按钮UI动效
- 源代码：
- Shader：
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210Shader "Unlit/Btn1Shader"
{
Properties
{
_MainTex ("MainTex", 2D) = "white" {}
_MousePos ("MousePos", Vector) = (0,0,0,0)
_ColorRedius ("ColorRedius", float) = 40
_Color ("Color", Color) = (0,0,0,1)
_ColorOffset ("ColorOffset", Range(0, 1)) = 0
_ColorPow ("ColorPow", Range(0, 1)) = 0.5
_BorderTex ("BorderTex", 2D) = "white" {}
_BorderColorMul ("BorderColorPow", float) = 2
}
SubShader
{
Tags { "RenderType"="Transparent" "Queue"="Transparent"}
Blend SrcAlpha OneMinusSrcAlpha
// Alpha0
//Pass
//{
// CGPROGRAM
// #pragma vertex vert
// #pragma fragment frag
// #include "UnityCG.cginc"
// struct appdata
// {
// float4 vertex : POSITION;
// float2 uv : TEXCOORD0;
// };
// struct v2f
// {
// float2 uv : TEXCOORD0;
// float4 vertex : SV_POSITION;
// };
// sampler2D _MainTex;
// float4 _MainTex_ST;
// fixed4 _MousePos;
// float _ColorRedius;
// float _ColorOffset;
// v2f vert (appdata v)
// {
// v2f o;
// o.vertex = UnityObjectToClipPos(v.vertex);
// o.uv = TRANSFORM_TEX(v.uv, _MainTex);
// return o;
// }
// fixed4 frag (v2f i) : SV_Target
// {
// fixed4 col = tex2D(_MainTex, i.uv);
// float dis = distance(_MousePos.xy, i.vertex.xy);
// //if (dis < _ColorRedius)
// //{
// // col.a = 0;
// //}
// col.a = saturate(col.a - smoothstep(_ColorRedius, 0, dis) + _ColorOffset * sign(col.a-0.1));
// return col;
// }
// ENDCG
//}
// MainTex
Pass
{
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#include "UnityCG.cginc"
struct appdata
{
float4 vertex : POSITION;
float2 uv : TEXCOORD0;
};
struct v2f
{
float2 uv : TEXCOORD0;
float4 vertex : SV_POSITION;
};
sampler2D _MainTex;
float4 _MainTex_ST;
v2f vert (appdata v)
{
v2f o;
o.vertex = UnityObjectToClipPos(v.vertex);
o.uv = TRANSFORM_TEX(v.uv, _MainTex);
return o;
}
fixed4 frag (v2f i) : SV_Target
{
fixed4 col = tex2D(_MainTex, i.uv);
return col;
}
ENDCG
}
// MainColor
Pass
{
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#include "UnityCG.cginc"
struct appdata
{
float4 vertex : POSITION;
// 原图形状mask
float4 vert : POSITION;
float2 uv : TEXCOORD0;
};
struct v2f
{
float4 vertex : SV_POSITION;
float2 uv : TEXCOORD0;
float4 vert : TEXCOORD1;
};
fixed4 _MousePos;
float4 _Color;
float _ColorRedius;
float _ColorOffset;
float _ColorPow;
sampler2D _MainTex;
float4 _MainTex_ST;
v2f vert (appdata v)
{
v2f o;
o.vertex = UnityObjectToClipPos(v.vertex);
o.vert = UnityObjectToClipPos(v.vert);
o.uv = TRANSFORM_TEX(v.uv, _MainTex);
return o;
}
fixed4 frag (v2f i) : SV_Target
{
fixed4 col = tex2D(_MainTex, i.uv);
float dis = distance(_MousePos.xy, i.vertex.xy);
float4 addColor = _Color;
addColor.a = saturate(smoothstep(_ColorRedius, 0, dis) - _ColorOffset * sign(col.a-0.1));
addColor.a = addColor.a * col.a * _ColorPow;
return addColor;
}
ENDCG
}
// Border Color
Pass
{
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#include "UnityCG.cginc"
struct appdata
{
float4 vertexBorder : POSITION;
float2 uvBorder : TEXCOORD0;
};
struct v2f
{
float2 uvBorder : TEXCOORD0;
float4 vertexBorder : SV_POSITION;
};
sampler2D _BorderTex;
float4 _BorderTex_ST;
fixed4 _MousePos;
float _ColorRedius;
fixed4 _Color;
float _BorderColorMul;
v2f vert (appdata v)
{
v2f o;
o.vertexBorder = UnityObjectToClipPos(v.vertexBorder);
o.uvBorder = TRANSFORM_TEX(v.uvBorder, _BorderTex);
return o;
}
fixed4 frag (v2f i) : SV_Target
{
fixed4 col = tex2D(_BorderTex, i.uvBorder);
float dis = distance(_MousePos.xy, i.vertexBorder.xy);
col = col + sign(col.a) * smoothstep(_ColorRedius, 0, dis) * _Color * _BorderColorMul;
return col;
}
ENDCG
}
}
} - C#：
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117using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using TMPro;
using DG.Tweening;
using UnityEngine.EventSystems;
using UnityEngine.UI;
public class Btn1ComputeScript : MonoBehaviour
{
[SerializeField] private Material material;
[SerializeField] private List<Material> materials = new List<Material>(3);
[ColorUsageAttribute(true, true), SerializeField, Header("文字颜色")]
private List<Color> textColor_In = new List<Color>();
[ColorUsageAttribute(true, true), SerializeField, Header("文字颜色")]
private Color textColor_Out;
private List<bool> _isOverBtn = new List<bool>() { false, false, false};
[SerializeField] private List<GameObject> btns = new List<GameObject>(3);
private List<TextMeshProUGUI> _text = new List<TextMeshProUGUI>(3);
private void Start()
{
for (int i = 0; i < _isOverBtn.Count; i++)
{
_isOverBtn[i] = false;
_text.Add(btns[i].transform.GetChild(0).GetComponent<TextMeshProUGUI>());
btns[i].GetComponent<Image>().material = new Material(material);
materials.Add(btns[i].GetComponent<Image>().material);
materials[i].SetColor("_Color", textColor_In[i]);
}
}
private void Update()
{
for (int i = 0; i < materials.Count; i++)
{
materials[i].SetVector("_MousePos", Input.mousePosition);
}
if (IsPointerOverBtnUI() != -1 && !_isOverBtn[IsPointerOverBtnUI()])
{
_isOverBtn[IsPointerOverBtnUI()] = true;
Sequence textLightSq = DOTween.Sequence().SetUpdate(true).SetId(transform);
textLightSq.Append(_text[IsPointerOverBtnUI()].DOColor(textColor_In[IsPointerOverBtnUI()], .6f))
.Join(DOTween.To((v) =>
{
_text[IsPointerOverBtnUI()].outlineWidth = v;
}, 0, 0.01f, .6f) );
}
if (IsPointerOverBtnUI() == -1 && (_isOverBtn[0] || _isOverBtn[1] || _isOverBtn[2]))
{
Sequence textLightSq = DOTween.Sequence().SetUpdate(true).SetId(transform);
if (_isOverBtn[0])
{
textLightSq.Append(_text[0].DOColor(textColor_Out, .6f))
.Join(DOTween.To((v) =>
{
_text[0].outlineWidth = v;
}, 0.01f, 0, .6f));
}
else if (_isOverBtn[1])
{
textLightSq.Append(_text[1].DOColor(textColor_Out, .6f))
.Join(DOTween.To((v) =>
{
_text[1].outlineWidth = v;
}, 0.01f, 0, .6f));
}
else if (_isOverBtn[2])
{
textLightSq.Append(_text[2].DOColor(textColor_Out, .6f))
.Join(DOTween.To((v) =>
{
_text[2].outlineWidth = v;
}, 0.01f, 0, .6f));
}
for (int i = 0; i < _isOverBtn.Count; i++)
{
_isOverBtn[i] = false;
}
}
}
// return BtnIndex (0, 1, 2) or -1
private int IsPointerOverBtnUI()
{
PointerEventData eventData = new PointerEventData(EventSystem.current);
eventData.position = Input.mousePosition;
List<RaycastResult> results = new List<RaycastResult>();
EventSystem.current.RaycastAll(eventData, results);
for (int i = 0; i < results.Count; i++)
{
if (results[i].gameObject.name.Contains("Button_0"))
{
return 0;
}
else if (results[i].gameObject.name.Contains("Button_1"))
{
return 1;
}
else if (results[i].gameObject.name.Contains("Button_2"))
{
return 2;
}
}
return -1;
}
private void OnDestroy()
{
DOTween.Kill(transform);
}
}