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/* Lighting Effects - A plug-in for GIMP
*
* 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.
*/
#ifndef __LIGHTING_PREVIEW_H__
#define __LIGHTING_PREVIEW_H__
#define PREVIEW_WIDTH 200
#define PREVIEW_HEIGHT 200
typedef struct
{
gint x, y, w, h;
GdkImage *image;
} BackBuffer;
/* Externally visible variables */
extern gint lightx, lighty;
extern BackBuffer backbuf;
extern gdouble *xpostab, *ypostab;
extern gboolean light_hit;
extern gboolean left_button_pressed;
/* Externally visible functions */
void draw_preview_image (gboolean recompute);
void interactive_preview_callback (GtkWidget *widget);
gboolean preview_events (GtkWidget *area,
GdkEvent *event);
void update_light (gint xpos,
gint ypos);
#endif /* __LIGHTING_PREVIEW_H__ */
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