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Method Process

Source/Engine/Animations/AlphaBlend.h:95–142 · view source on GitHub ↗

Converts the input alpha value from a linear 0-1 value into the output alpha described by blend mode. The alpha (normalized to 0-1). The mode. The output alpha (normalized to 0-1).

Source from the content-addressed store, hash-verified

93	/// <param name="mode">The mode.</param>
94	/// <returns>The output alpha (normalized to 0-1).</returns>
95	static float Process(float alpha, AlphaBlendMode mode)
96	{
97	switch (mode)
98	{
99	case AlphaBlendMode::Sinusoidal:
100	alpha = (Math::Sin(alpha * PI - PI_HALF) + 1.0f) / 2.0f;
101	break;
102	case AlphaBlendMode::Cubic:
103	alpha = Math::CubicInterp<float>(0.0f, 0.0f, 1.0f, 0.0f, alpha);
104	break;
105	case AlphaBlendMode::QuadraticInOut:
106	alpha = Math::InterpEaseInOut<float>(0.0f, 1.0f, alpha, 2);
107	break;
108	case AlphaBlendMode::CubicInOut:
109	alpha = Math::InterpEaseInOut<float>(0.0f, 1.0f, alpha, 3);
110	break;
111	case AlphaBlendMode::HermiteCubic:
112	alpha = Math::SmoothStep(0.0f, 1.0f, alpha);
113	break;
114	case AlphaBlendMode::QuarticInOut:
115	alpha = Math::InterpEaseInOut<float>(0.0f, 1.0f, alpha, 4);
116	break;
117	case AlphaBlendMode::QuinticInOut:
118	alpha = Math::InterpEaseInOut<float>(0.0f, 1.0f, alpha, 5);
119	break;
120	case AlphaBlendMode::CircularIn:
121	alpha = Math::InterpCircularIn<float>(0.0f, 1.0f, alpha);
122	break;
123	case AlphaBlendMode::CircularOut:
124	alpha = Math::InterpCircularOut<float>(0.0f, 1.0f, alpha);
125	break;
126	case AlphaBlendMode::CircularInOut:
127	alpha = Math::InterpCircularInOut<float>(0.0f, 1.0f, alpha);
128	break;
129	case AlphaBlendMode::ExpIn:
130	alpha = Math::InterpExpoIn<float>(0.0f, 1.0f, alpha);
131	break;
132	case AlphaBlendMode::ExpOut:
133	alpha = Math::InterpExpoOut<float>(0.0f, 1.0f, alpha);
134	break;
135	case AlphaBlendMode::ExpInOut:
136	alpha = Math::InterpExpoInOut<float>(0.0f, 1.0f, alpha);
137	break;
138	default: ;
139	}
140
141	return Math::Saturate<float>(alpha);
142	}
143	};

Callers 1

OnKeyDownMethod · 0.45

Calls 2

SinFunction · 0.50

SmoothStepFunction · 0.50

Tested by

no test coverage detected