chore: initial commit

Assets/Feel/MMTools/Accessories/MMSprites/MMLineRendererCircle.cs

@@ -0,0 +1,175 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace MoreMountains.Tools
+{
+	[RequireComponent(typeof(LineRenderer))]
+	public class MMLineRendererCircle : MonoBehaviour
+	{
+		/// the possible axis 
+		public enum DrawAxis { X, Y, Z };
+     
+		[Header("Draw Axis")]
+		/// the axis on which to draw the circle
+		[Tooltip("the axis on which to draw the circle")]
+		public DrawAxis Axis = DrawAxis.Z;
+		/// the distance by which to push the circle on the draw axis
+		[Tooltip("the distance by which to push the circle on the draw axis")]
+		public float NormalOffset = 0;
+        
+		[Header("Geometry")]
+		/// the amount of segments on the line renderer. More segments, more smoothness, more performance cost
+		[Tooltip("the amount of segments on the line renderer. More segments, more smoothness, more performance cost")]
+		[Range(0, 2000)]
+		public int PositionsCount = 60;
+     
+		[Header("Shape")]
+		/// the length of the circle's horizontal radius
+		[Tooltip("the length of the circle's horizontal radius")]
+		public float HorizontalRadius = 10;
+		/// the length of the circle's vertical radius
+		[Tooltip("the length of the circle's vertical radius")]
+		public float VerticalRadius = 10;
+
+		[Header("Debug")]
+		/// if this is true, the circle will be redrawn every time you change a value in the inspector, otherwise you'll have to call the DrawCircle method (or press the debug button below)
+		[Tooltip("if this is true, the circle will be redrawn every time you change a value in the inspector, otherwise you'll have to call the DrawCircle method (or press the debug button below)")]
+		public bool AutoRedrawOnValuesChange = false;
+		/// a test button used to call the DrawCircle method
+		[MMInspectorButton("DrawCircle")]
+		public bool DrawCircleButton;
+        
+		protected LineRenderer _line;
+		protected Vector3 _newPosition;
+		protected float _angle, _x, _y, _z;
+     
+		/// <summary>
+		/// On Awake we initialize our line renderer and draw our circle
+		/// </summary>
+		protected virtual void Awake()
+		{
+			Initialization();
+			DrawCircle();
+		}
+
+		/// <summary>
+		/// Grabs the line renderer and sets it up
+		/// </summary>
+		protected virtual void Initialization()
+		{
+			_line = gameObject.GetComponent<LineRenderer>();
+			_line.positionCount = PositionsCount + 1;
+			_line.useWorldSpace = false;
+		}
+     
+		/// <summary>
+		/// Sets all point positions for our line renderer
+		/// </summary>
+		public virtual void DrawCircle()
+		{
+			_angle = 0f;
+			_z = NormalOffset;
+            
+			switch(Axis)
+			{
+				case DrawAxis.X: 
+					DrawCircleX();
+					break;
+				case DrawAxis.Y: 
+					DrawCircleY();
+					break;
+				case DrawAxis.Z: 
+					DrawCircleZ();
+					break;
+			}
+		}
+
+		/// <summary>
+		/// Computes the x position of the new point
+		/// </summary>
+		/// <returns></returns>
+		protected virtual float ComputeX()
+		{
+			return Mathf.Cos (Mathf.Deg2Rad * _angle) * HorizontalRadius;
+		}
+
+		/// <summary>
+		/// Computes the y position of the new point
+		/// </summary>
+		/// <returns></returns>
+		protected virtual float ComputeY()
+		{
+			return Mathf.Sin (Mathf.Deg2Rad * _angle) * VerticalRadius;
+		}
+
+		/// <summary>
+		/// Draws a circle on the x axis
+		/// </summary>
+		protected virtual void DrawCircleX()
+		{
+			for (int i = 0; i < (PositionsCount + 1); i++)
+			{
+				_x = ComputeX();
+				_y = ComputeY();
+                
+				_newPosition.x = _z;
+				_newPosition.y = _y;
+				_newPosition.z = _x;
+				_line.SetPosition(i, _newPosition);
+     
+				_angle += (360f / PositionsCount);
+			}
+		}
+
+		/// <summary>
+		/// Draws a circle on the y axis
+		/// </summary>
+		protected virtual void DrawCircleY()
+		{
+			for (int i = 0; i < (PositionsCount + 1); i++)
+			{
+				_x = ComputeX();
+				_y = ComputeY();
+                
+				_newPosition.x = _y;
+				_newPosition.y = _z;
+				_newPosition.z = _x;
+				_line.SetPosition(i, _newPosition);
+     
+				_angle += (360f / PositionsCount);
+			}
+		}
+
+		/// <summary>
+		/// Draws a circle on the z axis
+		/// </summary>
+		protected virtual void DrawCircleZ()
+		{
+			for (int i = 0; i < (PositionsCount + 1); i++)
+			{
+				_x = ComputeX();
+				_y = ComputeY();
+                
+				_newPosition.x = _x;
+				_newPosition.y = _y;
+				_newPosition.z = _z;
+				_line.SetPosition(i, _newPosition);
+     
+				_angle += (360f / PositionsCount);
+			}
+		}
+
+		/// <summary>
+		/// On Validate we redraw our circle if needed
+		/// </summary>
+		protected virtual void OnValidate()
+		{
+			if (AutoRedrawOnValuesChange)
+			{
+				DrawCircle();
+			}
+		}
+	}
+}