space-wizards/RobustToolbox
1
0
Fork 0
mirror of https://github.com/space-wizards/RobustToolbox.git synced 2026-02-14 19:29:36 +01:00
Code Issues Packages Projects Releases Wiki Activity

Add color dst/src factor blend helper.

Browse Source
This commit is contained in:
Pieter-Jan Briers
2018-11-29 21:36:54 +01:00
parent d0e8ed10b8
commit d478e2fdbb
1 changed files with 99 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

99
SS14.Shared.Maths/Color.cs
View File

@@ -25,6 +25,7 @@
using System;
using System.Collections.Generic;
using JetBrains.Annotations;
namespace SS14.Shared.Maths
{
@@ -695,6 +696,9 @@ namespace SS14.Shared.Maths
/// Interpolate two colors with a lambda, AKA returning the two colors combined with a ratio of
/// <paramref name="lambda" />.
/// </summary>
/// <remarks>
/// This method is opposite of GLSL's <c>mix()</c> function.
/// </remarks>
/// <param name="endPoint1"></param>
/// <param name="endPoint2"></param>
/// <param name="lambda">
@@ -757,6 +761,86 @@ namespace SS14.Shared.Maths
throw new ArgumentException("Invalid color code and no fallback provided.", nameof(hexColor));
}
public static Color Blend(Color dstColor, Color srcColor, BlendFactor dstFactor, BlendFactor srcFactor)
{
var dst = new Vector3(dstColor.R, dstColor.G, dstColor.B);
var src = new Vector3(srcColor.R, srcColor.G, srcColor.B);
var ret = new Vector3();
switch (dstFactor)
{
case BlendFactor.Zero:
break;
case BlendFactor.One:
ret = dst;
break;
case BlendFactor.SrcColor:
ret = dst * src;
break;
case BlendFactor.OneMinusSrcColor:
ret = dst * (Vector3.One - src);
break;
case BlendFactor.DstColor:
ret = dst * dst;
break;
case BlendFactor.OneMinusDstColor:
ret = dst * (Vector3.One - dst);
break;
case BlendFactor.SrcAlpha:
ret = dst * srcColor.A;
break;
case BlendFactor.OneMinusSrcAlpha:
ret = dst * (1 - srcColor.A);
break;
case BlendFactor.DstAlpha:
ret = dst * dstColor.A;
break;
case BlendFactor.OneMinusDstAlpha:
ret = dst * (1 - dstColor.A);
break;
default:
throw new NotImplementedException();
}
switch (srcFactor)
{
case BlendFactor.Zero:
break;
case BlendFactor.One:
ret += src;
break;
case BlendFactor.SrcColor:
ret += src * src;
break;
case BlendFactor.OneMinusSrcColor:
ret += src * (Vector3.One - src);
break;
case BlendFactor.DstColor:
ret += src * dst;
break;
case BlendFactor.OneMinusDstColor:
ret += src * (Vector3.One - dst);
break;
case BlendFactor.SrcAlpha:
ret += src * srcColor.A;
break;
case BlendFactor.OneMinusSrcAlpha:
ret += src * (1 - srcColor.A);
break;
case BlendFactor.DstAlpha:
ret += src * dstColor.A;
break;
case BlendFactor.OneMinusDstAlpha:
ret += src * (1 - dstColor.A);
break;
default:
throw new NotImplementedException();
}
return new Color(ret.X, ret.Y, ret.Z, Math.Min(0, dstColor.A + dstColor.A * srcColor.A));
}
public string ToHex()
{
return $"#{RByte:X2}{GByte:X2}{BByte:X2}{AByte:X2}";
@@ -776,6 +860,21 @@ namespace SS14.Shared.Maths
FloatMath.CloseTo(A, other.A);
}
[PublicAPI]
public enum BlendFactor
{
Zero,
One,
SrcColor,
OneMinusSrcColor,
DstColor,
OneMinusDstColor,
SrcAlpha,
OneMinusSrcAlpha,
DstAlpha,
OneMinusDstAlpha,
}
#region Static Colors
/// <summary>