Add float color structure.

Quik/QuikGeometry.cs

@@ -139,8 +139,62 @@ namespace Quik
         public static readonly QColor Cyan = new QColor(0, 255, 255, 255);
         public static readonly QColor Magenta = new QColor(255, 0, 255, 255);
         public static readonly QColor White = new QColor(255, 255, 255, 255);
+
+        public static explicit operator QColorF(QColor a)
+        {
+            return new QColorF(a.R/255.0f, a.G/255.0f, a.B/255.0f, a.A/255.0f);
+        }
     }
 
+    public struct QColorF
+    {
+        /// <summary>
+        /// Red channel.
+        /// </summary>
+        public float R;
+        /// <summary>
+        /// Green channel.
+        /// </summary>
+        public float G;
+        /// <summary>
+        /// Blue channel.
+        /// </summary>
+        public float B;
+        /// <summary>
+        /// Alpha channel.
+        /// </summary>
+        public float A;
+
+        public QColorF(float r, float g, float b, float a)
+        {
+            R = r; G = g; B = b; A = a;
+        }
+        public QColorF(float r, float g, float b) : this(r, g, b, 1.0f) { }
+        public QColorF(uint hexCode)
+        {
+            R = ((hexCode >> 24) & 0xFF)/255.0f;
+            G = ((hexCode >> 16) & 0xFF)/255.0f;
+            B = ((hexCode >> 8 ) & 0xFF)/255.0f;
+            A = ((hexCode >> 0 ) & 0xFF)/255.0f;
+        }
+        public QColorF(int hexCode) : this((uint)hexCode) { }
+
+        public static readonly QColorF Black = new QColorF(0, 0, 0, 1.0f);
+        public static readonly QColorF Red = new QColorF(1.0f, 0, 0, 1.0f);
+        public static readonly QColorF Green = new QColorF(0, 1, 0, 1);
+        public static readonly QColorF Blue = new QColorF(0, 0, 1, 1);
+        public static readonly QColorF Yellow = new QColorF(1, 1, 0, 1);
+        public static readonly QColorF Cyan = new QColorF(0, 1, 1, 1);
+        public static readonly QColorF Magenta = new QColorF(1, 0, 1, 1);
+        public static readonly QColorF White = new QColorF(1, 1, 1, 1);
+
+        public static explicit operator QColor(QColorF a)
+        {
+            return new QColor((byte)(a.R * 255), (byte)(a.G * 255), (byte)(a.B * 255), (byte)(a.A * 255));
+        }
+    }
+
+
     /// <summary>
     /// A bezier curve segment.
     /// </summary>