/*
 * libtcod 1.6.0
 * Copyright (c) 2008,2009,2010,2012,2013 Jice & Mingos
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * The name of Jice or Mingos may not be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY JICE AND MINGOS ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL JICE OR MINGOS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 #ifndef _TCOD_HEIGHTMAP_H
 #define _TCOD_HEIGHTMAP_H
 
 typedef struct {
 	int w,h;
 	float *values;
 } TCOD_heightmap_t;
 
 TCODLIB_API TCOD_heightmap_t *TCOD_heightmap_new(int w,int h);
 TCODLIB_API void TCOD_heightmap_delete(TCOD_heightmap_t *hm);
 
 TCODLIB_API float TCOD_heightmap_get_value(const TCOD_heightmap_t *hm, int x, int y);
 TCODLIB_API float TCOD_heightmap_get_interpolated_value(const TCOD_heightmap_t *hm, float x, float y);
 TCODLIB_API void TCOD_heightmap_set_value(TCOD_heightmap_t *hm, int x, int y, float value);
 TCODLIB_API float TCOD_heightmap_get_slope(const TCOD_heightmap_t *hm, int x, int y);
 TCODLIB_API void TCOD_heightmap_get_normal(const TCOD_heightmap_t *hm, float x, float y, float n[3], float waterLevel);
 TCODLIB_API int TCOD_heightmap_count_cells(const TCOD_heightmap_t *hm, float min, float max);
 TCODLIB_API bool TCOD_heightmap_has_land_on_border(const TCOD_heightmap_t *hm, float waterLevel);
 TCODLIB_API void TCOD_heightmap_get_minmax(const TCOD_heightmap_t *hm, float *min, float *max);
 
 TCODLIB_API void TCOD_heightmap_copy(const TCOD_heightmap_t *hm_source,TCOD_heightmap_t *hm_dest);
 TCODLIB_API void TCOD_heightmap_add(TCOD_heightmap_t *hm, float value);
 TCODLIB_API void TCOD_heightmap_scale(TCOD_heightmap_t *hm, float value);
 TCODLIB_API void TCOD_heightmap_clamp(TCOD_heightmap_t *hm, float min, float max);
 TCODLIB_API void TCOD_heightmap_normalize(TCOD_heightmap_t *hm, float min, float max);
 TCODLIB_API void TCOD_heightmap_clear(TCOD_heightmap_t *hm);
 TCODLIB_API void TCOD_heightmap_lerp_hm(const TCOD_heightmap_t *hm1, const TCOD_heightmap_t *hm2, TCOD_heightmap_t *hmres, float coef);
 TCODLIB_API void TCOD_heightmap_add_hm(const TCOD_heightmap_t *hm1, const TCOD_heightmap_t *hm2, TCOD_heightmap_t *hmres);
 TCODLIB_API void TCOD_heightmap_multiply_hm(const TCOD_heightmap_t *hm1, const TCOD_heightmap_t *hm2, TCOD_heightmap_t *hmres);
 
 TCODLIB_API void TCOD_heightmap_add_hill(TCOD_heightmap_t *hm, float hx, float hy, float hradius, float hheight);
 TCODLIB_API void TCOD_heightmap_dig_hill(TCOD_heightmap_t *hm, float hx, float hy, float hradius, float hheight);
 TCODLIB_API void TCOD_heightmap_dig_bezier(TCOD_heightmap_t *hm, int px[4], int py[4], float startRadius, float startDepth, float endRadius, float endDepth);
 TCODLIB_API void TCOD_heightmap_rain_erosion(TCOD_heightmap_t *hm, int nbDrops,float erosionCoef,float sedimentationCoef,TCOD_random_t rnd);
 /* TCODLIB_API void TCOD_heightmap_heat_erosion(TCOD_heightmap_t *hm, int nbPass,float minSlope,float erosionCoef,float sedimentationCoef,TCOD_random_t rnd); */
 TCODLIB_API void TCOD_heightmap_kernel_transform(TCOD_heightmap_t *hm, int kernelsize, const int *dx, const int *dy, const float *weight, float minLevel,float maxLevel);
 TCODLIB_API void TCOD_heightmap_add_voronoi(TCOD_heightmap_t *hm, int nbPoints, int nbCoef, const float *coef,TCOD_random_t rnd);
 TCODLIB_API void TCOD_heightmap_mid_point_displacement(TCOD_heightmap_t *hm, TCOD_random_t rnd, float roughness);
 TCODLIB_API void TCOD_heightmap_add_fbm(TCOD_heightmap_t *hm, TCOD_noise_t noise,float mulx, float muly, float addx, float addy, float octaves, float delta, float scale); 
 TCODLIB_API void TCOD_heightmap_scale_fbm(TCOD_heightmap_t *hm, TCOD_noise_t noise,float mulx, float muly, float addx, float addy, float octaves, float delta, float scale); 
 TCODLIB_API void TCOD_heightmap_islandify(TCOD_heightmap_t *hm, float seaLevel,TCOD_random_t rnd);
 
 #endif