From c5f477c043fe2e6fef3825d28b9761a672576b19 Mon Sep 17 00:00:00 2001
From: David Rose <david@ddrose.com>
Date: Fri, 21 Jun 2002 21:59:59 +0000
Subject: [PATCH] generate quats with look_at also

---
 panda/src/mathutil/look_at_src.I | 28 ++++++++++++++++++++++++++++
 panda/src/mathutil/look_at_src.h | 18 ++++++++++++++++++
 2 files changed, 46 insertions(+)

diff --git a/panda/src/mathutil/look_at_src.I b/panda/src/mathutil/look_at_src.I
index eb292f89c4..019f7e2495 100644
--- a/panda/src/mathutil/look_at_src.I
+++ b/panda/src/mathutil/look_at_src.I
@@ -56,3 +56,31 @@ look_at(FLOATNAME(LMatrix4) &mat, const FLOATNAME(LVector3) &fwd,
   look_at(mat, fwd, FLOATNAME(LVector3)::up(cs), cs);
 }
 
+INLINE_MATHUTIL void
+heads_up(FLOATNAME(LQuaternion) &quat, const FLOATNAME(LVector3) &fwd,
+         const FLOATNAME(LVector3) &up, CoordinateSystem cs) {
+  FLOATNAME(LMatrix3) mat3;
+  heads_up(mat3, fwd, up, cs);
+  quat.set_from_matrix(mat3);
+}
+
+INLINE_MATHUTIL void
+look_at(FLOATNAME(LQuaternion) &quat, const FLOATNAME(LVector3) &fwd,
+        const FLOATNAME(LVector3) &up, CoordinateSystem cs) {
+  FLOATNAME(LMatrix3) mat3;
+  look_at(mat3, fwd, up, cs);
+  quat.set_from_matrix(mat3);
+}
+
+INLINE_MATHUTIL void
+heads_up(FLOATNAME(LQuaternion) &quat, const FLOATNAME(LVector3) &fwd,
+         CoordinateSystem cs) {
+  heads_up(quat, fwd, FLOATNAME(LVector3)::up(cs), cs);
+}
+
+INLINE_MATHUTIL void
+look_at(FLOATNAME(LQuaternion) &quat, const FLOATNAME(LVector3) &fwd,
+        CoordinateSystem cs) {
+  look_at(quat, fwd, FLOATNAME(LVector3)::up(cs), cs);
+}
+
diff --git a/panda/src/mathutil/look_at_src.h b/panda/src/mathutil/look_at_src.h
index 9d45bda8cc..92bb6cd0dd 100644
--- a/panda/src/mathutil/look_at_src.h
+++ b/panda/src/mathutil/look_at_src.h
@@ -64,6 +64,24 @@ INLINE_MATHUTIL void
 look_at(FLOATNAME(LMatrix4) &mat, const FLOATNAME(LVector3) &fwd,
         CoordinateSystem cs);
 
+
+
+INLINE_MATHUTIL void
+heads_up(FLOATNAME(LQuaternion) &quat, const FLOATNAME(LVector3) &fwd,
+         const FLOATNAME(LVector3) &up = FLOATNAME(LVector3)::up(),
+         CoordinateSystem cs = CS_default);
+INLINE_MATHUTIL void
+look_at(FLOATNAME(LQuaternion) &quat, const FLOATNAME(LVector3) &fwd,
+        const FLOATNAME(LVector3) &up = FLOATNAME(LVector3)::up(),
+        CoordinateSystem cs = CS_default);
+
+INLINE_MATHUTIL void
+heads_up(FLOATNAME(LQuaternion) &quat, const FLOATNAME(LVector3) &fwd,
+         CoordinateSystem cs);
+INLINE_MATHUTIL void
+look_at(FLOATNAME(LQuaternion) &quat, const FLOATNAME(LVector3) &fwd,
+        CoordinateSystem cs);
+
 END_PUBLISH
 
 #include "look_at_src.I"