/**
* @brief Absolute vertical rotation
* @param angle The rotation angle in degrees
*
* Rotation is not from current direction but from origin.
*/
void RCamera::rotate_vert_abs(float angle) {
psi_rot = angle;
if (third_person)
RANGE_BOUND(psi_rot, -90.0f, 90.0f);
else {
psi_rot = FLOAT_MOD(psi_rot, 360.0);
if (psi_rot < 0)
psi_rot = 360.0f - psi_rot;
}
}
/**
* @brief Vertically rotate the camera
* @param angle The rotation angle in degrees
*/
void RCamera::rotate_vert(float angle) {
psi_rot += angle;
if (third_person)
RANGE_BOUND(psi_rot, -180.0f, 179.9f);
if (psi_rot < 0)
psi_rot = 0.01f;
else {
psi_rot = FLOAT_MOD(psi_rot, 360.0);
if (psi_rot < 0)
psi_rot = 360.0f - psi_rot;
}
}
/*
* Backend function for:
* rotate_model()
* rotate_model_absolute()
*/
static void _rotate_model(enum MD3_BODY_PARTS type, int axis, float degree, int absolute) {
struct md3_model_t* m = NULL;
if ((axis != X_AXIS) && (axis != Y_AXIS) && (axis != Z_AXIS))
/* not a valid axis */
return;
m = world_get_model_by_type(type);
if (!m)
return;
if (absolute)
m->rot[axis] = degree;
else
m->rot[axis] += degree;
/* modulate axis rotation to be between 0 and 359 */
m->rot[axis] = FLOAT_MOD(m->rot[axis], 360);
}
/*
* Rotate all models along the specified axis __to an absolute degree__.
*
* axis can be one of:
* X_AXIS
* Y_AXIS
* Z_AXIS
*
* Exclude can be any MD3_BODY_PARTS OR'ed togther that will not be applied.
*/
void rotate_all_models_absolute(int axis, float degree, unsigned int exclude) {
struct world_link_models_t* ln = g_world->models;
while (ln) {
if (!ln->model) {
ln = ln->next;
continue;
}
if ((ln->model->body_part & exclude) == exclude) {
/* skip this one */
ln = ln->next;
continue;
}
ln->model->rot[axis] = degree;
/* modulate axis rotation to be between 0 and 359 */
ln->model->rot[axis] = FLOAT_MOD(ln->model->rot[axis], 360);
ln = ln->next;
}
}
/**
* @brief Absolute horizontal rotation
* @param angle The rotation angle in degrees
*
* Rotation is not from current direction but from origin.
*/
void RCamera::rotate_hor_abs(float angle) {
theta_rot = FLOAT_MOD(angle, 360.0);
if (theta_rot < 0)
theta_rot = 360.0f - theta_rot;
}
