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データ駆動な多角形の描画

Last updated at Posted at 2018-12-11

データ駆動な多角形の描画

備忘録です。
パラメーターUIの実装に使えるかも?

コード

DynamicPentagon.cs
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

/// <summary>
/// レーダーチャートの背景
/// </summary>
[RequireComponent(typeof(CanvasRenderer))]
[RequireComponent(typeof(RectTransform))]
[ExecuteInEditMode]
public class DynamicPentagon : Graphic
{
	protected virtual void Awake()
	{
		base.Awake();

		// 横に合わせる
		maxRadius = rectTransform.rect.width / 2.0f;
		deltaTheta = 360.0f / getVertexCount();
		v = UIVertex.simpleVert;
	}

	protected virtual void Update()
	{
#if UNITY_EDITOR
		yRate = rectTransform.rect.height / rectTransform.rect.width;
		maxRadius = rectTransform.rect.width / 2.0f;
		deltaTheta = 360.0f / getVertexCount();

		this.UpdateGeometry();
#endif
	}

	public void SetUp()
	{
		yRate = rectTransform.rect.height / rectTransform.rect.width;
		maxRadius = rectTransform.rect.width / 2.0f;
		deltaTheta = 360.0f / getVertexCount();

		this.UpdateGeometry();
	}

	protected override void OnPopulateMesh(VertexHelper vh)
	{
		// 初期化
		vh.Clear();

		// 点の計算
		for (int i = 0; i < getVertexCount(); i++)
		{
			tempVector.x = maxRadius * getVertexRate(i) * Mathf.Sin(Mathf.Deg2Rad * i * deltaTheta);
			tempVector.y = yRate * maxRadius * getVertexRate(i) * Mathf.Cos(Mathf.Deg2Rad * i * deltaTheta);
			v.color = pentagonBackgroundColor;
			v.position = tempVector;
			vh.AddVert(v);
		}

		// 中心
		v.position = Vector3.zero;
		vh.AddVert(v);

		// index生成
		for (int i = 0; i < getVertexCount(); i++)
		{
			vh.AddTriangle(
				i,
				(i + 1) % getVertexCount(),
				getVertexCount()
			);
		}
	}

	protected virtual float getVertexRate(int index)
	{
		return 1.0f;
	}

	protected virtual int getVertexCount()
	{
		return 3;
	}

	// 最大半径(Rect.widthの半分)
	private float maxRadius;
	private float deltaTheta;
	private Vector3 tempVector;
	private UIVertex v;
	private float yRate;

	[SerializeField]
	private Color32 pentagonBackgroundColor = Color.red;
}
StatusParameter.cs
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class StatusParameter : DynamicPentagon
{
	protected override void Awake()
	{
		base.Awake();
		SetUp();
	}

	protected override float getVertexRate(int index)
	{
		return m_ParameterList[index].value;
	}

	protected override int getVertexCount()
	{
		return m_ParameterList.Count;
	}

	[System.Serializable]
	public struct Parameter
	{
		public Parameter( string parameterName, float value )
		{
			this.parameterName = parameterName;
			this.value = value;
		}
		public string parameterName;

		[Range(0.0f, 1.0f)]
		public float value;
	}

	[SerializeField]
	public List<Parameter> m_ParameterList = new List<Parameter>
	{
		new Parameter( "体力", 1.0f),
		new Parameter( "防御", 0.5f),
		new Parameter( "攻撃力", 0.8f),
		new Parameter( "防御力", 1.0f),
		new Parameter( "素早さ", 0.1f),
	};
}

全パラメータMAX時

スクリーンショット 2018-12-11 18.28.41.png

スクリーンショット 2018-12-11 18.28.44.png

パラメータばらばら

スクリーンショット 2018-12-11 18.29.29.png

スクリーンショット 2018-12-11 18.29.32.png

TODO

もうちょっとリッチにしたい・・
アニメーション付けたりとかアウトライン付けたりとか・・

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