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-rw-r--r--src/lsq_rectilinear.mac5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/lsq_rectilinear.mac b/src/lsq_rectilinear.mac
index 4ed1e09..8e0c0f3 100644
--- a/src/lsq_rectilinear.mac
+++ b/src/lsq_rectilinear.mac
@@ -2,7 +2,7 @@
* rectilinear (pinhole) projection model with distortion correction
*/
-/* switch to cartesian coordinates for nick rotation */
+/* switch to cartesian coordinates */
c_x : cos(m_nick) * cos(m_view - c_view)$
c_y : cos(m_nick) * sin(m_view - c_view)$
c_z : sin(m_nick)$
@@ -12,8 +12,11 @@ c_x_rot : cos(c_nick) * c_x$ + sin(c_nick) * c_z$
c_y_rot : c_y$
c_z_rot : -sin(c_nick) * c_x + cos(c_nick) * c_z$
+/* pinhole projection */
x : c_y_rot / c_x_rot$
y : - c_z_rot / c_x_rot$
+
+/* rotation around view axis */
x_rot : y * sin(c_tilt) + x * cos(c_tilt)+x0$
y_rot : y * cos(c_tilt) - x * sin(c_tilt)$