public AlphaSplatTerrainConfig(string title, AutoSplatRules autoSplatRules, MosaicDescription srcdesc)
{
InitTextureNames();
// Override texture names from rules, if applicable
for (int i = 0; i < autoSplatRules.layerTextureNames.Length; i++)
{
if (!string.IsNullOrEmpty(autoSplatRules.layerTextureNames[i]))
{
layerTextureNames[i] = autoSplatRules.layerTextureNames[i];
}
}
// Create alpha map texture mosaics
for (int i = 0; i < NUM_ALPHA_MAPS; i++)
{
string alphaMapMosaicName = title + "AlphaMap" + i;
MosaicDescription desc = new MosaicDescription(alphaMapMosaicName, srcdesc);
alphaMapMosaicNames[i] = alphaMapMosaicName;
alphaMapMosaics[i] = new TextureMosaic(alphaMapMosaicName, 0, desc);
alphaMapMosaics[i].MosaicModificationStateChanged += Mosaic_OnMosaicModificationStateChanged;
alphaMapMosaics[i].MosaicChanged += Mosaic_OnMosaicChanged;
}
AutoSplatRules = autoSplatRules;
InitializeAutoSplatRules(srcdesc);
}
/// <summary>
/// Set the texture map for a point specified by world coordinates.
/// The 8-byte array is map. The map can have 8 possible
/// mappings associated with it with one byte per map. Ultimately, the
/// first 4 bytes correspond with Alpha Map 0 and the latter 4 bytes
/// correspond with Alpha Map 1.
/// </summary>
/// <param name="worldXMeters"></param>
/// <param name="worldZMeters"></param>
/// <param name="textureMap"></param>
/// <returns></returns>
public void SetWorldTextureMap(int worldXMeters, int worldZMeters, byte[] textureMap)
{
for (int i = 0; i < alphaMapMosaics.Length; i++)
{
byte[] mosaicAlphaMap = new byte[4];
Array.Copy(textureMap, i * 4, mosaicAlphaMap, 0, 4);
TextureMosaic alphaMapMosaic = alphaMapMosaics[i];
alphaMapMosaic.SetWorldTextureMap(worldXMeters, worldZMeters, mosaicAlphaMap);
}
}
/// <summary>
/// Get the texture map for a point specified by world coordinates
/// A 8-byte array is returned as the map. The map can have 8 possible
/// mappings associated with it with one byte per map. Ultimately, the
/// first 4 bytes correspond with Alpha Map 0 and the latter 4 bytes
/// correspond with Alpha Map 1.
/// </summary>
/// <param name="worldXMeters"></param>
/// <param name="worldZMeters"></param>
/// <returns></returns>
public byte[] GetWorldTextureMap(int worldXMeters, int worldZMeters)
{
byte[] textureMap = new byte[MAX_LAYER_TEXTURES];
for (int i = 0; i < alphaMapMosaics.Length; i++)
{
TextureMosaic alphaMapMosaic = alphaMapMosaics[i];
byte[] mosaicAlphaMap = alphaMapMosaic.GetWorldTextureMap(worldXMeters, worldZMeters);
Array.Copy(mosaicAlphaMap, 0, textureMap, i * 4, 4);
}
return(textureMap);
}
protected void BuildMaterial()
{
// If the highlight type changes, we need to use a different shader, so we load a
// different material to go with it.
if (typeChange)
{
if (material != null)
{
//LogManager.Instance.Write("Free Material: {0}", material.Name);
MaterialManager.Instance.Unload(material);
material.Dispose();
material = null;
}
materialName = String.Format("AlphaSplat-{0}-{1}-{2}", pageX, pageZ, HighlightTypeString);
//LogManager.Instance.Write("Create Material: {0}", materialName);
Material tmpMaterial = MaterialManager.Instance.GetByName(HighlightMaterialName(highlightType));
material = tmpMaterial.Clone(materialName);
typeChange = false;
}
Technique tech = material.GetTechnique(0);
material.Load();
if (tech.IsSupported)
{
Pass pass = tech.GetPass(0);
// set the highlight mask texture
int size = TerrainManager.Instance.PageSize;
pass.VertexProgramParameters.SetNamedConstant("pageSize", new Vector3(size * TerrainManager.oneMeter, size * TerrainManager.oneMeter, size * TerrainManager.oneMeter));
if (highlightType != TerrainPage.PageHilightType.None)
{
pass.GetTextureUnitState(11).SetTextureName(highlightMask.Name);
}
//Page.SetShadeMask(hilightMaterial, 4);
int pageSize = TerrainManager.Instance.PageSize;
for (int index = 0; index < AlphaSplatTerrainConfig.NUM_ALPHA_MAPS; index++)
{
TextureMosaic alphaMap = config.GetAlphaMap(index);
if (alphaMap != null)
{
// pass in the alpha texture names and the texture coord adjustment params.
// The coord adjustment params are used to convert from a page relative texture
// coordinate to the appropriate coords for the alpha texture.
float u1, u2, v1, v2;
string alphaTextureName = alphaMap.GetTexture(
pageX * pageSize, pageZ * pageSize, pageSize, pageSize,
out u1, out v1, out u2, out v2);
pass.GetTextureUnitState(index).SetTextureName(alphaTextureName);
string coordAdjustParam = "alpha" + index + "TextureCoordAdjust";
pass.VertexProgramParameters.SetNamedConstant(
coordAdjustParam, new Vector4(u1, u2 - u1, v1, v2 - v1));
//todo: Disabled page logging because it slows down terrain edits
// in the terrain editor. We should probably make this
// logging be conditional. -Trev 9/4/08
// LogManager.Instance.Write("page[{0},{1}]: {2} : ({3},{4}) : ({5},{6})", pageX, pageZ,
// alphaTextureName, u1, v1, u2, v2);
}
}
}
config.UpdateMaterial(material);
material.Load();
material.Lighting = true;
dirty = false;
}