move camera lens/angle conversion to BLI_math

source/blender/blenkernel/BKE_object.h

@@ -77,8 +77,6 @@ void *add_camera(char *name);
 struct Camera *copy_camera(struct Camera *cam);
 void make_local_camera(struct Camera *cam);
 float dof_camera(struct Object *ob);
-float camera_get_angle(struct Camera *cam);
-void camera_set_angle(struct Camera *cam, float angle);
 	
 void *add_lamp(char *name);
 struct Lamp *copy_lamp(struct Lamp *la);

source/blender/blenkernel/intern/object.c

@@ -773,17 +773,6 @@ float dof_camera(Object *ob)
 	return cam->YF_dofdist;
 }
 
-/* angle in radians */
-float camera_get_angle(Camera *cam)
-{
-	return 2.f * atan(16.0f/cam->lens);
-}
-
-void camera_set_angle(Camera *cam, float angle)
-{
-	cam->lens = 16.0f / tan(angle * 0.5f);
-}
-
 void *add_lamp(char *name)
 {
 	Lamp *la;

source/blender/blenlib/BLI_math_rotation.h

@@ -166,6 +166,9 @@ void mul_v3m3_dq(float r[3], float R[3][3], DualQuat *dq);
 void mat4_to_dquat(DualQuat *r, float base[4][4], float M[4][4]);
 void dquat_to_mat4(float R[4][4], DualQuat *dq);
 
+float lens_to_angle(float lens);
+float angle_to_lens(float angle);
+
 #ifdef __cplusplus
 }
 #endif

source/blender/blenlib/intern/math_rotation.c

@@ -1503,3 +1503,13 @@ void copy_dq_dq(DualQuat *dq1, DualQuat *dq2)
 	memcpy(dq1, dq2, sizeof(DualQuat));
 }
 
+/* lense/angle conversion (radians) */
+float lens_to_angle(float lens)
+{
+	return 2.0f * atan(16.0f/lens);
+}
+
+float angle_to_lens(float angle)
+{
+	return 16.0f / tan(angle * 0.5f);
+}

source/blender/blenlib/intern/uvproject.c

@@ -39,9 +39,6 @@ typedef struct UvCameraInfo {
 	short do_persp, do_pano, do_rotmat;
 } UvCameraInfo;
 
-/* ugly */
-extern float camera_get_angle(struct Camera *cam);
-
 void project_from_camera(float target[2], float source[3], UvCameraInfo *uci)
 {
 	float pv4[4];
@@ -138,7 +135,7 @@ UvCameraInfo *project_camera_info(Object *ob, float (*rotmat)[4], float winx, fl
 	uci.do_pano = (camera->flag & CAM_PANORAMA);
 	uci.do_persp = (camera->type==CAM_PERSP);
 
-	uci.camangle= camera_get_angle(camera)/2.0f;
+	uci.camangle= lens_to_angle(camera->lens) / 2.0f;
 	uci.camsize=  uci.do_persp ?  uci.camsize= tanf(uci.camangle) : camera->ortho_scale;
 
 	if (invert_m4_m4(uci.caminv, ob->obmat)) {

source/blender/blenloader/intern/readfile.c

@@ -8435,7 +8435,6 @@ static void do_versions(FileData *fd, Library *lib, Main *main)
 	}
 	if(main->versionfile <= 243) {
 		Object *ob= main->object.first;
-		Camera *cam = main->camera.first;
 		Material *ma;
 
 		for(ma=main->mat.first; ma; ma= ma->id.next) {

source/blender/makesrna/intern/rna_camera.c

@@ -42,14 +42,14 @@
 static float rna_Camera_angle_get(PointerRNA *ptr)
 {
 	Camera *cam= ptr->id.data;
-	
-	return camera_get_angle(cam);
+
+	return lens_to_angle(cam->lens);
 }
 
 static void rna_Camera_angle_set(PointerRNA *ptr, float value)
 {
 	Camera *cam= ptr->id.data;
-	camera_set_angle(cam, value);
+	cam->lens= angle_to_lens(value);
 }
 
 #else