/// <summary>
/// 绘制网格
/// </summary>
/// <param name="mesh"></param>
public void DrawMesh(Mesh mesh)
{
int[] PaintSortList = new int[mesh.Surface.Count];
for (int i = 0; i < PaintSortList.Length; i++)
{
PaintSortList[i] = i;
}
System.Array.Sort(//对mesh中的网格绘制顺序排序，先绘制远处，再绘制近处
PaintSortList,
delegate(int i, int j) {
return
((ToWatcher(mesh.Vertex[mesh.Surface[i].VIndex[0]]) + ToWatcher(mesh.Vertex[mesh.Surface[i].VIndex[1]]) + ToWatcher(mesh.Vertex[mesh.Surface[i].VIndex[2]])
>
ToWatcher(mesh.Vertex[mesh.Surface[j].VIndex[0]]) + ToWatcher(mesh.Vertex[mesh.Surface[j].VIndex[1]]) + ToWatcher(mesh.Vertex[mesh.Surface[j].VIndex[2]])) ? -1 : 1);
}
);
RGB_D dcolor;
for (int i = 0; i < PaintSortList.Length; i++)
{
dcolor = new RGB_D(0, 0, 0);
foreach (ParallelLight amblight in AmbientLight)
{
dcolor += WorldModelRender.GetSurfaceLight(
mesh.Surface[PaintSortList[i]], amblight,
(camera.OPoint - mesh.Surface[PaintSortList[i]].Axis.OPoint).UnitVector()
);
}
FillTriangle(dcolor.ToColorRGB(), mesh.Vertex[mesh.Surface[PaintSortList[i]].VIndex[0]], mesh.Vertex[mesh.Surface[PaintSortList[i]].VIndex[1]], mesh.Vertex[mesh.Surface[PaintSortList[i]].VIndex[2]]);
}
}
public PolygonSurfaceType(List <int> _vIndex, RGB_D _BaseColor, BRDFunction _BRDFunc, ref List <Vector3> _Vertex)
{
VIndex = new int[_vIndex.Count];
_vIndex.CopyTo(VIndex, 0);
Axis = new FrameofAxis(_Vertex[VIndex[0]], _Vertex[VIndex[1]], _Vertex[VIndex[2]]);
BaseColor = _BaseColor;
BRDFunc = _BRDFunc;
IsIlluminated = false;
}
