viewport_8h_source.html

00001 /********************************************************************
00002  * sphore - SPH Opengl Rendering Engine
00003  *
00004  * This file is (or was) part of sphore.
00005  * sphore comes with ABSOLUTELY NO WARRANTY.
00006  * This is free software; and you are welcome to redistribute
00007  * it under the terms of the GNU General Public License
00008  * (see LICENSE file for details) and the provision that
00009  * this notice remains intact. If you modify this file, please
00010  * note section 2a) of the GPLv2 states that:
00011  *
00012  *  a) You must cause the modified files to carry prominent notices
00013  *     stating that you changed the files and the date of any change.
00014  *
00015  * Copyright (C) 2011 James Wetter. All rights reserved.
00016  * Contact: wetter.j@gmail.com
00017  *
00018  ********************************************************************/
00019
00025 #ifndef VIEWPORT_H
00026 #define VIEWPORT_H
00027
00033 typedef struct _viewport viewport_t;
00034
00040 viewport_t *viewport_create (void);
00041
00047 void viewport_destroy (viewport_t * vp);
00048
00059 void
00060 viewport_calculate_pixels (viewport_t * vp,
00061                            int *left_x, int *bottom_y, int *width,
00062                            int *height);
00063
00073 void
00074 viewport_update (viewport_t * vp, int old_width, int old_height,
00075                  int new_width, int new_height);
00076
00077 void
00078 viewport_set (viewport_t * vp, float bottom, float left, float width,
00079               float height);
00080
00081 void viewport_set_keep_ratio (viewport_t * vp, SREbool value);
00082
00083 void
00084 viewport_get (viewport_t * vp, float *x, float *y, float *width,
00085               float *height);
00086 #endif