private static void GeneratePackTextureImpl(CNode node, ref PackTextureAttrSet packTextureAttrSet)
{
if (node != null &&
packTextureAttrSet != null &&
packTextureAttrSet.packTexture)
{
if (node.IsFilled)
{
TextureVertexAttr attri = node.refTextureInfo;
CalcVertexAtrribute(
packTextureAttrSet.packTexWidth,
packTextureAttrSet.packTexHeight,
ref attri
);
packTextureAttrSet.texVertexAttrList.Add(attri);
Fill2PackTexture(packTextureAttrSet.packTexture, attri);
}
if (node.leftChild != null)
{
GeneratePackTextureImpl(node.leftChild, ref packTextureAttrSet);
}
if (node.rightChild != null)
{
GeneratePackTextureImpl(node.rightChild, ref packTextureAttrSet);
}
}
}
public TextureVertexAttr GetTextureVertexAttr(string szSpriteName)
{
TextureVertexAttr ret = new TextureVertexAttr();
if (!string.IsNullOrEmpty(szSpriteName))
{
for (int i = 0; i < texVertexAttrList.Count; ++i)
{
var attr = texVertexAttrList[i];
if (attr.IsVaild &&
attr.spriteName.Equals(szSpriteName))
{
ret = attr;
break;
}
}
}
return(ret);
}
private static void Fill2PackTexture(Texture2D packTex, TextureVertexAttr vertexAttr)
{
if (packTex != null &&
vertexAttr.refTexture != null)
{
Texture2D refTex = vertexAttr.refTexture;
if (vertexAttr.blockDetail.IsFilped)
{
//非得这样填充才是对的，我也不知道为啥
for (int i = 0; i < refTex.width; ++i)
{
for (int j = 0; j < refTex.height; ++j)
{
Color color = refTex.GetPixel(i, j);
if (i < vertexAttr.blockDetail.rect.h &&
j < vertexAttr.blockDetail.rect.w)
{
packTex.SetPixel(vertexAttr.blockDetail.rect.x + j, vertexAttr.blockDetail.rect.y + i, color);
}
}
}
}
else
{
Color[] colors = refTex.GetPixels();
packTex.SetPixels(
vertexAttr.blockDetail.rect.x,
vertexAttr.blockDetail.rect.y,
vertexAttr.blockDetail.rect.w,
vertexAttr.blockDetail.rect.h,
colors
);
}
}
}
private static void CalcVertexAtrribute(
int packTexWidth, //图集大小
int packTexHeight,
ref TextureVertexAttr vertexAttr
)
{
if (!vertexAttr.IsVaild)
{
return;
}
if (vertexAttr.refTexture == null)
{
return;
}
int x = vertexAttr.blockDetail.rect.x;
int y = vertexAttr.blockDetail.rect.y;
int texWidth = vertexAttr.blockDetail.rect.w;
int texHeight = vertexAttr.blockDetail.rect.h;
int halfPackTexWidth = packTexWidth / 2;
int halfPackTexHeight = packTexHeight / 2;
//输出时，纹理四个角的相对位置
Vector2 packTextureBottomLeft = new Vector2(-halfPackTexWidth, -halfPackTexHeight);
Vector2 packTextureTopLeft = new Vector2(-halfPackTexWidth, halfPackTexHeight);
Vector2 packTextureTopRight = new Vector2(halfPackTexWidth, halfPackTexHeight);
Vector2 packTextureBottomRight = new Vector2(halfPackTexWidth, -halfPackTexHeight);
//顶点位置
if (vertexAttr.blockDetail.IsFilped)
{
Vector3 texBottomLeft = new Vector3(x - halfPackTexWidth, y - halfPackTexHeight, 0);
//填充顶点位置
vertexAttr.blockDetail.posBL = texBottomLeft;
vertexAttr.blockDetail.posTL = new Vector3(texBottomLeft.x, texBottomLeft.y + texHeight); //top-left ;
vertexAttr.blockDetail.posTR = new Vector3(texBottomLeft.x + texWidth, texBottomLeft.y + texHeight);
vertexAttr.blockDetail.posBR = new Vector3(texBottomLeft.x + texWidth, texBottomLeft.y);
Vector2 uvBottomLeft = new Vector2((float)x / (float)packTexWidth, (float)y / (float)packTexHeight);
Vector2 uvTopRight = new Vector2((float)(x + texWidth) / (float)packTexWidth, (float)(y + texHeight) / (float)packTexHeight);
//注意，这个是翻转了的
Vector2 ucTopLeft = new Vector2((float)uvTopRight.x, (float)uvBottomLeft.y);
Vector2 uvBottomRight = new Vector2((float)uvBottomLeft.x, (float)uvTopRight.y);
vertexAttr.blockDetail.uvBL = uvBottomLeft;
vertexAttr.blockDetail.uvTL = ucTopLeft;
vertexAttr.blockDetail.uvTR = uvTopRight;
vertexAttr.blockDetail.uvBR = uvBottomRight;
}
else
{
//填充顶点位置
Vector3 texBottomLeft = new Vector3(x - halfPackTexWidth, y - halfPackTexHeight, 0);
vertexAttr.blockDetail.posBL = texBottomLeft;
vertexAttr.blockDetail.posTR = new Vector3(texBottomLeft.x + texWidth, texBottomLeft.y + texHeight);
vertexAttr.blockDetail.posTL = new Vector3(texBottomLeft.x, texBottomLeft.y + texHeight); //top-left ;
vertexAttr.blockDetail.posBR = new Vector3(texBottomLeft.x + texWidth, texBottomLeft.y);
//uv使用的采样纹理
Vector2 uvBottomLeft = new Vector2((float)x / (float)packTexWidth, (float)y / (float)packTexHeight);
Vector2 uvTopRight = new Vector2((float)(x + texWidth) / (float)packTexWidth, (float)(y + texHeight) / (float)packTexHeight);
Vector2 ucTopLeft = new Vector2((float)uvBottomLeft.x, (float)uvTopRight.y);
Vector2 uvBottomRight = new Vector2((float)uvTopRight.x, (float)uvBottomLeft.y);
vertexAttr.blockDetail.uvBL = uvBottomLeft;
vertexAttr.blockDetail.uvTL = ucTopLeft;
vertexAttr.blockDetail.uvTR = uvTopRight;
vertexAttr.blockDetail.uvBR = uvBottomRight;
}
}
