42 lines
1.4 KiB
C#
42 lines
1.4 KiB
C#
// Copyright (c) Pixel Crushers. All rights reserved.
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using UnityEngine;
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namespace PixelCrushers
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{
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/// <summary>
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/// Provides more drawing routines for gizmos.
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/// </summary>
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public static class MoreGizmos
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{
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/// <summary>
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/// Draws an arrow, which is a ray with an arrowhead at the end.
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/// </summary>
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/// <param name='from'>
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/// Start of the ray.
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/// </param>
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/// <param name='direction'>
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/// Direction and length the ray extends.
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/// </param>
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/// <param name='arrowheadLength'>
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/// Length of the arrowhead that extends from the end the ray.
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/// </param>
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/// <param name='arrowheadAngle'>
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/// Angle of the arrowhead in degrees.
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/// </param>
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public static void DrawArrow(Vector3 from, Vector3 direction, float arrowheadLength = 0.2f, float arrowheadAngle = 30f)
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{
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if (Mathf.Approximately(direction.magnitude, 0)) return;
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Vector3 right = Quaternion.LookRotation(direction) * Quaternion.Euler(0, 180f + arrowheadAngle, 0) * Vector3.forward;
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Vector3 left = Quaternion.LookRotation(direction) * Quaternion.Euler(0, 180f - arrowheadAngle, 0) * Vector3.forward;
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Gizmos.DrawRay(from, direction);
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Gizmos.DrawRay(from + direction, right * arrowheadLength);
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Gizmos.DrawRay(from + direction, left * arrowheadLength);
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}
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}
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}
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