43 lines
882 B
C#
43 lines
882 B
C#
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using System;
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using Unity.Mathematics;
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using UnityEngine;
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using UnityEngine.Splines;
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namespace samples.Runtime
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{
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/// <summary>
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/// Animate extruding a section of a spline.
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/// </summary>
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[RequireComponent(typeof(SplineExtrude))]
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class AnimateSplineExtrude : MonoBehaviour
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{
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SplineExtrude m_Extrude;
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[SerializeField, Range(.0001f, 2f)]
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float m_Speed = .25f;
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float m_Span;
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[SerializeField]
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bool m_RebuildExtrudeOnUpdate = true;
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void Start()
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{
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m_Extrude = GetComponent<SplineExtrude>();
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m_Span = (m_Extrude.range.y - m_Extrude.range.x) * .5f;
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}
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void Update()
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{
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bool closed = m_Extrude.spline.Closed;
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float t = closed
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? Time.time * m_Speed
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: Mathf.Lerp(-m_Span, 1 + m_Span, math.frac(Time.time * m_Speed));
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m_Extrude.range = new float2(t - m_Span, t + m_Span);
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if (m_RebuildExtrudeOnUpdate)
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m_Extrude.Rebuild();
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}
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}
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}
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