mtx_prev;
};
-VG_STATIC void camera_lerp_angles( v3f a, v3f b, float t, v3f d ){
+static void camera_lerp_angles( v3f a, v3f b, float t, v3f d ){
d[0] = vg_alerpf( a[0], b[0], t );
d[1] = vg_lerpf( a[1], b[1], t );
d[2] = vg_lerpf( a[2], b[2], t );
}
-VG_STATIC void camera_lerp( camera *a, camera *b, float t, camera *d ){
+/* lerp position, fov, and angles */
+static void camera_lerp( camera *a, camera *b, float t, camera *d ){
v3_lerp( a->pos, b->pos, t, d->pos );
- d->angles[0] = vg_alerpf( a->angles[0], b->angles[0], t );
- d->angles[1] = vg_lerpf( a->angles[1], b->angles[1], t );
- d->angles[2] = vg_lerpf( a->angles[2], b->angles[2], t );
+ camera_lerp_angles( a->angles, b->angles, t, d->angles );
d->fov = vg_lerpf( a->fov, b->fov, t );
}
-VG_STATIC void camera_copy( camera *a, camera *d ){
+static void camera_copy( camera *a, camera *d ){
v3_copy( a->pos, d->pos );
v3_copy( a->angles, d->angles );
d->fov = a->fov;
}
+static void m4x3_transform_camera( m4x3f m, camera *cam ){
+ m4x3_mulv( m, cam->pos, cam->pos );
+
+ v3f v0;
+ v3_angles_vector( cam->angles, v0 );
+ m3x3_mulv( m, v0, v0 );
+ v3_normalize( v0 );
+ v3_angles( v0, cam->angles );
+}
+
/*
* 1) [angles, pos] -> transform
*/
-VG_STATIC void camera_update_transform( camera *cam )
+static void camera_update_transform( camera *cam )
{
v4f qyaw, qpitch, qcam;
q_axis_angle( qyaw, (v3f){ 0.0f, 1.0f, 0.0f }, -cam->angles[0] );
/*
* 2) [transform] -> transform_inverse, view matrix
*/
-VG_STATIC void camera_update_view( camera *cam )
+static void camera_update_view( camera *cam )
{
m4x4_copy( cam->mtx.v, cam->mtx_prev.v );
m4x3_invert_affine( cam->transform, cam->transform_inverse );
/*
* 3) [fov,nearz,farz] -> projection matrix
*/
-VG_STATIC void camera_update_projection( camera *cam )
+static void camera_update_projection( camera *cam )
{
m4x4_copy( cam->mtx.p, cam->mtx_prev.p );
m4x4_projection( cam->mtx.p, cam->fov,
/*
* 4) [projection matrix, view matrix] -> previous pv, new pv
*/
-VG_STATIC void camera_finalize( camera *cam )
+static void camera_finalize( camera *cam )
{
m4x4_copy( cam->mtx.pv, cam->mtx_prev.pv );
m4x4_mul( cam->mtx.p, cam->mtx.v, cam->mtx.pv );
}
-/*
- * http://www.terathon.com/lengyel/Lengyel-Oblique.pdf
- */
-VG_STATIC void m4x4_clip_projection( m4x4f mat, v4f plane )
-{
- v4f c =
- {
- (vg_signf(plane[0]) + mat[2][0]) / mat[0][0],
- (vg_signf(plane[1]) + mat[2][1]) / mat[1][1],
- -1.0f,
- (1.0f + mat[2][2]) / mat[3][2]
- };
-
- v4_muls( plane, 2.0f / v4_dot(plane,c), c );
-
- mat[0][2] = c[0];
- mat[1][2] = c[1];
- mat[2][2] = c[2] + 1.0f;
- mat[3][2] = c[3];
-}
-
-/*
- * Undoes the above operation
- */
-VG_STATIC void m4x4_reset_clipping( m4x4f mat, float ffar, float fnear )
-{
- mat[0][2] = 0.0f;
- mat[1][2] = 0.0f;
- mat[2][2] = -(ffar + fnear) / (ffar - fnear);
- mat[3][2] = -2.0f * ffar * fnear / (ffar - fnear);
-}
-
#endif /* CAMERA_H */