*粒子系统

1 files changed, 21 insertions, 0 deletions

diff --git a/src/libjin/Graphics/je_color.h b/src/libjin/Graphics/je_color.h
index 8fe7691..10d2818 100644
--- a/src/libjin/Graphics/je_color.h
+++ b/src/libjin/Graphics/je_color.h
@@ -6,6 +6,8 @@
 #include "../core/je_configuration.h"
 #if defined(jin_graphics)
 
+#include "../math/je_math.h"
+
 #include "../common/je_types.h"
 #include "../utils/je_endian.h"
 
@@ -28,6 +30,25 @@ namespace JinEngine
 			static const Color MAGENTA;
 			static const Color YELLOW;
 
+            ///
+            /// Get lerp color with given factor.
+            ///
+            /// @param start Start color. 
+            /// @param end End color. 
+            /// @param t Factor of interplation.
+            /// @return Color after interplation.
+            ///
+            static Color lerp(Color start, Color end, float t)
+            {
+                t = Math::clamp<float>(t, 0, 1);
+                Color c;
+                c.r = Math::lerp(start.r, end.r, t);
+                c.g = Math::lerp(start.g, end.g, t);
+                c.b = Math::lerp(start.b, end.b, t);
+                c.a = Math::lerp(start.a, end.a, t);
+                return c;
+            }
+
             /// 
             /// 
             ///