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GPencil: Fix unreported switch direction not flipping weights 

There was an unreported bug that switch direction would not switch the order of the vertex group weights. This caused join to do it wrong as well.

Changed to use `BLI_array_reverse` function here to reverse both the normal points and the weights, therefore simplifying the code.

Differential Revision: https://developer.blender.org/D12251
This commit is contained in:
Henrik Dick 2021-08-17 22:16:16 +02:00 committed by Antonio Vazquez
parent 23132fcdc1
commit e3098de2a1
1 changed files with 6 additions and 39 deletions
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45
source/blender/blenkernel/intern/gpencil_geom.cc
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@ -31,6 +31,7 @@
#include "MEM_guardedalloc.h"
#include "BLI_array_utils.h"
#include "BLI_blenlib.h"
#include "BLI_float3.hh"
#include "BLI_ghash.h"
@ -2817,46 +2818,12 @@ void BKE_gpencil_stroke_set_random_color(bGPDstroke *gps)
/* Flip stroke. */
void BKE_gpencil_stroke_flip(bGPDstroke *gps)
{
int end = gps->totpoints - 1;
/* Reverse points. */
BLI_array_reverse(gps->points, gps->totpoints);
for (int i = 0; i < gps->totpoints / 2; i++) {
bGPDspoint *point, *point2;
bGPDspoint pt;
/* save first point */
point = &gps->points[i];
pt.x = point->x;
pt.y = point->y;
pt.z = point->z;
pt.flag = point->flag;
pt.pressure = point->pressure;
pt.strength = point->strength;
pt.time = point->time;
copy_v4_v4(pt.vert_color, point->vert_color);
/* replace first point with last point */
point2 = &gps->points[end];
point->x = point2->x;
point->y = point2->y;
point->z = point2->z;
point->flag = point2->flag;
point->pressure = point2->pressure;
point->strength = point2->strength;
point->time = point2->time;
copy_v4_v4(point->vert_color, point2->vert_color);
/* replace last point with first saved before */
point = &gps->points[end];
point->x = pt.x;
point->y = pt.y;
point->z = pt.z;
point->flag = pt.flag;
point->pressure = pt.pressure;
point->strength = pt.strength;
point->time = pt.time;
copy_v4_v4(point->vert_color, pt.vert_color);
end--;
/* Reverse vertex groups if available. */
if (gps->dvert) {
BLI_array_reverse(gps->dvert, gps->totpoints);
}
}