Configurable sensor size:

- Added support of variable size sensor width and height.
- Added presets for most common cameras, also new presets can be defined by user.
- Added option to control which dimension (vertical or horizontal) of sensor
  size defines FOV. Old behavior of automatic FOV calculation is also kept.
- Renderer, viewport, game engine and collada importer/exporter should
  deal fine with this changes. Other exporters would be updated soon.

1 files changed, 4 insertions, 4 deletions

diff --git a/source/blender/blenlib/intern/math_rotation.c b/source/blender/blenlib/intern/math_rotation.c
index 0ca8b72c1e3..7fecbae8229 100644
--- a/source/blender/blenlib/intern/math_rotation.c
+++ b/source/blender/blenlib/intern/math_rotation.c
@@ -1688,14 +1688,14 @@ void vec_apply_track(float vec[3], short axis)
 }
 
 /* lens/angle conversion (radians) */
-float lens_to_angle(float lens)
+float focallength_to_fov(float focal_length, float sensor)
 {
-	return 2.0f * atanf(16.0f/lens);
+	return 2.0f * atanf((sensor/2.0f) / focal_length);
 }
 
-float angle_to_lens(float angle)
+float fov_to_focallength(float hfov, float sensor)
 {
-	return 16.0f / tanf(angle * 0.5f);
+	return (sensor/2.0f) / tanf(hfov * 0.5f);
 }
 
 /* 'mod_inline(-3,4)= 1', 'fmod(-3,4)= -3' */