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|
/*
* $Id$
*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2008, Blender Foundation
* This is a new part of Blender
*
* Contributor(s): Joshua Leung
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/editors/gpencil/drawgpencil.c
* \ingroup edgpencil
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stddef.h>
#include <math.h>
#include <float.h>
#include "BLO_sys_types.h"
#include "IMB_imbuf_types.h"
#include "BLI_math.h"
#include "BLI_blenlib.h"
#include "BLI_utildefines.h"
#include "DNA_gpencil_types.h"
#include "DNA_scene_types.h"
#include "DNA_screen_types.h"
#include "DNA_space_types.h"
#include "DNA_view3d_types.h"
#include "BKE_context.h"
#include "BKE_global.h"
#include "BKE_gpencil.h"
#include "WM_api.h"
#include "BIF_gl.h"
#include "BIF_glutil.h"
#include "ED_gpencil.h"
#include "ED_sequencer.h"
#include "ED_view3d.h"
#include "gpencil_intern.h"
/* ************************************************** */
/* GREASE PENCIL DRAWING */
/* ----- General Defines ------ */
/* flags for sflag */
enum {
GP_DRAWDATA_NOSTATUS = (1<<0), /* don't draw status info */
GP_DRAWDATA_ONLY3D = (1<<1), /* only draw 3d-strokes */
GP_DRAWDATA_ONLYV2D = (1<<2), /* only draw 'canvas' strokes */
GP_DRAWDATA_ONLYI2D = (1<<3), /* only draw 'image' strokes */
GP_DRAWDATA_IEDITHACK = (1<<4), /* special hack for drawing strokes in Image Editor (weird coordinates) */
};
/* thickness above which we should use special drawing */
#define GP_DRAWTHICKNESS_SPECIAL 3
/* ----- Tool Buffer Drawing ------ */
/* draw stroke defined in buffer (simple ogl lines/points for now, as dotted lines) */
static void gp_draw_stroke_buffer (tGPspoint *points, int totpoints, short thickness, short dflag, short sflag)
{
tGPspoint *pt;
int i;
/* error checking */
if ((points == NULL) || (totpoints <= 0))
return;
/* check if buffer can be drawn */
if (dflag & (GP_DRAWDATA_ONLY3D|GP_DRAWDATA_ONLYV2D))
return;
/* if drawing a single point, draw it larger */
if (totpoints == 1) {
/* draw point */
glBegin(GL_POINTS);
glVertex2f(points->x, points->y);
glEnd();
}
else if (sflag & GP_STROKE_ERASER) {
/* don't draw stroke at all! */
}
else {
float oldpressure = 0.0f;
/* draw stroke curve */
if (G.f & G_DEBUG) setlinestyle(2);
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 (fabsf(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;
}
else
glVertex2f(pt->x, pt->y);
}
glEnd();
if (G.f & G_DEBUG) setlinestyle(0);
}
}
/* ----- Existing Strokes Drawing (3D and Point) ------ */
/* draw a given stroke - just a single dot (only one point) */
static void gp_draw_stroke_point (bGPDspoint *points, short thickness, short sflag, int offsx, int offsy, int winx, int winy)
{
/* draw point */
if (sflag & GP_STROKE_3DSPACE) {
glBegin(GL_POINTS);
glVertex3f(points->x, points->y, points->z);
glEnd();
}
else {
int spacetype= 0; // XXX make local gpencil state var?
float co[2];
/* get coordinates of point */
if (sflag & GP_STROKE_2DSPACE) {
co[0]= points->x;
co[1]= points->y;
}
else if (sflag & GP_STROKE_2DIMAGE) {
co[0]= (points->x * winx) + offsx;
co[1]= (points->y * winy) + offsy;
}
else {
co[0]= (points->x / 100 * winx) + offsx;
co[1]= (points->y / 100 * winy) + offsy;
}
/* if thickness is less than GP_DRAWTHICKNESS_SPECIAL, simple dot looks ok
* - also mandatory in if Image Editor 'image-based' dot
*/
if ( (thickness < GP_DRAWTHICKNESS_SPECIAL) ||
((spacetype==SPACE_IMAGE) && (sflag & GP_STROKE_2DSPACE)) )
{
glBegin(GL_POINTS);
glVertex2fv(co);
glEnd();
}
else
{
/* draw filled circle as is done in circf (but without the matrix push/pops which screwed things up) */
GLUquadricObj *qobj = gluNewQuadric();
gluQuadricDrawStyle(qobj, GLU_FILL);
/* need to translate drawing position, but must reset after too! */
glTranslatef(co[0], co[1], 0.);
gluDisk(qobj, 0.0, thickness, 32, 1);
glTranslatef(-co[0], -co[1], 0.);
gluDeleteQuadric(qobj);
}
}
}
/* draw a given stroke in 3d (i.e. in 3d-space), using simple ogl lines */
static void gp_draw_stroke_3d (bGPDspoint *points, int totpoints, short thickness, short debug)
{
bGPDspoint *pt;
float oldpressure = 0.0f;
int i;
/* 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 (fabsf(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;
}
else
glVertex3f(pt->x, pt->y, pt->z);
}
glEnd();
/* draw debug points of curve on top? */
if (debug) {
glBegin(GL_POINTS);
for (i=0, pt=points; i < totpoints && pt; i++, pt++)
glVertex3f(pt->x, pt->y, pt->z);
glEnd();
}
}
/* ----- Fancy 2D-Stroke Drawing ------ */
/* draw a given stroke in 2d */
static void gp_draw_stroke (bGPDspoint *points, int totpoints, short thickness_s, short dflag, short sflag,
short debug, int offsx, int offsy, int winx, int winy)
{
/* otherwise thickness is twice that of the 3D view */
float thickness= (float)thickness_s * 0.5f;
/* if thickness is less than GP_DRAWTHICKNESS_SPECIAL, 'smooth' opengl lines look better
* - 'smooth' opengl lines are also required if Image Editor 'image-based' stroke
*/
if ( (thickness < GP_DRAWTHICKNESS_SPECIAL) ||
((dflag & GP_DRAWDATA_IEDITHACK) && (dflag & GP_DRAWDATA_ONLYV2D)) )
{
bGPDspoint *pt;
int i;
glBegin(GL_LINE_STRIP);
for (i=0, pt=points; i < totpoints && pt; i++, pt++) {
if (sflag & GP_STROKE_2DSPACE) {
glVertex2f(pt->x, pt->y);
}
else if (sflag & GP_STROKE_2DIMAGE) {
const float x= (pt->x * winx) + offsx;
const float y= (pt->y * winy) + offsy;
glVertex2f(x, y);
}
else {
const float x= (pt->x / 100 * winx) + offsx;
const float y= (pt->y / 100 * winy) + offsy;
glVertex2f(x, y);
}
}
glEnd();
}
/* tesselation code - draw stroke as series of connected quads with connection
* edges rotated to minimise shrinking artifacts, and rounded endcaps
*/
else
{
bGPDspoint *pt1, *pt2;
float pm[2];
int i;
glShadeModel(GL_FLAT);
glBegin(GL_QUADS);
for (i=0, pt1=points, pt2=points+1; i < (totpoints-1); i++, pt1++, pt2++) {
float s0[2], s1[2]; /* segment 'center' points */
float t0[2], t1[2]; /* tesselated coordinates */
float m1[2], m2[2]; /* gradient and normal */
float mt[2], sc[2]; /* gradient for thickness, point for end-cap */
float pthick; /* thickness at segment point */
/* get x and y coordinates from points */
if (sflag & GP_STROKE_2DSPACE) {
s0[0]= pt1->x; s0[1]= pt1->y;
s1[0]= pt2->x; s1[1]= pt2->y;
}
else if (sflag & GP_STROKE_2DIMAGE) {
s0[0]= (pt1->x * winx) + offsx;
s0[1]= (pt1->y * winy) + offsy;
s1[0]= (pt2->x * winx) + offsx;
s1[1]= (pt2->y * winy) + offsy;
}
else {
s0[0]= (pt1->x / 100 * winx) + offsx;
s0[1]= (pt1->y / 100 * winy) + offsy;
s1[0]= (pt2->x / 100 * winx) + offsx;
s1[1]= (pt2->y / 100 * winy) + offsy;
}
/* calculate gradient and normal - 'angle'=(ny/nx) */
m1[1]= s1[1] - s0[1];
m1[0]= s1[0] - s0[0];
normalize_v2(m1);
m2[1]= -m1[0];
m2[0]= m1[1];
/* always use pressure from first point here */
pthick= (pt1->pressure * thickness);
/* if the first segment, start of segment is segment's normal */
if (i == 0) {
/* draw start cap first
* - make points slightly closer to center (about halfway across)
*/
mt[0]= m2[0] * pthick * 0.5f;
mt[1]= m2[1] * pthick * 0.5f;
sc[0]= s0[0] - (m1[0] * pthick * 0.75f);
sc[1]= s0[1] - (m1[1] * pthick * 0.75f);
t0[0]= sc[0] - mt[0];
t0[1]= sc[1] - mt[1];
t1[0]= sc[0] + mt[0];
t1[1]= sc[1] + mt[1];
glVertex2fv(t0);
glVertex2fv(t1);
/* calculate points for start of segment */
mt[0]= m2[0] * pthick;
mt[1]= m2[1] * pthick;
t0[0]= s0[0] - mt[0];
t0[1]= s0[1] - mt[1];
t1[0]= s0[0] + mt[0];
t1[1]= s0[1] + mt[1];
/* draw this line twice (first to finish off start cap, then for stroke) */
glVertex2fv(t1);
glVertex2fv(t0);
glVertex2fv(t0);
glVertex2fv(t1);
}
/* if not the first segment, use bisector of angle between segments */
else {
float mb[2]; /* bisector normal */
float athick, dfac; /* actual thickness, difference between thicknesses */
/* calculate gradient of bisector (as average of normals) */
mb[0]= (pm[0] + m2[0]) / 2;
mb[1]= (pm[1] + m2[1]) / 2;
normalize_v2(mb);
/* calculate gradient to apply
* - as basis, use just pthick * bisector gradient
* - if cross-section not as thick as it should be, add extra padding to fix it
*/
mt[0]= mb[0] * pthick;
mt[1]= mb[1] * pthick;
athick= len_v2(mt);
dfac= pthick - (athick * 2);
if ( ((athick * 2.0f) < pthick) && (IS_EQF(athick, pthick)==0) )
{
mt[0] += (mb[0] * dfac);
mt[1] += (mb[1] * dfac);
}
/* calculate points for start of segment */
t0[0]= s0[0] - mt[0];
t0[1]= s0[1] - mt[1];
t1[0]= s0[0] + mt[0];
t1[1]= s0[1] + mt[1];
/* draw this line twice (once for end of current segment, and once for start of next) */
glVertex2fv(t1);
glVertex2fv(t0);
glVertex2fv(t0);
glVertex2fv(t1);
}
/* if last segment, also draw end of segment (defined as segment's normal) */
if (i == totpoints-2) {
/* for once, we use second point's pressure (otherwise it won't be drawn) */
pthick= (pt2->pressure * thickness);
/* calculate points for end of segment */
mt[0]= m2[0] * pthick;
mt[1]= m2[1] * pthick;
t0[0]= s1[0] - mt[0];
t0[1]= s1[1] - mt[1];
t1[0]= s1[0] + mt[0];
t1[1]= s1[1] + mt[1];
/* draw this line twice (once for end of stroke, and once for endcap)*/
glVertex2fv(t1);
glVertex2fv(t0);
glVertex2fv(t0);
glVertex2fv(t1);
/* draw end cap as last step
* - make points slightly closer to center (about halfway across)
*/
mt[0]= m2[0] * pthick * 0.5f;
mt[1]= m2[1] * pthick * 0.5f;
sc[0]= s1[0] + (m1[0] * pthick * 0.75f);
sc[1]= s1[1] + (m1[1] * pthick * 0.75f);
t0[0]= sc[0] - mt[0];
t0[1]= sc[1] - mt[1];
t1[0]= sc[0] + mt[0];
t1[1]= sc[1] + mt[1];
glVertex2fv(t1);
glVertex2fv(t0);
}
/* store stroke's 'natural' normal for next stroke to use */
copy_v2_v2(pm, m2);
}
glEnd();
}
/* draw debug points of curve on top? (original stroke points) */
if (debug) {
bGPDspoint *pt;
int i;
glBegin(GL_POINTS);
for (i=0, pt=points; i < totpoints && pt; i++, pt++) {
if (sflag & GP_STROKE_2DSPACE) {
glVertex2f(pt->x, pt->y);
}
else if (sflag & GP_STROKE_2DIMAGE) {
const float x= (float)((pt->x * winx) + offsx);
const float y= (float)((pt->y * winy) + offsy);
glVertex2f(x, y);
}
else {
const float x= (float)(pt->x / 100 * winx) + offsx;
const float y= (float)(pt->y / 100 * winy) + offsy;
glVertex2f(x, y);
}
}
glEnd();
}
}
/* ----- General Drawing ------ */
/* draw a set of strokes */
static void gp_draw_strokes (bGPDframe *gpf, int offsx, int offsy, int winx, int winy, int dflag,
short debug, short lthick, float color[4])
{
bGPDstroke *gps;
/* set color first (may need to reset it again later too) */
glColor4f(color[0], color[1], color[2], color[3]);
for (gps= gpf->strokes.first; gps; gps= gps->next) {
/* check if stroke can be drawn - checks here generally fall into pairs */
if ((dflag & GP_DRAWDATA_ONLY3D) && !(gps->flag & GP_STROKE_3DSPACE))
continue;
if (!(dflag & GP_DRAWDATA_ONLY3D) && (gps->flag & GP_STROKE_3DSPACE))
continue;
if ((dflag & GP_DRAWDATA_ONLYV2D) && !(gps->flag & GP_STROKE_2DSPACE))
continue;
if (!(dflag & GP_DRAWDATA_ONLYV2D) && (gps->flag & GP_STROKE_2DSPACE))
continue;
if ((dflag & GP_DRAWDATA_ONLYI2D) && !(gps->flag & GP_STROKE_2DIMAGE))
continue;
if (!(dflag & GP_DRAWDATA_ONLYI2D) && (gps->flag & GP_STROKE_2DIMAGE))
continue;
if ((gps->points == NULL) || (gps->totpoints < 1))
continue;
/* check which stroke-drawer to use */
if (gps->totpoints == 1)
gp_draw_stroke_point(gps->points, lthick, gps->flag, offsx, offsy, winx, winy);
else if (dflag & GP_DRAWDATA_ONLY3D)
gp_draw_stroke_3d(gps->points, gps->totpoints, lthick, debug);
else if (gps->totpoints > 1)
gp_draw_stroke(gps->points, gps->totpoints, lthick, dflag, gps->flag, debug, offsx, offsy, winx, winy);
}
}
/* draw grease-pencil datablock */
static void gp_draw_data (bGPdata *gpd, int offsx, int offsy, int winx, int winy, int cfra, int dflag)
{
bGPDlayer *gpl;
// bGPDlayer *actlay=NULL; // UNUSED
/* reset line drawing style (in case previous user didn't reset) */
setlinestyle(0);
/* turn on smooth lines (i.e. anti-aliasing) */
glEnable(GL_LINE_SMOOTH);
/* turn on alpha-blending */
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
/* loop over layers, drawing them */
for (gpl= gpd->layers.first; gpl; gpl= gpl->next) {
bGPDframe *gpf;
short debug = (gpl->flag & GP_LAYER_DRAWDEBUG) ? 1 : 0;
short lthick= gpl->thickness;
float color[4], tcolor[4];
/* don't draw layer if hidden */
if (gpl->flag & GP_LAYER_HIDE)
continue;
/* if layer is active one, store pointer to it */
// if (gpl->flag & GP_LAYER_ACTIVE)
// actlay= gpl;
/* get frame to draw */
gpf= gpencil_layer_getframe(gpl, cfra, 0);
if (gpf == NULL)
continue;
/* set color, stroke thickness, and point size */
glLineWidth(lthick);
QUATCOPY(color, gpl->color); // just for copying 4 array elements
QUATCOPY(tcolor, gpl->color); // additional copy of color (for ghosting)
glColor4f(color[0], color[1], color[2], color[3]);
glPointSize((float)(gpl->thickness + 2));
/* draw 'onionskins' (frame left + right) */
if (gpl->flag & GP_LAYER_ONIONSKIN) {
/* drawing method - only immediately surrounding (gstep = 0), or within a frame range on either side (gstep > 0)*/
if (gpl->gstep) {
bGPDframe *gf;
float fac;
/* draw previous frames first */
for (gf=gpf->prev; gf; gf=gf->prev) {
/* check if frame is drawable */
if ((gpf->framenum - gf->framenum) <= gpl->gstep) {
/* alpha decreases with distance from curframe index */
fac= (float)(gpf->framenum - gf->framenum) / (float)gpl->gstep;
tcolor[3] = color[3] - fac;
gp_draw_strokes(gf, offsx, offsy, winx, winy, dflag, debug, lthick, tcolor);
}
else
break;
}
/* now draw next frames */
for (gf= gpf->next; gf; gf=gf->next) {
/* check if frame is drawable */
if ((gf->framenum - gpf->framenum) <= gpl->gstep) {
/* alpha decreases with distance from curframe index */
fac= (float)(gf->framenum - gpf->framenum) / (float)gpl->gstep;
tcolor[3] = color[3] - fac;
gp_draw_strokes(gf, offsx, offsy, winx, winy, dflag, debug, lthick, tcolor);
}
else
break;
}
/* restore alpha */
glColor4f(color[0], color[1], color[2], color[3]);
}
else {
/* draw the strokes for the ghost frames (at half of the alpha set by user) */
if (gpf->prev) {
tcolor[3] = (color[3] / 7);
gp_draw_strokes(gpf->prev, offsx, offsy, winx, winy, dflag, debug, lthick, tcolor);
}
if (gpf->next) {
tcolor[3] = (color[3] / 4);
gp_draw_strokes(gpf->next, offsx, offsy, winx, winy, dflag, debug, lthick, tcolor);
}
/* restore alpha */
glColor4f(color[0], color[1], color[2], color[3]);
}
}
/* draw the strokes already in active frame */
tcolor[3]= color[3];
gp_draw_strokes(gpf, offsx, offsy, winx, winy, dflag, debug, lthick, tcolor);
/* Check if may need to draw the active stroke cache, only if this layer is the active layer
* that is being edited. (Stroke buffer is currently stored in gp-data)
*/
if ((G.f & G_GREASEPENCIL) && (gpl->flag & GP_LAYER_ACTIVE) &&
(gpf->flag & GP_FRAME_PAINT))
{
/* Buffer stroke needs to be drawn with a different linestyle to help differentiate them from normal strokes. */
gp_draw_stroke_buffer(gpd->sbuffer, gpd->sbuffer_size, lthick, dflag, gpd->sbuffer_sflag);
}
}
/* turn off alpha blending, then smooth lines */
glDisable(GL_BLEND); // alpha blending
glDisable(GL_LINE_SMOOTH); // smooth lines
/* restore initial gl conditions */
glLineWidth(1.0);
glPointSize(1.0);
glColor4f(0, 0, 0, 1);
}
/* ----- Grease Pencil Sketches Drawing API ------ */
// ............................
// XXX
// We need to review the calls below, since they may be/are not that suitable for
// the new ways that we intend to be drawing data...
// ............................
/* draw grease-pencil sketches to specified 2d-view that uses ibuf corrections */
void draw_gpencil_2dimage (bContext *C, ImBuf *ibuf)
{
ScrArea *sa= CTX_wm_area(C);
ARegion *ar= CTX_wm_region(C);
Scene *scene= CTX_data_scene(C);
bGPdata *gpd;
int offsx, offsy, sizex, sizey;
int dflag = GP_DRAWDATA_NOSTATUS;
/* check that we have grease-pencil stuff to draw */
if (ELEM(NULL, sa, ibuf)) return;
gpd= gpencil_data_get_active(C); // XXX
if (gpd == NULL) return;
/* calculate rect */
switch (sa->spacetype) {
case SPACE_IMAGE: /* image */
{
/* just draw using standard scaling (settings here are currently ignored anyways) */
// FIXME: the opengl poly-strokes don't draw at right thickness when done this way, so disabled
offsx= 0;
offsy= 0;
sizex= ar->winx;
sizey= ar->winy;
wmOrtho2(ar->v2d.cur.xmin, ar->v2d.cur.xmax, ar->v2d.cur.ymin, ar->v2d.cur.ymax);
dflag |= GP_DRAWDATA_ONLYV2D|GP_DRAWDATA_IEDITHACK;
}
break;
case SPACE_SEQ: /* sequence */
{
SpaceSeq *sseq= (SpaceSeq *)sa->spacedata.first;
float zoom, zoomx, zoomy;
/* calculate accessory values */
zoom= (float)(SEQ_ZOOM_FAC(sseq->zoom));
if (sseq->mainb == SEQ_DRAW_IMG_IMBUF) {
/* XXX sequencer zoom should store it? */
zoomx = zoom; // * (G.scene->r.xasp / G.scene->r.yasp);
zoomy = zoom;
}
else
zoomx = zoomy = zoom;
/* calculate transforms (Note: we use ibuf here, as we have it) */
sizex= (int)(zoomx * ibuf->x);
sizey= (int)(zoomy * ibuf->y);
offsx= (int)( (ar->winx-sizex)/2 + sseq->xof );
offsy= (int)( (ar->winy-sizey)/2 + sseq->yof );
dflag |= GP_DRAWDATA_ONLYI2D;
}
break;
default: /* for spacetype not yet handled */
offsx= 0;
offsy= 0;
sizex= ar->winx;
sizey= ar->winy;
dflag |= GP_DRAWDATA_ONLYI2D;
break;
}
/* draw it! */
gp_draw_data(gpd, offsx, offsy, sizex, sizey, CFRA, dflag);
}
/* draw grease-pencil sketches to specified 2d-view assuming that matrices are already set correctly
* Note: this gets called twice - first time with onlyv2d=1 to draw 'canvas' strokes, second time with onlyv2d=0 for screen-aligned strokes
*/
void draw_gpencil_view2d (bContext *C, short onlyv2d)
{
ScrArea *sa= CTX_wm_area(C);
ARegion *ar= CTX_wm_region(C);
Scene *scene= CTX_data_scene(C);
bGPdata *gpd;
int dflag = 0;
/* check that we have grease-pencil stuff to draw */
if (sa == NULL) return;
gpd= gpencil_data_get_active(C); // XXX
if (gpd == NULL) return;
/* special hack for Image Editor */
// FIXME: the opengl poly-strokes don't draw at right thickness when done this way, so disabled
if (sa->spacetype == SPACE_IMAGE)
dflag |= GP_DRAWDATA_IEDITHACK;
/* draw it! */
if (onlyv2d) dflag |= (GP_DRAWDATA_ONLYV2D|GP_DRAWDATA_NOSTATUS);
gp_draw_data(gpd, 0, 0, ar->winx, ar->winy, CFRA, dflag);
}
/* draw grease-pencil sketches to specified 3d-view assuming that matrices are already set correctly
* Note: this gets called twice - first time with only3d=1 to draw 3d-strokes, second time with only3d=0 for screen-aligned strokes
*/
void draw_gpencil_view3d_ext (Scene *scene, View3D *v3d, ARegion *ar, short only3d)
{
bGPdata *gpd;
int dflag = 0;
rcti rect;
RegionView3D *rv3d= ar->regiondata;
/* check that we have grease-pencil stuff to draw */
gpd= gpencil_data_get_active_v3d(scene); // XXX
if(gpd == NULL) return;
/* when rendering to the offscreen buffer we dont want to
* deal with the camera border, otherwise map the coords to the camera border. */
if(rv3d->persp == RV3D_CAMOB && !(G.f & G_RENDER_OGL)) {
rctf rectf;
view3d_calc_camera_border(scene, ar, rv3d, v3d, &rectf, -1); /* negative shift */
BLI_copy_rcti_rctf(&rect, &rectf);
}
else {
rect.xmin= 0;
rect.ymin= 0;
rect.xmax= ar->winx;
rect.ymax= ar->winy;
}
/* draw it! */
if (only3d) dflag |= (GP_DRAWDATA_ONLY3D|GP_DRAWDATA_NOSTATUS);
gp_draw_data(gpd, rect.xmin, rect.ymin, rect.xmax, rect.ymax, CFRA, dflag);
}
void draw_gpencil_view3d (bContext *C, short only3d)
{
ARegion *ar= CTX_wm_region(C);
View3D *v3d= CTX_wm_view3d(C);
Scene *scene= CTX_data_scene(C);
draw_gpencil_view3d_ext(scene, v3d, ar, only3d);
}
/* ************************************************** */
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