diff options
| -rw-r--r-- | source/blender/editors/gpencil/drawgpencil.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/source/blender/editors/gpencil/drawgpencil.c b/source/blender/editors/gpencil/drawgpencil.c index 4a48e9a4e3b..a89a038d760 100644 --- a/source/blender/editors/gpencil/drawgpencil.c +++ b/source/blender/editors/gpencil/drawgpencil.c @@ -122,11 +122,21 @@ static void gp_draw_stroke_buffer (tGPspoint *points, int totpoints, short thick glBegin(GL_LINE_STRIP); for (i=0, pt=points; i < totpoints && pt; i++, pt++) { + /* if there was a significant pressure change, stop the curve, change the thickness of the stroke, + * and continue drawing again (since line-width cannot change in middle of GL_LINE_STRIP) + */ if (fabs(pt->pressure - oldpressure) > 0.2f) { glEnd(); glLineWidth(pt->pressure * thickness); glBegin(GL_LINE_STRIP); + /* need to roll-back one point to ensure that there are no gaps in the stroke */ + if (i != 0) { + pt--; + glVertex2f(pt->x, pt->y); + pt++; + } + /* now the point we want... */ glVertex2f(pt->x, pt->y); oldpressure = pt->pressure; @@ -206,11 +216,21 @@ static void gp_draw_stroke_3d (bGPDspoint *points, int totpoints, short thicknes /* draw stroke curve */ glBegin(GL_LINE_STRIP); for (i=0, pt=points; i < totpoints && pt; i++, pt++) { + /* if there was a significant pressure change, stop the curve, change the thickness of the stroke, + * and continue drawing again (since line-width cannot change in middle of GL_LINE_STRIP) + */ if (fabs(pt->pressure - oldpressure) > 0.2f) { glEnd(); glLineWidth(pt->pressure * thickness); glBegin(GL_LINE_STRIP); + /* need to roll-back one point to ensure that there are no gaps in the stroke */ + if (i != 0) { + pt--; + glVertex3f(pt->x, pt->y, pt->z); + pt++; + } + /* now the point we want... */ glVertex3f(pt->x, pt->y, pt->z); oldpressure = pt->pressure; |