a;
+    };
+    struct {
+        float red;
+        float green;
+        float blue;
+        float alpha;
+    };
+} PtkColorA;
+
+typedef union {
+    struct {
+        float h;
+        float s;
+        float v;
+        float a;
+    };
+    struct {
+        float hue;
+        float saturation;
+        float value;
+        float alpha;
+    };
+} PtkHSVA;
+
+#endif // PTK_PTK_COLOR_H_

include/ptk_vec.h

@@ -25,19 +25,6 @@ typedef struct {
     float z;
 } PtkVec3;
 
-typedef union {
-    struct {
-        float r;
-        float g;
-        float b;
-    };
-    struct {
-        float red;
-        float green;
-        float blue;
-    };
-} PtkColor;
-
 typedef struct {
     float x;
     float y;
@@ -45,19 +32,4 @@ typedef struct {
     float w;
 } PtkVec4;
 
-typedef union {
-    struct {
-        float r;
-        float g;
-        float b;
-        float a;
-    };
-    struct {
-        float red;
-        float green;
-        float blue;
-        float alpha;
-    };
-} PtkColorA;
-
 #endif // PTK_PTK_VEC_H_