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/*
* ***** 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) Blender Foundation
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): Lukas Toenne
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/editors/hair/hair_cursor.c
* \ingroup edhair
*/
#include "MEM_guardedalloc.h"
#include "BLI_utildefines.h"
#include "BLI_math.h"
#include "DNA_brush_types.h"
#include "DNA_scene_types.h"
#include "DNA_screen_types.h"
#include "DNA_view3d_types.h"
#include "BKE_brush.h"
#include "BKE_context.h"
#include "WM_api.h"
#include "WM_types.h"
#include "BIF_gl.h"
#include "BIF_glutil.h"
#include "ED_view3d.h"
#include "hair_intern.h"
static void hair_draw_cursor(bContext *C, int x, int y, void *UNUSED(customdata))
{
Scene *scene = CTX_data_scene(C);
UnifiedPaintSettings *ups = &scene->toolsettings->unified_paint_settings;
HairEditSettings *settings = &scene->toolsettings->hair_edit;
Brush *brush = settings->brush;
float final_radius;
float translation[2];
float outline_alpha, *outline_col;
if (!brush)
return;
final_radius = BKE_brush_size_get(scene, brush);
/* set various defaults */
translation[0] = x;
translation[1] = y;
outline_alpha = 0.5;
outline_col = brush->add_col;
/* make lines pretty */
glEnable(GL_BLEND);
glEnable(GL_LINE_SMOOTH);
/* set brush color */
glColor4f(outline_col[0], outline_col[1], outline_col[2], outline_alpha);
/* draw brush outline */
glTranslatef(translation[0], translation[1], 0);
/* draw an inner brush */
if (ups->stroke_active && BKE_brush_use_size_pressure(scene, brush)) {
/* inner at full alpha */
glutil_draw_lined_arc(0.0, M_PI*2.0f, final_radius * ups->size_pressure_value, 40);
/* outer at half alpha */
glColor4f(outline_col[0], outline_col[1], outline_col[2], outline_alpha * 0.5f);
}
glutil_draw_lined_arc(0.0, M_PI*2.0f, final_radius, 40);
glTranslatef(-translation[0], -translation[1], 0);
/* restore GL state */
glDisable(GL_BLEND);
glDisable(GL_LINE_SMOOTH);
}
void hair_edit_cursor_start(bContext *C, int (*poll)(bContext *C))
{
Scene *scene = CTX_data_scene(C);
HairEditSettings *settings = &scene->toolsettings->hair_edit;
if (!settings->paint_cursor)
settings->paint_cursor = WM_paint_cursor_activate(CTX_wm_manager(C), poll, hair_draw_cursor, NULL);
}
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