public MeshFromHeightmap3(MeshFromHeightmap3 copy)
{
Heightmap = (Content.DataLink <Texel.R32F[, ]>)copy.Heightmap.Clone();
HeightmapLayout = copy.HeightmapLayout;
Grid = (Grid)copy.Grid.Clone();
Height = copy.Height;
PointSample = copy.PointSample;
HeightmapReadPosition = copy.HeightmapReadPosition;
}
public static Mesh Construct(MeshFromHeightmap3 metaResource)
{
var indexedPlane = Construct(metaResource.Grid);
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];
// 0 -> Heightmap size
Vector2 relativePosition = Common.Math.ToVector2(v.Position + metaResource.HeightmapReadPosition) -
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);
}
else
{
height = TextureUtil.HeightmapSample(metaResource.Heightmap.Data, relativePosition, true);
}
float h = metaResource.Grid.Position.Z + height.R * metaResource.Height;
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 static Mesh Construct(MeshFromHeightmap3 metaResource)
{
var indexedPlane = Construct(metaResource.Grid);
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];
// 0 -> Heightmap size
Vector2 relativePosition = Common.Math.ToVector2(v.Position + metaResource.HeightmapReadPosition) -
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);
else
height = TextureUtil.HeightmapSample(metaResource.Heightmap.Data, relativePosition, true);
float h = metaResource.Grid.Position.Z + height.R * metaResource.Height;
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 MeshFromHeightmap3(MeshFromHeightmap3 copy)
{
Heightmap = (Content.DataLink<Texel.R32F[,]>)copy.Heightmap.Clone();
HeightmapLayout = copy.HeightmapLayout;
Grid = (Grid)copy.Grid.Clone();
Height = copy.Height;
PointSample = copy.PointSample;
HeightmapReadPosition = copy.HeightmapReadPosition;
}