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Anim: Add Sharpness to Ease operator #117287

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Christoph Lendenfeld merged 20 commits from ChrisLend/blender:graph_slider_ease_ease into main 2024-03-22 13:22:45 +01:00
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source/blender/editors/animation/keyframes_general.cc
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@ -704,10 +704,6 @@ void ease_fcurve_segment(FCurve *fcu, FCurveSegment *segment, const float factor
static float s_curve(const float x, const float width, const float shift)
{
/* Formula for 'S' curve we use for the "ease" sliders. The shift values move the curve verticaly
* or horizontaly. The range of the curve used is from 0 to 1 on "x" and "y" so we can scale it
* (width and height) and move it (xshift and y yshift) to crop the part of the curve we need.
* Slope determins how curvy the shape is */
const float x_shift = (x - shift) * width;
Sybren A. Stüvel commented 2024-01-19 11:46:02 +01:00
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This comment seems to be out of sync with the parameters.

This comment seems to be out of sync with the parameters.
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const float y = x_shift / sqrt(1 + pow2f(x_shift));
/* Normalize result to 0-1. */