Shader "Custom/TexBugSquare" {
Properties{
_MainTex("MainTex",2D) = "white"{}
_Height("Height",float) = 1.8//アバターの足裏をゼロとした場合の頭頂部の位置、つまり身長
_Width("Width",float) = 0.3//アバターの中心からの横幅
_Digit("Digit",Range(1,10)) = 1
_ChangeFrec("ChangeFrec",Range(1,500)) = 10 //バグ発生個所の変更頻度
_MaxBoxSize("MaxBoxSize",Range(0,0.1)) = 0.05
_MaxNoiseLen("MaxNoiseLen",Range(0,0.5)) = 0.1
_BugMacroNum("BugMacroNum",Range(1,10)) = 10
_BugMicroNum("BugMicroNum",Range(1,50)) = 5
_BugLineColor("BugLineColor",Color) = (1,0,0,1)
_BugLineWidth("BugLineWidth",Range(0,0.01)) = 0.01
_BugSpd("BugSpd",Range(1,10)) = 3
}
SubShader{
Tags{"RenderType"="Opaque" "DisableBatching"="true"}
//透明部分のあるテクスチャを使う場合
//Tags{"Queue" = "Transparent" "RenderType" = "Transparent"}
//Blend SrcAlpha OneMinusSrcAlpha
Pass{
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#include "UnityCG.cginc"
#include "ParinNoise.cginc"
struct appdata {
float4 vertex:POSITION;
float4 uv:TEXCOORD0;
};
struct v2f {
float4 pos:SV_POSITION;
float4 uv:TEXCOORD0;
float4 lpos:TEXCOORD1;
};
float _PI = 3.141592;
sampler2D _MainTex;
float _Height;
float _Width;
float _Digit;
float _ChangeFrec;
float _MaxBoxSize;
float _MaxNoiseLen;
int _BugMicroNum;
float4 _BugLineColor;
float _BugLineWidth;
float _BugSpd;
float _BugMacroNum;
v2f vert(appdata v){
v2f o;
o.lpos = v.vertex;
o.pos = UnityObjectToClipPos(v.vertex);
o.uv = v.uv;
return o;
}
//0~1を返す
float rand(float2 co){
return frac(sin(dot(co.xy ,float2(12.9898,78.233))) * 43758.5453);
}
float noise(float2 xy){
return frac(sin(dot(xy, float2(1000, 1000))) * 2000);
}
float NormalizeX(float x){
return x/_Width;
}
//-1~1に
float NormalizeY(float y){
return y/_Height;
}
float Pow(float val,int times){
float res = 1;
for(int k=0;k<times;k++){
res *= val;
}
return res;
}
float GetNumByTime(float digit,float change_frec){
int d = trunc(digit);
float tm = _Time.y/change_frec*Pow(10,d);
float mx = trunc(tm);//小数部3桁を整数部に移動
return frac(mx/10000);//整数部5桁を小数部に移動しそれのみxに代入
}
//-1~1の値を取る
float2 BugCenterPos(float av){
float x = rand(GetNumByTime(_Digit,_ChangeFrec)+av);
float y = rand(float2(x,x));
x = (x - 0.5)*2;
y = (y - 0.5)*2;
//return float2(0,0);
return float2(x,y);
}
//箱の距離関数
float rectangle(float2 p, float2 size){
return max(abs(p.x) - size.x/_Width, abs(p.y) - size.y/_Height);
}
float4 frag(v2f i) :SV_Target {
float nx = NormalizeX(i.lpos.x);
float ny = NormalizeY(i.lpos.y);
int BN = trunc(_BugMacroNum);
for(int j=0;j<trunc(BN);j++){
float2 o_cpos = BugCenterPos(rand(j));
float time = GetNumByTime(_Digit,_ChangeFrec/_BugSpd);
//[unroll(30)]//unroll内の数値は_BugMicroNumに合わせて置き換える
for(int k=0;k<_BugMicroNum;k++){
float2 cpos = o_cpos;
int f = k - k % 2;
cpos.x = o_cpos.x + (noise(float2(rand(f+0.1+time),rand(f+0.2+time)))-0.5)*2*_MaxNoiseLen/_Width;
cpos.y = o_cpos.y + (noise(float2(rand(f+0.3+time),rand(f+0.4+time)))-0.5)*2*_MaxNoiseLen/_Height;
float mx = abs(rand(f+0.5+time) - rand(f+0.6+time))*_MaxBoxSize;
float ActBoxSizeX = _MaxBoxSize - mx;
float my = abs(rand(f+0.7+time) - rand(f+0.8+time))*_MaxBoxSize;
float ActBoxSizeY = _MaxBoxSize - my;
float2 p = float2(cpos.x-nx,cpos.y-ny);
float leng;
leng = rectangle(p,float2(ActBoxSizeX,ActBoxSizeY));
if(leng<0.00001) clip(-1);
leng = rectangle(p,float2(ActBoxSizeX+_BugLineWidth,ActBoxSizeY+_BugLineWidth));
if(leng<0.00001) return _BugLineColor;
}
}
return tex2D(_MainTex,i.uv);
//clip(-1);
}
ENDCG
}//Pass
}//SubShader
FallBack "Diffuse"
}
