From 9148ce9f3c245c3a9c10857f69e9d338c5593d3d Mon Sep 17 00:00:00 2001 From: Sergey Sharybin Date: Mon, 13 Feb 2017 10:00:46 +0100 Subject: F-Curve normalization: Do proper curve min/max instead of handle min/max Would be cool to find some way to cache the results. --- source/blender/editors/animation/anim_draw.c | 74 +++++++++++++++++++++++++--- 1 file changed, 67 insertions(+), 7 deletions(-) (limited to 'source/blender/editors/animation/anim_draw.c') diff --git a/source/blender/editors/animation/anim_draw.c b/source/blender/editors/animation/anim_draw.c index 0a0952870c3..a4ba95420c1 100644 --- a/source/blender/editors/animation/anim_draw.c +++ b/source/blender/editors/animation/anim_draw.c @@ -46,6 +46,8 @@ #include "BLI_dlrbTree.h" #include "BKE_context.h" +#include "BKE_curve.h" +#include "BKE_fcurve.h" #include "BKE_global.h" #include "BKE_nla.h" #include "BKE_mask.h" @@ -309,7 +311,7 @@ static float normalization_factor_get(Scene *scene, FCurve *fcu, short flag, flo fcu->prev_norm_factor = 1.0f; if (fcu->bezt) { const bool use_preview_only = PRVRANGEON; - BezTriple *bezt; + const BezTriple *bezt; int i; float max_coord = -FLT_MAX; float min_coord = FLT_MAX; @@ -326,13 +328,71 @@ static float normalization_factor_get(Scene *scene, FCurve *fcu, short flag, flo { continue; } - max_coord = max_ff(max_coord, bezt->vec[0][1]); - max_coord = max_ff(max_coord, bezt->vec[1][1]); - max_coord = max_ff(max_coord, bezt->vec[2][1]); - min_coord = min_ff(min_coord, bezt->vec[0][1]); - min_coord = min_ff(min_coord, bezt->vec[1][1]); - min_coord = min_ff(min_coord, bezt->vec[2][1]); + if (i == 0) { + /* We ignore extrapolation flags and handle here, and use the + * control point position only. so we normalize "interesting" + * part of the curve. + * + * Here we handle left extrapolation. + */ + max_coord = max_ff(max_coord, bezt->vec[1][1]); + + min_coord = min_ff(min_coord, bezt->vec[1][1]); + } + else { + const BezTriple *prev_bezt = bezt - 1; + if (prev_bezt->ipo == BEZT_IPO_CONST) { + /* Constant interpolation: previous CV value is used up + * to the current keyframe. + */ + max_coord = max_ff(max_coord, bezt->vec[1][1]); + min_coord = min_ff(min_coord, bezt->vec[1][1]); + } + else if (prev_bezt->ipo == BEZT_IPO_LIN) { + /* Linear interpolation: min/max using both previous and + * and current CV. + */ + max_coord = max_ff(max_coord, bezt->vec[1][1]); + min_coord = min_ff(min_coord, bezt->vec[1][1]); + max_coord = max_ff(max_coord, prev_bezt->vec[1][1]); + min_coord = min_ff(min_coord, prev_bezt->vec[1][1]); + } + else if (prev_bezt->ipo == BEZT_IPO_BEZ) { + const int resol = fcu->driver + ? 32 + : min_ii((int)(5.0f * len_v2v2(bezt->vec[1], prev_bezt->vec[1])), 32); + if (resol < 2) { + max_coord = max_ff(max_coord, prev_bezt->vec[1][1]); + min_coord = min_ff(min_coord, prev_bezt->vec[1][1]); + } + else { + float data[120]; + float v1[2], v2[2], v3[2], v4[2]; + + v1[0] = prev_bezt->vec[1][0]; + v1[1] = prev_bezt->vec[1][1]; + v2[0] = prev_bezt->vec[2][0]; + v2[1] = prev_bezt->vec[2][1]; + + v3[0] = bezt->vec[0][0]; + v3[1] = bezt->vec[0][1]; + v4[0] = bezt->vec[1][0]; + v4[1] = bezt->vec[1][1]; + + correct_bezpart(v1, v2, v3, v4); + + BKE_curve_forward_diff_bezier(v1[0], v2[0], v3[0], v4[0], data, resol, sizeof(float) * 3); + BKE_curve_forward_diff_bezier(v1[1], v2[1], v3[1], v4[1], data + 1, resol, sizeof(float) * 3); + + for (int j = 0; j <= resol; ++j) { + const float *fp = &data[j * 3]; + max_coord = max_ff(max_coord, fp[1]); + min_coord = min_ff(min_coord, fp[1]); + } + } + } + } } if (max_coord > min_coord) { -- cgit v1.2.3