private bool InitializeBuffers(Device device)
{
try
{
// Calculate the number of the vertices in the terrain mesh.
VertexCount = (TerrainWidth - 1) * (TerrainHeight - 1) * 8;
// Set the index count to the same as the vertex count.
IndexCount = VertexCount;
// Create the vertex array.
var vertices = new ColorShader.Vertex[VertexCount];
// Create the index array.
var indices = new int[IndexCount];
var index = 0;
for (var j = 0; j < TerrainHeight - 1; j++)
{
for (var i = 0; i < TerrainWidth - 1; i++)
{
// LINE 1
// Upper left
vertices[index] = new ColorShader.Vertex()
{
position = new Vector3(i, 0, j + 1),
color = new Vector4(1, 1, 1, 1)
};
indices[index] = index++;
// Upper right
vertices[index] = new ColorShader.Vertex()
{
position = new Vector3(i + 1, 0, j + 1),
color = new Vector4(1, 1, 1, 1)
};
indices[index] = index++;
// LINE 2
// Upper right
vertices[index] = new ColorShader.Vertex()
{
position = new Vector3(i + 1, 0, j + 1),
color = new Vector4(1, 1, 1, 1)
};
indices[index] = index++;
// Bottom right
vertices[index] = new ColorShader.Vertex()
{
position = new Vector3(i + 1, 0, j),
color = new Vector4(1, 1, 1, 1)
};
indices[index] = index++;
// LINE 3
// Bottom right
vertices[index] = new ColorShader.Vertex()
{
position = new Vector3(i + 1, 0, j),
color = new Vector4(1, 1, 1, 1)
};
indices[index] = index++;
// Bottom left
vertices[index] = new ColorShader.Vertex()
{
position = new Vector3(i, 0, j),
color = new Vector4(1, 1, 1, 1)
};
indices[index] = index++;
// LINE 4
// Bottom left
vertices[index] = new ColorShader.Vertex()
{
position = new Vector3(i, 0, j),
color = new Vector4(1, 1, 1, 1)
};
indices[index] = index++;
// Upper left
vertices[index] = new ColorShader.Vertex()
{
position = new Vector3(i, 0, j + 1),
color = new Vector4(1, 1, 1, 1)
};
indices[index] = index++;
}
}
// Create the vertex buffer.
VertexBuffer = Buffer.Create(device, BindFlags.VertexBuffer, vertices);
// Create the index buffer.
IndexBuffer = Buffer.Create(device, BindFlags.IndexBuffer, indices);
return true;
}
catch
{
return false;
}
}
protected virtual void FillArrays(out ColorShader.Vertex[] vertices, out int[] indices)
{
// Create the vertex array.
vertices = new ColorShader.Vertex[VertexCount];
// Create the index array.
indices = new int[IndexCount];
var index = 0;
for (var j = 0; j < TerrainHeight - 1; j++)
{
for (var i = 0; i < TerrainWidth - 1; i++)
{
// LINE 1
// Upper left
vertices[index] = new ColorShader.Vertex()
{
position = new Vector3(i, 0, j + 1),
color = new Vector4(1, 1, 1, 1)
};
indices[index] = index++;
// Upper right
vertices[index] = new ColorShader.Vertex()
{
position = new Vector3(i + 1, 0, j + 1),
color = new Vector4(1, 1, 1, 1)
};
indices[index] = index++;
// LINE 2
// Upper right
vertices[index] = new ColorShader.Vertex()
{
position = new Vector3(i + 1, 0, j + 1),
color = new Vector4(1, 1, 1, 1)
};
indices[index] = index++;
// Bottom right
vertices[index] = new ColorShader.Vertex()
{
position = new Vector3(i + 1, 0, j),
color = new Vector4(1, 1, 1, 1)
};
indices[index] = index++;
// LINE 3
// Bottom right
vertices[index] = new ColorShader.Vertex()
{
position = new Vector3(i + 1, 0, j),
color = new Vector4(1, 1, 1, 1)
};
indices[index] = index++;
// Bottom left
vertices[index] = new ColorShader.Vertex()
{
position = new Vector3(i, 0, j),
color = new Vector4(1, 1, 1, 1)
};
indices[index] = index++;
// LINE 4
// Bottom left
vertices[index] = new ColorShader.Vertex()
{
position = new Vector3(i, 0, j),
color = new Vector4(1, 1, 1, 1)
};
indices[index] = index++;
// Upper left
vertices[index] = new ColorShader.Vertex()
{
position = new Vector3(i, 0, j + 1),
color = new Vector4(1, 1, 1, 1)
};
indices[index] = index++;
}
}
}
protected override void FillArrays(out ColorShader.Vertex[] vertices, out int[] indices)
{
// Create the vertex array.
vertices = new ColorShader.Vertex[VertexCount];
// Create the index array.
indices = new int[IndexCount];
var index = 0;
for (var j = 0; j < TerrainHeight - 1; j++)
{
for (var i = 0; i < TerrainWidth - 1; i++)
{
var indexBottomLeft = TerrainHeight * j + i;
var indexBottomRight = TerrainHeight * j + (i + 1);
var indexUpperLeft = TerrainHeight * (j + 1) + i;
var indexUpperRight = TerrainHeight * (j + 1) + (i + 1);
#region First Triangle
// Upper left
vertices[index] = new ColorShader.Vertex()
{
position = HeightMap[indexUpperLeft],
color = Vector4.One
};
indices[index] = index++;
// Upper right
vertices[index] = new ColorShader.Vertex()
{
position = HeightMap[indexUpperRight],
color = Vector4.One
};
indices[index] = index++;
// Upper right
vertices[index] = new ColorShader.Vertex()
{
position = HeightMap[indexUpperRight],
color = Vector4.One
};
indices[index] = index++;
// Bottom Left
vertices[index] = new ColorShader.Vertex()
{
position = HeightMap[indexBottomLeft],
color = Vector4.One
};
indices[index] = index++;
// Bottom Left
vertices[index] = new ColorShader.Vertex()
{
position = HeightMap[indexBottomLeft],
color = Vector4.One
};
indices[index] = index++;
// Upper left
vertices[index] = new ColorShader.Vertex()
{
position = HeightMap[indexUpperLeft],
color = Vector4.One
};
indices[index] = index++;
#endregion
#region Second Triangle
// Bottom Left
vertices[index] = new ColorShader.Vertex()
{
position = HeightMap[indexBottomLeft],
color = Vector4.One
};
indices[index] = index++;
// Upper right
vertices[index] = new ColorShader.Vertex()
{
position = HeightMap[indexUpperRight],
color = Vector4.One
};
indices[index] = index++;
// Upper right
vertices[index] = new ColorShader.Vertex()
{
position = HeightMap[indexUpperRight],
color = Vector4.One
};
indices[index] = index++;
// Bottom right
vertices[index] = new ColorShader.Vertex()
{
position = HeightMap[indexBottomRight],
color = Vector4.One
};
indices[index] = index++;
// Bottom right
vertices[index] = new ColorShader.Vertex()
{
position = HeightMap[indexBottomRight],
color = Vector4.One
};
indices[index] = index++;
// Bottom Left
vertices[index] = new ColorShader.Vertex()
{
position = HeightMap[indexBottomLeft],
color = Vector4.One
};
indices[index] = index++;
#endregion
}
}
}
