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cam_calc.c
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cam_calc.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* cam_calc.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: jserrano <jserrano@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/11/05 13:46:04 by jserrano #+# #+# */
/* Updated: 2020/11/05 14:02:26 by jserrano ### ########.fr */
/* */
/* ************************************************************************** */
#include "raymarching.h"
void calculate_vectors(t_data *param)
{
double module;
int i;
param->cam.vx[0] = -param->cam.vn[1];
param->cam.vx[1] = param->cam.vn[0];
param->cam.vx[2] = 0;
param->cam.vy[0] = -param->cam.vn[0] * param->cam.vn[2];
param->cam.vy[1] = -param->cam.vn[1] * param->cam.vn[2];
param->cam.vy[2] = pow(param->cam.vn[1], 2) + pow(param->cam.vn[0], 2);
i = -1;
while (++i < 3)
param->cam.p[i] = param->cam.o[i] + param->cam.vn[i] * param->scr.dist;
module = sqrt(pow(param->cam.vx[0], 2) + pow(param->cam.vx[1], 2));
i = -1;
while (++i < 2)
param->cam.vx[i] /= module;
i = -1;
while (++i < 3)
param->cam.vy[i] /= module;
}
void copy_cam(t_data *param)
{
int j;
j = -1;
while (++j < 3)
{
param->c[param->cam.i]->o[j] = param->cam.o[j];
param->c[param->cam.i]->v[j] = param->cam.vn[j];
}
}
void calculate_rotation(t_data *param)
{
double rotation_z_axis;
double rotation_y_axis;
double xy_projection;
rotation_z_axis = param->crd.x * 2 * param->mou.speed * M_PI / 250 +
param->cam.rot_z;
rotation_y_axis = param->crd.y * 2 * param->mou.speed * M_PI / 250 +
param->cam.rot_y;
xy_projection = cos(rotation_y_axis);
param->cam.vn[0] = cos(rotation_z_axis) * xy_projection;
param->cam.vn[1] = sin(rotation_z_axis) * xy_projection;
param->cam.vn[2] = sin(rotation_y_axis);
}