BIF_glutil.h

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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) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * Contributor(s): Blender Foundation 2002-2008
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#ifndef BIF_GLUTIL_H
#define BIF_GLUTIL_H

struct rcti;
struct rctf;

void fdrawbezier(float vec[4][3]);
void fdrawline(float x1, float y1, float x2, float y2);
void fdrawbox(float x1, float y1, float x2, float y2);
void sdrawline(short x1, short y1, short x2, short y2);
void sdrawtri(short x1, short y1, short x2, short y2);
void sdrawtrifill(short x1, short y1, short x2, short y2);
void sdrawbox(short x1, short y1, short x2, short y2);

void sdrawXORline(int x0, int y0, int x1, int y1);
void sdrawXORline4(int nr, int x0, int y0, int x1, int y1);

void fdrawXORellipse(float xofs, float yofs, float hw, float hh);
void fdrawXORcirc(float xofs, float yofs, float rad);

/* glStipple defines */
extern unsigned char stipple_halftone[128];
extern unsigned char stipple_quarttone[128];
extern unsigned char stipple_diag_stripes_pos[128];
extern unsigned char stipple_diag_stripes_neg[128];

void glutil_draw_lined_arc  (float start, float angle, float radius, int nsegments);

void glutil_draw_filled_arc (float start, float angle, float radius, int nsegments);

int glaGetOneInteger        (int param);

float glaGetOneFloat        (int param);

void glaRasterPosSafe2f     (float x, float y, float known_good_x, float known_good_y);

void glaDrawPixelsSafe      (float x, float y, int img_w, int img_h, int row_w, int format, int type, void *rect);

void glaDrawPixelsTex       (float x, float y, int img_w, int img_h, int format, void *rect);

void glaDrawPixelsTexScaled(float x, float y, int img_w, int img_h, int format, void *rect, float scaleX, float scaleY);

    /* 2D Drawing Assistance */

void glaDefine2DArea        (struct rcti *screen_rect);

typedef struct gla2DDrawInfo gla2DDrawInfo;

gla2DDrawInfo*  glaBegin2DDraw          (struct rcti *screen_rect, struct rctf *world_rect);

void            gla2DDrawTranslatePt    (gla2DDrawInfo *di, float wo_x, float wo_y, int *sc_x_r, int *sc_y_r);

void            gla2DDrawTranslatePtv   (gla2DDrawInfo *di, float world[2], int screen_r[2]);

    /* Restores the previous OpenGL state and free's the auxilary
     * gla data.
     */
void            glaEnd2DDraw            (gla2DDrawInfo *di);

void gla2DGetMap(gla2DDrawInfo *di, struct rctf *rect);
void gla2DSetMap(gla2DDrawInfo *di, struct rctf *rect);


/* use this for platform hacks. glPointSize is solved here */
void bglBegin(int mode);
void bglEnd(void);
int bglPointHack(void);
void bglVertex3fv(float *vec);
void bglVertex3f(float x, float y, float z);
void bglVertex2fv(float *vec);
/* intel gfx cards frontbuffer problem */
void bglFlush(void);
void set_inverted_drawing(int enable);
void setlinestyle(int nr);

/* own working polygon offset */
void bglPolygonOffset(float viewdist, float dist);

/* For caching opengl matrices (gluProject/gluUnProject) */
typedef struct bglMats {
    double modelview[16];
    double projection[16];
    int viewport[4];
} bglMats;
void bgl_get_mats(bglMats *mats);

#endif /* BIF_GLUTIL_H */