#include "main.h"
#include <cglm/cam.h>
#include <cglm/mat4.h>
#include <cglm/quat.h>

mat4 ortho[] = {
	{
		{1, 0, 0, 0},
		{0, 1, 0, 0},
		{0, 0, 1, 0},
		{0, 0, 0, 1},
	},
	{
		{0, 1, 0, 0},
		{-1, 0, 0, 0},
		{0, 0, 1, 0},
		{0, 0, 0, 1},
	},
	{
		{0, 0, 1, 0},
		{0, 1, 0, 0},
		{-1, 0, 0, 0},
		{0, 0, 0, 1},
	},
};

void load_fix_matrix(id_t shader, float ratio)
{
	mat4 m, n;
	const int d = 7;

	glm_lookat((vec3){0, 0, -d}, (vec3){0, 0, 0}, (vec3){0, 1, 0}, m);
	glm_perspective(CGLM_PI / 4, ratio, d - 3, d + 3, n);
	glm_mat4_mul(n, m, m);

	load_mat4_to_shader(shader, "fix", (mat4_t)m);
}

void load_mdl_matrix(id_t shader, unsigned char i, unsigned char c)
{
	load_float_to_shader(shader, "idx", c);
	load_mat4_to_shader(shader, "mdl", (mat4_t)ortho[i]);
}

void load_rot_matrix(id_t shader, quat_t q)
{
	mat4 m;
	glm_quat_mat4(q, m);
	load_mat4_to_shader(shader, "rot", (mat4_t)m);
}