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Core/Movement: Allow overwriting number of steps for spline length calculations

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Port From (https://github.com/TrinityCore/TrinityCore/commit/b9353041a6cce58d972b63d5138517274a1bb6d6)
This commit is contained in:
hondacrx
2022-06-12 00:37:30 -04:00
parent cbae3b3248
commit 9c015e71fa
1 changed files with 15 additions and 6 deletions
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Source/Game/Movement/Spline.cs
+15 -6
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@@ -79,14 +79,14 @@ namespace Game.Movement
{ {
initializer.Initialize(ref m_mode, ref _cyclic, ref points, ref index_lo, ref index_hi); initializer.Initialize(ref m_mode, ref _cyclic, ref points, ref index_lo, ref index_hi);
} }
public void InitCyclicSpline(Vector3[] controls, int count, EvaluationMode m, int cyclic_point, float orientation) public void InitCyclicSpline(Vector3[] controls, int count, EvaluationMode m, int cyclic_point, float orientation = 0f)
{ {
m_mode = m; m_mode = m;
_cyclic = true; _cyclic = true;
InitSpline(controls, count, m, orientation); InitSpline(controls, count, m, orientation);
} }
public void InitSpline(Span<Vector3> controls, int count, EvaluationMode m, float orientation = 0) public void InitSpline(Span<Vector3> controls, int count, EvaluationMode m, float orientation = 0f)
{ {
m_mode = m; m_mode = m;
_cyclic = false; _cyclic = false;
@@ -230,9 +230,9 @@ namespace Game.Movement
int i = 1; int i = 1;
double length = 0; double length = 0;
while (i <= 3) while (i <= stepsPerSegment)
{ {
C_Evaluate(p, i / (float)3, s_catmullRomCoeffs, out nextPos); C_Evaluate(p, i / (float)stepsPerSegment, s_catmullRomCoeffs, out nextPos);
length += (nextPos - curPos).Length(); length += (nextPos - curPos).Length();
curPos = nextPos; curPos = nextPos;
++i; ++i;
@@ -251,9 +251,9 @@ namespace Game.Movement
int i = 1; int i = 1;
double length = 0; double length = 0;
while (i <= 3) while (i <= stepsPerSegment)
{ {
C_Evaluate(p, i / (float)3, s_Bezier3Coeffs, out nextPos); C_Evaluate(p, i / (float)stepsPerSegment, s_Bezier3Coeffs, out nextPos);
length += (nextPos - curPos).Length(); length += (nextPos - curPos).Length();
curPos = nextPos; curPos = nextPos;
++i; ++i;
@@ -262,6 +262,8 @@ namespace Game.Movement
} }
#endregion #endregion
void set_steps_per_segment(int newStepsPerSegment) { stepsPerSegment = newStepsPerSegment; }
public void ComputeIndex(float t, ref int index, ref float u) public void ComputeIndex(float t, ref int index, ref float u)
{ {
//ASSERT(t >= 0.f && t <= 1.f); //ASSERT(t >= 0.f && t <= 1.f);
@@ -368,6 +370,13 @@ namespace Game.Movement
public EvaluationMode m_mode; public EvaluationMode m_mode;
bool _cyclic; bool _cyclic;
float initialOrientation; float initialOrientation;
// could be modified, affects segment length evaluation precision
// lesser value saves more performance in cost of lover precision
// minimal value is 1
// client's value is 20, blizzs use 2-3 steps to compute length
int stepsPerSegment = 3;
int index_lo; int index_lo;
int index_hi; int index_hi;
public enum EvaluationMode public enum EvaluationMode