使用以下库： qrgen-1.2，zxing-core-1.7，和 zxing-j2se-1.7我生成了QRCode：
ByteArrayOutputStream out = QRCode.from(output.toString()).withSize(1000,1000).to(ImageType.PNG).stream();
FileOutputStream fout = new FileOutputStream(new File("D:\\QR_Code.JPG"));
fout.write(out.toByteArray());
fout.flush();
fout.close();
我打算用它做的是将代码发送到接受java.awt.Image的方法。 如何在不首先创建QRCode.JPG的情况下将QRCode类的实例转换为Image类的实例？正如我所看到的，这个库并没有为用户提供可以实现这一目标的方法，所以它有可能吗？可能我可以将流转换为Image吗？
答案 0 :(得分：0)
只需将qr代码写入字节数组输出流，然后使用流中的字节数组创建Shader "Outlined/Silhouette2" {
Properties
{
_Color("Color", Color) = (0,0,0,1)
_MainColor("Main Color", Color) = (1,1,1,1)
_Thickness("Thickness", float) = 4
_MainTex("Main Texture", 2D) = "white" {}
}
SubShader
{
Tags{ "Queue" = "Geometry" "IgnoreProjector" = "True" "RenderType" = "Transparent" }
Blend SrcAlpha OneMinusSrcAlpha
Cull Back
ZTest always
Pass
{
Stencil{
Ref 1
Comp always
Pass replace
}
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#pragma multi_compile_fog
#include "UnityCG.cginc"
struct v2g
{
float4 pos : SV_POSITION;
float2 uv : TEXCOORD0;
float3 viewT : TANGENT;
float3 normals : NORMAL;
};
struct g2f
{
float4 pos : SV_POSITION;
float2 uv : TEXCOORD0;
float3 viewT : TANGENT;
float3 normals : NORMAL;
};
float4 _LightColor0;
sampler2D _MainTex;
float4 _MainColor;
v2g vert(appdata_base v)
{
v2g OUT;
OUT.pos = mul(UNITY_MATRIX_MVP, v.vertex);
OUT.uv = v.texcoord;
OUT.normals = v.normal;
OUT.viewT = ObjSpaceViewDir(v.vertex);
return OUT;
}
half4 frag(g2f IN) : COLOR
{
//this renders nothing, if you want the base mesh and color
//fill this in with a standard fragment shader calculation
float4 texColor = tex2D(_MainTex, IN.uv);
float3 normal = mul(float4(IN.normals, 0.0), _Object2World).xyz;
float3 normalDirection = normalize(normal);
float3 lightDirection = normalize(_WorldSpaceLightPos0.xyz * -1);
float3 diffuse = _LightColor0.rgb * _MainColor.rgb * max(0.0, dot(normalDirection, lightDirection));
texColor = float4(diffuse,1) * texColor;
//
//return texColor;
return float4(0, 0, 0, 0);
}
ENDCG
}
Pass
{
Stencil{
Ref 0
Comp equal
}
CGPROGRAM
#include "UnityCG.cginc"
#pragma target 4.0
#pragma vertex vert
#pragma geometry geom
#pragma fragment frag
half4 _Color;
float _Thickness;
struct v2g
{
float4 pos : SV_POSITION;
float2 uv : TEXCOORD0;
float4 local_pos: TEXCOORD1;
float3 viewT : TANGENT;
float3 normals : NORMAL;
};
struct g2f
{
float4 pos : SV_POSITION;
float2 uv : TEXCOORD0;
float3 viewT : TANGENT;
float3 normals : NORMAL;
};
v2g vert(appdata_base v)
{
v2g OUT;
OUT.pos = mul(UNITY_MATRIX_MVP, v.vertex);
OUT.local_pos = v.vertex;
OUT.uv = v.texcoord;
OUT.normals = v.normal;
OUT.viewT = ObjSpaceViewDir(v.vertex);
return OUT;
}
[maxvertexcount(12)]
void geom(triangle v2g IN[3], inout TriangleStream<g2f> triStream)
{
g2f OUT;
OUT.pos = IN[0].pos;
OUT.uv = IN[0].uv;
OUT.viewT = IN[0].viewT;
OUT.normals = IN[0].normals;
triStream.Append(OUT);
OUT.pos = IN[1].pos;
OUT.uv = IN[1].uv;
OUT.viewT = IN[1].viewT;
OUT.normals = IN[1].normals;
triStream.Append(OUT);
OUT.pos = IN[2].pos;
OUT.uv = IN[2].uv;
OUT.viewT = IN[2].viewT;
OUT.normals = IN[2].normals;
triStream.Append(OUT);
}
half4 frag(g2f IN) : COLOR
{
_Color.a = 1;
return _Color;
}
ENDCG
}
}
FallBack "Diffuse"
}
。
BufferedImage