public void Create(int size, int gridSpacing, float minHeight, float maxHeight, HeightMapGenerationMethod method, float bumpiness)
{
Texture2D terrain_bitmap = null;
if (method == HeightMapGenerationMethod.FromBitMap)
{
terrain_bitmap = content.Load<Texture2D>("terrain");
size = terrain_bitmap.Width;
}
heightMap = new HeightMap(size, gridSpacing, minHeight, maxHeight);
// Generate the terrain vertices.
int totalVertices = size * size;
//int totalIndices = (size - 1) * (size * 2 + 1);
int totalIndices = (size - 1) * (size - 1) * 6;
// NOTE: migration to XNA 4.0
// NOTE: vertexDeclaration = new VertexDeclaration(graphicsDevice,
// NOTE: VertexPositionNormalTexture.VertexElements);
// NOTE:
// NOTE: vertices = new VertexPositionNormalTexture[totalVertices];
// NOTE:
// NOTE: vertexBuffer = new DynamicVertexBuffer(graphicsDevice,
// NOTE: VertexPositionNormalTexture.SizeInBytes * vertices.Length,
// NOTE: BufferUsage.WriteOnly);
// NOTE:
vertices = new VertexPositionNormalTexture[totalVertices];
vertexBuffer = new DynamicVertexBuffer(graphicsDevice, typeof(VertexPositionNormalTexture), vertices.Length, BufferUsage.WriteOnly);
//vertexBuffer.ContentLost += new EventHandler(vertexBuffer_ContentLost);
//vertexBuffer.SetData(particles);
//vertexBuffer = new VertexBuffer(graphicsDevice, typeof(VertexBuffer), vertices.Length, BufferUsage.WriteOnly);
switch (method)
{
case HeightMapGenerationMethod.DiamondSquareFractal:
GenerateUsingDiamondSquareFractal(1.2f);
break;
case HeightMapGenerationMethod.FromBitMap:
GenerateFromBitmap(terrain_bitmap, bumpiness);
break;
default:
GenerateUsingDiamondSquareFractal(1.2f);
break;
}
// Generete the terrain triangle indices.
if (Using16BitIndices())
{
indices16Bit = new ushort[totalIndices];
GenerateIndices();
indexBuffer = new IndexBuffer(graphicsDevice,
typeof(ushort),
indices16Bit.Length,
BufferUsage.WriteOnly);
indexBuffer.SetData(indices16Bit);
}
else
{
indices32Bit = new uint[totalIndices];
GenerateIndices();
indexBuffer = new IndexBuffer(graphicsDevice,
typeof(uint),
indices32Bit.Length,
BufferUsage.WriteOnly);
indexBuffer.SetData(indices32Bit);
}
// Calculate the bounding box and bounding sphere for the terrain.
Vector3 min = new Vector3(), max = new Vector3();
min.X = 0.0f;
min.Y = heightMap.MinHeight;
min.Z = 0.0f;
max.X = heightMap.Size * heightMap.GridSpacing;
max.Y = heightMap.MaxHeight;
max.Z = heightMap.Size * heightMap.GridSpacing;
boundingBox = new BoundingBox(min, max);
boundingSphere = BoundingSphere.CreateFromBoundingBox(boundingBox);
// Load the effect file used to render the terrain.
try
{
effect = content.Load<Effect>(@"Shaders\TerrainShader");
}
catch (ContentLoadException)
{
try
{
effect = content.Load<Effect>("TerrainShader");
}
catch (ContentLoadException)
{
}
}
}
public void Create(int size, int gridSpacing, float minHeight, float maxHeight, HeightMapGenerationMethod method, float bumpiness)
{
Texture2D terrain_bitmap = null;
if (method == HeightMapGenerationMethod.FromBitMap)
{
terrain_bitmap = content.Load <Texture2D>("terrain");
size = terrain_bitmap.Width;
}
heightMap = new HeightMap(size, gridSpacing, minHeight, maxHeight);
// Generate the terrain vertices.
int totalVertices = size * size;
//int totalIndices = (size - 1) * (size * 2 + 1);
int totalIndices = (size - 1) * (size - 1) * 6;
// NOTE: migration to XNA 4.0
// NOTE: vertexDeclaration = new VertexDeclaration(graphicsDevice,
// NOTE: VertexPositionNormalTexture.VertexElements);
// NOTE:
// NOTE: vertices = new VertexPositionNormalTexture[totalVertices];
// NOTE:
// NOTE: vertexBuffer = new DynamicVertexBuffer(graphicsDevice,
// NOTE: VertexPositionNormalTexture.SizeInBytes * vertices.Length,
// NOTE: BufferUsage.WriteOnly);
// NOTE:
vertices = new VertexPositionNormalTexture[totalVertices];
vertexBuffer = new DynamicVertexBuffer(graphicsDevice, typeof(VertexPositionNormalTexture), vertices.Length, BufferUsage.WriteOnly);
//vertexBuffer.ContentLost += new EventHandler(vertexBuffer_ContentLost);
//vertexBuffer.SetData(particles);
//vertexBuffer = new VertexBuffer(graphicsDevice, typeof(VertexBuffer), vertices.Length, BufferUsage.WriteOnly);
switch (method)
{
case HeightMapGenerationMethod.DiamondSquareFractal:
GenerateUsingDiamondSquareFractal(1.2f);
break;
case HeightMapGenerationMethod.FromBitMap:
GenerateFromBitmap(terrain_bitmap, bumpiness);
break;
default:
GenerateUsingDiamondSquareFractal(1.2f);
break;
}
// Generete the terrain triangle indices.
if (Using16BitIndices())
{
indices16Bit = new ushort[totalIndices];
GenerateIndices();
indexBuffer = new IndexBuffer(graphicsDevice,
typeof(ushort),
indices16Bit.Length,
BufferUsage.WriteOnly);
indexBuffer.SetData(indices16Bit);
}
else
{
indices32Bit = new uint[totalIndices];
GenerateIndices();
indexBuffer = new IndexBuffer(graphicsDevice,
typeof(uint),
indices32Bit.Length,
BufferUsage.WriteOnly);
indexBuffer.SetData(indices32Bit);
}
// Calculate the bounding box and bounding sphere for the terrain.
Vector3 min = new Vector3(), max = new Vector3();
min.X = 0.0f;
min.Y = heightMap.MinHeight;
min.Z = 0.0f;
max.X = heightMap.Size * heightMap.GridSpacing;
max.Y = heightMap.MaxHeight;
max.Z = heightMap.Size * heightMap.GridSpacing;
boundingBox = new BoundingBox(min, max);
boundingSphere = BoundingSphere.CreateFromBoundingBox(boundingBox);
// Load the effect file used to render the terrain.
try
{
effect = content.Load <Effect>(@"Shaders\TerrainShader");
}
catch (ContentLoadException)
{
try
{
effect = content.Load <Effect>("TerrainShader");
}
catch (ContentLoadException)
{
}
}
}
