/**
 * @file config.h
 * @brief Configuration constants for ASCII 3D Renderer
 * @author ASCII3D Project
 * @version 2.0.0
 */

#ifndef ASCII3D_CONFIG_H
#define ASCII3D_CONFIG_H

#ifdef __cplusplus
extern "C" {
#endif

/*============================================================================
 * SCREEN CONFIGURATION
 *============================================================================*/
#define SCREEN_WIDTH        120
#define SCREEN_HEIGHT       45

/*============================================================================
 * RENDERING QUALITY SETTINGS
 *============================================================================*/

/* Depth buffer initialization value */
#define DEPTH_BUFFER_INIT   1e9f

/* Character extrusion depth (3D thickness) */
#define EXTRUSION_DEPTH     4.0f

/* Base character scale */
#define CHAR_SCALE          2.0f

/* Camera settings */
#define CAMERA_DISTANCE     30.0f
#define FIELD_OF_VIEW       50.0f
#define NEAR_PLANE          0.1f
#define FAR_PLANE           100.0f

/* Sub-pixel sampling for anti-aliasing (NxN samples per pixel) */
#define AA_SAMPLES          2

/* Voxel rendering step (smaller = higher quality, slower) */
#define VOXEL_STEP          0.15f

/* Surface smoothing iterations */
#define SMOOTH_PASSES       1

/*============================================================================
 * ANIMATION PARAMETERS
 *============================================================================*/
#define TARGET_FPS          60
#define FRAME_TIME_US       (1000000 / TARGET_FPS)

/*============================================================================
 * FONT CONFIGURATION
 *============================================================================*/

/* Standard 5x7 font */
#define FONT_WIDTH          5
#define FONT_HEIGHT         7
#define FONT_CHAR_SPACING   2

/*============================================================================
 * LIGHTING CONFIGURATION
 *============================================================================*/

/* Ambient light intensity (0.0 - 1.0) */
#define AMBIENT_INTENSITY   0.15f

/* Diffuse light intensity */
#define DIFFUSE_INTENSITY   0.70f

/* Specular light intensity */
#define SPECULAR_INTENSITY  0.40f

/* Specular shininess exponent */
#define SPECULAR_POWER      32.0f

/* Number of light sources */
#define MAX_LIGHTS          3

/*============================================================================
 * ASCII SHADING PALETTES
 *============================================================================*/

/* Standard gradient (10 levels) */
#define SHADE_CHARS_STANDARD    " .:-=+*#%@"
#define SHADE_COUNT_STANDARD    10

/* Extended gradient (16 levels) - more detail */
#define SHADE_CHARS_EXTENDED    " .'`^\",:;Il!i><~+_-?][}{1)(|/tfjrxnuvczXYUJCLQ0OZmwqpdbkhao*#MW&8%B@$"
#define SHADE_COUNT_EXTENDED    70

/* Block characters for solid look */
#define SHADE_CHARS_BLOCK       " ░▒▓█"
#define SHADE_COUNT_BLOCK       5

/* Minimal gradient */
#define SHADE_CHARS_MINIMAL     " .:+#@"
#define SHADE_COUNT_MINIMAL     6

/* Default palette */
#define SHADE_CHARS             SHADE_CHARS_EXTENDED
#define SHADE_COUNT             SHADE_COUNT_EXTENDED

/*============================================================================
 * RENDER MODES
 *============================================================================*/
typedef enum RenderMode {
    RENDER_MODE_SOLID = 0,      /* Filled solid rendering */
    RENDER_MODE_WIREFRAME,      /* Edge-only wireframe */
    RENDER_MODE_POINTS,         /* Point cloud */
    RENDER_MODE_SHADED,         /* Full Phong shading */
    RENDER_MODE_COUNT
} RenderMode;

/*============================================================================
 * COLOR MODES
 *============================================================================*/
typedef enum ColorMode {
    COLOR_MODE_MONO = 0,        /* Monochrome ASCII */
    COLOR_MODE_ANSI_16,         /* 16-color ANSI */
    COLOR_MODE_ANSI_256,        /* 256-color ANSI */
    COLOR_MODE_TRUECOLOR,       /* 24-bit RGB */
    COLOR_MODE_COUNT
} ColorMode;

/*============================================================================
 * ANSI COLOR CODES
 *============================================================================*/
#define ANSI_RESET      "\033[0m"
#define ANSI_BOLD       "\033[1m"
#define ANSI_DIM        "\033[2m"

/* Foreground colors */
#define ANSI_FG_BLACK   "\033[30m"
#define ANSI_FG_RED     "\033[31m"
#define ANSI_FG_GREEN   "\033[32m"
#define ANSI_FG_YELLOW  "\033[33m"
#define ANSI_FG_BLUE    "\033[34m"
#define ANSI_FG_MAGENTA "\033[35m"
#define ANSI_FG_CYAN    "\033[36m"
#define ANSI_FG_WHITE   "\033[37m"

/* Bright foreground colors */
#define ANSI_FG_BRIGHT_BLACK   "\033[90m"
#define ANSI_FG_BRIGHT_RED     "\033[91m"
#define ANSI_FG_BRIGHT_GREEN   "\033[92m"
#define ANSI_FG_BRIGHT_YELLOW  "\033[93m"
#define ANSI_FG_BRIGHT_BLUE    "\033[94m"
#define ANSI_FG_BRIGHT_MAGENTA "\033[95m"
#define ANSI_FG_BRIGHT_CYAN    "\033[96m"
#define ANSI_FG_BRIGHT_WHITE   "\033[97m"

/* Background colors */
#define ANSI_BG_BLACK   "\033[40m"
#define ANSI_BG_RED     "\033[41m"
#define ANSI_BG_GREEN   "\033[42m"
#define ANSI_BG_YELLOW  "\033[43m"
#define ANSI_BG_BLUE    "\033[44m"
#define ANSI_BG_MAGENTA "\033[45m"
#define ANSI_BG_CYAN    "\033[46m"
#define ANSI_BG_WHITE   "\033[47m"

#ifdef __cplusplus
}
#endif

#endif /* ASCII3D_CONFIG_H */