774 lines
20 KiB
C#
774 lines
20 KiB
C#
using System;
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using System.Runtime.InteropServices;
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namespace Godot
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{
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[Serializable]
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[StructLayout(LayoutKind.Sequential)]
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public struct Color : IEquatable<Color>
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{
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public float r;
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public float g;
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public float b;
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public float a;
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public int r8
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{
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get
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{
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return (int)Math.Round(r * 255.0f);
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}
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set
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{
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r = value / 255.0f;
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}
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}
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public int g8
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{
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get
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{
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return (int)Math.Round(g * 255.0f);
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}
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set
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{
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g = value / 255.0f;
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}
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}
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public int b8
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{
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get
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{
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return (int)Math.Round(b * 255.0f);
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}
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set
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{
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b = value / 255.0f;
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}
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}
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public int a8
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{
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get
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{
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return (int)Math.Round(a * 255.0f);
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}
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set
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{
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a = value / 255.0f;
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}
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}
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public float h
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{
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get
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{
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float max = Math.Max(r, Math.Max(g, b));
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float min = Math.Min(r, Math.Min(g, b));
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float delta = max - min;
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if (delta == 0)
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return 0;
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float h;
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if (r == max)
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h = (g - b) / delta; // Between yellow & magenta
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else if (g == max)
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h = 2 + (b - r) / delta; // Between cyan & yellow
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else
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h = 4 + (r - g) / delta; // Between magenta & cyan
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h /= 6.0f;
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if (h < 0)
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h += 1.0f;
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return h;
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}
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set
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{
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this = FromHsv(value, s, v, a);
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}
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}
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public float s
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{
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get
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{
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float max = Math.Max(r, Math.Max(g, b));
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float min = Math.Min(r, Math.Min(g, b));
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float delta = max - min;
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return max != 0 ? delta / max : 0;
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}
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set
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{
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this = FromHsv(h, value, v, a);
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}
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}
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public float v
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{
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get
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{
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return Math.Max(r, Math.Max(g, b));
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}
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set
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{
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this = FromHsv(h, s, value, a);
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}
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}
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public static Color ColorN(string name, float alpha = 1f)
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{
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name = name.Replace(" ", String.Empty);
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name = name.Replace("-", String.Empty);
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name = name.Replace("_", String.Empty);
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name = name.Replace("'", String.Empty);
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name = name.Replace(".", String.Empty);
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name = name.ToLower();
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if (!Colors.namedColors.ContainsKey(name))
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{
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throw new ArgumentOutOfRangeException($"Invalid Color Name: {name}");
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}
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Color color = Colors.namedColors[name];
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color.a = alpha;
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return color;
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}
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public float this[int index]
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{
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get
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{
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switch (index)
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{
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case 0:
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return r;
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case 1:
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return g;
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case 2:
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return b;
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case 3:
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return a;
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default:
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throw new IndexOutOfRangeException();
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}
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}
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set
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{
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switch (index)
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{
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case 0:
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r = value;
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return;
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case 1:
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g = value;
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return;
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case 2:
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b = value;
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return;
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case 3:
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a = value;
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return;
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default:
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throw new IndexOutOfRangeException();
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}
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}
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}
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public void ToHsv(out float hue, out float saturation, out float value)
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{
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float max = (float)Mathf.Max(r, Mathf.Max(g, b));
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float min = (float)Mathf.Min(r, Mathf.Min(g, b));
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float delta = max - min;
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if (delta == 0)
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{
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hue = 0;
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}
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else
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{
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if (r == max)
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hue = (g - b) / delta; // Between yellow & magenta
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else if (g == max)
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hue = 2 + (b - r) / delta; // Between cyan & yellow
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else
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hue = 4 + (r - g) / delta; // Between magenta & cyan
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hue /= 6.0f;
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if (hue < 0)
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hue += 1.0f;
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}
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saturation = max == 0 ? 0 : 1f - 1f * min / max;
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value = max;
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}
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public static Color FromHsv(float hue, float saturation, float value, float alpha = 1.0f)
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{
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if (saturation == 0)
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{
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// acp_hromatic (grey)
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return new Color(value, value, value, alpha);
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}
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int i;
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float f, p, q, t;
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hue *= 6.0f;
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hue %= 6f;
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i = (int)hue;
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f = hue - i;
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p = value * (1 - saturation);
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q = value * (1 - saturation * f);
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t = value * (1 - saturation * (1 - f));
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switch (i)
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{
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case 0: // Red is the dominant color
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return new Color(value, t, p, alpha);
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case 1: // Green is the dominant color
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return new Color(q, value, p, alpha);
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case 2:
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return new Color(p, value, t, alpha);
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case 3: // Blue is the dominant color
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return new Color(p, q, value, alpha);
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case 4:
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return new Color(t, p, value, alpha);
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default: // (5) Red is the dominant color
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return new Color(value, p, q, alpha);
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}
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}
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public Color Blend(Color over)
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{
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Color res;
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float sa = 1.0f - over.a;
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res.a = a * sa + over.a;
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if (res.a == 0)
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{
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return new Color(0, 0, 0, 0);
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}
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res.r = (r * a * sa + over.r * over.a) / res.a;
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res.g = (g * a * sa + over.g * over.a) / res.a;
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res.b = (b * a * sa + over.b * over.a) / res.a;
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return res;
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}
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public Color Contrasted()
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{
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return new Color(
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(r + 0.5f) % 1.0f,
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(g + 0.5f) % 1.0f,
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(b + 0.5f) % 1.0f,
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a
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);
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}
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public Color Darkened(float amount)
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{
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Color res = this;
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res.r = res.r * (1.0f - amount);
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res.g = res.g * (1.0f - amount);
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res.b = res.b * (1.0f - amount);
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return res;
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}
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public Color Inverted()
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{
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return new Color(
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1.0f - r,
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1.0f - g,
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1.0f - b,
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a
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);
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}
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public Color Lightened(float amount)
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{
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Color res = this;
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res.r = res.r + (1.0f - res.r) * amount;
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res.g = res.g + (1.0f - res.g) * amount;
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res.b = res.b + (1.0f - res.b) * amount;
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return res;
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}
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public Color Lerp(Color to, float weight)
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{
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return new Color
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(
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Mathf.Lerp(r, to.r, weight),
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Mathf.Lerp(g, to.g, weight),
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Mathf.Lerp(b, to.b, weight),
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Mathf.Lerp(a, to.a, weight)
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);
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}
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public Color Lerp(Color to, Color weight)
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{
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return new Color
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(
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Mathf.Lerp(r, to.r, weight.r),
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Mathf.Lerp(g, to.g, weight.g),
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Mathf.Lerp(b, to.b, weight.b),
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Mathf.Lerp(a, to.a, weight.a)
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);
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}
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public uint ToAbgr32()
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{
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uint c = (byte)Math.Round(a * 255);
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c <<= 8;
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c |= (byte)Math.Round(b * 255);
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c <<= 8;
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c |= (byte)Math.Round(g * 255);
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c <<= 8;
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c |= (byte)Math.Round(r * 255);
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return c;
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}
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public ulong ToAbgr64()
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{
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ulong c = (ushort)Math.Round(a * 65535);
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c <<= 16;
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c |= (ushort)Math.Round(b * 65535);
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c <<= 16;
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c |= (ushort)Math.Round(g * 65535);
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c <<= 16;
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c |= (ushort)Math.Round(r * 65535);
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return c;
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}
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public uint ToArgb32()
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{
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uint c = (byte)Math.Round(a * 255);
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c <<= 8;
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c |= (byte)Math.Round(r * 255);
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c <<= 8;
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c |= (byte)Math.Round(g * 255);
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c <<= 8;
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c |= (byte)Math.Round(b * 255);
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return c;
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}
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public ulong ToArgb64()
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{
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ulong c = (ushort)Math.Round(a * 65535);
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c <<= 16;
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c |= (ushort)Math.Round(r * 65535);
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c <<= 16;
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c |= (ushort)Math.Round(g * 65535);
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c <<= 16;
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c |= (ushort)Math.Round(b * 65535);
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return c;
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}
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public uint ToRgba32()
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{
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uint c = (byte)Math.Round(r * 255);
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c <<= 8;
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c |= (byte)Math.Round(g * 255);
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c <<= 8;
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c |= (byte)Math.Round(b * 255);
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c <<= 8;
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c |= (byte)Math.Round(a * 255);
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return c;
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}
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public ulong ToRgba64()
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{
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ulong c = (ushort)Math.Round(r * 65535);
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c <<= 16;
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c |= (ushort)Math.Round(g * 65535);
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c <<= 16;
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c |= (ushort)Math.Round(b * 65535);
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c <<= 16;
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c |= (ushort)Math.Round(a * 65535);
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return c;
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}
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public string ToHtml(bool includeAlpha = true)
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{
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var txt = string.Empty;
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txt += ToHex32(r);
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txt += ToHex32(g);
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txt += ToHex32(b);
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if (includeAlpha)
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txt = ToHex32(a) + txt;
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return txt;
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}
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// Constructors
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public Color(float r, float g, float b, float a = 1.0f)
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{
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this.r = r;
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this.g = g;
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this.b = b;
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this.a = a;
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}
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public Color(Color c, float a = 1.0f)
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{
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r = c.r;
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g = c.g;
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b = c.b;
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this.a = a;
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}
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public Color(uint rgba)
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{
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a = (rgba & 0xFF) / 255.0f;
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rgba >>= 8;
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b = (rgba & 0xFF) / 255.0f;
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rgba >>= 8;
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g = (rgba & 0xFF) / 255.0f;
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rgba >>= 8;
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r = (rgba & 0xFF) / 255.0f;
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}
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public Color(ulong rgba)
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{
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a = (rgba & 0xFFFF) / 65535.0f;
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rgba >>= 16;
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b = (rgba & 0xFFFF) / 65535.0f;
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rgba >>= 16;
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g = (rgba & 0xFFFF) / 65535.0f;
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rgba >>= 16;
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r = (rgba & 0xFFFF) / 65535.0f;
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}
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private static int ParseCol8(string str, int ofs)
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{
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int ig = 0;
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for (int i = 0; i < 2; i++)
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{
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int c = str[i + ofs];
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int v;
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if (c >= '0' && c <= '9')
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{
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v = c - '0';
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}
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else if (c >= 'a' && c <= 'f')
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{
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v = c - 'a';
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v += 10;
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}
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else if (c >= 'A' && c <= 'F')
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{
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v = c - 'A';
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v += 10;
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}
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else
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{
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return -1;
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}
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if (i == 0)
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ig += v * 16;
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else
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ig += v;
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}
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return ig;
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}
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private String ToHex32(float val)
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{
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int v = Mathf.RoundToInt(Mathf.Clamp(val * 255, 0, 255));
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var ret = string.Empty;
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for (int i = 0; i < 2; i++)
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{
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char c;
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int lv = v & 0xF;
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if (lv < 10)
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c = (char)('0' + lv);
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else
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c = (char)('a' + lv - 10);
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v >>= 4;
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ret = c + ret;
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}
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return ret;
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}
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internal static bool HtmlIsValid(string color)
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{
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if (color.Length == 0)
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return false;
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if (color[0] == '#')
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color = color.Substring(1, color.Length - 1);
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bool alpha;
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switch (color.Length)
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{
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case 8:
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alpha = true;
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break;
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case 6:
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alpha = false;
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break;
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default:
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return false;
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}
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if (alpha)
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{
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if (ParseCol8(color, 0) < 0)
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return false;
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}
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int from = alpha ? 2 : 0;
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if (ParseCol8(color, from + 0) < 0)
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return false;
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if (ParseCol8(color, from + 2) < 0)
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return false;
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if (ParseCol8(color, from + 4) < 0)
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return false;
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return true;
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}
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public static Color Color8(byte r8, byte g8, byte b8, byte a8 = 255)
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{
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return new Color(r8 / 255f, g8 / 255f, b8 / 255f, a8 / 255f);
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}
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public Color(string rgba)
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{
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if (rgba.Length == 0)
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{
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r = 0f;
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g = 0f;
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b = 0f;
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a = 1.0f;
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return;
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}
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if (rgba[0] == '#')
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rgba = rgba.Substring(1);
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bool alpha;
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if (rgba.Length == 8)
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{
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alpha = true;
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}
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else if (rgba.Length == 6)
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{
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alpha = false;
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}
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else
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{
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throw new ArgumentOutOfRangeException("Invalid color code. Length is " + rgba.Length + " but a length of 6 or 8 is expected: " + rgba);
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}
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if (alpha)
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{
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a = ParseCol8(rgba, 0) / 255f;
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if (a < 0)
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throw new ArgumentOutOfRangeException("Invalid color code. Alpha part is not valid hexadecimal: " + rgba);
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}
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else
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{
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a = 1.0f;
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}
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int from = alpha ? 2 : 0;
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r = ParseCol8(rgba, from + 0) / 255f;
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if (r < 0)
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throw new ArgumentOutOfRangeException("Invalid color code. Red part is not valid hexadecimal: " + rgba);
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g = ParseCol8(rgba, from + 2) / 255f;
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if (g < 0)
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throw new ArgumentOutOfRangeException("Invalid color code. Green part is not valid hexadecimal: " + rgba);
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b = ParseCol8(rgba, from + 4) / 255f;
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if (b < 0)
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throw new ArgumentOutOfRangeException("Invalid color code. Blue part is not valid hexadecimal: " + rgba);
|
|
}
|
|
|
|
public static Color operator +(Color left, Color right)
|
|
{
|
|
left.r += right.r;
|
|
left.g += right.g;
|
|
left.b += right.b;
|
|
left.a += right.a;
|
|
return left;
|
|
}
|
|
|
|
public static Color operator -(Color left, Color right)
|
|
{
|
|
left.r -= right.r;
|
|
left.g -= right.g;
|
|
left.b -= right.b;
|
|
left.a -= right.a;
|
|
return left;
|
|
}
|
|
|
|
public static Color operator -(Color color)
|
|
{
|
|
return Colors.White - color;
|
|
}
|
|
|
|
public static Color operator *(Color color, float scale)
|
|
{
|
|
color.r *= scale;
|
|
color.g *= scale;
|
|
color.b *= scale;
|
|
color.a *= scale;
|
|
return color;
|
|
}
|
|
|
|
public static Color operator *(float scale, Color color)
|
|
{
|
|
color.r *= scale;
|
|
color.g *= scale;
|
|
color.b *= scale;
|
|
color.a *= scale;
|
|
return color;
|
|
}
|
|
|
|
public static Color operator *(Color left, Color right)
|
|
{
|
|
left.r *= right.r;
|
|
left.g *= right.g;
|
|
left.b *= right.b;
|
|
left.a *= right.a;
|
|
return left;
|
|
}
|
|
|
|
public static Color operator /(Color color, float scale)
|
|
{
|
|
color.r /= scale;
|
|
color.g /= scale;
|
|
color.b /= scale;
|
|
color.a /= scale;
|
|
return color;
|
|
}
|
|
|
|
public static Color operator /(Color left, Color right)
|
|
{
|
|
left.r /= right.r;
|
|
left.g /= right.g;
|
|
left.b /= right.b;
|
|
left.a /= right.a;
|
|
return left;
|
|
}
|
|
|
|
public static bool operator ==(Color left, Color right)
|
|
{
|
|
return left.Equals(right);
|
|
}
|
|
|
|
public static bool operator !=(Color left, Color right)
|
|
{
|
|
return !left.Equals(right);
|
|
}
|
|
|
|
public static bool operator <(Color left, Color right)
|
|
{
|
|
if (Mathf.IsEqualApprox(left.r, right.r))
|
|
{
|
|
if (Mathf.IsEqualApprox(left.g, right.g))
|
|
{
|
|
if (Mathf.IsEqualApprox(left.b, right.b))
|
|
return left.a < right.a;
|
|
return left.b < right.b;
|
|
}
|
|
|
|
return left.g < right.g;
|
|
}
|
|
|
|
return left.r < right.r;
|
|
}
|
|
|
|
public static bool operator >(Color left, Color right)
|
|
{
|
|
if (Mathf.IsEqualApprox(left.r, right.r))
|
|
{
|
|
if (Mathf.IsEqualApprox(left.g, right.g))
|
|
{
|
|
if (Mathf.IsEqualApprox(left.b, right.b))
|
|
return left.a > right.a;
|
|
return left.b > right.b;
|
|
}
|
|
|
|
return left.g > right.g;
|
|
}
|
|
|
|
return left.r > right.r;
|
|
}
|
|
|
|
public override bool Equals(object obj)
|
|
{
|
|
if (obj is Color)
|
|
{
|
|
return Equals((Color)obj);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
public bool Equals(Color other)
|
|
{
|
|
return r == other.r && g == other.g && b == other.b && a == other.a;
|
|
}
|
|
|
|
public bool IsEqualApprox(Color other)
|
|
{
|
|
return Mathf.IsEqualApprox(r, other.r) && Mathf.IsEqualApprox(g, other.g) && Mathf.IsEqualApprox(b, other.b) && Mathf.IsEqualApprox(a, other.a);
|
|
}
|
|
|
|
public override int GetHashCode()
|
|
{
|
|
return r.GetHashCode() ^ g.GetHashCode() ^ b.GetHashCode() ^ a.GetHashCode();
|
|
}
|
|
|
|
public override string ToString()
|
|
{
|
|
return String.Format("{0},{1},{2},{3}", r.ToString(), g.ToString(), b.ToString(), a.ToString());
|
|
}
|
|
|
|
public string ToString(string format)
|
|
{
|
|
return String.Format("{0},{1},{2},{3}", r.ToString(format), g.ToString(format), b.ToString(format), a.ToString(format));
|
|
}
|
|
}
|
|
}
|