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July 16, 2018 13:07
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// Fade in | |
{ | |
float x0 = ch("../PARAM/start_crossfade_frame"); | |
float x1 = ch("../PARAM/end_crossfade_frame"); | |
float a1 = 0.01; | |
float a0 = a1 / (2 * (x1 - x0)); | |
float b1 = a0 * (x1 - x0) * (x1 - x0) - a1 * x1; | |
return if($FF < x0, 0, if($FF < x1, a0 * ($FF - x0) * ($FF - x0), a1 * $FF + b1)); | |
} | |
// Fade out | |
{ | |
float x0 = ch("../PARAM/start_crossfade_frame"); | |
float x1 = ch("../PARAM/end_crossfade_frame"); | |
float a0 = 0.1; | |
float a1 = - a0 / (2 * (x1 - x0)); | |
float b1 = - 2.0 * a1 * x1; | |
float c1 = ((a0 - b1) - a1 * x0) * x0; | |
float b2 = (a1 * x1 + b1) * x1 + c1; | |
return if($FF < x1, if($FF < x0, a0 * $FF, (a1 * $FF + b1) * $FF + c1), b2); | |
} |
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