/**************************************************************
 *
 * ======== kalmia ========
 *
 * a COLLADA importer library
 * copyright (c) 2022 kate swanson (sanine)
 *
 * This is anti-capitalist software, released for free use by individuals and
 * organizations that do not operate by capitalist principles.
 *
 * Permission is hereby granted, free of charge, to any person or
 * organization (the "User") obtaining a copy of this software and associated
 * documentation files (the "Software"), to use, copy, modify, merge,
 * distribute, and/or sell copies of the Software, subject to the following 
 * conditions:
 *
 * 1. The above copyright notice and this permission notice shall be included
 *    in all copies or modified versions of the Software.
 *
 * 2. The User is one of the following:
 *    a. An individual person, laboring for themselves
 *    b. A non-profit organization
 *    c. An educational institution
 *    d. An organization that seeks shared profit for all of its members, and
 *       allows non-members to set the cost of their labor
 *
 * 3. If the User is an organization with owners, then all owners are workers
 *    and all workers are owners with equal equity and/or equal vote.
 *
 * 4. If the User is an organization, then the User is not law enforcement or
 *    military, or working for or under either.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT EXPRESS OR IMPLIED WARRANTY OF
 * ANY KIND, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * https://anticapitalist.software/
 * https://sanine.net
 *
 ****************************************************************/

#ifndef KALMIA_H
#define KALMIA_H

#include <stdbool.h>
#include <stdlib.h>

/* kalmia uses semantic versioning (semver.org) */
#define KALMIA_VERSION_MAJOR 0
#define KALMIA_VERSION_MINOR 0
#define KALMIA_VERSION_PATCH 0


/* determine precision */
#ifdef KALMIA_USE_DOUBLE
typedef double ka_real_t;
#define KA_STR_TO_REAL(nptr, end) strtod(nptr, end)
#else
typedef float ka_real_t;
#define KA_STR_TO_REAL(nptr, end) strtof(nptr, end)
#endif


/**************** geometry types ****************/

struct ka_float_array_t {
	unsigned int count;  /* required */
	char *id;
	unsigned int digits; /* default 6 */
	int magnitude;       /* default 38 */

	ka_real_t *buf;
};

struct ka_param_t {
	char *name;
	char *sid;
	char *type; /* required */
	char *semantic;
};

struct ka_accessor_t {
	unsigned int count;  /* required */
	unsigned int offset; /* default 0 */
	char *source;        /* required */
	unsigned int stride; /* default 1 */

	unsigned int param_count;
	struct ka_param_t *param;
};

struct ka_source_t {
	char *id; /* required */
	char *name;

	struct ka_float_array_t float_array;
	struct ka_accessor_t accessor;
};

struct ka_input_t {
	bool shared;
	unsigned int offset; /* required if shared */
	char *semantic;      /* required */
	char *source;        /* required */
	bool use_set;
	unsigned int set;
};


struct ka_vertices_t {
	char *id; /* required */
	char *name;

	unsigned int input_count;
	struct ka_input_t *input;
};


struct ka_triangles_t {
	char *name;
	unsigned int count; /* required */
	char *material;

	unsigned int input_count;
	struct ka_input_t *input;

	unsigned int p_count;
	unsigned int *p;
};


struct ka_mesh_t {
	unsigned int source_count;
	struct ka_source_t *source;

	struct ka_vertices_t vertices;

	unsigned int triangles_count;
	struct ka_triangles_t *triangles;
};


struct ka_geometry_t {
	char *id;
	char *name;

	struct ka_mesh_t mesh;
};


struct ka_library_geometries_t {
	char *id;
	char *name;

	unsigned int geometry_count;
	struct ka_geometry_t *geometry;
};


/**************** image types ****************/

struct ka_init_from_t {
	char *ref;
};


struct ka_image_t {
	char *id;
	char *sid;
	char *name;

	struct ka_init_from_t init_from;
};


struct ka_library_images_t {
	char *id;
	char *name;

	unsigned int image_count;
	struct ka_image_t *image;
};


/**************** effect types ****************/

struct ka_color_t {
	char *sid;
	ka_real_t rgba[4];
};


/**************** material types ****************/

struct ka_instance_effect_t {
	char *sid;
	char *name;
	char *url; /* required */
};


struct ka_material_t {
	char *id;
	char *name;

	struct ka_instance_effect_t instance_effect;
};


struct ka_library_materials_t {
	char *id;
	char *name;

	unsigned int material_count;
	struct ka_material_t *material;
};


/**************** kalmia_t ****************/

struct kalmia_t {
	struct ka_library_geometries_t *library_geometries;
	struct ka_library_materials_t *library_materials;
	struct ka_library_images_t *library_images;
};


struct kalmia_t * kalmia_parse_file(const char *filename);
void kalmia_destroy(struct kalmia_t *k);


#endif