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Diffstat (limited to 'source/blender/src/drawgpencil.c')
| -rw-r--r-- | source/blender/src/drawgpencil.c | 1045 |
1 files changed, 0 insertions, 1045 deletions
diff --git a/source/blender/src/drawgpencil.c b/source/blender/src/drawgpencil.c deleted file mode 100644 index 1b3d869b2f8..00000000000 --- a/source/blender/src/drawgpencil.c +++ /dev/null @@ -1,1045 +0,0 @@ -/** - * $Id$ - * - * ***** 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 ***** - */ - -#include <stdio.h> -#include <string.h> -#include <stdlib.h> -#include <stddef.h> -#include <math.h> - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif - -#include "MEM_guardedalloc.h" - -#include "IMB_imbuf.h" -#include "IMB_imbuf_types.h" - -#include "BMF_Api.h" - -#include "BLI_arithb.h" -#include "BLI_blenlib.h" - -#include "DNA_listBase.h" -#include "DNA_gpencil_types.h" -#include "DNA_scene_types.h" -#include "DNA_screen_types.h" -#include "DNA_space_types.h" -#include "DNA_userdef_types.h" -#include "DNA_view3d_types.h" - -#include "BKE_global.h" -#include "BKE_utildefines.h" -#include "BKE_blender.h" - -#include "BIF_gl.h" -#include "BIF_glutil.h" -#include "BIF_butspace.h" -#include "BIF_drawseq.h" -#include "BIF_graphics.h" -#include "BIF_interface.h" -#include "BIF_mywindow.h" -#include "BIF_resources.h" -#include "BIF_space.h" -#include "BIF_screen.h" -#include "BIF_toolbox.h" -#include "BIF_toets.h" - -#include "BDR_gpencil.h" -#include "BIF_drawgpencil.h" - -#include "BSE_drawipo.h" -#include "BSE_headerbuttons.h" -#include "BSE_view.h" - -#include "blendef.h" -#include "butspace.h" - -#include "PIL_time.h" -#include "mydevice.h" - -/* ************************************************** */ -/* GREASE PENCIL PANEL-UI DRAWING */ - -/* Every space which implements Grease-Pencil functionality should have a panel - * for the settings. All of the space-dependent parts should be coded in the panel - * code for that space, but the rest is all handled by generic panel here. - */ - -/* ------- Callbacks ----------- */ -/* These are just 'dummy wrappers' around gpencil api calls */ - -/* make layer active one after being clicked on */ -void gp_ui_activelayer_cb (void *gpd, void *gpl) -{ - gpencil_layer_setactive(gpd, gpl); - - scrarea_queue_winredraw(curarea); - allqueue(REDRAWACTION, 0); -} - -/* rename layer and set active */ -void gp_ui_renamelayer_cb (void *gpd_arg, void *gpl_arg) -{ - bGPdata *gpd= (bGPdata *)gpd_arg; - bGPDlayer *gpl= (bGPDlayer *)gpl_arg; - - BLI_uniquename(&gpd->layers, gpl, "GP_Layer", offsetof(bGPDlayer, info[0]), 128); - gpencil_layer_setactive(gpd, gpl); - - scrarea_queue_winredraw(curarea); - allqueue(REDRAWACTION, 0); -} - -/* add a new layer */ -void gp_ui_addlayer_cb (void *gpd, void *dummy) -{ - gpencil_layer_addnew(gpd); - - scrarea_queue_winredraw(curarea); - allqueue(REDRAWACTION, 0); -} - -/* delete active layer */ -void gp_ui_dellayer_cb (void *gpd, void *dummy) -{ - gpencil_layer_delactive(gpd); - - scrarea_queue_winredraw(curarea); - allqueue(REDRAWACTION, 0); -} - -/* delete last stroke of active layer */ -void gp_ui_delstroke_cb (void *gpd, void *gpl) -{ - bGPDframe *gpf= gpencil_layer_getframe(gpl, CFRA, 0); - - gpencil_layer_setactive(gpd, gpl); - gpencil_frame_delete_laststroke(gpf); - - scrarea_queue_winredraw(curarea); -} - -/* delete active frame of active layer */ -void gp_ui_delframe_cb (void *gpd, void *gpl) -{ - bGPDframe *gpf= gpencil_layer_getframe(gpl, CFRA, 0); - - gpencil_layer_setactive(gpd, gpl); - gpencil_layer_delframe(gpl, gpf); - - scrarea_queue_winredraw(curarea); - allqueue(REDRAWACTION, 0); -} - -/* convert the active layer to geometry */ -void gp_ui_convertlayer_cb (void *gpd, void *gpl) -{ - gpencil_layer_setactive(gpd, gpl); - gpencil_convert_menu(); - - scrarea_queue_winredraw(curarea); -} - -/* ------- Drawing Code ------- */ - -/* draw the controls for a given layer */ -static void gp_drawui_layer (uiBlock *block, bGPdata *gpd, bGPDlayer *gpl, short *xco, short *yco) -{ - uiBut *but; - short active= (gpl->flag & GP_LAYER_ACTIVE); - short width= 314; - short height; - int rb_col; - - /* unless button has own callback, it adds this callback to button */ - uiBlockSetFunc(block, gp_ui_activelayer_cb, gpd, gpl); - - /* draw header */ - { - uiBlockSetEmboss(block, UI_EMBOSSN); - - /* rounded header */ - if (active) uiBlockSetCol(block, TH_BUT_ACTION); - rb_col= (active)?-20:20; - uiDefBut(block, ROUNDBOX, B_REDR, "", *xco-8, *yco-2, width, 24, NULL, 5.0, 0.0, 15.0, (float)(rb_col-20), ""); - if (active) uiBlockSetCol(block, TH_AUTO); - - /* lock toggle */ - uiDefIconButBitI(block, ICONTOG, GP_LAYER_LOCKED, B_REDR, ICON_UNLOCKED, *xco-7, *yco-1, 20, 20, &gpl->flag, 0.0, 0.0, 0, 0, "Layer cannot be modified"); - } - - /* when layer is locked or hidden, only draw header */ - if (gpl->flag & (GP_LAYER_LOCKED|GP_LAYER_HIDE)) { - char name[256]; /* gpl->info is 128, but we need space for 'locked/hidden' as well */ - - height= 0; - - /* visibility button (only if hidden but not locked!) */ - if ((gpl->flag & GP_LAYER_HIDE) && !(gpl->flag & GP_LAYER_LOCKED)) - uiDefIconButBitI(block, ICONTOG, GP_LAYER_HIDE, B_REDR, ICON_RESTRICT_VIEW_OFF, *xco+12, *yco-1, 20, 20, &gpl->flag, 0.0, 0.0, 0, 0, "Visibility of layer"); - - /* name */ - if (gpl->flag & GP_LAYER_HIDE) - sprintf(name, "%s (Hidden)", gpl->info); - else - sprintf(name, "%s (Locked)", gpl->info); - uiDefBut(block, LABEL, 1, name, *xco+35, *yco, 240, 20, NULL, 0.0, 0.0, 0, 0, "Short description of what this layer is for (optional)"); - - /* delete button (only if hidden but not locked!) */ - if ((gpl->flag & GP_LAYER_HIDE) & !(gpl->flag & GP_LAYER_LOCKED)) { - but= uiDefIconBut(block, BUT, B_REDR, ICON_X, *xco+(width-30), *yco, 19, 19, NULL, 0.0, 0.0, 0.0, 0.0, "Delete layer"); - uiButSetFunc(but, gp_ui_dellayer_cb, gpd, NULL); - } - uiBlockSetEmboss(block, UI_EMBOSS); - } - else { - height= 97; - - /* draw rest of header */ - { - /* visibility button */ - uiDefIconButBitI(block, ICONTOG, GP_LAYER_HIDE, B_REDR, ICON_RESTRICT_VIEW_OFF, *xco+12, *yco-1, 20, 20, &gpl->flag, 0.0, 0.0, 0, 0, "Visibility of layer"); - - uiBlockSetEmboss(block, UI_EMBOSS); - - /* name */ - but= uiDefButC(block, TEX, B_REDR, "Info:", *xco+36, *yco, 240, 19, gpl->info, 0, 127, 0, 0, "Short description of what this layer is for (optional)"); - uiButSetFunc(but, gp_ui_renamelayer_cb, gpd, gpl); - - /* delete 'button' */ - uiBlockSetEmboss(block, UI_EMBOSSN); - - but= uiDefIconBut(block, BUT, B_REDR, ICON_X, *xco+(width-30), *yco, 19, 19, NULL, 0.0, 0.0, 0.0, 0.0, "Delete layer"); - uiButSetFunc(but, gp_ui_dellayer_cb, gpd, NULL); - - uiBlockSetEmboss(block, UI_EMBOSS); - } - - /* draw backdrop */ - if (active) uiBlockSetCol(block, TH_BUT_ACTION); - uiDefBut(block, ROUNDBOX, B_DIFF, "", *xco-8, *yco-height, width, height-1, NULL, 5.0, 0.0, 12.0, (float)rb_col, ""); - if (active) uiBlockSetCol(block, TH_AUTO); - - /* draw settings */ - { - /* color */ - uiBlockBeginAlign(block); - uiDefButF(block, COL, B_REDR, "", *xco, *yco-26, 150, 19, gpl->color, 0, 0, 0, 0, "Color to use for all strokes on this Grease Pencil Layer"); - uiDefButF(block, NUMSLI, B_REDR, "Opacity: ", *xco,*yco-45,150,19, &gpl->color[3], 0.3f, 1.0f, 0, 0, "Visibility of stroke (0.3 to 1.0)"); - uiBlockEndAlign(block); - - /* stroke thickness */ - uiDefButS(block, NUMSLI, B_REDR, "Thickness:", *xco, *yco-75, 150, 20, &gpl->thickness, 1, 10, 0, 0, "Thickness of strokes (in pixels)"); - - /* debugging options */ - if (G.f & G_DEBUG) { - uiDefButBitI(block, TOG, GP_LAYER_DRAWDEBUG, B_REDR, "Show Points", *xco, *yco-95, 150, 20, &gpl->flag, 0, 0, 0, 0, "Show points which form the strokes"); - } - - /* onion-skinning */ - uiBlockBeginAlign(block); - uiDefButBitI(block, TOG, GP_LAYER_ONIONSKIN, B_REDR, "Onion-Skin", *xco+160, *yco-26, 140, 20, &gpl->flag, 0, 0, 0, 0, "Ghost frames on either side of frame"); - uiDefButS(block, NUMSLI, B_REDR, "GStep:", *xco+160, *yco-46, 140, 20, &gpl->gstep, 0, 120, 0, 0, "Max number of frames on either side of active frame to show (0 = just 'first' available sketch on either side)"); - uiBlockEndAlign(block); - - /* options */ - uiBlockBeginAlign(block); - if (curarea->spacetype == SPACE_VIEW3D) { - but= uiDefBut(block, BUT, B_REDR, "Convert to...", *xco+160, *yco-75, 140, 20, NULL, 0, 0, 0, 0, "Converts this layer's strokes to geometry (Hotkey = Alt-Shift-C)"); - uiButSetFunc(but, gp_ui_convertlayer_cb, gpd, gpl); - } - else { - but= uiDefBut(block, BUT, B_REDR, "Del Active Frame", *xco+160, *yco-75, 140, 20, NULL, 0, 0, 0, 0, "Erases the the active frame for this layer (Hotkey = Alt-XKEY/DEL)"); - uiButSetFunc(but, gp_ui_delframe_cb, gpd, gpl); - } - - but= uiDefBut(block, BUT, B_REDR, "Del Last Stroke", *xco+160, *yco-95, 140, 20, NULL, 0, 0, 0, 0, "Erases the last stroke from the active frame (Hotkey = Alt-XKEY/DEL)"); - uiButSetFunc(but, gp_ui_delstroke_cb, gpd, gpl); - uiBlockEndAlign(block); - } - } - - /* adjust height for new to start */ - (*yco) -= (height + 27); -} - -/* Draw the contents for a grease-pencil panel. This assumes several things: - * - that panel has been created, is 318 x 204. max yco is 225 - * - that a toggle for turning on/off gpencil drawing is 150 x 20, starting from (10,225) - * which is basically the top left-hand corner - * It will return the amount of extra space to extend the panel by - */ -short draw_gpencil_panel (uiBlock *block, bGPdata *gpd, ScrArea *sa) -{ - uiBut *but; - bGPDlayer *gpl; - short xco= 10, yco= 170; - - /* draw gpd settings first */ - { - /* add new layer buttons */ - but= uiDefBut(block, BUT, B_REDR, "Add New Layer", 10,205,150,20, 0, 0, 0, 0, 0, "Adds a new Grease Pencil Layer"); - uiButSetFunc(but, gp_ui_addlayer_cb, gpd, NULL); - - - /* show override lmb-clicks button + painting lock */ - uiBlockBeginAlign(block); - if ((gpd->flag & GP_DATA_EDITPAINT)==0) { - uiDefButBitI(block, TOG, GP_DATA_EDITPAINT, B_REDR, "Draw Mode", 170, 225, 130, 20, &gpd->flag, 0, 0, 0, 0, "Interpret click-drag as new strokes"); - - uiBlockSetCol(block, TH_BUT_SETTING); - uiDefIconButBitI(block, ICONTOG, GP_DATA_LMBPLOCK, B_REDR, ICON_UNLOCKED, 300, 225, 20, 20, &gpd->flag, 0.0, 0.0, 0, 0, "Painting cannot occur with Shift-LMB (when making selections)"); - uiBlockSetCol(block, TH_AUTO); - } - else - uiDefButBitI(block, TOG, GP_DATA_EDITPAINT, B_REDR, "Draw Mode", 170, 225, 150, 20, &gpd->flag, 0, 0, 0, 0, "Interpret click-drag as new strokes"); - uiBlockEndAlign(block); - - /* 'view align' button (naming depends on context) */ - if (sa->spacetype == SPACE_VIEW3D) - uiDefButBitI(block, TOG, GP_DATA_VIEWALIGN, B_REDR, "Sketch in 3D", 170, 205, 150, 20, &gpd->flag, 0, 0, 0, 0, "New strokes are added in 3D-space"); - else - uiDefButBitI(block, TOG, GP_DATA_VIEWALIGN, B_REDR, "Stick to View", 170, 205, 150, 20, &gpd->flag, 0, 0, 0, 0, "New strokes are added on 2d-canvas"); - } - - /* draw for each layer */ - for (gpl= gpd->layers.first; gpl; gpl= gpl->next) { - gp_drawui_layer(block, gpd, gpl, &xco, &yco); - } - - /* return new height if necessary */ - return (yco < 0) ? (204 - yco) : 204; -} - -/* ************************************************** */ -/* 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 */ -}; - -/* 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 (fabs(pt->pressure - oldpressure) > 0.2f) { - glEnd(); - glLineWidth(pt->pressure * thickness); - glBegin(GL_LINE_STRIP); - - 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 { - 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 / 1000 * winx); - co[1]= (points->y / 1000 * winy); - } - - /* 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) || - ((curarea->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 dflag, short sflag, short debug, int winx, int winy) -{ - 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 (fabs(pt->pressure - oldpressure) > 0.2f) { - glEnd(); - glLineWidth(pt->pressure * thickness); - glBegin(GL_LINE_STRIP); - - 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, short dflag, short sflag, - short debug, int offsx, int offsy, int winx, int winy) -{ - /* 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) || - ((curarea->spacetype==SPACE_IMAGE) && (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 / 1000 * winx); - const float y= (pt->y / 1000 * winy); - - 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 / 1000 * winx); - s0[1]= (pt1->y / 1000 * winy); - s1[0]= (pt2->x / 1000 * winx); - s1[1]= (pt2->y / 1000 * winy); - } - - /* calculate gradient and normal - 'angle'=(ny/nx) */ - m1[1]= s1[1] - s0[1]; - m1[0]= s1[0] - s0[0]; - Normalize2(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; - Normalize2(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= Vec2Length(mt); - dfac= pthick - (athick * 2); - if ( ((athick * 2) < pthick) && (IS_EQ(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 */ - Vec2Copyf(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 / 1000 * winx); - const float y= (float)(pt->y / 1000 * winy); - - 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 == 0) || (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, dflag, gps->flag, debug, winx, winy); - 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 dflag) -{ - bGPDlayer *gpl, *actlay=NULL; - - /* 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 - - /* show info for debugging the status of gpencil */ - if ( ((dflag & GP_DRAWDATA_NOSTATUS)==0) && (gpd->flag & GP_DATA_DISPINFO) ) { - char printable[256]; - short xmax; - - /* get text to display */ - if (actlay) { - if (gpd->flag & GP_DATA_EDITPAINT) - BIF_ThemeColor(TH_BONE_POSE); // should be blue-ish - else if (actlay->actframe == NULL) - BIF_ThemeColor(TH_REDALERT); - else if (actlay->actframe->framenum == CFRA) - BIF_ThemeColor(TH_VERTEX_SELECT); // should be yellow - else - BIF_ThemeColor(TH_TEXT_HI); - - if (actlay->actframe) { - sprintf(printable, "GPencil: Layer ('%s'), Frame (%d)%s", - actlay->info, actlay->actframe->framenum, - ((gpd->flag & GP_DATA_EDITPAINT)?" , Draw Mode On":"") ); - } - else { - sprintf(printable, "GPencil: Layer ('%s'), Frame <None>%s", - actlay->info, ((gpd->flag & GP_DATA_EDITPAINT)?" , Draw Mode On":"") ); - } - } - else { - BIF_ThemeColor(TH_REDALERT); - sprintf(printable, "GPencil: Layer <None>"); - } - xmax= GetButStringLength(printable); - - /* only draw it if view is wide enough (assume padding of 20 is enough for now) */ - if (winx > (xmax + 20)) { - glRasterPos2i(winx-xmax, winy-20); - BMF_DrawString(G.fonts, printable); - } - } - - /* restore initial gl conditions */ - glLineWidth(1.0); - glPointSize(1.0); - glColor4f(0, 0, 0, 1); -} - -/* ----- Grease Pencil Sketches Drawing API ------ */ - -/* draw grease-pencil sketches to specified 2d-view that uses ibuf corrections */ -void draw_gpencil_2dimage (ScrArea *sa, ImBuf *ibuf) -{ - 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_getactive(sa); - if (gpd == NULL) return; - - /* calculate rect */ - switch (sa->spacetype) { - case SPACE_IMAGE: /* image */ - { - SpaceImage *sima= (SpaceImage *)sa->spacedata.first; - - /* 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= sa->winx; - sizey= sa->winy; - - myortho2(sima->v2d.cur.xmin, sima->v2d.cur.xmax, sima->v2d.cur.ymin, sima->v2d.cur.ymax); - - dflag |= GP_DRAWDATA_ONLYV2D; - } - 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) { - zoomx = zoom * ((float)G.scene->r.xasp / (float)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)( (sa->winx-sizex)/2 + sseq->xof ); - offsy= (int)( (sa->winy-sizey)/2 + sseq->yof ); - - dflag |= GP_DRAWDATA_ONLYI2D; - } - break; - - default: /* for spacetype not yet handled */ - offsx= 0; - offsy= 0; - sizex= sa->winx; - sizey= sa->winy; - - dflag |= GP_DRAWDATA_ONLYI2D; - break; - } - - - /* draw it! */ - gp_draw_data(gpd, offsx, offsy, sizex, sizey, 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_2dview (ScrArea *sa, short onlyv2d) -{ - bGPdata *gpd; - int dflag = 0; - - /* check that we have grease-pencil stuff to draw */ - if (sa == NULL) return; - gpd= gpencil_data_getactive(sa); - if (gpd == NULL) return; - - /* draw it! */ - if (onlyv2d) dflag |= (GP_DRAWDATA_ONLYV2D|GP_DRAWDATA_NOSTATUS); - gp_draw_data(gpd, 0, 0, sa->winx, sa->winy, 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_3dview (ScrArea *sa, short only3d) -{ - bGPdata *gpd; - int dflag = 0; - - /* check that we have grease-pencil stuff to draw */ - gpd= gpencil_data_getactive(sa); - if (gpd == NULL) return; - - /* draw it! */ - if (only3d) dflag |= (GP_DRAWDATA_ONLY3D|GP_DRAWDATA_NOSTATUS); - gp_draw_data(gpd, 0, 0, sa->winx, sa->winy, dflag); -} - -/* draw grease-pencil sketches to opengl render window assuming that matrices are already set correctly */ -void draw_gpencil_oglrender (View3D *v3d, int winx, int winy) -{ - bGPdata *gpd; - - /* assume gpencil data comes from v3d */ - if (v3d == NULL) return; - gpd= v3d->gpd; - if (gpd == NULL) return; - - /* pass 1: draw 3d-strokes ------------ > */ - gp_draw_data(gpd, 0, 0, winx, winy, (GP_DRAWDATA_NOSTATUS|GP_DRAWDATA_ONLY3D)); - - /* pass 2: draw 2d-strokes ------------ > */ - /* adjust view matrices */ - myortho2(-0.375f, (float)(winx)-0.375f, -0.375f, (float)(winy)-0.375f); - glLoadIdentity(); - - /* draw it! */ - gp_draw_data(gpd, 0, 0, winx, winy, GP_DRAWDATA_NOSTATUS); -} - -/* ************************************************** */ |