private async Task <TerrainDetailElement> GenerateTerrainDetailElementAsync(
MyRectangle queryArea, TerrainCardinalResolution cardinalResolution, CornersMergeStatus requiredMerge,
Func <MyRectangle, TerrainCardinalResolution, TextureWithSize, Task <TextureWithSize> > cornerMergingFunc,
Func <MyRectangle, TerrainCardinalResolution, RequiredCornersMergeStatus, Task <TextureWithSize> > generateElementFunc
)
{
var newTerrainArea = _alignmentCalculator.ComputeAlignedTerrainArea(queryArea, cardinalResolution);
RetrivedTerrainDetailTexture texture = null;
CornersMergeStatus outCornersMergeStatus;
TextureWithSize outTexture = null;
var baseTexture = await generateElementFunc(newTerrainArea, cardinalResolution, RequiredCornersMergeStatus.NOT_MERGED);
if (requiredMerge == CornersMergeStatus.NOT_MERGED)
{
outTexture = baseTexture;
outCornersMergeStatus = CornersMergeStatus.NOT_MERGED;
}
else
{
outTexture = await cornerMergingFunc(queryArea, cardinalResolution, baseTexture);
outCornersMergeStatus = CornersMergeStatus.MERGED;
}
return(new TerrainDetailElement()
{
DetailArea = newTerrainArea,
Resolution = cardinalResolution,
Texture = outTexture,
CornersMergeStatus = outCornersMergeStatus
});
}
public InternalTerrainDetailElementToken(IntRectangle queryArea, TerrainCardinalResolution resolution, TerrainDescriptionElementTypeEnum type, CornersMergeStatus mergeStatus)
{
_queryArea = queryArea;
_resolution = resolution;
_type = type;
_mergeStatus = mergeStatus;
}
public override async Task <TerrainDetailElementOutput> RetriveTerrainDetailAsync(
TerrainDescriptionElementTypeEnum type, MyRectangle queryArea,
TerrainCardinalResolution resolution, RequiredCornersMergeStatus cornersMergeStatus)
{
TerrainDetailElement detailElement = null;
CornersMergeStatus status = CornersMergeStatus.MERGED;
if (cornersMergeStatus == RequiredCornersMergeStatus.NOT_MERGED)
{
status = CornersMergeStatus.NOT_MERGED;
}
if (type == TerrainDescriptionElementTypeEnum.HEIGHT_ARRAY)
{
detailElement = await _provider.GenerateHeightDetailElementAsync(queryArea, resolution, status);
}
else if (type == TerrainDescriptionElementTypeEnum.NORMAL_ARRAY)
{
detailElement = await _provider.GenerateNormalDetailElementAsync(queryArea, resolution, status);
}
else
{
Preconditions.Fail("Not supported type: " + type);
}
return(new TerrainDetailElementOutput()
{
TokenizedElement = new TokenizedTerrainDetailElement()
{
DetailElement = detailElement,
Token = null
},
UvBase = null
});
}
public async Task <TerrainDetailElement> GenerateNormalDetailElementAsync(MyRectangle queryArea,
TerrainCardinalResolution cardinalResolution, CornersMergeStatus requiredMerge)
{
return(await GenerateTerrainDetailElementAsync(queryArea, cardinalResolution, requiredMerge,
((rectangle, resolution, textureWithSize) => TaskUtils.MyFromResult(textureWithSize)), // we do not have to merge normals - just generate normals from merged heightmap!
_generator.GenerateNormalDetailElementAsync
));
}
public async Task <TerrainDetailElement> GenerateHeightDetailElementAsync(MyRectangle queryArea,
TerrainCardinalResolution cardinalResolution, CornersMergeStatus requiredMerge)
{
Func <MyRectangle, TerrainCardinalResolution, TextureWithSize, Task <TextureWithSize> > cornerMergingFunc = null;
if (_cornerMerger != null)
{
cornerMergingFunc = _cornerMerger.MergeHeightDetailCorners;
}
return(await GenerateTerrainDetailElementAsync(queryArea, cardinalResolution, requiredMerge,
cornerMergingFunc,
_generator.GenerateHeightDetailElementAsync
));
}
private InternalTerrainDetailElementToken GenerateInternalToken(
MyRectangle rect, TerrainCardinalResolution resolution, TerrainDescriptionElementTypeEnum type, CornersMergeStatus mergeStatus)
{
return(new InternalTerrainDetailElementToken(GenerateQuantisizedQueryRectangle(rect), resolution, type, mergeStatus));
}
