68 lines
2.5 KiB
C#
68 lines
2.5 KiB
C#
#if UNITY_EDITOR
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using UnityEditor;
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using UnityEngine;
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namespace SLZ.Marrow.Utilities
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{
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public class DrawGizmoHelper
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{
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public enum ArrowType
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{
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Default,
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Double
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}
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public static void Arrow(Vector3 start, Vector3 end, Vector3 normal = default(Vector3), ArrowType type = ArrowType.Default, float arrowHeadLength = 0.2f, float arrowHeadAngle = 30.0f)
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{
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if (normal.sqrMagnitude <= 0)
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{
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normal = Vector3.up;
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}
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Vector3 pos = start;
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Vector3 direction = end - start;
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Vector3 headRight = Vector3.zero;
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Vector3 headLeft = Vector3.zero;
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if (direction != Vector3.zero)
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{
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headRight = Quaternion.LookRotation(direction, normal) * Quaternion.Euler(0, 180 + arrowHeadAngle, 0) * new Vector3(0, 0, 1);
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headLeft = Quaternion.LookRotation(direction, normal) * Quaternion.Euler(0, 180 - arrowHeadAngle, 0) * new Vector3(0, 0, 1);
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}
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Gizmos.DrawRay(pos + direction, headRight * arrowHeadLength);
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Gizmos.DrawRay(pos + direction, headLeft * arrowHeadLength);
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switch (type)
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{
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case ArrowType.Default:
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Gizmos.DrawRay(pos, direction);
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break;
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case ArrowType.Double:
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Gizmos.DrawRay(pos, direction);
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Gizmos.DrawRay(pos, -headRight * arrowHeadLength);
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Gizmos.DrawRay(pos, -headLeft * arrowHeadLength);
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break;
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}
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}
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public static void DrawText(string text, Vector3 position = default(Vector3))
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{
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Handles.BeginGUI();
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GUI.color = Gizmos.color;
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position = Gizmos.matrix.MultiplyPoint(position);
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var view = SceneView.currentDrawingSceneView;
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if (view == null)
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return;
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Vector3 screenPos = view.camera.WorldToScreenPoint(position);
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if (screenPos.y < 0 || screenPos.y > Screen.height || screenPos.x < 0 || screenPos.x > Screen.width || screenPos.z < 0)
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{
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Handles.EndGUI();
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return;
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}
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Vector2 size = GUI.skin.label.CalcSize(new GUIContent(text));
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GUI.Label(new Rect(screenPos.x - (size.x / 2), view.position.height - screenPos.y - (size.y * 2f), size.x, size.y), text);
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Handles.EndGUI();
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}
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}
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}
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#endif
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