void BuildTerrain()
{
terrainMaterial = ResourceManager.Inst.GetMaterial("NULL");
Texture2D[] blendTextures = new Texture2D[blendMaps.Length];
for(int i = 0; i < blendTextures.Length; i++)
blendTextures[i] = blendMaps[i].GetTexture();
clips = new Clipmap[L];
for (int i = 0; i < L; i++)
clips[i] = new Clipmap(i, this);
terrainElement = new TerrainRenderElement();
terrainElement.clips = clips;
terrainElement.N = this.N;
terrainElement.BlendMaps = blendTextures;
terrainElement.NormalMap = normalTexture;
}
/// <summary>
/// Updates the whole indexarray.
/// </summary>
/// <param name="nextFinerLevel"></param>
/// <param name="frustum"></param>
public void UpdateIndices(Clipmap nextFinerLevel)
{
// set the stripindex to zero. We start count vertices from here.
// The stripindex will tell us how much of the array is used.
stripIndex = 0;
#region Fill MxM Blocks
// MxM Block 1
Fill_Block(ClipRegion.Left,
ClipRegion.Left + Mm1G,
ClipRegion.Top,
ClipRegion.Top + Mm1G);
// MxM Block 2
Fill_Block(ClipRegion.Left + Mm1G,
ClipRegion.Left + 2 * Mm1G,
ClipRegion.Top,
ClipRegion.Top + Mm1G);
// MxM Block 3
Fill_Block(ClipRegion.Right - 2 * Mm1G,
ClipRegion.Right - Mm1G,
ClipRegion.Top,
ClipRegion.Top + Mm1G);
// MxM Block 4
Fill_Block(ClipRegion.Right - Mm1G,
ClipRegion.Right,
ClipRegion.Top,
ClipRegion.Top + Mm1G);
// MxM Block 5
Fill_Block(ClipRegion.Left,
ClipRegion.Left + Mm1G,
ClipRegion.Top + Mm1G,
ClipRegion.Top + 2 * Mm1G);
// MxM Block 6
Fill_Block(ClipRegion.Right - Mm1G,
ClipRegion.Right,
ClipRegion.Top + Mm1G,
ClipRegion.Top + 2 * Mm1G);
// MxM Block 7
Fill_Block(ClipRegion.Left,
ClipRegion.Left + Mm1G,
ClipRegion.Bottom - 2 * Mm1G,
ClipRegion.Bottom - Mm1G);
// MxM Block 8
Fill_Block(ClipRegion.Right - Mm1G,
ClipRegion.Right,
ClipRegion.Bottom - 2 * Mm1G,
ClipRegion.Bottom - Mm1G);
// MxM Block 9
Fill_Block(ClipRegion.Left,
ClipRegion.Left + Mm1G,
ClipRegion.Bottom - Mm1G,
ClipRegion.Bottom);
// MxM Block 10
Fill_Block(ClipRegion.Left + Mm1G,
ClipRegion.Left + 2 * Mm1G,
ClipRegion.Bottom - Mm1G,
ClipRegion.Bottom);
// MxM Block 11
Fill_Block(ClipRegion.Right - 2 * Mm1G,
ClipRegion.Right - Mm1G,
ClipRegion.Bottom - Mm1G,
ClipRegion.Bottom);
// MxM Block 12
Fill_Block(ClipRegion.Right - Mm1G,
ClipRegion.Right,
ClipRegion.Bottom - Mm1G,
ClipRegion.Bottom);
#endregion
#region Fill Fixup Blocks
// Fixup Top
Fill_Block(ClipRegion.Left + 2 * Mm1G,
ClipRegion.Left + 2 * Mm1G + G2,
ClipRegion.Top,
ClipRegion.Top + Mm1G);
// Fixup Left
Fill_Block(ClipRegion.Left,
ClipRegion.Left + Mm1G,
ClipRegion.Top + 2 * Mm1G,
ClipRegion.Top + 2 * Mm1G + G2);
// Fixup Right
Fill_Block(ClipRegion.Right - Mm1G,
ClipRegion.Right,
ClipRegion.Top + 2 * Mm1G,
ClipRegion.Top + 2 * Mm1G + G2);
// Fixup Bottom
Fill_Block(ClipRegion.Left + 2 * Mm1G,
ClipRegion.Left + 2 * Mm1G + G2,
ClipRegion.Bottom - Mm1G,
ClipRegion.Bottom);
#endregion
#region Fill Interior Trim
if (nextFinerLevel != null)
{
if ((nextFinerLevel.ClipRegion.X - ClipRegion.X) / G == M)
{
if ((nextFinerLevel.ClipRegion.Y - ClipRegion.Y) / G == M)
{
// Upper Left L Shape
// Up
Fill_Block(ClipRegion.Left + Mm1G,
ClipRegion.Right - Mm1G,
ClipRegion.Top + Mm1G,
ClipRegion.Top + Mm1G + G);
// Left
Fill_Block(ClipRegion.Left + Mm1G,
ClipRegion.Left + Mm1G + G,
ClipRegion.Top + Mm1G + G,
ClipRegion.Bottom - Mm1G);
}
else
{
// Lower Left L Shape
// Left
Fill_Block(ClipRegion.Left + Mm1G,
ClipRegion.Left + Mm1G + G,
ClipRegion.Top + Mm1G,
ClipRegion.Bottom - Mm1G - G);
// Bottom
Fill_Block(ClipRegion.Left + Mm1G,
ClipRegion.Right - Mm1G,
ClipRegion.Bottom - Mm1G - G,
ClipRegion.Bottom - Mm1G);
}
}
else
{
if ((nextFinerLevel.ClipRegion.Y - ClipRegion.Y) / G == M)
{
// Upper Right L Shape
// Up
Fill_Block(ClipRegion.Left + Mm1G,
ClipRegion.Right - Mm1G,
ClipRegion.Top + Mm1G,
ClipRegion.Top + Mm1G + G);
// Right
Fill_Block(ClipRegion.Right - Mm1G - G,
ClipRegion.Right - Mm1G,
ClipRegion.Top + Mm1G + G,
ClipRegion.Bottom - Mm1G);
}
else
{
// Lower Right L Shape
// Right
Fill_Block(ClipRegion.Right - Mm1G - G,
ClipRegion.Right - Mm1G,
ClipRegion.Top + Mm1G,
ClipRegion.Bottom - Mm1G - G);
// Bottom
Fill_Block(ClipRegion.Left + Mm1G,
ClipRegion.Right - Mm1G,
ClipRegion.Bottom - Mm1G - G,
ClipRegion.Bottom - Mm1G);
}
}
}
#endregion
#region Fill Fine Inner Level
if (nextFinerLevel == null)
{
Fill_Block(ClipRegion.Left + Mm1G,
ClipRegion.Left + Mm1G + Parent.N / 2,
ClipRegion.Top + Mm1G,
ClipRegion.Top + Mm1G + Parent.N / 2);
Fill_Block(ClipRegion.Left + Mm1G + Parent.N / 2,
ClipRegion.Right - Mm1G,
ClipRegion.Top + Mm1G,
ClipRegion.Top + Mm1G + Parent.N / 2);
Fill_Block(ClipRegion.Left + Mm1G,
ClipRegion.Left + Mm1G + Parent.N / 2,
ClipRegion.Top + Mm1G + Parent.N / 2,
ClipRegion.Bottom - Mm1G);
Fill_Block(ClipRegion.Left + Mm1G + Parent.N / 2,
ClipRegion.Right - Mm1G,
ClipRegion.Top + Mm1G + Parent.N / 2,
ClipRegion.Bottom - Mm1G);
}
#endregion
}
