diff options
Diffstat (limited to 'modules')
3 files changed, 165 insertions, 12 deletions
diff --git a/modules/mono/glue/GodotSharp/GodotSharp/Core/Color.cs b/modules/mono/glue/GodotSharp/GodotSharp/Core/Color.cs index f49023555b..4075a878d2 100644 --- a/modules/mono/glue/GodotSharp/GodotSharp/Core/Color.cs +++ b/modules/mono/glue/GodotSharp/GodotSharp/Core/Color.cs @@ -1,5 +1,6 @@ using System; using System.Runtime.InteropServices; +using Godot.NativeInterop; namespace Godot { @@ -187,6 +188,19 @@ namespace Godot } /// <summary> + /// Returns the light intensity of the color, as a value between 0.0 and 1.0 (inclusive). + /// This is useful when determining light or dark color. Colors with a luminance smaller + /// than 0.5 can be generally considered dark. + /// Note: <see cref="Luminance"/> relies on the color being in the linear color space to + /// return an accurate relative luminance value. If the color is in the sRGB color space + /// use <see cref="SrgbToLinear"/> to convert it to the linear color space first. + /// </summary> + public readonly float Luminance + { + get { return 0.2126f * r + 0.7152f * g + 0.0722f * b; } + } + + /// <summary> /// Access color components using their index. /// </summary> /// <value> @@ -363,6 +377,35 @@ namespace Godot } /// <summary> + /// Returns the color converted to the sRGB color space. + /// This method assumes the original color is in the linear color space. + /// See also <see cref="SrgbToLinear"/> which performs the opposite operation. + /// </summary> + /// <returns>The sRGB color.</returns> + public readonly Color LinearToSrgb() + { + return new Color( + r < 0.0031308f ? 12.92f * r : (1.0f + 0.055f) * (float)Mathf.Pow(r, 1.0f / 2.4f) - 0.055f, + g < 0.0031308f ? 12.92f * g : (1.0f + 0.055f) * (float)Mathf.Pow(g, 1.0f / 2.4f) - 0.055f, + b < 0.0031308f ? 12.92f * b : (1.0f + 0.055f) * (float)Mathf.Pow(b, 1.0f / 2.4f) - 0.055f, a); + } + + /// <summary> + /// Returns the color converted to linear color space. + /// This method assumes the original color already is in sRGB color space. + /// See also <see cref="LinearToSrgb"/> which performs the opposite operation. + /// </summary> + /// <returns>The color in linear color space.</returns> + public readonly Color SrgbToLinear() + { + return new Color( + r < 0.04045f ? r * (1.0f / 12.92f) : (float)Mathf.Pow((r + 0.055f) * (float)(1.0 / (1.0 + 0.055)), 2.4f), + g < 0.04045f ? g * (1.0f / 12.92f) : (float)Mathf.Pow((g + 0.055f) * (float)(1.0 / (1.0 + 0.055)), 2.4f), + b < 0.04045f ? b * (1.0f / 12.92f) : (float)Mathf.Pow((b + 0.055f) * (float)(1.0 / (1.0 + 0.055)), 2.4f), + a); + } + + /// <summary> /// Returns the color converted to an unsigned 32-bit integer in ABGR /// format (each byte represents a color channel). /// ABGR is the reversed version of the default format. @@ -565,6 +608,10 @@ namespace Godot /// <see cref="Colors"/> constants. /// </summary> /// <param name="code">The HTML color code or color name to construct from.</param> + /// <exception cref="ArgumentOutOfRangeException"> + /// A color cannot be inferred from the given <paramref name="code"/>. + /// It was invalid HTML and a color with that name was not found. + /// </exception> public Color(string code) { if (HtmlIsValid(code)) @@ -597,7 +644,7 @@ namespace Godot /// <exception name="ArgumentOutOfRangeException"> /// <paramref name="rgba"/> color code is invalid. /// </exception> - private static Color FromHTML(ReadOnlySpan<char> rgba) + public static Color FromHTML(ReadOnlySpan<char> rgba) { Color c; if (rgba.Length == 0) @@ -705,28 +752,59 @@ namespace Godot /// the constants defined in <see cref="Colors"/>. /// </summary> /// <param name="name">The name of the color.</param> + /// <exception cref="ArgumentOutOfRangeException"> + /// A color with the given name is not found. + /// </exception> /// <returns>The constructed color.</returns> private static Color Named(string name) { + if (!FindNamedColor(name, out Color color)) + { + throw new ArgumentOutOfRangeException($"Invalid Color Name: {name}"); + } + + return color; + } + + /// <summary> + /// Returns a color according to the standardized name, with the + /// specified alpha value. Supported color names are the same as + /// the constants defined in <see cref="Colors"/>. + /// If a color with the given name is not found, it returns + /// <paramref name="default"/>. + /// </summary> + /// <param name="name">The name of the color.</param> + /// <param name="default"> + /// The default color to return when a color with the given name + /// is not found. + /// </param> + /// <returns>The constructed color.</returns> + private static Color Named(string name, Color @default) + { + if (!FindNamedColor(name, out Color color)) + { + return @default; + } + + return color; + } + + private static bool FindNamedColor(string name, out Color color) + { name = name.Replace(" ", string.Empty); name = name.Replace("-", string.Empty); name = name.Replace("_", string.Empty); name = name.Replace("'", string.Empty); name = name.Replace(".", string.Empty); - name = name.ToUpper(); - - if (!Colors.namedColors.ContainsKey(name)) - { - throw new ArgumentOutOfRangeException($"Invalid Color Name: {name}"); - } + name = name.ToUpperInvariant(); - return Colors.namedColors[name]; + return Colors.namedColors.TryGetValue(name, out color); } /// <summary> - /// Constructs a color from an HSV profile, with values on the - /// range of 0 to 1. This is equivalent to using each of - /// the <c>h</c>/<c>s</c>/<c>v</c> properties, but much more efficient. + /// Constructs a color from an HSV profile. The <paramref name="hue"/>, + /// <paramref name="saturation"/>, and <paramref name="value"/> are typically + /// between 0.0 and 1.0. /// </summary> /// <param name="hue">The HSV hue, typically on the range of 0 to 1.</param> /// <param name="saturation">The HSV saturation, typically on the range of 0 to 1.</param> @@ -841,13 +919,78 @@ namespace Godot return ParseCol4(str, index) * 16 + ParseCol4(str, index + 1); } + /// <summary> + /// Constructs a color from an OK HSL profile. The <paramref name="hue"/>, + /// <paramref name="saturation"/>, and <paramref name="lightness"/> are typically + /// between 0.0 and 1.0. + /// </summary> + /// <param name="hue">The OK HSL hue, typically on the range of 0 to 1.</param> + /// <param name="saturation">The OK HSL saturation, typically on the range of 0 to 1.</param> + /// <param name="lightness">The OK HSL lightness, typically on the range of 0 to 1.</param> + /// <param name="alpha">The alpha (transparency) value, typically on the range of 0 to 1.</param> + /// <returns>The constructed color.</returns> + public static Color FromOkHsl(float hue, float saturation, float lightness, float alpha = 1.0f) + { + return NativeFuncs.godotsharp_color_from_ok_hsl(hue, saturation, lightness, alpha); + } + + /// <summary> + /// Encodes a <see cref="Color"/> from a RGBE9995 format integer. + /// See <see cref="Image.Format.Rgbe9995"/>. + /// </summary> + /// <param name="rgbe">The RGBE9995 encoded color.</param> + /// <returns>The constructed color.</returns> + public static Color FromRgbe9995(uint rgbe) + { + float r = rgbe & 0x1ff; + float g = (rgbe >> 9) & 0x1ff; + float b = (rgbe >> 18) & 0x1ff; + float e = rgbe >> 27; + float m = (float)Mathf.Pow(2.0f, e - 15.0f - 9.0f); + + float rd = r * m; + float gd = g * m; + float bd = b * m; + + return new Color(rd, gd, bd, 1.0f); + } + + /// <summary> + /// Constructs a color from the given string, which can be either an HTML color + /// code or a named color. Returns <paramref name="default"/> if the color cannot + /// be inferred from the string. Supported color names are the same as the + /// <see cref="Colors"/> constants. + /// </summary> + /// <param name="str">The HTML color code or color name.</param> + /// <param name="default">The fallback color to return if the color cannot be inferred.</param> + /// <returns>The constructed color.</returns> + public static Color FromString(string str, Color @default) + { + if (HtmlIsValid(str)) + { + return FromHTML(str); + } + else + { + return Named(str, @default); + } + } + private static string ToHex32(float val) { byte b = (byte)Mathf.RoundToInt(Mathf.Clamp(val * 255, 0, 255)); return b.HexEncode(); } - internal static bool HtmlIsValid(ReadOnlySpan<char> color) + /// <summary> + /// Returns <see langword="true"/> if <paramref name="color"/> is a valid HTML hexadecimal + /// color string. The string must be a hexadecimal value (case-insensitive) of either 3, + /// 4, 6 or 8 digits, and may be prefixed by a hash sign (<c>#</c>). This method is + /// identical to <see cref="StringExtensions.IsValidHtmlColor(string)"/>. + /// </summary> + /// <param name="color">The HTML hexadecimal color string.</param> + /// <returns>Whether or not the string was a valid HTML hexadecimal color string.</returns> + public static bool HtmlIsValid(ReadOnlySpan<char> color) { if (color.IsEmpty) { diff --git a/modules/mono/glue/GodotSharp/GodotSharp/Core/NativeInterop/NativeFuncs.cs b/modules/mono/glue/GodotSharp/GodotSharp/Core/NativeInterop/NativeFuncs.cs index c7deb6423b..57488bd586 100644 --- a/modules/mono/glue/GodotSharp/GodotSharp/Core/NativeInterop/NativeFuncs.cs +++ b/modules/mono/glue/GodotSharp/GodotSharp/Core/NativeInterop/NativeFuncs.cs @@ -153,6 +153,8 @@ namespace Godot.NativeInterop internal static partial void godotsharp_callable_call_deferred(in godot_callable p_callable, godot_variant** p_args, int p_arg_count); + internal static partial Color godotsharp_color_from_ok_hsl(float p_h, float p_s, float p_l, float p_alpha); + // GDNative functions // gdnative.h diff --git a/modules/mono/glue/runtime_interop.cpp b/modules/mono/glue/runtime_interop.cpp index 338e5a0147..a3280a0739 100644 --- a/modules/mono/glue/runtime_interop.cpp +++ b/modules/mono/glue/runtime_interop.cpp @@ -514,6 +514,13 @@ void godotsharp_callable_call_deferred(Callable *p_callable, const Variant **p_a p_callable->call_deferredp(p_args, p_arg_count); } +godot_color godotsharp_color_from_ok_hsl(float p_h, float p_s, float p_l, float p_alpha) { + godot_color ret; + Color *dest = (Color *)&ret; + memnew_placement(dest, Color(Color::from_ok_hsl(p_h, p_s, p_l, p_alpha))); + return ret; +} + // GDNative functions // gdnative.h @@ -1345,6 +1352,7 @@ static const void *unmanaged_callbacks[]{ (void *)godotsharp_callable_get_data_for_marshalling, (void *)godotsharp_callable_call, (void *)godotsharp_callable_call_deferred, + (void *)godotsharp_color_from_ok_hsl, (void *)godotsharp_method_bind_ptrcall, (void *)godotsharp_method_bind_call, (void *)godotsharp_variant_new_string_name, |