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GP: Primitive: Fix jitter 

Missing vector calculation.
This commit is contained in:
Charlie Jolly 2018-12-19 12:18:16 +00:00
parent ac8cde69f5
commit dad260c164
1 changed files with 18 additions and 3 deletions
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21
source/blender/editors/gpencil/gpencil_primitive.c
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@ -826,12 +826,27 @@ static void gp_primitive_update_strokes(bContext *C, tGPDprimitive *tgpi)
/* exponential value */
const float exfactor = SQUARE(brush->gpencil_settings->draw_jitter + 2.0f);
const float fac = p2d->rnd[0] * exfactor * jitter;
if (p2d->rnd[0] > 0.5f) {
add_v2_fl(&p2d->x, -fac);
/* vector */
float mvec[2], svec[2];;
if (i > 0) {
mvec[0] = (p2d->x - (p2d - 1)->x);
mvec[1] = (p2d->y - (p2d - 1)->y);
normalize_v2(mvec);
}
else {
add_v2_fl(&p2d->x, fac);
zero_v2(mvec);
}
svec[0] = -mvec[1];
svec[1] = mvec[0];
if (p2d->rnd[0] > 0.5f) {
mul_v2_fl(svec, -fac);
}
else {
mul_v2_fl(svec, fac);
}
add_v2_v2(&p2d->x, svec);
}
/* apply randomness to pressure */