public void RenderFan(
stVertexAtrribute center,
stVertexAtrribute bottomLeft,
stVertexAtrribute leftMid,
stVertexAtrribute topLeft,
stVertexAtrribute topMid,
stVertexAtrribute topRight,
stVertexAtrribute rightMid,
stVertexAtrribute bottomRight,
stVertexAtrribute bottomMid,
bool drawLeftMid,
bool drawTopMid,
bool drawRightMid,
bool drawBottomMid
)
{
//左边的三角形扇
if (drawLeftMid)
{
RenderTriangle(center, bottomLeft, leftMid);
RenderTriangle(center, leftMid, topLeft);
}
else
{
RenderTriangle(center, bottomLeft, topLeft);
}
//顶部的三角形扇
if (drawTopMid)
{
RenderTriangle(center, topLeft, topMid);
RenderTriangle(center, topMid, topRight);
}
else
{
RenderTriangle(center, topLeft, topRight);
}
//右边的三角形扇
if (drawRightMid)
{
RenderTriangle(center, topRight, rightMid);
RenderTriangle(center, rightMid, bottomRight);
}
else
{
RenderTriangle(center, topRight, bottomRight);
}
//下方的三角形扇
if (drawBottomMid)
{
RenderTriangle(center, bottomRight, bottomMid);
RenderTriangle(center, bottomMid, bottomLeft);
}
else
{
RenderTriangle(center, bottomRight, bottomLeft);
}
}
public void RenderTriangle(
stVertexAtrribute a,
stVertexAtrribute b,
stVertexAtrribute c
)
{
RenderVertex(a.mVerticeIdx, a.mVertice, a.mUV);
RenderVertex(b.mVerticeIdx, b.mVertice, b.mUV);
RenderVertex(c.mVerticeIdx, c.mVertice, c.mUV);
}