X-Git-Url: https://harrygodden.com/git/?p=vg.git;a=blobdiff_plain;f=vg_camera.h;fp=vg_camera.h;h=45d34440730791214b6065b24ecbd95f06345a53;hp=9fd660bbd0ac1c133191b3f8685fa1c3b35e62ab;hb=3b14f3dcd5bf9dd3c85144f2123d667bfa4bb63f;hpb=fce86711735b15bff37de0f70716808410fcf269

diff --git a/vg_camera.h b/vg_camera.h
index 9fd660b..45d3444 100644
--- a/vg_camera.h
+++ b/vg_camera.h
@@ -1,8 +1,10 @@
 #pragma once
+
 #include "vg_m.h"
 
 typedef struct vg_camera vg_camera;
-struct vg_camera{
+struct vg_camera
+{
    /* Input */
    v3f angles;
    v3f pos;
@@ -21,71 +23,29 @@ struct vg_camera{
    mtx_prev;
 };
 
-static void vg_camera_lerp_angles( v3f a, v3f b, f32 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 );
-}
+void vg_camera_lerp_angles( v3f a, v3f b, f32 t, v3f d );
 
 /* lerp position, fov, and angles */
-static void vg_camera_lerp( vg_camera *a, vg_camera *b, f32 t, vg_camera *d ){
-   v3_lerp( a->pos, b->pos, t, d->pos );
-   vg_camera_lerp_angles( a->angles, b->angles, t, d->angles );
-   d->fov = vg_lerpf( a->fov, b->fov, t );
-}
-
-static void vg_camera_copy( vg_camera *a, vg_camera *d ){
-   v3_copy( a->pos, d->pos );
-   v3_copy( a->angles, d->angles );
-   d->fov = a->fov;
-}
-
-static void vg_m4x3_transform_camera( m4x3f m, vg_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 );
-}
+void vg_camera_lerp( vg_camera *a, vg_camera *b, f32 t, vg_camera *d );
+void vg_camera_copy( vg_camera *a, vg_camera *d );
+void vg_m4x3_transform_camera( m4x3f m, vg_camera *cam );
 
 /*
  * 1) [angles, pos] -> transform 
  */
-static void vg_camera_update_transform( vg_camera *cam ){
-   v4f qyaw, qpitch, qcam;
-   q_axis_angle( qyaw,   (v3f){ 0.0f, 1.0f, 0.0f }, -cam->angles[0] );
-   q_axis_angle( qpitch, (v3f){ 1.0f, 0.0f, 0.0f }, -cam->angles[1] );
-
-   q_mul( qyaw, qpitch, qcam );
-   q_m3x3( qcam, cam->transform );
-   v3_copy( cam->pos, cam->transform[3] );
-}
+void vg_camera_update_transform( vg_camera *cam );
 
 /*
  * 2) [transform] -> transform_inverse, view matrix
  */
-static void vg_camera_update_view( vg_camera *cam ){
-   m4x4_copy( cam->mtx.v,  cam->mtx_prev.v );
-   m4x3_invert_affine( cam->transform, cam->transform_inverse );
-   m4x3_expand( cam->transform_inverse, cam->mtx.v );
-}
+void vg_camera_update_view( vg_camera *cam );
 
 /*
  * 3) [fov,nearz,farz] -> projection matrix
  */
-static void vg_camera_update_projection( vg_camera *cam ){
-   m4x4_copy( cam->mtx.p,  cam->mtx_prev.p );
-   m4x4_projection( cam->mtx.p, cam->fov,
-                    (float)vg.window_x / (float)vg.window_y, 
-                    cam->nearz, cam->farz );
-}
+void vg_camera_update_projection( vg_camera *cam );
 
 /*
  * 4) [projection matrix, view matrix] -> previous pv, new pv 
  */
-static void vg_camera_finalize( vg_camera *cam ){
-   m4x4_copy( cam->mtx.pv, cam->mtx_prev.pv );
-   m4x4_mul( cam->mtx.p, cam->mtx.v, cam->mtx.pv );
-}
+void vg_camera_finalize( vg_camera *cam );