X-Git-Url: http://git.tdb.fi/?p=libs%2Fvr.git;a=blobdiff_plain;f=source%2Fstereocombiner.cpp;h=75c788997e770fa0f1a7340d03b578e969062d51;hp=a276c3bc3c677ad2ba24f49df1b435e572842156;hb=c7e4d2226f16c8dfd9136eaa298fb0e6937ef125;hpb=268da92f49360feaf9445ed2b8264d9310d3cebe

diff --git a/source/stereocombiner.cpp b/source/stereocombiner.cpp
index a276c3b..75c7889 100644
--- a/source/stereocombiner.cpp
+++ b/source/stereocombiner.cpp
@@ -1,15 +1,44 @@
+#include <algorithm>
 #include "stereocombiner.h"
 
+using namespace std;
+
 namespace Msp {
 namespace VR {
 
 StereoCombiner::StereoCombiner():
-	width_div(1),
-	height_div(1),
-	keep_aspect(false),
-	oversize(1.0f),
+	target_width(0),
+	target_height(0),
+	render_aspect(1.0f),
 	frustum_skew(0.0f)
 { }
 
+void StereoCombiner::configure_eye_frustums(const Frustum &left_frustum, const Frustum &right_frustum)
+{
+	float vertical = max(max(left_frustum.top, -left_frustum.bottom), max(right_frustum.top, -right_frustum.bottom));
+	fov = Geometry::atan<float>(vertical)*2.0f;
+
+	float inner = max(left_frustum.right, -right_frustum.left);
+	float outer = max(-left_frustum.left, right_frustum.right);
+	frustum_skew = (inner-outer)/(inner+outer);
+
+	render_aspect = (inner+outer)/(vertical*2);
+}
+
+
+StereoCombiner::Frustum::Frustum():
+	left(-1),
+	right(1),
+	bottom(-1),
+	top(1)
+{ }
+
+StereoCombiner::Frustum::Frustum(float l, float r, float b, float t):
+	left(l),
+	right(r),
+	bottom(b),
+	top(t)
+{ }
+
 } // namespace VR
 } // namespace Msp