#pragma once

#include "math/geometry.h"
#include "renderer/renderer_types.h"

typedef struct nine_slice {
	// Actual corner w/h
	vec2i corner_size;
	// Sampled corner w/h
	vec2i corner_px_size;

	// Overall w/h of 9-slice.
	vec2i size;

	vec2i atlas_px_min;
	vec2i atlas_px_max;

	vec2i atlas_px_size;

	b8 is_dirty;

	/** @brief The center of the geometry in local coordinates. */
	vec3 center;
	/** @brief The extents of the geometry in local coordinates. */
	extents_3d extents;

	/** @brief The vertex renderbuffer data. */
	renderbuffer_data vertex_data;
	/** @brief The index renderbuffer data. */
	renderbuffer_data index_data;

} nine_slice;

KAPI b8 nine_slice_create (const char *name, vec2i size, vec2i atlas_px_size, vec2i atlas_px_min, vec2i atlas_px_max, vec2i corner_px_size, vec2i corner_size, nine_slice *out_nine_slice);
KAPI void nine_slice_destroy (nine_slice *nslice);

/**
 * Updates nine slice vertex data for the given nine slice. Optionally reuploads to GPU.
 * @param nslice A pointer to the nine-slice to be updated.
 * @param vertices An external array of vertices to populate. If 0/null, uses vertex array in nslice.
 * @returns True on success; otherwise false.
 */
KAPI b8 nine_slice_update (nine_slice *nslice, vertex_2d *vertices);

KAPI void nine_slice_render_frame_prepare (nine_slice *nslice, const struct frame_data *p_frame_data);