100 lines
3.5 KiB
C#
100 lines
3.5 KiB
C#
////////////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2007-2020 , Inc. All Rights Reserved.
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//
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////////////////////////////////////////////////////////////////////////////////
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using UnityEngine;
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namespace GCSeries.Core.Extensions
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{
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public static class LineRendererExtensions
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{
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////////////////////////////////////////////////////////////////////////
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// Public Extension Methods
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////////////////////////////////////////////////////////////////////////
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/// <summary>
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/// Update the positions of the line renderer to comform to
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/// a quadratic bezier curve based on the specified control points.
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/// </summary>
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///
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/// <param name="p0">
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/// First control point defining the quadratic bezier curve.
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/// </param>
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/// <param name="p1">
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/// Second control point defining the quadratic bezier curve.
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/// </param>
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/// <param name="p2">
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/// Third control point defining the quadratic bezier curve.
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/// </param>
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public static void SetBezierCurve(
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this LineRenderer l, Vector3 p0, Vector3 p1, Vector3 p2)
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{
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l.SetBezierCurve(0, l.positionCount, p0, p1, p2);
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}
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/// <summary>
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/// Update the positions of the line renderer (defined by the specified
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/// start index) to comform to a quadratic bezier curve based on the
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/// specified control points.
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/// </summary>
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///
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/// <param name="startIndex">
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/// The index of the first position to update.
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/// </param>
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/// <param name="p0">
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/// First control point defining the quadratic bezier curve.
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/// </param>
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/// <param name="p1">
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/// Second control point defining the quadratic bezier curve.
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/// </param>
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/// <param name="p2">
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/// Third control point defining the quadratic bezier curve.
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/// </param>
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public static void SetBezierCurve(this LineRenderer l,
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int startIndex, Vector3 p0, Vector3 p1, Vector3 p2)
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{
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l.SetBezierCurve(startIndex, l.positionCount - startIndex, p0, p1, p2);
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}
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/// <summary>
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/// Update the positions of the line renderer (defined by the specified
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/// start index and length) to comform to a quadratic bezier curve
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/// based on the specified control points.
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/// </summary>
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///
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/// <param name="startIndex">
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/// The index of the first position to update.
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/// </param>
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/// <param name="length">
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/// The number of positions to update.
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/// </param>
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/// <param name="p0">
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/// First control point defining the quadratic bezier curve.
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/// </param>
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/// <param name="p1">
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/// Second control point defining the quadratic bezier curve.
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/// </param>
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/// <param name="p2">
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/// Third control point defining the quadratic bezier curve.
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/// </param>
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public static void SetBezierCurve(this LineRenderer l,
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int startIndex, int length, Vector3 p0, Vector3 p1, Vector3 p2)
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{
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float t = 0;
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float step = 1 / (float)(length - 1);
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for (int i = startIndex; i < startIndex + length; ++i)
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{
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Vector3 position =
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Vector3Extensions.ComputePointOnBezierCurve(p0, p1, p2, t);
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l.SetPosition(i, position);
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t += step;
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}
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}
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}
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}
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