public void ExtrudeZ(float z, int iType, ref MayeSurface ms)
{
uint nVertCount = (uint)(m_nLong * (ms.m_nLat));
ms.m_verts = new CustomVertex.PositionColored[nVertCount];
// short[6*nSlices*(nSegments-1)]
uint nIndexCount = (uint)((6 * (m_nLong - 1) * (ms.m_nLat - 1)));
// uint nSphere_index =(uint)(((nSlices) * 3) );
ms.m_indexes = new short[nIndexCount];
// Copier les vertex buffer existants dans la mayeSurface
int ms_i = 0;
float curz;
float deltaz;
for (int i = 0; i < m_nLong; i++)
{
deltaz = (z - m_verts[i].Z) / (ms.m_nLat - 1);
if (deltaz < 0)
{
curz = m_verts[i].Z;
deltaz = -deltaz;
}
else
{
curz = z;
}
for (int j = 0; j < ms.m_nLat; j++)
{
ms.m_verts[ms_i++] = new CustomVertex.PositionColored(new Vector3(m_verts[i].X, m_verts[i].Y, curz), m_verts[i].Color);
curz -= deltaz;
}
}
// calculer les index_buffer
ms_i = 0;
for (int j = 0; j < ms.m_nLat - 1; j++)
{
for (int i = 0; i < ms.m_nLong - 1; i++)
{
// upper
ms.m_indexes[ms_i++] = (short)(i + j * ms.m_nLong);
ms.m_indexes[ms_i++] = (short)((i + 1) + (j + 1) * ms.m_nLong);
ms.m_indexes[ms_i++] = (short)(i + (j + 1) * ms.m_nLong);
//lower
ms.m_indexes[ms_i++] = (short)(i + j * ms.m_nLong);
ms.m_indexes[ms_i++] = (short)((i + 1) + j * ms.m_nLong);
ms.m_indexes[ms_i++] = (short)((i + 1) + (j + 1) * ms.m_nLong);
}
}
ms.m_nFaceCount = 2 * (m_nLong - 1) * (ms.m_nLat - 1);
}
public void ExtrudeX(float x, int iType, ref MayeSurface ms)
{
uint nVertCount = (uint)(m_nLong * (ms.m_nLat));
ms.m_verts = new CustomVertex.PositionColored[nVertCount];
// short[6*nSlices*(nSegments-1)]
uint nIndexCount = (uint)((6 * (m_nLong - 1) * (ms.m_nLat - 1)));
// uint nSphere_index =(uint)(((nSlices) * 3) );
ms.m_indexes = new short[nIndexCount];
// Copier les vertex buffer existants dans la mayeSurface
int ms_i = 0;
int i = 0;
int j = 0;
float curx;
float deltax;
float deltaz = m_verts[m_nLong - 1].Z - m_verts[0].Z;
for (i = 0; i < m_nLong; i++)
{
deltax = (x - m_verts[i].X) / (ms.m_nLat - 1);
if (deltax < 0)
{
curx = m_verts[i].X;
deltax = -deltax;
}
else
{
curx = x;
}
for (j = 0; j < ms.m_nLat; j++)
{
ms.m_verts[ms_i].Position = new Vector3(curx, m_verts[i].Y, m_verts[i].Z);
ms.m_verts[ms_i++].Color = m_verts[i].Color;
curx -= deltax;
}
}
// calculer les index_buffer
ms_i = 0;
i = 0; j = 1;
ms.m_nFaceCount = 2 * (m_nLong - 1) * (ms.m_nLat - 1);
// for (int i = 0; i < ms.m_nLong - 1; j++)
while (ms_i < 3 * ms.m_nFaceCount)
{
// for (int j = 0; j < ms.m_nLat - 1; i++)
// {
// upper
// ms.m_indexes[ms_i++] = (short)(i + j * ms.m_nLong); //1
// ms.m_indexes[ms_i++] = (short)((i + 1) + (j + 1) * ms.m_nLong);//2
//ms.m_indexes[ms_i++] = (short)(i + (j + 1) * ms.m_nLong);//3
//lower
//ms.m_indexes[ms_i++] = (short)(i + j * ms.m_nLong);//1
//ms.m_indexes[ms_i++] = (short)((i + 1)+j * ms.m_nLong);//2
//ms.m_indexes[ms_i++] = (short)((i + 1) + (j + 1) * ms.m_nLong);//3
if (deltaz < 0)
{
ms.m_indexes[ms_i++] = (short)i; //1
ms.m_indexes[ms_i++] = (short)(i + ms.m_nLat); //3
ms.m_indexes[ms_i++] = (short)(i + 1); //2
ms.m_indexes[ms_i++] = (short)(i + 1); //1
ms.m_indexes[ms_i++] = (short)(i + ms.m_nLat); //3
ms.m_indexes[ms_i++] = (short)(i + ms.m_nLat + 1); //2
}
else
{
ms.m_indexes[ms_i++] = (short)i; //1
ms.m_indexes[ms_i++] = (short)(i + 1); //2
ms.m_indexes[ms_i++] = (short)(i + ms.m_nLat); //3
ms.m_indexes[ms_i++] = (short)(i + 1); //1
ms.m_indexes[ms_i++] = (short)(i + ms.m_nLat + 1); //2
ms.m_indexes[ms_i++] = (short)(i + ms.m_nLat); //3
}
i++;
if (i == (j * ms.m_nLat) - 1)
{
i++;
j++;
}
// }
}
}