1 files changed, 98 insertions, 0 deletions
diff --git a/src/graphics/core/color.h b/src/graphics/core/color.h
new file mode 100644
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+++ b/src/graphics/core/color.h
@@ -0,0 +1,98 @@
+// * This file is part of the COLOBOT source code
+// * Copyright (C) 2012, Polish Portal of Colobot (PPC)
+// *
+// * This program is free software: you can redistribute it and/or modify
+// * it under the terms of the GNU General Public License as published by
+// * the Free Software Foundation, either version 3 of the License, or
+// * (at your option) any later version.
+// *
+// * This program is distributed in the hope that it will be useful,
+// * but WITHOUT ANY WARRANTY; without even the implied warranty of
+// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// * GNU General Public License for more details.
+// *
+// * You should have received a copy of the GNU General Public License
+// * along with this program. If not, see  http://www.gnu.org/licenses/.
+
+// color.h
+
+#pragma once
+
+
+#include <sstream>
+
+
+namespace Gfx {
+
+/**
+  \struct Color
+  \brief RGBA color */
+struct Color
+{
+    //! Red, green, blue and alpha components
+    float r, g, b, a;
+
+    //! Constructor; default values are (0,0,0,0) = black
+    Color(float aR = 0.0f, float aG = 0.0f, float aB = 0.0f, float aA = 0.0f)
+     : r(aR), g(aG), b(aB), a(aA) {}
+
+    inline Gfx::Color Inverse() const
+    {
+        return Gfx::Color(1.0f - r, 1.0f - g, 1.0f - b, 1.0f - a);
+    }
+
+    //! Returns the struct cast to \c float* array; use with care!
+    inline float* Array()
+    {
+        return (float*)this;
+    }
+
+    //! Returns the struct cast to <tt>const float*</tt> array; use with care!
+    inline const float* Array() const
+    {
+        return (const float*)this;
+    }
+
+    //! Returns a string (r, g, b, a)
+    inline std::string ToString() const
+    {
+        std::stringstream s;
+        s.precision(3);
+        s << "(" << r << ", " << g << ", " << b << ", " << a << ")";
+        return s.str();
+    }
+
+    inline bool operator==(const Gfx::Color &other) const
+    {
+        return r == other.r && g == other.g && b == other.b && a == other.a;
+    }
+};
+
+/**
+  \struct ColorHSV
+  \brief HSV color */
+struct ColorHSV
+{
+    float h, s, v;
+
+    ColorHSV(float aH = 0.0f, float aS = 0.0f, float aV = 0.0f)
+     : h(aH), s(aS), v(aV) {}
+
+     //! Returns a string "(h, s, v)"
+     inline std::string ToString() const
+     {
+        std::stringstream s;
+        s.precision(3);
+        s << "(" << h << ", " << s << ", " << v << ")";
+        return s.str();
+     }
+};
+
+//! Converts a RGB color to HSV color
+Gfx::ColorHSV RGB2HSV(Gfx::Color color);
+
+//! Converts a HSV color to RGB color
+Gfx::Color HSV2RGB(Gfx::ColorHSV color);
+
+}; // namespace Gfx
+