public static Mesh Construct(MeshFromHeightmap2 metaResource)
{
var indexedPlane = Construct(metaResource.Grid);
/*indexedPlane.Transform(metaResource.CombinedWorld);
* var invWorld = Matrix.Invert(metaResource.CombinedWorld);*/
var invCombinedWorld = Matrix.Invert(metaResource.CombinedWorld);
int heightMapHeight = metaResource.Heightmap.Data.GetLength(0);
int heightMapWidth = metaResource.Heightmap.Data.GetLength(1);
Vector2 gridStep = new Vector2(metaResource.HeightmapLayout.Width / heightMapWidth,
metaResource.HeightmapLayout.Height / heightMapHeight);
for (int i = 0; i < indexedPlane.VertexBuffer.Count; i++)
{
var v = indexedPlane.VertexBuffer[i];
var transformedPos = Vector3.TransformCoordinate(v.Position, metaResource.CombinedWorld);
// 0 -> Heightmap size
Vector2 relativePosition = Common.Math.ToVector2(transformedPos) -
new Vector2(metaResource.HeightmapLayout.X, metaResource.HeightmapLayout.Y);
// 0 -> 1
relativePosition.X /= metaResource.HeightmapLayout.Width;
relativePosition.Y /= metaResource.HeightmapLayout.Height;
Texel.R32F height;
if (metaResource.PointSample)
{
height = TextureUtil.HeightmapPointSample(metaResource.Heightmap.Data, relativePosition);
}
//{
// int iu = (int)(relativePosition.X * heightMapWidth);
// int iv = (int)(relativePosition.Y * heightMapHeight);
// height = metaResource.Heightmap.Data[iv, iu];
// /*height = TextureUtil.PointSample(metaResource.Heightmap.Data, relativePosition.X,
// relativePosition.Y);*/
//}
else
{
height = TextureUtil.HeightmapSample(metaResource.Heightmap.Data, relativePosition, true);
}
float h = metaResource.Grid.Position.Z + height.R * metaResource.Height
- transformedPos.Z
//+ metaResource.CombinedWorld.M43
;
//h = Vector3.TransformCoordinate(Vector3.UnitZ * h, invCombinedWorld).Z;
v.Position = new Vector3(v.Position.X, v.Position.Y, h);
v.Normal = TextureUtil.NormalFromHeightmap(metaResource.Heightmap.Data,
relativePosition, gridStep, new Size(heightMapWidth, heightMapHeight));
indexedPlane.VertexBuffer[i] = v;
}
return(indexedPlane);
}
public MeshFromHeightmap2(MeshFromHeightmap2 copy)
{
Heightmap = (Content.DataLink <Texel.R32F[, ]>)copy.Heightmap.Clone();
HeightmapLayout = copy.HeightmapLayout;
Grid = (Grid)copy.Grid.Clone();
Height = copy.Height;
PointSample = copy.PointSample;
CombinedWorld = copy.CombinedWorld;
}
public static Mesh Construct(MeshFromHeightmap2 metaResource)
{
var indexedPlane = Construct(metaResource.Grid);
/*indexedPlane.Transform(metaResource.CombinedWorld);
var invWorld = Matrix.Invert(metaResource.CombinedWorld);*/
var invCombinedWorld = Matrix.Invert(metaResource.CombinedWorld);
int heightMapHeight = metaResource.Heightmap.Data.GetLength(0);
int heightMapWidth = metaResource.Heightmap.Data.GetLength(1);
Vector2 gridStep = new Vector2(metaResource.HeightmapLayout.Width / heightMapWidth,
metaResource.HeightmapLayout.Height / heightMapHeight);
for (int i = 0; i < indexedPlane.VertexBuffer.Count; i++)
{
var v = indexedPlane.VertexBuffer[i];
var transformedPos = Vector3.TransformCoordinate(v.Position, metaResource.CombinedWorld);
// 0 -> Heightmap size
Vector2 relativePosition = Common.Math.ToVector2(transformedPos) -
new Vector2(metaResource.HeightmapLayout.X, metaResource.HeightmapLayout.Y);
// 0 -> 1
relativePosition.X /= metaResource.HeightmapLayout.Width;
relativePosition.Y /= metaResource.HeightmapLayout.Height;
Texel.R32F height;
if (metaResource.PointSample)
height = TextureUtil.HeightmapPointSample(metaResource.Heightmap.Data, relativePosition);
//{
// int iu = (int)(relativePosition.X * heightMapWidth);
// int iv = (int)(relativePosition.Y * heightMapHeight);
// height = metaResource.Heightmap.Data[iv, iu];
// /*height = TextureUtil.PointSample(metaResource.Heightmap.Data, relativePosition.X,
// relativePosition.Y);*/
//}
else
height = TextureUtil.HeightmapSample(metaResource.Heightmap.Data, relativePosition, true);
float h = metaResource.Grid.Position.Z + height.R * metaResource.Height
- transformedPos.Z
//+ metaResource.CombinedWorld.M43
;
//h = Vector3.TransformCoordinate(Vector3.UnitZ * h, invCombinedWorld).Z;
v.Position = new Vector3(v.Position.X, v.Position.Y, h);
v.Normal = TextureUtil.NormalFromHeightmap(metaResource.Heightmap.Data,
relativePosition, gridStep, new Size(heightMapWidth, heightMapHeight));
indexedPlane.VertexBuffer[i] = v;
}
return indexedPlane;
}
public MeshFromHeightmap2(MeshFromHeightmap2 copy)
{
Heightmap = (Content.DataLink<Texel.R32F[,]>)copy.Heightmap.Clone();
HeightmapLayout = copy.HeightmapLayout;
Grid = (Grid)copy.Grid.Clone();
Height = copy.Height;
PointSample = copy.PointSample;
CombinedWorld = copy.CombinedWorld;
}
