46 lines
1.6 KiB
C#
46 lines
1.6 KiB
C#
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using UnityEngine;
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using System.Collections;
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public class RenderLineScaler : MonoBehaviour
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{
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private const string _textureName = "_MainTex";
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private Material _lineMaterial;
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// x = 初始z长度，y = 初始z缩放，
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private Vector2 _defaultScale;
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private Transform _cameraTrans;
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private float _uvSpeed;
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public void Init(Transform cameraTrans, float uvSpeed)
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{
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_cameraTrans = cameraTrans;
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_uvSpeed = uvSpeed;
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var meshRenderer = GetComponentInChildren<MeshRenderer>();
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transform.localRotation = Quaternion.identity;
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_lineMaterial = meshRenderer.material;
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var size = meshRenderer.bounds.size;
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_defaultScale = new Vector2(size.z, transform.localScale.z);
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}
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public void UpdatePoint(Vector3 source, Vector3 target)
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{
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transform.position = source;
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var delta = target - source;
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if (delta == Vector3.zero)
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transform.localScale = Vector3.zero;
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else
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{
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var z = delta.normalized;
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var y = _cameraTrans.position - (transform.position + delta * 0.5f);
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if (y == Vector3.zero)
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transform.localScale = Vector3.zero;
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else
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{
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var scale = delta.magnitude / _defaultScale.x * _defaultScale.y;
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transform.localScale = new Vector3(1f, 1f, scale);
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transform.localRotation = Quaternion.LookRotation(z, y);
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_lineMaterial.SetTextureOffset(_textureName, new Vector2(0f, Time.time * _uvSpeed));
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_lineMaterial.SetTextureScale(_textureName, new Vector2(1f, scale));
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}
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}
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}
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}
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