/// <summary>
/// Applies the snowfall generator to the TerrainPage.
/// </summary>
/// <param name="level">The snow level (elevation).</param>
/// <param name="blend">The snow blending distance.</param>
private void CreateSnow(float level, float blend)
{
DataCore.Texture tex = _page.TerrainPatch.GetTexture();
DataCore.Texture newTex = new Voyage.Terraingine.DataCore.Texture();
Bitmap image = new Bitmap(128, 128, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
float xScale = _page.TerrainPatch.Width / image.Width;
float yScale = _page.TerrainPatch.Height / image.Height;
string filename;
Vector2 origin;
Vector3 point;
int v1, v2, v3;
float alpha;
int fileCount = -1;
for (int j = 0; j < image.Height; j++)
{
for (int i = 0; i < image.Width; i++)
{
origin = new Vector2((float)i * xScale, (float)j * yScale);
_page.GetPlane(origin, out v1, out v2, out v3, out point);
if (point.Y >= level)
{
if (point.Y >= level + blend)
{
image.SetPixel(i, j, Color.FromArgb(0, Color.White));
}
else
{
alpha = 255f - (point.Y - level) / blend * 255f;
image.SetPixel(i, j, Color.FromArgb((int)alpha, Color.White));
}
}
else
{
image.SetPixel(i, j, Color.FromArgb(255, Color.White));
}
}
}
do
{
fileCount++;
filename = Path.GetDirectoryName(tex.FileName) + "\\" +
Path.GetFileNameWithoutExtension(tex.FileName) + "_snowfall" + fileCount + ".bmp";
} while (File.Exists(filename));
image.Save(filename, System.Drawing.Imaging.ImageFormat.Bmp);
newTex.FileName = filename;
newTex.Name = "Snowfall";
newTex.Operation = TextureOperation.BlendTextureAlpha;
newTex.OperationText = "Use Texture Alpha";
_page.TerrainPatch.AddTexture(newTex);
_textures = _page.TerrainPatch.Textures;
}
/// <summary>
/// Creates a copy of a Texture object.
/// </summary>
/// <param name="tex">Texture object to copy.</param>
public Texture( Texture tex )
{
if ( tex != null )
{
_texture = tex.DXTexture;
_name = tex._name;
_file = tex._file;
_mask = tex._mask;
_render = tex._render;
_shift = new Vector2( tex._shift.X, tex._shift.Y );
_scale = new Vector2( tex._scale.X, tex._scale.Y );
_operation = tex._operation;
_operationText = tex._operationText;
}
else
{
_texture = null;
Initialize();
}
}
/// <summary>
/// Loads data about a texture from the XML document.
/// </summary>
/// <param name="xmlNode">The XML node to load data from.</param>
private void LoadTexture( XmlNode xmlNode )
{
DataCore.Texture tex = new Texture();
// Load the texture name
xmlNode = xmlNode.FirstChild;
tex.Name = xmlNode.InnerText;
// Load the texture filename
xmlNode = xmlNode.NextSibling;
tex.FileName = xmlNode.InnerText;
// Load the texture operation
xmlNode = xmlNode.NextSibling;
tex.OperationText = xmlNode.InnerText;
// Load if the texture is a mask
xmlNode = xmlNode.NextSibling;
tex.Mask = Convert.ToBoolean( xmlNode.InnerText );
// Load the texture scale value
xmlNode = xmlNode.NextSibling;
tex.Scale = LoadVector2Node( xmlNode );
// Load the texture shift value
xmlNode = xmlNode.NextSibling;
tex.Shift = LoadVector2Node( xmlNode );
_textures.Add( tex );
_page.TerrainPatch.AddBlankTexture();
_modifiedTextures = true;
}
/// <summary>
/// Applies the snowmelt generator to the TerrainPage.
/// </summary>
private void MeltSnow()
{
DataCore.Texture oldTex = _page.TerrainPatch.GetTexture();
DataCore.Texture tex = new Voyage.Terraingine.DataCore.Texture();
Bitmap oldImage = oldTex.GetImage();
Bitmap image = new Bitmap( oldImage.Width, oldImage.Height,
System.Drawing.Imaging.PixelFormat.Format32bppArgb );
float xScale = _page.TerrainPatch.Width / image.Width;
float yScale = _page.TerrainPatch.Height / image.Height;
string filename;
Vector2 origin;
Vector3 point, normal;
Vector3 n1, n2, n3;
int v1, v2, v3;
Vector3 light = (Vector3) _receivedData[0];
float alpha, dot;
Color color;
int fileCount = -1;
float dist1, dist2, dist3;
for ( int j = 0; j < image.Height; j++ )
{
for ( int i = 0; i < image.Width; i++ )
{
// Get original pixel color
color = oldImage.GetPixel( i, j );
// Find point on terrain
origin = new Vector2( (float) i * xScale, (float) j * yScale );
_page.GetPlane( origin, out v1, out v2, out v3, out point );
// Determine weighted distance from each vertex
dist1 = ( (Vector3) _page.TerrainPatch.Vertices[v1].Position - point ).Length();
dist2 = ( (Vector3) _page.TerrainPatch.Vertices[v2].Position - point ).Length();
dist3 = ( (Vector3) _page.TerrainPatch.Vertices[v3].Position - point ).Length();
// Determine weighted normal
n1 = ( dist1 / ( dist1 + dist2 + dist3 ) ) * _page.TerrainPatch.Vertices[v1].Normal;
n2 = ( dist2 / ( dist1 + dist2 + dist3 ) ) * _page.TerrainPatch.Vertices[v2].Normal;
n3 = ( dist3 / ( dist1 + dist2 + dist3 ) ) * _page.TerrainPatch.Vertices[v3].Normal;
normal = n1 + n2 + n3;
normal.Normalize();
// Determine angle of light against pixel position
dot = Vector3.Dot( normal, -light );
// Determine alpha of new pixel
if ( dot >= 0f )
alpha = oldImage.GetPixel( i, j ).A - 255f * dot;
else
alpha = oldImage.GetPixel( i, j ).A;
if ( alpha < 0f )
alpha = 0f;
else if ( alpha > 255f )
alpha = 255f;
color = Color.FromArgb( color.ToArgb() );
image.SetPixel( i, j, color );
}
}
do
{
fileCount++;
filename = Path.GetDirectoryName( oldTex.FileName ) + "\\" +
Path.GetFileNameWithoutExtension( oldTex.FileName ) + "_snowmelt" + fileCount + ".bmp";
} while ( File.Exists( filename ) );
image.Save( filename, System.Drawing.Imaging.ImageFormat.Bmp );
tex.FileName = filename;
tex.Name = "Snowmelt";
tex.Operation = TextureOperation.BlendTextureAlpha;
tex.OperationText = "Use Texture Alpha";
_page.TerrainPatch.AddTexture( tex );
_textures = _page.TerrainPatch.Textures;
}
/// <summary>
/// Applies the snowmelt generator to the TerrainPage.
/// </summary>
private void MeltSnow()
{
DataCore.Texture oldTex = _page.TerrainPatch.GetTexture();
DataCore.Texture tex = new Voyage.Terraingine.DataCore.Texture();
Bitmap oldImage = oldTex.GetImage();
Bitmap image = new Bitmap(oldImage.Width, oldImage.Height,
System.Drawing.Imaging.PixelFormat.Format32bppArgb);
float xScale = _page.TerrainPatch.Width / image.Width;
float yScale = _page.TerrainPatch.Height / image.Height;
string filename;
Vector2 origin;
Vector3 point, normal;
Vector3 n1, n2, n3;
int v1, v2, v3;
Vector3 light = (Vector3)_receivedData[0];
float alpha, dot;
Color color;
int fileCount = -1;
float dist1, dist2, dist3;
for (int j = 0; j < image.Height; j++)
{
for (int i = 0; i < image.Width; i++)
{
// Get original pixel color
color = oldImage.GetPixel(i, j);
// Find point on terrain
origin = new Vector2((float)i * xScale, (float)j * yScale);
_page.GetPlane(origin, out v1, out v2, out v3, out point);
// Determine weighted distance from each vertex
dist1 = ((Vector3)_page.TerrainPatch.Vertices[v1].Position - point).Length();
dist2 = ((Vector3)_page.TerrainPatch.Vertices[v2].Position - point).Length();
dist3 = ((Vector3)_page.TerrainPatch.Vertices[v3].Position - point).Length();
// Determine weighted normal
n1 = (dist1 / (dist1 + dist2 + dist3)) * _page.TerrainPatch.Vertices[v1].Normal;
n2 = (dist2 / (dist1 + dist2 + dist3)) * _page.TerrainPatch.Vertices[v2].Normal;
n3 = (dist3 / (dist1 + dist2 + dist3)) * _page.TerrainPatch.Vertices[v3].Normal;
normal = n1 + n2 + n3;
normal.Normalize();
// Determine angle of light against pixel position
dot = Vector3.Dot(normal, -light);
// Determine alpha of new pixel
if (dot >= 0f)
{
alpha = oldImage.GetPixel(i, j).A - 255f * dot;
}
else
{
alpha = oldImage.GetPixel(i, j).A;
}
if (alpha < 0f)
{
alpha = 0f;
}
else if (alpha > 255f)
{
alpha = 255f;
}
color = Color.FromArgb(color.ToArgb());
image.SetPixel(i, j, color);
}
}
do
{
fileCount++;
filename = Path.GetDirectoryName(oldTex.FileName) + "\\" +
Path.GetFileNameWithoutExtension(oldTex.FileName) + "_snowmelt" + fileCount + ".bmp";
} while (File.Exists(filename));
image.Save(filename, System.Drawing.Imaging.ImageFormat.Bmp);
tex.FileName = filename;
tex.Name = "Snowmelt";
tex.Operation = TextureOperation.BlendTextureAlpha;
tex.OperationText = "Use Texture Alpha";
_page.TerrainPatch.AddTexture(tex);
_textures = _page.TerrainPatch.Textures;
}
/// <summary>
/// Adds a blank texture to the list of textures used by the TerrainPatch.
/// </summary>
public void AddBlankTexture()
{
Texture tex = new Texture();
_textures.Add( tex );
AddTextureCoordinates();
}
