/// <summary>
/// Helper function to set the texture coordinates. Instead of taking a movie
/// object, this takes a specific texture name, video size, texture size, and
/// material. Sets a texture matrix to adjust the existing coordinates.
/// </summary>
/// <param name="textureName">
/// The name of the texture to adjust.
/// </param>
/// <param name="videoSize">
/// The size of the video in pixels.
/// </param>
/// <param name="textureSize">
/// The size of the expected texture in pixels.
/// </param>
/// <param name="material">
/// The name of the material to search for textures.
/// </param>
/// <returns>
/// True if any texture coordinates were adjusted, false if not.
/// </returns>
public static bool SetTextureCoordinates(string textureName, Size videoSize, Size textureSize, string material)
{
bool ans = false;
Axiom.Graphics.Material m = MaterialManager.Instance.GetByName(material);
if (m != null)
{
for (int i = 0; i < m.NumTechniques; i++)
{
for (int j = 0; j < m.GetTechnique(i).NumPasses; j++)
{
Pass p = m.GetTechnique(i).GetPass(j);
for (int k = 0; k < p.NumTextureUnitStages; k++)
{
if (p.GetTextureUnitState(k).TextureName == textureName)
{
TextureUnitState tu = p.GetTextureUnitState(k);
float uRatio = ((float)videoSize.Width) / ((float)textureSize.Width);
float vRatio = ((float)videoSize.Height) / ((float)textureSize.Height);
tu.SetTextureScale(1.0f / uRatio, 1.0f / vRatio);
tu.SetTextureScroll(-0.5f * (1.0f - uRatio), -0.5f * (1.0f - vRatio));
ans = true;
}
}
}
}
}
return(ans);
}
public void UpdateTextureTransform(TextureUnitState texUnit, float pageX, float pageZ)
{
//Axiom.Core.LogManager.Instance.Write("Decal: {0}, {1} page:{2}, {3}", posX, posZ, pageX, pageZ);
float pageSize = TerrainManager.Instance.PageSize * TerrainManager.oneMeter;
float scaleX = sizeX / pageSize;
float scaleZ = sizeZ / pageSize;
texUnit.SetTextureScale(scaleX, scaleZ);
float centerX = pageX + pageSize / 2f;
float centerZ = pageZ + pageSize / 2f;
texUnit.SetTextureScroll((centerX - posX) / (pageSize * scaleX), (centerZ - posZ) / (pageSize * scaleZ));
texUnit.SetTextureRotate(rot);
}
