/*****************************************************************************
                     Include file for CS480 Program 2
******************************************************************************
    Author: Stan Sclaroff
            Boston University Computer Science Dept.
            February 15, 1995
******************************************************************************
 Modifications:

******************************************************************************/

typedef struct {
  int n_lines;
  float *points;
  float center[2];
  Colorindex color;
} Polyline;

typedef struct {
  float xmin,ymin,xmax,ymax;
  Colorindex color;
} Frame;

void close_window(),free_frame(),free_polyline();
void activate_sliders(),setup_sliders(),activate_forms();
Device get_event();
long open_window();
Polyline *create_polyline(),*read_polyline_file();
Frame *create_frame();

#define	PI	        3.14159265358979323846

#define NUM_SLIDERS 9

#define ROTATE 0
#define TRANSLATE_X 1
#define TRANSLATE_Y 2
#define SCALE_X 3
#define SCALE_Y 4
#define SHEAR_X 5
#define SHEAR_Y 6
#define BEND_X 7
#define BEND_Y 8

#define SCREEN_WIDTH 512
#define SCREEN_HEIGHT 512
#define FRAME_XMIN 64.0
#define FRAME_XMAX (SCREEN_WIDTH - FRAME_XMIN)
#define FRAME_YMIN 64.0
#define FRAME_YMAX (SCREEN_HEIGHT - FRAME_YMIN)