From cf1b08401da851dd98cde45d9e4acf6e1d185224 Mon Sep 17 00:00:00 2001
From: Mikko Rasa <tdb@tdb.fi>
Date: Wed, 19 Jun 2013 00:30:18 +0300
Subject: [PATCH] Field of view is an angle too

---
 source/stereocombiner.cpp | 3 +--
 source/stereocombiner.h   | 6 ++++--
 source/stereoview.cpp     | 2 +-
 source/stereoview.h       | 3 ++-
 4 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/source/stereocombiner.cpp b/source/stereocombiner.cpp
index 27cbb8f..be0b01e 100644
--- a/source/stereocombiner.cpp
+++ b/source/stereocombiner.cpp
@@ -6,8 +6,7 @@ namespace GL {
 StereoCombiner::StereoCombiner():
 	width_div(1),
 	height_div(1),
-	keep_aspect(false),
-	fov(0)
+	keep_aspect(false)
 { }
 
 } // namespace GL
diff --git a/source/stereocombiner.h b/source/stereocombiner.h
index 1017930..a4b91bf 100644
--- a/source/stereocombiner.h
+++ b/source/stereocombiner.h
@@ -1,6 +1,8 @@
 #ifndef MSP_GL_STEREOCOMBINER_H_
 #define MSP_GL_STEREOCOMBINER_H_
 
+#include <msp/geometry/angle.h>
+
 namespace Msp {
 namespace GL {
 
@@ -12,7 +14,7 @@ protected:
 	unsigned width_div;
 	unsigned height_div;
 	bool keep_aspect;
-	float fov;
+	Geometry::Angle<float> fov;
 
 	StereoCombiner();
 public:
@@ -21,7 +23,7 @@ public:
 	unsigned get_width_divisor() const { return width_div; }
 	unsigned get_height_divisor() const { return height_div; }
 	bool is_aspect_kept() const { return keep_aspect; }
-	float get_field_of_view() const { return fov; }
+	const Geometry::Angle<float> &get_field_of_view() const { return fov; }
 
 	virtual void render(const Texture2D &, const Texture2D &) const = 0;
 };
diff --git a/source/stereoview.cpp b/source/stereoview.cpp
index 9a4b0e0..419e95c 100644
--- a/source/stereoview.cpp
+++ b/source/stereoview.cpp
@@ -39,7 +39,7 @@ void StereoView::setup_frame() const
 
 	EyeParams params;
 	params.fov = combiner->get_field_of_view();
-	if(!params.fov)
+	if(params.fov==Geometry::Angle<float>::zero())
 		params.fov = base_camera.get_field_of_view();
 
 	params.aspect = base_camera.get_aspect();
diff --git a/source/stereoview.h b/source/stereoview.h
index 63ee183..4dce63b 100644
--- a/source/stereoview.h
+++ b/source/stereoview.h
@@ -1,6 +1,7 @@
 #ifndef MSP_GL_STEREOVIEW_H_
 #define MSP_GL_STEREOVIEW_H_
 
+#include <msp/geometry/angle.h>
 #include "camera.h"
 #include "framebuffer.h"
 #include "renderable.h"
@@ -26,7 +27,7 @@ private:
 
 	struct EyeParams
 	{
-		float fov;
+		Geometry::Angle<float> fov;
 		float aspect;
 		float near_clip;
 		float far_clip;
-- 
2.45.2