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no need to go from cos into squared sin when just abs of cos is as good

avinationmerge
UbitUmarov 2014-08-12 22:27:50 +01:00
parent dbbfaf3ac3
commit b9224a70c4
1 changed files with 7 additions and 5 deletions
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12
OpenSim/Region/ClientStack/Linden/UDP/LLClientView.cs
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@ -5737,7 +5737,9 @@ namespace OpenSim.Region.ClientStack.LindenUDP
#region Scene/Avatar
// Threshold for body rotation to be a significant agent update
private const float QDELTA = 0.000001f;
// use the abs of cos
private const float QDELTABody = 1.0f - 0.0001f;
private const float QDELTAHead = 1.0f - 0.0001f;
// Threshold for camera rotation to be a significant agent update
private const float VDELTA = 0.01f;
@ -5760,17 +5762,17 @@ namespace OpenSim.Region.ClientStack.LindenUDP
/// <param name='x'></param>
private bool CheckAgentMovementUpdateSignificance(AgentUpdatePacket.AgentDataBlock x)
{
float qdelta1 = 1 - (float)Math.Pow(Quaternion.Dot(x.BodyRotation, m_thisAgentUpdateArgs.BodyRotation), 2);
//qdelta2 = 1 - (float)Math.Pow(Quaternion.Dot(x.HeadRotation, m_thisAgentUpdateArgs.HeadRotation), 2);
float qdelta1 = Math.Abs(Quaternion.Dot(x.BodyRotation, m_thisAgentUpdateArgs.BodyRotation));
//qdelta2 = Math.Abs(Quaternion.Dot(x.HeadRotation, m_thisAgentUpdateArgs.HeadRotation));
bool movementSignificant =
(x.ControlFlags != m_thisAgentUpdateArgs.ControlFlags) // significant if control flags changed
|| (x.ControlFlags != (byte)AgentManager.ControlFlags.NONE) // significant if user supplying any movement update commands
|| (x.Flags != m_thisAgentUpdateArgs.Flags) // significant if Flags changed
|| (x.State != m_thisAgentUpdateArgs.State) // significant if Stats changed
|| (qdelta1 > QDELTA) // significant if body rotation above threshold
|| (qdelta1 < QDELTABody) // significant if body rotation above(below cos) threshold
// Ignoring head rotation altogether, because it's not being used for anything interesting up the stack
// || (qdelta2 > QDELTA * 10) // significant if head rotation above threshold
// || (qdelta2 < QDELTAHead) // significant if head rotation above(below cos) threshold
|| (x.Far != m_thisAgentUpdateArgs.Far) // significant if far distance changed
;
//if (movementSignificant)