public void Update(Vector2 tLevelMinPosition, IntVector2 tViewerPosGridCoords)
{
// update interior trim position based on viewer position
if (tViewerPosGridCoords.X == Settings.CentralSquareMax.X && tViewerPosGridCoords.Y == Settings.CentralSquareMin.Y)
m_eActiveInteriorTrim = WhichInteriorTrim.TopLeft;
else if (tViewerPosGridCoords.X == Settings.CentralSquareMin.X && tViewerPosGridCoords.Y == Settings.CentralSquareMin.Y)
m_eActiveInteriorTrim = WhichInteriorTrim.TopRight;
else if (tViewerPosGridCoords.X == Settings.CentralSquareMax.X && tViewerPosGridCoords.Y == Settings.CentralSquareMax.Y)
m_eActiveInteriorTrim = WhichInteriorTrim.BottomLeft;
else if (tViewerPosGridCoords.X == Settings.CentralSquareMin.X && tViewerPosGridCoords.Y == Settings.CentralSquareMax.Y)
m_eActiveInteriorTrim = WhichInteriorTrim.BottomRight;
Vector2 tWorldPosition = tLevelMinPosition;
m_tScaleFactor = new Vector4(
m_nGridSpacing,
m_nGridSpacing,
tWorldPosition.X,
tWorldPosition.Y);
}
private void CreateSharedVertexBuffer(GraphicsDevice pGraphicsDevice, WhichInteriorTrim eWhichInteriorTrim)
{
// create vertices
TerrainVertex.Shared[] pVertices = new TerrainVertex.Shared[Settings.INTERIOR_TRIM_NUM_VERTICES];
switch (eWhichInteriorTrim)
{
case WhichInteriorTrim.TopLeft:
PopulateVerticesTopLeft(pVertices);
break;
case WhichInteriorTrim.TopRight:
PopulateVerticesTopRight(pVertices);
break;
case WhichInteriorTrim.BottomLeft:
PopulateVerticesBottomLeft(pVertices);
break;
case WhichInteriorTrim.BottomRight:
PopulateVerticesBottomRight(pVertices);
break;
}
// create shared vertex buffer
m_pSharedVertexBuffers[(int) eWhichInteriorTrim] = new VertexBuffer(
pGraphicsDevice,
TerrainVertex.Shared.VertexDeclaration,
Settings.INTERIOR_TRIM_NUM_VERTICES,
BufferUsage.None);
m_pSharedVertexBuffers[(int) eWhichInteriorTrim].SetData(pVertices);
}
