51 lines
1.1 KiB
C#
51 lines
1.1 KiB
C#
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using Godot;
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using System.Collections.Generic;
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namespace Rokojori;
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public abstract class LineVFXData
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{
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public abstract int GetUpdateID();
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public abstract IEnumerable<LinePointData> GetPointData();
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public abstract int GetNumSegments();
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public abstract void SetSegmentData( MeshInstance3D mi, int segmentIndex );
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public virtual int GetNumPoints()
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{
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return GetNumSegments() + 1;
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}
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public abstract Vector3 GetPositionAt( int index );
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public Vector3 LerpPositionAt( float normalizedIndex )
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{
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if ( GetNumPoints() == 0 )
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{
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return Vector3.Zero;
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}
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if ( GetNumPoints() == 1 )
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{
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return GetPositionAt( 0 );
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}
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var pointIndex = normalizedIndex * GetNumPoints();
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if ( pointIndex <= 0 )
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{
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return GetPositionAt( 0 );
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}
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if ( pointIndex >= GetNumPoints() - 1 )
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{
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return GetPositionAt( GetNumPoints() - 1 );
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}
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var lowerIndex = Mathf.FloorToInt( pointIndex );
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var higherIndex = Mathf.CeilToInt( pointIndex );
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var p0 = GetPositionAt( lowerIndex );
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var p1 = GetPositionAt( higherIndex );
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return p0.Lerp( p1, pointIndex - lowerIndex );
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}
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}
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