Revision: 6751
http://playerstage.svn.sourceforge.net/playerstage/?rev=6751&view=rev
Author: alexcb
Date: 2008-07-03 14:28:20 -0700 (Thu, 03 Jul 2008)
Log Message:
-----------
fixed distortion issue when tilting camera
Modified Paths:
--------------
code/stage/trunk/libstage/model_camera.cc
Modified: code/stage/trunk/libstage/model_camera.cc
===================================================================
--- code/stage/trunk/libstage/model_camera.cc 2008-07-03 21:09:25 UTC (rev
6750)
+++ code/stage/trunk/libstage/model_camera.cc 2008-07-03 21:28:20 UTC (rev
6751)
@@ -238,16 +238,11 @@
if( _frame_data == NULL || !showCameraData )
return;
- // TODO - shift to global CS?
-
float w_fov = _camera.horizFov();
float h_fov = _camera.vertFov();
- float center_horiz = - _yaw_offset;
- float center_vert = - _pitch_offset;
-
- float start_fov = center_horiz + w_fov / 2.0 + 180.0; //start at right
- float start_vert_fov = center_vert + h_fov / 2.0 + 90.0; //start at top
+ float start_fov = w_fov / 2.0 + 180.0; //start at right
+ float start_vert_fov = h_fov / 2.0 + 90.0; //start at top
int w = _width;
int h = _height;
@@ -266,9 +261,21 @@
ColoredVertex* vertex = _vertexbuf_cache +
index;
//calculate and cache normal unit vectors of
the sphere
- vertex->x = -sin( dtor( vert_a ) ) * cos( dtor(
a ) );
- vertex->y = -sin( dtor( vert_a ) ) * sin( dtor(
a ) );
- vertex->z = -cos( dtor( vert_a ) );
+ float x = -sin( dtor( vert_a ) ) * cos( dtor( a
) );
+ float y = -sin( dtor( vert_a ) ) * sin( dtor( a
) );
+ float z = -cos( dtor( vert_a ) );
+
+ //rotate them about the pitch and yaw offsets -
keeping distortion of the sphere at the extremes
+ a = dtor( - _yaw_offset );
+ vertex->x = x * cos( a ) - y * sin( a );
+ vertex->y = x * sin( a ) + y * cos( a );
+ vertex->z = z;
+
+ x = vertex->x; y = vertex->y; z = vertex->z;
+ a = dtor( _pitch_offset );
+ vertex->x = z * sin( a ) + x * cos( a );
+ vertex->y = y;
+ vertex->z = z * cos( a ) - x * sin( a );
}
}
_valid_vertexbuf_cache = true;
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