From e6ec672107e35acea784f03839af5d0ff802d7bd Mon Sep 17 00:00:00 2001
From: falkTX <falktx@falktx.com>
Date: Wed, 29 Mar 2023 15:43:28 +0200
Subject: [PATCH] Add Color::invert()

Signed-off-by: falkTX <falktx@falktx.com>
---
 dgl/Color.hpp     | 5 +++++
 dgl/src/Color.cpp | 9 +++++++++
 2 files changed, 14 insertions(+)

diff --git a/dgl/Color.hpp b/dgl/Color.hpp
index 5ea28fed..f1b7bb37 100644
--- a/dgl/Color.hpp
+++ b/dgl/Color.hpp
@@ -94,6 +94,11 @@ struct Color {
     */
     Color plus(float value) const noexcept;
 
+   /**
+      Create a new color based on this one but colors inverted.
+    */
+    Color invert() const noexcept;
+
    /**
       Create a color specified by hue, saturation and lightness.
       Values must in [0..1] range.
diff --git a/dgl/src/Color.cpp b/dgl/src/Color.cpp
index 4c8714ff..df779687 100644
--- a/dgl/src/Color.cpp
+++ b/dgl/src/Color.cpp
@@ -163,6 +163,15 @@ Color Color::plus(const float value) const noexcept
     return color;
 }
 
+Color Color::invert() const noexcept
+{
+    Color color(*this);
+    color.red = 1.f - color.red;
+    color.green = 1.f - color.green;
+    color.blue = 1.f - color.blue;
+    return color;
+}
+
 Color Color::fromHSL(float hue, float saturation, float lightness, float alpha)
 {
     float m1, m2;