include2/coordinates.h

/*
            __
           / /_______________  ____  ___
          / __/ ___/ ___/ __ \/ __ \/ _ \
         / /_(__  ) /__/ /_/ / /_/ /  __/
         \__/____/\___/\____/ .___/\___/
                           /_/
    
    coordinate system and helper functions

    By Michael Stevens

    See license.html for copyright information
*/

#ifndef TSCOPE_COORDINATES_H
#define TSCOPE_COORDINATES_H

#ifdef __cplusplus
extern "C" {
#endif

    int ts_coordinates(int system);
    int ax(float x);            // relative coordinates to absolute
    int ay(float y);
    int sx(int x);              // euclidic coordinates to screen coordinates
    int sy(int y);
    int cx(int x);              // screen coordinates to cartesian
    int cy(int y);

    void ts_agrid();
    void ts_rgrid();

#ifdef __cplusplus
}
#endif
// coordinates
#define SXMAX   SCREEN_W
#define SYMAX   SCREEN_H
#define XMAX    (SCREEN_W/2)
#define YMAX    (SCREEN_H/2)
// coordinate systems
#define CARTESIAN   1
#define STANDARD    2
#endif                          // TSCOPE_COORDINATES_H
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