From 2c491b5d2e6db52e526a39e3040c59db4edd25de Mon Sep 17 00:00:00 2001 From: Benoit Bolsee Date: Thu, 16 Apr 2009 20:13:13 +0000 Subject: BGE: slow parent was causing scaling distortion, now use correct quaternion interpolation. --- .../gameengine/Ketsji/KX_SG_NodeRelationships.cpp | 21 +++++---------------- 1 file changed, 5 insertions(+), 16 deletions(-) (limited to 'source/gameengine/Ketsji/KX_SG_NodeRelationships.cpp') diff --git a/source/gameengine/Ketsji/KX_SG_NodeRelationships.cpp b/source/gameengine/Ketsji/KX_SG_NodeRelationships.cpp index 87ff3b53911..c3b0c21c8e0 100644 --- a/source/gameengine/Ketsji/KX_SG_NodeRelationships.cpp +++ b/source/gameengine/Ketsji/KX_SG_NodeRelationships.cpp @@ -235,23 +235,12 @@ UpdateChildCoordinates( // now 'interpolate' the normal coordinates with the last // world coordinates to get the new world coordinates. - // problem 1: - // The child world scale needs to be initialized in some way for this - // to make sense - // problem 2: - // This is way of doing interpolation is nonsense - - int i; - MT_Scalar weight = MT_Scalar(1)/(m_relax + 1); - for (i=0;i <3 ;i++) { - child_w_scale[i] = (m_relax * child_w_scale[i] + child_n_scale[i]) * weight; - child_w_pos[i] = (m_relax * child_w_pos[i] + child_n_pos[i]) * weight; - child_w_rotation[0][i] = (m_relax * child_w_rotation[0][i] + child_n_rotation[0][i]) * weight; - child_w_rotation[1][i] = (m_relax * child_w_rotation[1][i] + child_n_rotation[1][i]) * weight; - child_w_rotation[2][i] = (m_relax * child_w_rotation[2][i] + child_n_rotation[2][i]) * weight; - } - + child_w_scale = (m_relax * child_w_scale + child_n_scale) * weight; + child_w_pos = (m_relax * child_w_pos + child_n_pos) * weight; + // for rotation we must go through quaternion + MT_Quaternion child_w_quat = child_w_rotation.getRotation().slerp(child_n_rotation.getRotation(), weight); + child_w_rotation.setRotation(child_w_quat); //FIXME: update physics controller. } else { child_w_scale = child_n_scale; -- cgit v1.2.3