1 files changed, 38 insertions, 0 deletions
diff --git a/dep/include/g3dlite/G3D/Quat.inl b/dep/include/g3dlite/G3D/Quat.inl
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index 00000000000..705cb0455d4
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+++ b/dep/include/g3dlite/G3D/Quat.inl
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+/**
+  Quat.inl
+ 
+  @cite Quaternion implementation based on Watt & Watt page 363.  
+  Thanks to Max McGuire for slerp optimizations.
+  
+  @maintainer Morgan McGuire, matrix@graphics3d.com
+  
+  @created 2002-01-23
+  @edited  2004-03-04
+ */
+
+namespace G3D {
+
+inline float& Quat::operator[] (int i) {
+    debugAssert(i >= 0);
+    debugAssert(i < 4);
+    return ((float*)this)[i];
+}
+
+inline const float& Quat::operator[] (int i) const {
+    debugAssert(i >= 0);
+    debugAssert(i < 4);
+    return ((float*)this)[i];
+}
+
+
+
+inline Quat Quat::operator-(const Quat& other) const {
+    return Quat(x - other.x, y - other.y, z - other.z, w - other.w);
+}
+
+inline Quat Quat::operator+(const Quat& other) const {
+    return Quat(x + other.x, y + other.y, z + other.z, w + other.w);
+}
+
+}
+