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1: 2015-02-26 (木) 22:16:24 iseki  |
| | + | *** llLookAt() by Janus Dugong [#wb1da18a] |
| | + | public void llLookAt(LSL_Vector target, double strength, double damping) |
| | + | { |
| | + | m_host.AddScriptLPS(1); |
| | + | // Determine where we are looking from |
| | + | LSL_Vector from = llGetPos(); |
| | | | |
| | + | // normalized direction to target |
| | + | LSL_Vector dir = llVecNorm(target - from); |
| | + | |
| | + | // Janus Dugong & Fumi.Hax |
| | + | if (LSL_Vector.Mag(dir)<=0.0) return; |
| | + | // |
| | + | LSL_Vector vec_yaw = new LSL_Vector(0.0, 0.0, Math.Atan2(dir.y, dir.x)); // yaw |
| | + | LSL_Vector vec_pth = new LSL_Vector(0.0, Math.Acos(dir.z), 0.0); // pitch |
| | + | LSL_Rotation rot_yaw = llEuler2Rot(vec_yaw); |
| | + | LSL_Rotation rot_pth = llEuler2Rot(vec_pth); |
| | + | LSL_Rotation rot = rot_pth * rot_yaw; |
| | + | |
| | + | // Per discussion with Melanie, for non-physical objects llLookAt appears to simply |
| | + | // set the rotation of the object, copy that behavior |
| | + | PhysicsActor pa = m_host.PhysActor; |
| | + | |
| | + | if (strength == 0 || pa == null || !pa.IsPhysical) |
| | + | { |
| | + | llSetRot(rot); |
| | + | } |
| | + | else |
| | + | { |
| | + | m_host.StartLookAt(rot, (float)strength, (float)damping); |
| | + | } |
| | + | } |
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