public static HsbColor FromColor(Color color) { var ret = new HsbColor(0f, 0f, 0f, color.a); var r = color.r; var g = color.g; var b = color.b; var max = Mathf.Max(r, Mathf.Max(g, b)); if (max <= 0) { return(ret); } var min = Mathf.Min(r, Mathf.Min(g, b)); var dif = max - min; if (max > min) { if (Math.Abs(g - max) < Tolerance) { ret.H = (b - r) / dif * 60f + 120f; } else if (Math.Abs(b - max) < Tolerance) { ret.H = (r - g) / dif * 60f + 240f; } else if (b > g) { ret.H = (g - b) / dif * 60f + 360f; } else { ret.H = (g - b) / dif * 60f; } if (ret.H < 0) { ret.H = ret.H + 360f; } } else { ret.H = 0; } ret.H *= 1f / 360f; ret.S = dif / max * 1f; ret.B = max; return(ret); }
public static HsbColor Lerp(HsbColor a, HsbColor b, float t) { float h, s; //check special case black (color.b==0): interpolate neither hue nor saturation! //check special case grey (color.s==0): don't interpolate hue! if (Math.Abs(a.B) < Tolerance) { h = b.H; s = b.S; } else if (Math.Abs(b.B) < Tolerance) { h = a.H; s = a.S; } else { if (Math.Abs(a.S) < Tolerance) { h = b.H; } else if (Math.Abs(b.S) < Tolerance) { h = a.H; } else { // works around bug with LerpAngle var angle = Mathf.LerpAngle(a.H * 360f, b.H * 360f, t); while (angle < 0f) { angle += 360f; } while (angle > 360f) { angle -= 360f; } h = angle / 360f; } s = Mathf.Lerp(a.S, b.S, t); } return(new HsbColor(h, s, Mathf.Lerp(a.B, b.B, t), Mathf.Lerp(a.A, b.A, t))); }
public static Color ToColor(HsbColor hsbColor) { var r = hsbColor.B; var g = hsbColor.B; var b = hsbColor.B; if (Math.Abs(hsbColor.S) < Tolerance) { return(new Color(Mathf.Clamp01(r), Mathf.Clamp01(g), Mathf.Clamp01(b), hsbColor.A)); } var max = hsbColor.B; var dif = hsbColor.B * hsbColor.S; var min = hsbColor.B - dif; var h = hsbColor.H * 360f; if (h < 60f) { r = max; g = h * dif / 60f + min; b = min; } else if (h < 120f) { r = -(h - 120f) * dif / 60f + min; g = max; b = min; } else if (h < 180f) { r = min; g = max; b = (h - 120f) * dif / 60f + min; } else if (h < 240f) { r = min; g = -(h - 240f) * dif / 60f + min; b = max; } else if (h < 300f) { r = (h - 240f) * dif / 60f + min; g = min; b = max; } else if (h <= 360f) { r = max; g = min; b = -(h - 360f) * dif / 60 + min; } else { r = 0; g = 0; b = 0; } return(new Color(Mathf.Clamp01(r), Mathf.Clamp01(g), Mathf.Clamp01(b), hsbColor.A)); }